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Evaluation of Tribological Corrosion Co-Cr Alloy's Medical Implant - Essay Example

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Evaluation of Tribological and Corrosion Co-Cr Alloy’s Medical Implant (Name) (University) (Course) (Tutor) (Date) Abstract There exists use of Co-Cr alloy in medical implants due to its high biocompatibility levels, excellent mechanical and corrosion resistant properties…
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Evaluation of Tribological Corrosion Co-Cr Alloy's Medical Implant

Download file to see previous pages... Introduction The problem being dealt with in the study is examination of the application of Cobalt-Chromium alloy and how suitable it is as a metal alloy in the production of orthopaedic implants like hip and knee replacements. It is important because the use of metal has been exclusively done when it comes to the manufacture of these implants. Many researches were carried out on suitability of alloys in implants but the need to control wear and corrosion resistance and thus extend the life of these implants did not receive the needed attention, yet it is extremely vital in the orthopaedic implants. Other materials have been tested in the years with the view of establishing their effectiveness in the replacement for bones. Metallic alloys are extensively used and this is attributed to their availability and success in implants. The alloys are derived from metals such as iron, cobalt, chromium, titanium, and tantalum. Clinical tests have proven the viability of using these metals in the manufacture of orthopaedic implants which are left in vivo for quite a long time. Being a metal alloy made out of cobalt and chromium, Cobalt-Chrome is commonly used in orthopaedic implants and has the ability to withstand different porous forms, which allow for biologic fixations in growth. Their characteristics make them critical in making artificial body parts for replacing bone and act as load bearing. This research is different from the others in that few studies have targeted tribocorrosion systems and this is why many areas, for instance the effects of proteins on these processes have not been well established. Objectives Much information has been presented for the literature review carried out and this was aimed at gathering important information on the background of these concepts and existing knowledge of the research area identified. It is also essential that the tribocorrosion effects and subsequent behaviour exhibited by CoCr alloys is found out; analysis and comparison of the impact that heat treatment has on CoCr alloys is studied; doing data analysis of the test results that have emanated from the experiments on tribocorrosion of CoCr alloys is to be done; and finally, these results are to be presented and evaluated based on the actual field findings rather than personal intuition. Literature Review Review of studies carried out on CoCr alloys has been done. Co-Cr alloy which is the Cobalt Chrome alloy is made from a combination of the chemical elements Cobalt and Chromium in major quantities and with traces of Molybdenum and other elements to ease the working process in the manufacturing of this alloys and come in form of CoCrMo and CoCrW alloys. Cobalt is atomic number 27 on the periodic table and does exists freely as a hard, silver grey shiny metal. Cobalt has industrial uses such as production of high strength, wear resistant and magnetic alloys and is used in so many other areas such as radio-isotope in tracer and formation of gamma rays for radio-activity and production of Vitamin B-12. Chromium is 24th on periodic table and is the first of halo elements. Has a high polish due to its steely-grey, shiny, strong metallic properties, has no smell and is found in various shapes. It has higher corrosion resistance and hardness properties. It is essential in human body and its elimination causes chromium deficiency and other disorders, however; direct intake in high quantities is dangerous and cancerous. We have established ...Download file to see next pagesRead More
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