軸受用セラミックスの高温転がり疲労特性 : 高温転がり疲労試験機の試作と一,二の試験結果

概要

論文の詳細を見る
A rolling-contact fatigue test machine for ceramic bearings was constructed to investigate the rolling-contact fatigue properties of ceramics at elevated temperature. The coefficient of the friction between the balls and test pieces can be measured in the test machine. Preliminary tests were carried out using test pieces, balls and races of silicon nitride. The rolling-contact fatigue lives of ceramic bearings at room temperature with no lubrication were around 10^6 cycles when the maximum Hertz stress was 2.7 GPa, which is longer than that of ordinary metallic bearings. At a temperature of 500℃, the rolling-contact lives of the ceramic bearings were almost equal to or one-tenth of those at room temperature. These results suggest that ceramics has great possibilities for bearing material under severe conditions, such as elevated temperature and no lubrication.
一般社団法人日本機械学会の論文
1988-03-25