USING HYDROXYAPATITE POWDER (HAP) IN COATING OF STAINLESS-STEEL SUBSTRATE FOR BIO-APPLIATION (A REVIEW)
Around the world about millions of people using the medical devices or biomaterials
that implanted in side human body in order to replace the function of unwell tissues or
damaged parts. In spite of the importance roles of these implants in saving or improving
human life, many of them are failed during short period or having complications. The main
failure of the biomaterials caused by unqualified biocompatibility. Thus there are two
materials types used for this field investment such as thin film nitinol and stainless steel.
Stainless-Steel type 316L are widely used in biomaterial bone applications specially fixing
devices such as plates, screws, pins and artificial joints. On the other hands, thin film nitinol
indicates a high possibility for applying in a small new vascular devices like heart valves
and covering stent grafts because of the singular beneficial properties of this material like
super-elasticity and low-profile feature.