Journal
COATINGS
Volume 9, Issue 11, Pages -Publisher
MDPI
DOI: 10.3390/coatings9110694
Keywords
thermo plasma nitriding; Cu-Ti film; Cu-Ti intermetallics; wear resistance
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Funding
- University Research Foundation of Nanjing Institute of Technology [YKJ201805]
- National Natural Science Foundation of China [U1537201]
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To improve the surface wear resistance, plasma nitriding of the prefabricated Cu-Ti films on the C17200 Cu alloy is performed to investigate the effects of the composition of the Cu-Ti films on the microstructure and the mechanical properties of the modified surface. The results firstly showed that obvious microstructure evolution appeared during the thermo-plasma nitriding process, where both the surface morphology of the composed phases and the cross-sectional profiles of the multiphase coatings varied for the three types of films. Small amounts of Ti-N compounds, Be3Ti2Cu, and different types of Cu-Ti intermetallics formed in the multiphase coating after plasma nitriding, which is dependent on the composition of the prefabricated Cu-Ti film. Correspondingly, the surface hardness and the wear resistance of the C17200 Cu substrates were obviously improved, with the obtained adhesive strength of the substrate reaching a satisfactory range.
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