表面改質ローラの高真空中における摩擦-摩耗 : 平歯車試験とローラ試験の比較

概要

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To clarify the friction and wear characteristics of surface modified rollers in vacuum, two cylinder test was carried out under non-lubricating condition in high vacuum less than 2 × 10^<-3> Pa. Thermal diffusion after Sn plating (Sn), electroless Ni-P plating (Ni-P) and sulfurizing were employed here. Friction coefScient of the surface modified rollers was smaller than that of non-coated rollers. The initial friction coefficient of Sn plated rollers increased under low contact pressure, where wear particles were transferred onto the frictional surface, while the friction coefficient decreased when surface modified layer worn uniformly. The sulfurizing contributed to the reduction of the initial friction. The friction behavior of Ni-P plated rollers indicated the most stable in all test rollers. In addition, the relation between the test results in the two cylinder tests and the previous gear tests in high vacuum using the same surface modification treatment as employed in these two cylinder tests was evaluated. The initial friction in the two cylinder test was greater than that in the gear test in the cases of non coat, Sn and Ni-P. However, where sliding distance was large enough, the friction behavior in the gear test was similar to that in the two cylinder test.
一般社団法人日本機械学会の論文
1999-05-25