SiCの摺動条件による摩耗機構の変化 : 摩耗状態図(Wear Map)による考察

概要

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Sliding wear properties of ceramics have been tested under various conditions, and many models have been proposed for the wear mechanism. However, systematic research on the relation between wear rate and wear mechanism has been insufficient in comparison with metal. In a previous study, we analyzed wear of ceramics by an indentation fracture model, and recognized the applicable limits of this model. In this study of SiC ceramics, the effect of material combination and sliding conditions such as vertical load and sliding speed on wear properties was studied with a pin-on-disk wear tester. Wear properties were classified to four kinds of mechanisms from observation of the frictional surface after sliding test using an SEM and optical microscope, and were rearranged systematically in a wear map. The extreme change of wear was observed at a vertical load or the sliding speed at which wear mechanism changes. In particular, when the data which were considered due to wear by indentation fracture were analyzed, the wear rate including SiC combinations with other ceramics could be assessed by this model, and the adequacy of this classification of wear mechanism was confirmed quantitatively.
社団法人日本セラミックス協会の論文
1990-09-01