###
DOI:
有色金属工程:2021,(10):-
←前一篇   |   后一篇→
本文二维码信息
码上扫一扫!
热喷涂TiC-NiCr涂层的磨损行为及机理
国俊丰, 夏春阳
(北矿新材科技有限公司)
Wear behavior and mechanism of thermal sprayed TiC-NiCr coating
guojunfeng, xiachunyang
(BGRIMM Advanced Materials & Sicence Technology Co.,Ltd)
摘要
图/表
参考文献
相似文献
本文已被:浏览 843次   下载 2557
投稿时间:2021-06-18    修订日期:2021-06-29
中文摘要: 采用超音速火焰喷涂工艺制备得到了新型TiC-30NiCr涂层,系统地表征分析了涂层的相结构、显微组织和摩擦磨损行为,并与传统的WC-CoCr涂层进行了耐磨损性能的比较。研究发现,热喷涂过程中TiC脱碳转变为了Ti8C5相,绝大部分Cr固溶于Ni相中。在往复摩擦过程中,单质态Cr在摩擦热作用下发生了氧化,同时有少量的氮化硅摩擦副的磨屑嵌入了Ni(Cr)粘结相中。在摩擦应力作用下,层片间疲劳裂纹的扩展、碳化钛和Ni(Cr)相界面的开裂是导致TiC-NiCr涂层发生大块材料剥落的主要原因。虽然与传统WC-CoCr涂层相比,制备的TiC-NiCr涂层的硬度和耐磨性均较低,但其在要求成本低、对环境有好、同时具有较好耐磨性的工况环境中将具有重要的应用前景。
Abstract:The new TiC-30NiCr coating is prepared by supersonic flame spraying process. The phase structure, microstructure and frictional wear behavior of the coating are systematically characterized, and the wear resistance performance of this coating is compared with the traditional WC-CoCr coating. The research finds that during thermal spraying, TiC decarbonization was converted into Ti8C5 phase, and the vast majority of Cr solidified in Ni phase. During reciprocating friction and with the conditions of frictional heat, monomorphic Cr oxidizes and a small amount of silicon nitride frictional sub-friction chips are embedded in the Ni(Cr) bonding phase. Under friction stress, the expansion of fatigue cracks between layers, titanium carbide and Ni(Cr) phase interface cracking are the main reasons of large areas peeling of TiC-NiCr coatings. Although the TiC-NiCr coating is less hard and wear resistant than conventional WC-CoCr coatings, it will have important application prospects in special environments which the costs are low, the environment is friendly, and the wear resistance is excellent.
文章编号:     中图分类号:    文献标志码:
基金项目:
引用文本:
国俊丰,夏春阳.热喷涂TiC-NiCr涂层的磨损行为及机理[J].有色金属工程,2021,(10):.

我们一直在努力打
造,精品期刊,传
播学术成果

全国咨询服务热线
86-10-63299224

杂志信息

期刊简介

相关下载

联系我们

电话:86-10-63299224/63299153

传真:010-63299754

Email:ysjsgc@bgrimm.com

邮编:100160

地址:北京市南四环西路188号总部基地十八区23号楼

关注微信公众号