摘要
为了改善模具钢表面质量,采用多弧离子镀技术在H13模具钢表面沉积CrAlN薄膜,探讨H13钢基体表面渗氮处理后对薄膜表面形貌、硬度、结合力、抗氧化性和摩擦磨损性能的影响。结果表明:基体表面渗氮处理前后制备的CrAlN涂层表面均匀致密,都有少量的大颗粒,涂层表面均呈CrN(200)面择优取向,而渗氮后制备的涂层CrN(200)面择优取向更强;基体H13钢经过表面渗氮后,硬度显著提高,对制备的涂层具有支撑作用,降低了裂纹产生倾向,提高了涂层产生裂纹的临界载荷,提高了涂层的膜基结合力;相较于基体表面未渗氮处理制备的CrAlN涂层,基体表面渗氮后制备的CrAlN涂层具有更高的硬度和结合力,更为优异的摩擦磨损性能,且抗高温氧化性能显著增强。
In order to improve the surface quality of die steel,CrAlN films were deposited on H13 die steel by multi arc ion plating technology.The effects of surface nitriding treatment of die steel substrate on the surface morphology,hardness,adhesion,oxidation resistance and friction and wear properties of the deposited films were investigated.The results show that the surface of CrAlN coating prepared before and after surface nitriding treatment of the substrate is uniform and dense,with a small amount of large particles.The surface of CrAlN coating shows the preferred orientation of CrN(200)surface,and the preferred orientation of CrAlN coating prepared after nitriding treatment is stronger.After surface nitriding treatment,the hardness of H13 steel substrate is significantly improved,which can support the prepared coating,reduce the tendency of cracks,increase the critical load of cracks in the coating,and improve the film substrate bonding force of the coating.Compared to the CrAlN coating prepared without nitriding treatment on the substrate surface,the CrAlN coating prepared after surface nitriding on the substrate has higher hardness and adhesion,better friction and wear performance,and the high-temperature oxidation resistance is significantly enhanced.
作者
覃群
付泽钰
王天国
QIN Qun;FU Zeyu;WANG Tianguo(School of Materials Science and Engineering,Hubei University of Automotive Technology,Shiyan Hubei 442002,China)
出处
《润滑与密封》
CAS
CSCD
北大核心
2023年第10期114-119,共6页
Lubrication Engineering
基金
湖北省教育厅科学技术项目(Q20181802)
湖北省市场监督管理局科技计划项目(Hbscjg-kj201906)。
作者简介
覃群(1981-),女,硕士,副教授,研究方向为多弧离子镀硬质薄膜技术。E-mail:qinqun0806@163.com;通信作者:王天国(1981-),男,博士,教授,研究方向为材料表面新技术。E-mail:tgwang1978@sina.com。
