113 CN_X膜と窒化ケイ素球のすべり摩擦特性に及ぼす窒素の影響

概要

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During the sliding between CN_x and ceramics, applying nitrogen as environmental gas provided very low friction as the level of 0.01 in friction coefficient. After several friction tests and chemical analysis, we found specific results on nitrogen lubricated sliding between CN_x coatings and ceramic balls. Lubrication effects of nitrogen in CN_x coating sliding against ceramics pin was only occurred for a Si_3N_4 pin. Higher pressure of nitrogen provided lower friction coefficient. In the case of low friction coefficient in nitrogen, there are few wear particles on the contact surfaces and an increase of sp^2 bonding. One of the lubrication effects of nitrogen is the decrease of wear particles on the sliding surfaces. A sp^2 rich structures which have low shear strength bonds was considered to cause low friction.
一般社団法人日本機械学会の論文
2001-03-30