Avaliação da resistência à corrosão em meio fisiológico de metais revestidos com nitreto de titânio. / Evaluation of the resistance to the corrosion in physiologic environment of metals covered with titanium nitrite.
AUTOR(ES)
André Luís Paschoal
DATA DE PUBLICAÇÃO
1998
RESUMO
Metals are very much used as implantable materials mainly for the construction of devices orthopaedic area. There is a constant concern about the corrosion process in those metallic biomaterials due to the aggressiveness of the physiological environment. By using four types of metals and metallic alloys pure titanium, titanium alloy, low carbon stainless steel and cobalt-chromium alloy the corrosion process in physiologic environment has been studied. Also, the performance of such materials coated with titanium nitrate was evaluated. Two PVD coating methods evaporation and magnetron sputtering were performed, and the efficiency of those materials in physiologic medium was verified. The best behaviour was found by the evaporation coating method. The predominant corrosion mechanism for coated samples was suggested.
ASSUNTO(S)
coating biomateriais metálicos metallic biomaterials nitreto de titânio titanium nitrite revestimento
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