The article has highlighted different alloys and coatings used in medical implants. Medical implants are increasingly being used due to good mechanical strength, wear and corrosion resistant properties, super elasticity and most importantly biocompatibility. For metallographic analysis of these components, several preparation procedures have been highlighted for stainless steel, titanium and its alloys and cobalt alloys. The article also looked at hydroxyapatite (HA) coatings on titanium substrates and presented a general procedure for ceramic coatings on austenitic stainless steels, AISI316LVM. The article has also highlighted cobalt based alloy preparation that is increasingly being used on load bearing medical components.
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