滑り軸受試験によるAl_2O_3の摩擦・摩耗 : Sialon, ZrO_2, Al_2O_3 および SUS304 と組合された場合

概要

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Journal sliding bearing tests were performed under non-lubricated and water-lubricated conditions. Journals made of Al_2O_3 were slid against bushes made of Sialon, ZrO_2, Al_2O_3, and SUS304 stainless steel. The Al_2O_3/Al_2O_3 combination exhibited the best performance under these test conditions. The wear amount and friction coefficient under the water-lubricated condition were smaller than those under the non-lubricated condition except for the case of Sialon/Al_2O_3 combination. The wear of Sialon might be increased under the influence of the hydrate formed on the sliding surface by tribochemical reaction. The wear amount of Al_2O_3 journal was largest in the case of SUS304/Al_2O_3 combination, in which the wear mode was micro-chipping. On application of Al_2O_3 under the water-lubricated condition, wear of Sialon in the case of Al_2O_3/Sialon combination, stress corrosion wear of ZrO_2 in the case of Al_2O_3/ZrO_2 combination, and wear of Al_2O_3 by micro-chipping in the case of Al_2O_3/SUS304 combination must be considered.
1997-10-25