新型多梯度类金刚石涂层生长及表征  

Growth and characterization of a novel multi gradient diamond likecarbon coating

作　　者：喻岚 唐华 于爽爽 李多生[2] YU Lan;TANG Hua;YU Shangshang;LI Duosheng(AECC Guizhou Honglin Aero-engine Control Technology Corporation Ltd.,Guiyang 550009,China;School of Materials Science and Engineering,Nanchang Hangkong University,Nanchang 330063,China)

机构地区：[1]中国航发贵州红林航空动力控制科技有限公司,贵阳550009 [2]南昌航空大学材料科学与工程学院,南昌330063

出　　处：《功能材料》2024年第5期5072-5078,共7页Journal of Functional Materials

基　　金：国家自然科学基金项目(51562027);江西省重点研发计划重点项目(20201BBE51001);江苏省重点研发计划(产业前瞻与关键核心技术)(BE2021055)。

摘　　要：在Cr12MoV表面沉积Cr/Cr-WC/WC-H/ta-C:H多梯度涂层。通过扫描电子显微镜、拉曼光谱仪、X射线光电子能谱对多梯度涂层微结构进行表征,运用纳米压痕仪、纳米划痕测试仪及球盘式摩擦计对其力学性能进行了研究。结果表明,与未沉积涂层的Cr12MoV相比,Cr/Cr-WC/WC-H/ta-C:H多梯度涂层的摩擦系数约为其10%,最低可达0.019。Cr/Cr-WC/WC-H/ta-C:H多梯度类金刚石涂层的硬度最高达24.1 GPa,附着力为62 N。设计新型多层梯度涂层引入的高润滑性非晶碳和硬支撑WC层,抑制了裂纹扩展,显著地提高了Cr12MoV的力学性能。此外,电化学腐蚀试验表明,Cr/Cr-WC/WC-H/ta-C:H多梯度涂层在3.5%NaCl溶液中有着良好的耐腐蚀性能。In this paper,Cr/Cr-WC/WC-H/ta-C:H multi-gradient coating was deposited on the Cr12MoV substrate.The microstructure of the multi-gradient diamond like carbon(DLC)coating was characterized by scanning electron microscopy(SEM),Raman spectrometry,and X-ray photoelectron spectroscopy(XPS).The mechanical properties of coating were investigated by using nanoindentation tester,nano-scratch tester,and ball-and-disc tribometer.The results show that compared with the Cr12MoV without deposited coating,the friction coefficient of Cr/Cr WC/WC-H/ta-C:H multi gradient coating is about 10%,as low as 0.019.The hardness of Cr/Cr WC/WC-H/ta-C:H(DLC)coating can reach up to 24.1 GPa,with a high adhesion of 62 N.A new multi-layer gradient coating was designed,which introduces a high lubricity amorphous carbon and hard supported WC layer.It suppresses crack propagation,and significantly improves the mechanical properties of Cr12MoV.In addition,electrochemical corrosion tests showed that the Cr/Cr-WC/WC-H/ta-C:H multi-gradient coatings had superior corrosion resistance in 3.5%NaCl solution.

关 键 词：类金刚石涂层 ta-C:H 新型多梯度 Cr12MoV钢 

分 类 号：TB332[一般工业技术—材料科学与工程]