Metallic Biomaterials TiN-Coated: Corrosion Analysis and Biocompatibility

Authors

  • André Luís Paschoal,

    1. Departamento de Engenharia de Materiais, Aeronautica e Automobilistica, Escola de Engenharia de São Carlos, Universidade de São Paulo; and Instituto de Quimica de São Carlos, Universidade de São Paulo, São Carlos, SP, Brazil.
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  • Everaldo Carlos Vanâncio,

    1. Departamento de Engenharia de Materiais, Aeronautica e Automobilistica, Escola de Engenharia de São Carlos, Universidade de São Paulo; and Instituto de Quimica de São Carlos, Universidade de São Paulo, São Carlos, SP, Brazil.
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  • Lauralice de Campos Franceschini Canale,

    1. Departamento de Engenharia de Materiais, Aeronautica e Automobilistica, Escola de Engenharia de São Carlos, Universidade de São Paulo; and Instituto de Quimica de São Carlos, Universidade de São Paulo, São Carlos, SP, Brazil.
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  • Orivaldo Lopes da Silva,

    1. Departamento de Engenharia de Materiais, Aeronautica e Automobilistica, Escola de Engenharia de São Carlos, Universidade de São Paulo; and Instituto de Quimica de São Carlos, Universidade de São Paulo, São Carlos, SP, Brazil.
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  • Domingos Huerta-Vilca,

    1. Departamento de Engenharia de Materiais, Aeronautica e Automobilistica, Escola de Engenharia de São Carlos, Universidade de São Paulo; and Instituto de Quimica de São Carlos, Universidade de São Paulo, São Carlos, SP, Brazil.
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  • Artur de Jesus Motheo

    1. Departamento de Engenharia de Materiais, Aeronautica e Automobilistica, Escola de Engenharia de São Carlos, Universidade de São Paulo; and Instituto de Quimica de São Carlos, Universidade de São Paulo, São Carlos, SP, Brazil.
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  • Presented in part at the 2nd Latin American Congress for Artificial Organs and Biomaterials, held December 2001, in Brazil.

Address correspondence and reprint requests to Dr. Andre Luis Paschoal, Departamento de Engenharia de Materiais, Aeronautica e Automobilistica, Escola de Engenharia de São Carlos, Universidade de Sao Paulo, Avenida Trabalhador Sancarlense, no 400, Centro, CEP 13.566, 590, São Carlos, SP, Brazil. E-mail: lfcanale@sc.usp.br

Abstract

Abstract: Corrosion processes due to contact with the physiological environment should be avoided or minimized in orthopedic implants. Four metallic substrates frequently used as biomaterials: pure Ti, Ti-6Al-4V alloy, ASTM F138 stainless steel, and Co-Cr-Mo alloy, were coated with TiN using the physical vapor deposition (PVD) technique. These coatings have been screened by polarization curves in physiological solutions. TiN prepared by PVD is efficient as coating for stainless steel. On titanium and alloy there are no benefits concerning the corrosion resistance compared to the bare Ti-materials. TiN coatings have been screened according to ISO 10993 standard tests for biocompatibility and exhibited no cytotoxicity, dermal irritation, or acute systemic toxicity response.

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