Factors Affecting the Oxidation of Iron Alloys

Factors Affecting the Oxidation of Iron Alloys Abstract This paper is about the prevention of the formation of Iron Oxide. For the purpose of this investigation three coatings have been electroplated to the steel electrodes. The electrodes were then placed next to a salt solution approximately the same as that of ocean water .The mass changes in the metal were then measured and placed into a data table. From this data table I made a column graph to clearly show how the effects of each of the coatings had on the rate of oxidation of the steel electrodes. The mass change of the electrodes was shown through the measuring of these electrodes both before and after the two week space of time in which they were allowed to rust. The results that were obtained from the investigation have proved to be conclusive with the hypothesis that was suggested. This shows that the best way of protecting metal from corrosion was through the usage of copper as a complete coating of the electrode. This action also showed that current methods of galvanization protected some areas but as soon as there was any disturbance in the surface of the metal the corrosion of the iron took hold and rust was formed where the zinc oxide layer receded from. The overall way that the three coatings worked was that copper was the best followed by zing and finally the nickel coating proved to be worst actually accelerating the decomposition of the steel electrode. Introduction The destruction of steel around the ocean’s salty air has been a consistent battle by both fishermen and mariners throughout history. Growing up around the ocean has left me with little doubt about the destructive power of the oceans salty air. The formation of Iron III Oxide and Iron II Oxide more commonly known as rust has always been a problem affecting the local ocean side businesses. The problem of rusting has been around for thousands of years from when man first began to create things made of steel. The first early processes to prevent rusting were to simply cover the metal in animal fat or oil this hydrophobic covering was the main way in which materials were treated to prevent the buildup of iron oxide. The invention of electroplating of metals changed how metals were treated thereafter. Having and interest in maritime transport and seeing how the massive hulls of ships were constructed from steel. Steel has tendency to rust as well as to become highly susceptible to the effects of salt water. Salt water is an aqueous sodium chloride solution acts as an electrolyte solution which allows for rusting to occur at a more significant rate. The prevention of rusting of the hulls of ships is to attach zinc blocks to the hulls of ships. I became aware of this method because one day as I was diving I saw a round block that was attached to the engine of our skiff. When I asked what it was my father told me it was a zinc block. The zinc block reacts with the salt water to create a basic solution which prevents the formation of the iron oxide on the hulls of these tankers. Another method that is commonly used by mariners to combat the ever-present effects of the oxidation on the building materials is a process known as galvanization. Galvanization is the process by which a thin layer of zinc is electrically fused onto the surface of the steel. This fusing of zinc to the surface of the steel is known as electroplating. The electro plating of various metals t o the surface of steel has been used as both a way to decorate the steel and as a ways of protecting the surfaces from either corrosion or the buildup of an oxide layer. The usage of copper as a coating was originally used when huge sheets of hammered copper were affixed to the hulls of ships to prevent drill worms from entering the wood as well as to prevent the buildup of bio fouling organic material such as moss or barnacles because copper oxide is mildly poisonous. I wanted to investigate whether metals that experienced similar resistance to oxidation also proved to be beneficial in the coating of steel to prevent the buildup the damaging iron oxides. I have also seen that nickel copper and zinc have each been used in the coating of metals for both the purposes of chemical prevention of degradation of coated metal to decorative uses. Back ground information The composition of sea water (sodium chloride solution) Ocean water is usually around 35 parts per thousand of salt vs water this means that the sodium chloride content in salt water is around 3.5% of the total volume. Therefore in 1 kg of salt water there is 35grams of salt. (Seawater 01 Apr 2014) The composition of steel Steel is an iron alloy which consists of: Plain Steel Carbon 1.35% Is used to strengthen the iron in the composition of steel Manganese 1.65% Is to react with the sulphur in the composition of steel and this reaction increases the heat resistance of the steel. Phosphorous .04% Used to reduce the corrosion present on the surface of the steel Sulfur .05% May cause steel to become too porous and prone to cracking if the manganese