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材料工程  2017, Vol. 45 Issue (3): 73-79    DOI: 10.11868/j.issn.1001-4381.2016.000002
  研究论文 本期目录 | 过刊浏览 | 高级检索 |
王铁钢1, 李柏松1, 阎兵1, 范其香1, 刘艳梅1, 宫骏2, 孙超2
1. 天津职业技术师范大学 天津市高速切削与精密加工重点实验室, 天津 300222;
2. 中国科学院 金属研究所, 沈阳 110016
Tribological Behavior of Multi-layered WC-Co/MoS2-Ni Self-lubricating Coating Fabricated by Detonation Gun Spraying
WANG Tie-gang1, LI Bai-song1, YAN Bing1, FAN Qi-xiang1, LIU Yan-mei1, GONG Jun2, SUN Chao2
1. Tianjin Key Laboratory of High Speed Cutting and Precision Processing, Tianjin University of Technology and Education, Tianjin 300222, China;
2. Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
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摘要 采用爆炸喷涂技术研制WC-Co/MoS2-Ni多层复合自润滑涂层,系统研究涂层的微观结构、元素分布、结合强度和摩擦磨损性能。结果表明:在高温爆炸喷涂过程中,少量MoS2发生氧化分解,生成SO2气体,残留在涂层内的SO2气体可使局部形成微小孔洞。在摩擦测试中,WC-Co涂层在预磨阶段摩擦因数迅速上升,进入稳定阶段后,摩擦因数缓慢增加;而多层复合涂层的摩擦因数在经历预磨阶段迅速上升后,很快进入稳定阶段,直至表层WC-Co涂层被磨穿后,摩擦因数开始逐渐下降。添加自润滑涂层MoS2-Ni后,WC-Co涂层的内聚结合强度略有下降,但减摩效果显著,摩擦因数下降了约40%,耐磨性能略有提升。
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关键词 WC-Co/MoS2-Ni涂层自润滑涂层爆炸喷涂摩擦磨损    
Abstract:The multilayered composite WC-Co/MoS2-Ni self-lubricating coatings were prepared by detonation gun spraying technology. The coating microstructure, element distribution, adhesive strength, and tribological properties were studied systematically. The results show that a little of MoS2 is oxidized and decomposed into gas of SO2 during the high-temperature spraying process. The SO2 left in the coating and can form into the micro porosities. The friction coefficient of the WC-Co coating first increases rapidly in the initial running-in phase, and then gradually increases slightly after entering into the steady-state phase; whereas the friction coefficient of multilayer composite coating steps in the steady-state phase soon and starts to decline gradually when the top WC-Co coating became perforated. By comparison, the coating cohesion declines slightly after adding the self-lubricating layer MoS2-Ni, but the friction coefficient decreases by about 40%, and the wear resistance is also improved slightly.
Key wordsWC-Co/MoS2-Ni coating    self-lubricating coating    detonation gun spraying    friction and wear
收稿日期: 2016-01-04      出版日期: 2017-03-22
中图分类号:  TH117.3  
通讯作者: 王铁钢(1978-),男,副教授,博士后,研究方向:硬质涂层,联系地址:天津市高速切削与精密加工重点实验室(300222),;     E-mail:;
王铁钢, 李柏松, 阎兵, 范其香, 刘艳梅, 宫骏, 孙超. 爆炸喷涂WC-Co/MoS2-Ni多层复合自润滑涂层的摩擦学行为[J]. 材料工程, 2017, 45(3): 73-79.
WANG Tie-gang, LI Bai-song, YAN Bing, FAN Qi-xiang, LIU Yan-mei, GONG Jun, SUN Chao. Tribological Behavior of Multi-layered WC-Co/MoS2-Ni Self-lubricating Coating Fabricated by Detonation Gun Spraying. Journal of Materials Engineering, 2017, 45(3): 73-79.
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