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Updated: Dec 17, 2025
Rapid Formation and Testing of Self-expanding NiTi Frames with a Small Form Factor Suitable for Minimally Invasive Implants
Published on: March 7, 2025
Hollow cathode plasma nitriding of medical grade Ti6Al4V: A comprehensive study
Cristian Padilha Fontoura1, Melissa Machado Rodrigues1, Charlene Silvestrin Celi Garcia2
1Área do Conhecimento de Ciências Exatas e Engenharias, Programa de Pós-Graduação em Engenharia e Ciência dos Materiais (PPGMAT), Universidade de Caxias do Sul, Caxias do Sul, Brazil.
Abstract:
Ti6Al4V used in biomedical applications still has several surface-related problems, such as poor bone compatibility and low wear resistance. In this work, the formation of a protective layer of titanium nitride obtained by plasma treatment in hollow cathode was studied, and the best experimental conditions were verified by a statistical factorial design of experiments. The samples were characterized in terms of their physical and chemical properties, correlating the effects of time (min) and temperature (°C). An achieved ideal condition was further analysed in terms of in vitro cytotoxicity, micro-abrasion, and electrochemical properties. The carried-out assessment has shown that nitrided condition has an improvement in wettability, microhardness, along with TixNy formation and roughness increment, when compared to pristine condition.
