TITLE:
Hybrid Method for the Formation of Biocomposites on the Surface of Stainless Steel Implants
AUTHORS:
Sergei I. Tverdokhlebov, Viktor P. Ignatov, Igor B. Stepanov, Denis O. Sivin, Danila G. Petlin
KEYWORDS:
Biocomposite; Stainless Steel; Titanium; Vacuum-Arc Deposition of Coatings; Short-Pulse High-Frequency Plasma-Immersion Ion Implantation; Microarc Oxidation; Implant
JOURNAL NAME:
Engineering,
Vol.4 No.10,
October
11,
2012
ABSTRACT: This study reports a hybrid method which allows the formation of biocomposites on stainless steel implants. The main idea of the method is to create multilayer coatings consisting of titanium primer layer and a microarc calcium-phosphate coating. The titanium layer is deposited from plasma of continuous vacuum-arc discharge, and calcium-phosphate coating is formed by the microarc oxidation technique. The purpose of the hybrid method is to combine the properties of good strength stainless steel with high bioactivity of calcium-phosphate coating. This paper describes the chemical composition, morphology characteristics, adhesion and the ability of the formed biocomposites to stimulate the processes of osteoinduction. It is expedient to use such biocomposites for implants which carry heavy loads and are intended for long-term use, e.g. total knee endoprosthesis.