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| Abstract No.: |
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Scheduled at:
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Wednesday, May 05, 2010, Sophia Room 2:00 PM
Wear Protection 3
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| Title: |
Tribological analysis of WC cermet coatings with friction test under tensile stress condition
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| Authors: |
Fumihiro Itoigawa / Nagoya Institute of Technology, Japan
Kei Nomakuchi* / Nagoya Institute of Technology, Japan
Kazuto Sato/ Fujimi Incorporated Co. Ltd., Japan
Junya Kitamura/ Fujimi Incorporated Co. Ltd., Japan
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| Abstract: |
This paper describes that the wear and friction behavior of some WC cermet spray coatings deposited on carbon steel was investigated to clarify the difference in tribological characteristics depending on these structure and chemical composition. Friction tests are carried out under the several tensile stress conditions in order to reveal the influence of the cohesiveness of the splats, porosity and inclusions on the friction and wear. It is found that, if the coatings are under nonequilibrium stress state and large inclusions are precipitated unevenly, the wear characteristics have lower sensitivity to tensile stress whereas, if not, the tensile stress plays an important role in the wear characteristics. From the experimental results it is suggested that the coatings with an adequate annealing treatment or deposited with a lower temperature spray process can possess more preferred tribological characteristics.
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