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Surface modification of commercially pure titanium by plasma nitrocarburizing at different temperatures and duration process

By Agung Setyo Darmawan, Waluyo Adi Siswanto and Tjipto Sujitno

Abstract

One of potential metals to be used in biomechanical applications is the commercially pure (cp) titanium. This material requires a process to improve the mechanical properties of the surface, because it is relatively soft. The purpose of this study is to determine the effect of plasma nitro carburizing process to cp titanium surface hardness. In this study, cp titanium plasma nitro carburizing process is conducted at different temperatures, i.e., at 350°C for 3, 4, and 5 h, and at 450°C for 2, 3, and 4 h, respectively. Hardness tests are then performed on each specimen. The depth of penetration in the hardness test is also recorded; the microstructure captures are also taken using an optical microscope. The results show that the longer processing time, the higher the hardness value. In higher temperature, the hardness values correspond to the increasing temperature. In terms of the depth direction, there is a reduction in hardness value compared to the raw material

Topics: Q Science (General), TJ Mechanical engineering and machinery
Publisher: Maxwell Scientific Organization
Year: 2013
OAI identifier: oai:eprints.uthm.edu.my:3540
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