闫明明,杜三明,孔二雷,张永振,牛永平

• 1:河南科技大学材料科学与工程学院
• 2:河南科技大学高端轴承摩擦学技术与应用国家地方联合工程实验室
• 3:河南科技大学化工与制药工程学院

摘要(Abstract)：

采用等离子喷涂技术在45钢基体上制备10%Ni-AT13复合涂层,利用QG-700型球-盘式摩擦磨损试验机在室温干摩擦条件下对其进行了摩擦磨损试验;利用显微硬度计、万能拉伸试验机、扫描电镜(SEM)及X射线衍射仪(XRD)等对涂层的力学性能、微观组织进行了表征分析,并研究了去应力退火(300℃保温3 h)对10%Ni-AT13涂层性能的影响。结果表明:涂层呈典型的层片状结构分布,由熔融区和半熔区组成,涂层与基体之间的结合良好;XRD结果显示涂层有新相Al_2TiO_5和Ni_2O_3生成,退火对涂层的组织成分无影响;与退火前相比,涂层的力学性能得到明显的提高,其中结合强度提高了78.7%、显微硬度提高了43.6%、断裂韧性提高了64.1%;退火后,在摩擦过程中摩擦系数高低变化不大,但波动性减小;涂层的磨损率比退火前小,耐磨性得到了提高。

关键词(KeyWords)： 等离子喷涂;退火;复合涂层;摩擦磨损

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51375146);; 清华大学摩擦学国家重点实验室开放基金(SKLTKF15B02)

作者(Author): 闫明明,杜三明,孔二雷,张永振,牛永平

DOI: 10.13289/j.issn.1009-6264.2017-0088

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