硬质涂层与奥氏体不锈钢摩擦磨损性能研究

发布时间：2018-06-26 19:02

本文选题：奥氏体合金 + TiAlN涂层　；参考：《真空科学与技术学报》2017年01期

【摘要】：采用多弧离子镀技术在硬质合金YG8上制备了表面高铝含量的Ti33Al67N、中铝含量的Ti50Al50N复合涂层和Cr_(30)Al_(70)lN单层涂层。采用摩擦磨损仪系统研究了以上涂层与奥氏体304合金间的摩擦磨损行为。利用扫描电镜、电子能谱仪、显微硬度仪、划痕仪等对涂层性能及表面形貌、磨痕形貌及成分进行表征。试验结果表明:同含钛的表面涂层Ti33Al67N和Ti50Al50N相比,Cr_(30)Al_(70)N涂层与奥氏体304合金的亲和力更低,减少了摩擦过程中304合金在Cr_(30)Al_(70)N涂层表面的涂抹量。涂层最主要的磨损失效方式是局部撕裂,局部撕裂的本质是硬质合金基体同304合金直接接触导致高强度结点。复合涂层Cr_(30)Al_(70)N/Ti_(50)Al_(50)N及单层的Cr_(30)Al_(70)N涂层膜基结合力高,表现出优于Cr_(30)Al_(70)N/Ti_(33)Al_(67)N复合涂层的抗摩擦磨损性能;前两者磨痕表面检出的W元素含量仅为Cr_(30)Al_(70)N/Ti_(33)Al_(67)N涂层的1/10。
[Abstract]:Ti33Al67N, Ti50Al50N and Cr30Al70lN monolayer coatings with high Al content, Ti50Al50N and Cr30Al70lN were prepared on cemented carbide YG8 by multi-arc ion plating technique. The friction and wear behaviors between the coating and austenitic 304 alloy were studied by friction and wear tester. SEM, EDS, microhardness and scratch tester were used to characterize the properties, surface morphology, wear morphology and composition of the coatings. The results show that compared with Ti33Al67N and Ti50Al50N coatings containing titanium, the affinity of Cr30Al70N coating with austenitic 304 alloy is lower, and the coating amount of 304 alloy on Cr30Al70N coating surface during friction is reduced. The main wear failure mode of the coating is local tear, the essence of local tear is the high strength joint caused by the direct contact between the cemented carbide matrix and 304 alloy. The composite coating Cr _ (30) Al _ (70) N / Ti _ (50) Al _ (50) N and the single layer of Cr _ (30) Al _ (70) N coating have a higher adhesion to friction and wear than the Cr _ (30) Al _ (70) N / Ti _ (33) Al _ (67) N composite coating, and the W content of the first two wear marks is only 11010N than that of the Cr _ (30) Al _ (70) N / Ti _ (33) Al _ (67) N coating.
【作者单位】：华南理工大学材料科学与工程学院;广州今泰科技股份有限公司;
【基金】：广东省科技厅项目(2015B090923006) 广州市科技项目(201604010020):
【分类号】：TG174.4

【相似文献】