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Master's Dissertation
DOI
10.11606/D.88.1998.tde-02072003-093007
Document
Author
Full name
André Luís Paschoal
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Carlos, 1998
Supervisor
Committee
Canale, Lauralice de Campos Franceschini (President)
Andreeta, Jose Pedro
Higa, Olga Zazuco
Title in Portuguese
Avaliação da resistência à corrosão em meio fisiológico de metais revestidos com nitreto de titânio.
Keywords in Portuguese
biomateriais metálicos
nitreto de titânio
revestimento
Abstract in Portuguese
Metais são bastante usados como materiais implantáveis, principalmente para dispositivos feitos na área de ortopedia. Há uma constante relação dos processos de corrosão nesse biomateriais com a agressividade do meio fisiológico. Usando quatro tipo de metais e ligas metálicas – titânio puro, liga de titânio, aço inoxidável de baixo carbono e liga de cobalto – o processo de corrosão foi estudado. Além disso, o desempenho desses materiais revestidos com nitreto de titânio foi avaliado. Dois processos de revestimento por PVD – evaporação e magnetron sputtering – foram executados, verificando a eficiência desses materiais em meio fisiológico - O melhor comportamento se deu para o revestimento obtido por evaporação. O mecanismo de corrosão predominante para as amostras foi indicado.
Title in English
Evaluation of the resistance to the corrosion in physiologic environment of metals covered with titanium nitrite.
Keywords in English
coating
metallic biomaterials
titanium nitrite
Abstract in English
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.
 
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dissertandre.pdf (8.78 Mbytes)
Publishing Date
2003-09-01
 
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