高温高圧水中におけるTiC添加Cr_3C_2焼結体の摩擦・摩耗特性(セラミック材料小特集)

概要

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The effects of temperature and sliding speed on the tribological behavior of Cr_3C_2 with addition of TiC sliding on itself in deoxygenated water were investigated from room temperature to 300℃ under the corresponding saturated vapor pressures. The friction coefficient increased at elevated temperatures at all sliding speeds, but decreased with increasing sliding speed. The specific wear rate of the disk was larger than that of the plate, and the dependence of the specific wear rate of the disk on sliding speed was different from that of the plate. The friction and wear properties of the material are considered to be controlled by tribochemical reactions to produce H_2, C, CH_4, C_2H_6 and CO_2 and by microfracture. The relative molar ratios (H_2/CH_4, C_2H_6/CH_4) where H_2, CH_4 and C_2H_6 were produced by the sliding friction were constant for all the wear tests. The relative molar ratio (H_2/CH_4) for the wear test at 300℃ was smaller than that at the static corrosion of the specimens under the same hydrothermal condition as the wear test.
社団法人日本材料学会の論文
1994-06-15