Biomaterial Research Laboratory
Head of the Lab Dr. S Lugovskoy
1. Biocompatible coating for titanium alloys
Titanium and its alloys have been widely used for implants because of their good chemical stability, appropriate corrosion resistance and acceptable biocompatibility. It is difficult to achieve chemical bonding with the bone and to form a new bone on its surface at an early stage after the implantation. To overcome this drawback, various physical and chemical treatments of the Ti surface have been proposed aimed at the obtaining of the best biocompatible implant surface. The most common technique is that of the production of hydroxyapatite (HA). HA is a naturally occurring mineral form of calcium apatites and the main mineral component of bones and teeth. The biocompatibility of HA has been thoroughly investigated, it has been established and proved, that when HA is applied on titania, it is spontaneously bound with the living bone.
2. Electrochemical ceramic coatings
One of the actual tasks in the modern electroplating is the production of Composite Electrochemical Coatongs (CEC). The principle of production of such coatings is based on the electrophoretical co-deposition of dispersed phases of various materials (e.g. nanometric and submicron ceramic particles) in the flow of electrodeposited metal ions. Thus incorporated ceramic particles can essentially improve the hardness, abrasion and corrosion resistance of the coating and even result in new magnetic or catalytic properties of the latter.
The development of electrolytic methods (e.g. CECD, Conventional Electrocodeposition and SCD, Sediment Codeposition ) for the incorporation of inert particles into a metal matrix has gained especial importance over the past years, since uniform particle distribution and satisfying deposition rates can be obtained at relatively low-costs equipment.