mixture is not correct. Silicon .06% Acts as a deoxidizer in the steel making process (â€Å"Steel† January 06 2014) Rusting chemical equations: [The rusting of iron is an electrochemical process that begins with the transfer of electrons from iron to oxygen. The iron is the reducing agent (gives up electrons) while the oxygen is the oxidizing agent (gains electrons). The rate of corrosion is affected by water and accelerated by electrolytes, as illustrated by the effects of road salt on the corrosion of automobiles. The key reaction is the reduction of oxygen: O2 + 4à ¢Ã¢â€š ¬Ã…  e− + 2à ¢Ã¢â€š ¬Ã…  H2O → 4à ¢Ã¢â€š ¬Ã…  OH− Because it forms hydroxide ions, this process is strongly affected by the presence of acid. Indeed, the corrosion of most metals by oxygen is accelerated at low pH. Providing the electrons for the above reaction is the oxidation of iron that may be described as follows: Fe → Fe2+ + 2à ¢Ã¢â€š ¬Ã…  e− The following redox reaction also occurs in the presence of water and is crucial to the formation of rust: 4à ¢Ã¢â€š ¬Ã…  Fe2+ + O2 → 4à ¢Ã¢â€š ¬Ã…  Fe3+ + 2à ¢Ã¢â€š ¬Ã…  O2−]†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦(1) (Dufour , 01 Mar. 2014) The reasoning behind why the coatings work A galvanic anode is the main component of a galvanic cathode protection system. This protection system is usually referred to a (CP) system. The usage of a more reactive metal to be sacrificed instead of the metallic structure is known as sacrificial. The sacrificial anode is usually made from a metal that has a higher electric potential than that of the object being protected. This electrical potential causes the sacrificial anode to be corroded instead of the other ferrous material. Electro plating definition/ Apparatus [Electroplating is a process that uses electrical current to reduce dissolved metal cations so that they form a coherent metal coating on an electrode. The term is also used for electrical oxidation of anions onto a solid substrate, as in the formation silver chloride on silver wire to make silver/silver-chloride electrodes. Electroplating is primarily used to change the surface properties of an object (e.g. abrasion and wear resistance, corrosion protection, lubricity, aesthetic qualities, etc.), but may also be used to build up thickness on undersized parts or to form objects by electroforming.]†¦Ã¢â‚¬ ¦ (2) (Dufour 01 2014) This apparatus is used in the majority of tanks which is used to be able to coat metals with the ions in the solution. This is done when an electrical charge is applied to the apparatus and causes a flow in the ions of solution. This flow of elections causes the ions dissolved in the solution to coat the surface of the target metal. The usage of the same metal as is dissolved in solution insures that the overall concentration of ions in solution never diminishes and ensures that there is a continuous flow of the ions in the electrolyte solution. The oxidation processes of copper, nickel, And zinc Copper 2 CuSO4+ 2 Na2CO3+ H2O → Cu2(OH)2CO3+ 2 Na2SO4+ CO2 Nickel 2Ni(s) + Oà ¢Ã¢â‚¬Å¡Ã¢â‚¬Å¡(g) → 2NiO(s) Zinc 2Zn(s) + O2(g) → 2ZnO(s) Both nickel and zinc do not react with water however the constant dissociation of the ions in salt water create a thin layer around the metals which is resistant to corrosion. Copper does the same thing as these other two metals however it does react with air and water to from a (patina) this patina is copper oxide layer. This copper oxide layer turns green and a highly resistant coating that is in susceptible further chemical oxidation. Research question How do different metal coatings affect the rate of Iron oxides forming on the surface of iron and iron alloys? The research question is to determine how through the plating of several different metals onto a steel strip the rate at which these steel strips become oxidized to become Iron oxide. To investigate the rate I am going to take these strips of steel, ensure that they are free of any oxidation, and coat them with exactly the same mass of each of the metals (Copper, Nickel, and Zinc). After measuring the mass of each of these cleaned pieces of metal I am then going to set up an electrolytic cell and plate three steel strips with copper. Then three with nickel ,then three with zinc and finally have three test strips to investigate how much of a difference ,if any, the coatings help the Steel to resist the formation of iron oxide Hypothesis I Believe that the copper coating will be the most proficient in saving the steel beneath it from any and all corrosion, The zinc would be second best in the prevention in the buildup of the rust as it would act as a sacrificial anode, finally when the nickel plated metal is to be weighed I believe that it will have seen the greatest increase in mass out of the differently coated metal strips. The copper coating would experience the least amount of corrosion. This is because the copper would form a small amount of oxide around the entire steel strip. This protective layer is the main reason that the steel strip would not be affected as much as the other metals. However