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爆炸喷涂WC-Co/MoS_2-Ni多层复合自润滑涂层的摩擦学行为
Tribological Behavior of Multi-layered WC-Co/MoS_2-Ni Self-lubricating Coating Fabricated by Detonation Gun Spraying

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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  
文摘 采用爆炸喷涂技术研制WC-Co/MoS_2-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MoS_2发生氧化分解,生成SO_2气体,残留在涂层内的SO_2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MoS_2-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。
其他语种文摘 The multilayered composite WC-Co/MoS_2-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 MoS_2 is oxidized and decomposed into gas of SO_2 during the high-temperature spraying process. The SO_2 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 MoS_2-Ni,but the friction coefficient decreases by about 40 %,and the wear resistance is also improved slightly.
来源 材料工程 ,2017,45(3):73-79 【核心库】
DOI 10.11868/j.issn.1001-4381.2016.000002
关键词 WC-Co/MoS_2-Ni涂层 ; 自润滑涂层 ; 爆炸喷涂 ; 摩擦磨损
地址

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

语种 中文
文献类型 研究性论文
ISSN 1001-4381
学科 机械、仪表工业
基金 国家自然科学基金 ;  天津市自然科学基金 ;  天津市科技特派员项目 ;  天津市高等学校创新团队培养计划项目 ;  天津职业技术师范大学科研发展基金
文献收藏号 CSCD:5949319

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引证文献 6 篇

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CSCD被引 10 次

2 韩志伟 低温爆炸喷涂WC涂层的理论与实验研究 稀有金属材料与工程,2019,48(6):1867-1871
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