The Effect of Plasma Nitridation on Surface Hardness of Titanium Alloy (Ti-6Al-4V) for Artificial Knee Joint Applications

Angga Yunis Prasetya; Darmanto Darmanto; Muhammad Dzulfikar

doi:10.14710/jbiomes.2021.v1i2.49-53

DOI: https://doi.org/10.14710/jbiomes.2021.v1i2.49-53

The Effect of Plasma Nitridation on Surface Hardness of Titanium Alloy (Ti-6Al-4V) for Artificial Knee Joint Applications

Angga Yunis Prasetya - Department of Mechanical Engineering, Faculty of Engineering, Universitas Wahid Hasyim, Indonesia

*Darmanto Darmanto

- Department of Mechanical Engineering, Faculty of Engineering, Universitas Wahid Hasyim, Indonesia

Muhammad Dzulfikar - Department of Mechanical Engineering, Faculty of Engineering, Universitas Wahid Hasyim, Indonesia

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Abstract

Nitriding has been carried out using plasma nitriding techniques for surface treatment of Titanium as a biomaterial component. The purpose of this study was to determine the effect of plasma nitriding on surface hardness that occurs in titanium. The material used is Titanium Alloy (Ti-6Al-4V) Grade 5 which is processed by plasma nitriding by varying nitrogen (N₂) and argon (Ar) gases of (100% N₂/0% Ar), (95% N₂/5% Ar), (90% N₂/10% Ar), (85% N₂/15% Ar), (80% N₂/20% Ar), and (75% N₂/25% Ar), and temperature 400ºC, time 5 hours and a pressure of 1.6 bar. The test results show that the optimum hardness is found in the gas composition with a ratio of 95% N₂: 5% Ar. Obtained a hardness of 371 HV/VHN or an increase of 159% of the raw material with hardness value of 143 HV/VHN

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Keywords: Titanium Alloy, Plasma Nitridation, Hardness, gas, nitrogen, argon

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Section: Articles

Language : EN

In Vol 1, No 2 (2021)

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