if there is a piece of the protective coating that may become scratched there would be a significant increase in the rate of rusting by the steel strip. This significant increase in the overall rate of rusting is due to the fact that the iron alloy namely steel would act as a sacrificial anode and this particular trait would cause the formation of iron oxide to increase. The zinc coating would experience a very different accumulation of the oxidation. This is because the zinc will act as a Cathode protection system of the overall strip of steel. This protection system would cause an initial gain in mass however the sacrificial nature of the zinc, once all of the zinc has reacted, the iron would begin to rust. The nickel would be the least effective because it is even less reactive than the copper. This means that the effectiveness of the nickel would further increase the effectiveness of the steel as becoming a sacrificial anode this sacrificial anode would mean that rather than the iron being protected by the nickel the nickel would be protected by the corrosion of the steel strip. Variables Controlled The temperature of the solutions being electrolyised This may have increased the rate at which the electrodes were coated with the copper, nickel and zinc The salt content of the water the samples were placed next to This may have changed and there would have been an increase in the production of rust on the steel electrodes The balance that the masses were measured on Different balances may have changed the readings of the masses of the electrodes The molarity/ concentration of the solutions used to electroplate the steel electrodes A difference in the concentration of the solutions used may have caused excess etching of the steel and may have caused certain electrodes to become more or less oxidized. The mass of the electrodes that were electrolyised The mass of the electrodes was attempted to be kept the same however they were slightly different but each one was recorded. Independent The amount of time for which the electrodes were left to rust. Dependent The mass of rusting / oxidation present after two weeks Apparatus Methodology-Experimentation Placement of the steel cathode and the metal solutions source metal as an anode. Make sure both the steel strip and the copper anode as free of any corrosion/ oxidation before the submersion of the electrodes Make a 1 molar solution of copper sulphate /zinc chloride/Nickel chloride Fill a 100 cm ³ beaker with the .5 molar solution of the metal salt solution. Place a 2 volt charge onto the system Electrolyize till there is a thorough coating around the entire steel strip The coating will add around .5 grams of weight to the steel strip. Then take the electrode and gently place it on a piece of paper towel. Wait until the coated steel strip has dried thoroughly If necessary use steel wool to clean away any scum/ produce a shiny surface on the electro plated surfaces. Place the metal strips where they are exposed to both moisture and sodium chloride solution approximately the same as sea water.(22ppt) Measure the mass change of the metal after 2 weeks make any other observations such as color change. Raw data Copper Zinc Nickel Steel untreated (Control) Analyised Data-Graph Analysis of the graph This graph shows that the copper was the best at preventing the overall gain in the mass of the steel electrode. This prevention in the gaining of mass was mainly due to the fact that the copper made a complete coating around the entire steel electrode. This coating proved to create a thin film of copper oxide shown to be present on the surface of the electrode because of a slight green color that was beginning to form around the corners of the electrode. The zinc proved to be worse than even the control this was due to the fact that the zinc oxide formed also had mass and then the steel also started to become oxidized by the time the two weeks had passed. Although the areas of the electrode which were covered in the zinc oxide there was no iron oxide. The surface of the electrode was spotted with dark brownish red patches this means that there were small rust patches along with the zinc oxide which accounts for the slightly higher mass than that of the control. The reasoning behind why the nickel plated steel electrode had a high mass increase is because of the tendency of the sacrificial anode to be the most reactive metal. The nickel was a lot less reactive than the steel electrode. The fact that the steel electrode was higher along the reactivity series than that of the nickel used caused the steel to become â€Å"sacrificed† in the place of the nickel. This reason is why the steel was most affected in the coating containing the nickel. Conclusion After my testing the hypothesis was proven to be correct. This proving of the hypothesis allowed for me to be able to ascertain that the best way in which to treat steel was with a complete copper covering and secondly with a zinc coating . These two ways in which the metals may be treated are feasible in the fact that zinc bars are usually attached to