black k oxide coating 发黑
·2,447,543篇论文数据，部分数据来源于NoteExpress
Results indicated that wear resistance and corrosion resistance of black TiN coating were higher than that of black oxide film or phosphatizing films.
结果表明，其耐磨损、耐腐蚀性能均高于氧化和磷化黑色膜层。
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