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发明公开
CN103857823A 活塞环 有权 转让

活塞环
摘要：
本发明提供活塞环(1)，其特征在于，具备作为硬质相含有碳化钨和碳化铬、作为金属粘合相含有镍的喷涂膜(3)，喷涂膜(3)通过喷涂由造粒烧结法制备的喷涂粉末而形成，所述喷涂粉末含有通过BET法在0.15μm以上且0.45μm以下的范围内调整碳化钨的平均粒径而得的硬质粒子。
摘要（英）：

A piston ring (1) that has a sprayed coating (3) containing tungsten carbide and chromium carbide as a hard phase, and nickel as a metallic binder phase, and is characterized in that the sprayed coating (3) is formed by means of thermal spraying of thermal spray powders which are produced by using a granulation sintering method, said thermal spray powders containing hard particles for which the average grain size of the tungsten carbide has been adjusted in the range of 0.15[mu]m to 0.45[mu]m by means of a BET method.

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