Corrosion degradation and prevention by surface modification of biometallic materials

Singh, Raghuvir and Dahotre, N B (2007) Corrosion degradation and prevention by surface modification of biometallic materials. Journal of Materials Science-Materials in Medicine, 18 (5). pp. 725-751.

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Metals, in addition to ceramics and polymers, are important class of materials considered for replacement of non-functional parts in the body. Stainless steel 316, titanium and titanium alloys, Co-Cr, and nitinol shape memory alloys are the most frequently used metallic materials. These alloys are prone to corrosion in various extents. This review briefly discusses the important biomaterials, their properties, and the physiological environment to which these materials are exposed. Corrosion performance of currently used metallic materials has been assessed and threat to the biocompatibility from corrosion products/metal ions is discussed. The possible preventive measures to improve corrosion resistance by surface modification and to increase the bioactivity of the metallic surfaces have also been discussed. Importance of the formation of oxide layers on the metal surface, another aspect of corrosion process, has been correlated with the host response. The gap areas and future direction of research are also outlined in the paper.

Item Type:Article
Official URL/DOI:DOI: 10.1007/s10856-006-0016-y
Uncontrolled Keywords:austenitic stainless-steels; shape-memory alloys; titanium-oxide films; X-ray photoelectron; In-vitro corrosion; electrochemical impedance spectroscopy; immersion ion-implantation; total joint replacement; cobalt-chromium alloy; simulated body-fluid
Divisions:Corrosion and Surface Engineering
ID Code:3430
Deposited On:18 Jul 2011 12:37
Last Modified:09 Feb 2012 12:51
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