Abstract
The unlubricated tribological characteristics of coating layers containing an Fe-based amorphous matrix have been investigated in air using an alumina ball with a diameter of 3.1 mm. From the ball-on-disk test system, the friction coefficient could be measured for up to 3,000 seconds. The temperature changes on the worn surfaces were also simultaneously measured using an infrared thermometer. Three different types of coating layers having an Fe-based amorphous matrix, an Fe-based amorphous matrix with embedded Ni-based self-fluxing alloy particles, and an Fe-based amorphous matrix with embedded WC particles were prepared through a high velocity oxy-fuel (HVOF) process. Although the coating layers have certain levels of porosity, unique frictional characteristics attributed to the amorphous matrix were observed during the friction tests. Compared with conventional bearing steels such as AISI 521000 (Hv=840), excellent tribological and wear characteristics were obtained, demonstrating that an Fe-based bulk metallic glass powder is a viable engineering material for practical anti-wear coating applications.
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Seock-Sam Kim received his B.S. and M.S. degrees in Mechanical Engineering from Kyungpook National University, Korea, in 1973 and 1976, respectively. He received his Ph. D. in Mechanical Engineering from Tohoku University in 1987. He is currently a Professor at the school of Mechanical Engineering, Kyungpook National University, Korea. His research interests are in the area of fracture mechanics and tribology.
Seong-Hoon Yi received his B.S. and M.S. degrees in Materials Science and Engineering from Korea University, Korea, in 1984 and 1986, respectively. He received his ph. D. in Materials Science and Engineering from the University of Wisconsin-Madison in 1997. He is currently a Professor at the Department of Materials Science and Engineering, Kyungpook National University. His research interests are in the area of development and application for Bulk Metallic Glasses.
Beom-Taek Jang received his M.S. degree in Mechanical Engineering from Kyungpook National University in 2006. He is currently working on a doctoral course at the same department of Kyungpook National University in Daegu, Korea. His research interests include tribology, and FEM analysis of surface contact problem.
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Jang, BT., Yi, SH. & Kim, SS. Tribological behavior of Fe-based bulk metallic glass. J Mech Sci Technol 24, 89–92 (2010). https://doi.org/10.1007/s12206-009-1123-8
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DOI: https://doi.org/10.1007/s12206-009-1123-8