Journal of the Japan Society of Powder and Powder Metallurgy
Online ISSN : 1880-9014
Print ISSN : 0532-8799
ISSN-L : 0532-8799
Paper
Formation and Microstructural Characterization of Ti/TiC Surface Composite Layer by Laser Alloying Treatment Using Graphite Powder
Takuto YAMAGUCHIHideki HAGINOMamoru TAKEMURAAtsushi NAKAHIRA
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JOURNAL OPEN ACCESS

2014 Volume 61 Issue 10 Pages 481-486

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Abstract
Titanium and its alloys have various excellent properties, such as good corrosion resistance and high specific strength. However, they have not been applied to the sliding parts under sever wear condition due to their poor tribological properties.
In this study, laser alloying using graphite powder was carried out to form Ti/TiC composite surface layer on commercial pure titanium substrate for improving wear resistance. The effects of graphite powder size and laser irradiation parameters on the microstructure of laser alloyed zone were mainly investigated. In the laser alloyed zone, dendritic primary TiC and fine particles of eutectic TiC were observed. In the condition of higher laser traverse speed and larger size of graphite powder, undissolved graphite particles were observed.
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© 2014 by Japan Society of Powder and Powder Metallurgy

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