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
喻岚 1唐华 1于爽爽 2李多生2
作者信息
- 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
- 折叠
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.
Abstract
In this paper,Cr/Cr-WC/WC-H/ta-C:H multi-gradient coating was deposited on the Cr12MoV sub-strate.The microstructure of the multi-gradient diamond like carbon(DLC)coating was characterized by scan-ning electron microscopy(SEM),Raman spectrometry,and X-ray photoelectron spectroscopy(XPS).The me-chanical 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 suppor-ted 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-gradi-ent 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Key words
diamond like carbon coating/Ta-C:H/new multi-gradient/Cr12MoV steel引用本文复制引用
基金项目
国家自然科学基金(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)
出版年
2024
NETL
NSTL
万方数据