underwater structures this prevention is known as CP system. This CP prevention is highly affective however it requires a lot of up keep and it does not completely protect the entire surface of the steel as was seen by my testing results. The only one of the results that seemed to have completely worked was the copper coating. The coating of the steel by copper created a hydrophobic coating of copper oxide. The copper oxide had a slight increase in the mass measured by the balance. This slight increase in the mass was due to the fact that the salty air was not able to reach the steel electrode. This prevention ultimately allowed for th e electrode to become protected from the oxidation. The overall way in which the metals were protected is going to allow for me to take my findings and apply them to the everyday usage in which I have begun to realize that we use both electrolysis and oxidation prevention on a daily basis. Possible improvements The amounts of retests as well as the length of testing may be increased this increase in length of testing can allow to see the amount of time taken for the complete disintegration of the metal. The increase of testing of the metals will allow for the in accurate nature for these results as well as the nature by which the metals have been protected from the corrosion. The accuracy of the testing may have been increased through the usage of metal which may have been free of corrosion unlike the metal which I have used. The metal that I used for my expirement had already been heavily corroded and I had to clean it with strong acid as well as to use some sand paper to clean the surface of the metal. After the cleaning of the metal I was only able to remove some of the corrosion. This major limitation of my expirement was that I wasn’t able to clean the corrosion which might have caused the copper coating not to adhere to the surface of the electrode. Finally the most major limit ation of my expirement was the time I had in which to complete the experiments. Firstly I had to wait for the materials to arrive for which to be able begin my expirement, my chemicals as well to get the metal strips cut from a long sheet. Bibliography Jim, Dufour. Electroplating.Wikipedia. Wikimedia Foundation, 01 Mar. 2014. Web. 06 Jan. 2014. http://en.wikipedia.org/wiki/Electroplating>. Rust.Wikipedia. Wikimedia Foundation, 01 Aug. 2014. Web. 09 Jan. 2014. http://en.wikipedia.org/wiki/Rust>. Seawater.Wikipedia. Wikimedia Foundation, 01 Apr. 2014. Web. 06 Jan. 2014. http://en.wikipedia.org/wiki/Seawater American Experience: TVs Most-watched History Series.PBS. PBS, n.d. Web. 06 Jan. 2014. http://www.pbs.org/wgbh/americanexperience/features/general-article/streamliners-steel/>.

Hsm Appendix

Instead of confronting the husband trying to talk rationally with him and defuse the situation while alarming the authorities is the best route for dealing with a person like that. In the case of the wife the programs offered through the agency promote self-worth and help prevent her from feeling bad about herself. Learning new Job skills and healthy ways of thinking about oneself should prepare her for an Independent lifestyle to provide for her and her children. Scenario 2: Closure of a Planned Parenthood Clinic In Scenario two the prevention level being used is the Secondary level of prevention.Secondary prevention can be defined as the early detection and treatment of dysfunction. In this scenario I see the human services program attempting to prevent teenage pregnancy and the rate in their community from steady climbing up by offering services to help teens prevent unplanned pregnancies. I would handle this situation a little differently than how it is handled in this scenario. I would I would still organize a group of other health and human service providers to help In assisting the county to solve the issues, but In Dalton to that I would bring wariness to the community and local politician through getting the media involved.I would also look into doing different fundraising drives to help build money as well as charity drives to keep the clinic open. I would make sure I explain to the public and politicians how unique our program is from others and why it's essential that we stay open. Scenario 3: Caring for the Homeless In scenario three the prevention level being used is the tertiary prevention. This type of prevention is generally defined in terms of efforts to rehabilitate and return to the community those afflicted with severe mental disorders.In this scenario I wouldn't change anything I think that bringing health services In the clinics is the best solution to ensure that the homeless are getting the attention and care they need since they genera lly wouldn't go on their own. Having the health resources there onsite makes it physicians and staff to work towards rehabilitating them and ensuring they are healthy. Bringing the services into the clinics will ensure that their needs are being met properly and it will also help to clean up the community of those who are mentally ill by making sure they are well taken care of.

