爆炸喷涂WC-Co/MoS2-Ni多层复合自润滑涂层的摩擦学行为

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。...

Full description

Saved in:
Bibliographic Details
Published in材料工程 Vol. 45; no. 3; pp. 73 - 79
Main Author 王铁钢 李柏松 阎兵 范其香 刘艳梅 宫骏 孙超
Format Journal Article
LanguageChinese
Published 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%中国科学院金属研究所,沈阳,110016 2017
Subjects
WC-Co/MoS2-Ni涂层
摩擦磨损
爆炸喷涂
自润滑涂层
WC-Co/MoS2-Ni coating
WC-Co/MoS2-Ni涂层
self-lubricating coating
friction and wear
自润滑涂层
摩擦磨损
爆炸喷涂
detonation gun spraying
Online AccessGet full text
ISSN1001-4381
1001-4381
DOI10.11868/j.issn.1001-4381.2016.000002

Cover

More Information
Summary: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。
Bibliography:11-1800/TB
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）
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
ISSN:1001-4381
1001-4381
DOI:10.11868/j.issn.1001-4381.2016.000002