Family Assessment Essay

Gordon’s functional health patterns is a method developed by Marjory Gordon, a nursing theorist and professor. The functional health patterns are to be used during the nursing process to obtain a more comprehensive assessment. There are 11 functional health patterns to in place to create a comprehensive assessment. The functional health patterns are values and health perception and management, sleep/rest, nutrition, activity/exercise, elimination, cognitive-perceptual, role relationship, self perception, coping-stress tolerance, sexuality and religion. In this paper, I will discuss all of these functional health patterns as they pertain to my husbands perception of our family. Functional Health Patterns I interviewed my husband using Gordon’s functional health pattern guided questions. Miguel is a 41 year old father of four children, Trysten who is 6, Tyernen is 5, Lola is 3 and Eva who is 14 months old. Miguel has been married to Susan for 13 years. He has been running a household for the past 5 years at, taking on the newest role for men as a stay at home parent. The Health Perception–Health Management pattern involves health practices used to reach current level of health or wellness and the individuals actual health status. Questions should focus on the individuals perceived health status and meaning of health. During the assessment of this pattern, a nurse may unearth other patterns that may need to be explored. (Edelman) Rarely sick, Miguel goes to the doctor when necessary and is on Zoloft for anxiety. The kids have been to the doctor this year for their well check ups. Trysten is battling allergies, and just got over a sinus infection. Eva had an ear infection and is now teething. Tyernen had his tonsils out last year. Lola is relatively healthy and Susan just discovered she has been starting to get migraines and is trying different home remedies for these. Nutritional-metabolic patterns focus on the nutrient intake relative to metabolic need. This includes evidence of nutritional balance (physical examination) and reports and description of food and fluid consumption (history). (Edelman) Many meals are eaten out, fast food and restaurants are frequented. When foods are cooked at home, stews, steak, chicken cutlets, pastas, bread, and salads are usually made. Snacks include fruits and banana shakes he makes for the kids. He is overweight and states he knows so. The kids are healthier, and the parents make better choices for them then they do for themselves. Susan is, too, overweight. A very important factor when assessing the sleep-rest pattern is the perception of getting an adequate amount of relaxation and sleep. If the individual reports energy levels waning or fatigue this may provide some indication of the individual’s satisfaction. People have their own ideas about the roles that rest and sleep play in preparing the individual for desired or required daily activities. This pattern becomes extremely important when sleep and rest are reported as insufficient because it effects other aspects in the assessment. (Edelman) Miguel states that he has trouble sleeping and is often tired the next day. He states â€Å"the doctor ordered a sleep study for my sleep apnea I’m sure I have, but I never go. † Children sleep well through the night, approximately 10 hours. Susan just switch from working night shift to day shift, and is flipping her schedule around. Elimination patterns include bladder, skin and bowel function. Nurses ask the patient about regularity, quality, and quantity of stool and urine through reports from the individual any changes or perceived problems and about methods used to get regularity or control. Perspiration quantity and quality determine excretory skin function. (Edelman) In regards to his bathroom habits, he states he goes regularly. Miguels skin is clear, some dryness on elbows and knees noted. Hair and nails look healthy and clean. Children have normal patterns and skin is clear no dryness. Susan has drier skin, states bathroom needs are normal. The activity-exercise focuses on activity level, regular exercise program, and leisure time activities. Physical and subjective assessments include movement capability, activity tolerance, use of assistive devices, self-care ability, satisfaction with activity and exercise patterns, and any perceived problems. (Edelman) With the 4 children, he does get out and play with the kids, but there is no regular exercise routine. The children play everyday outside, wether in the park or in the yard. Susan doesn’t have a regular exercise program either. Cognitive patterns are the ability of the individual to understand and follow directions, make decisions, solve problems, retain information and use language appropriately. Auditory, olfactory, visual, gustatory, tactile, and kinesthetic sensations and perceptions impact the perceptual and sensory patterns. (Edelman) Cognitively, Miguel reads the news online and utilizes the internet to write to his family in Argentina. English is his second language, and he does need assistance expressing himself every once in a while. He does wear glasses, but they are more for driving needs. Children are developmentally on target for their respective ages. Susan is working full time, taking on line courses and running a home with the help of her husband. The sense of each individual’s personal identity, emotional patterns, goals, and feelings about the self is the self perception pattern. Self-image and sense of worth come from the individual’s perception of personal appearance, limitations, and competencies, including the individual’s self-perception and others’ perceptions. (Edelman) Miguel wants to go back to school, but his family is first. At this time, he is at home, allowing his wife to continue her education to better their situation. He feels trapped at times, wants to go back to work. He wants to go to the gym, but his children are more important at this time. He reads to better his knowledge base and fixes the cars, thriving on a bargain when it is found. Again, children seem to be on with their developemental milestones. Susan is having trouble with her physical appearance. Though she projects a confident persona, she is uncomfortable with how she looks at this time. Roles-relationships pattern describes the identity the individual assumes with in a social group and how they interact with others with in that social group and how they are connected. The individual’s perception is a large component of the assessment, as is the individual’s subjective level of satisfaction with the roles and relationships they are in. (Edelman) Miguel states â€Å"I am a daddy, husband, and a friend. † He describes himself in his roles, â€Å"daddy† being the most important to him. The childrens role are still being determined due to the fact they are so young. Trysten is big brother to all and best friend to daddy. Tyernen is a big brother and in competition with Trysten all the time, though it seems to make them want to be better. Tyernen favors his mother, but jokes around often with daddy. Lola seems to have taken on the role of trouble maker, and Eva is following her footsteps. Susan has taken on the role of mother, breadwinner, student, and nurse (not in any specific order). She tends to lead the family, get everyone moving. The sexuality-reproductive pattern is defined by the individual’s sexual functioning, sexual self-concept, methods of intimacy, and reproductive areas. The importance of sexuality to the individual’s life and health is related to the relationship and self-perception patterns. Body image, gender identity and role are linked to sexual identity. Sexual functioning involves, but is not limited to, sexual relations with a partner. (Edelman) Miguel and Susan have not been physically intimate in a long while. Either one of them remember the last time. This is mostly due to Susan’s self-perception/body image and the busy lives that are being lead. Miguel has expressed more than once that the physical aspect of their shared sexuality is unsatisfying. The ability to manage stress in life is a learned behavior. Stress is an inevitable part of life; without it there is no motivation to grow. Most stress comes from minor irritations that build over time, not great tragedies. Edelman) There are many stressors affecting this family. Four young childrens’ demands, being in Arizona when we would prefer to be in New York, working full time, going back to school, staying home with the kids, many many stressors are impacting the lives of the two parents. For the most part, the stress is handled well, though we both seem to be r eaching for food too often and may need to re evaluate our coping mechanisms so it doesn’t impact the childrens learned coping mechanisms. The values-beliefs pattern is defined as the individual’s goals, spiritual values and beliefs. Each of the 11 health patterns addresses the value systems of individuals, family, and society. Individual values or beliefs develop over time and guides the individuals life through societal influences and personal experiences with family. (Edelman) There is no firm religious influence in the home. The family is valued, belief in building a strong base for the children to grow. After compiling the data from the assessment of the family discussed in the paragraphs above, some nursing diagnosis that would be appropriate would be: Altered Nutrition more than body requirements related to using food as a coping mechanism. Sexual dysfunction related to change in body or self-image. Ineffective coping related to inadequate coping method. In conclusion, the functional health patterns gave me a better idea of what is happening in my family and how it is effecting my husband and our relationship. There is always an aspect of the health patterns that can be improved upon within a family, it is the nurses job when assessing to be thorough and helpful.

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