• 学报（中文） •

### 辉光渗钽层的制备与烧蚀性能

1. 1. 三江学院 机械与电气工程学院， 南京 210012； 2. 南京理工大学 材料科学与工程学院， 南京 210094
• 出版日期:2018-07-28 发布日期:2018-07-28
• 通讯作者: 万轶（1982-），女，江西省宜春市人，副教授，主要从事表面涂层制备及其摩擦磨损性能研究. 电话（Tel.）：025-52897012; E-mail: wan2721@163.com.
• 基金资助:
江苏省自然科学基金项目（16KJB460014，BK20151487），国家自然科学基金项目（51101087）

### Preparation of Glow Discharge Tantalum Coating and Its Ablation Properties

WAN Yi,XIONG Dangsheng,LI Jianliang

1. 1. Mechanical and Electrical Engineering School, Sanjiang University, Nanjing 210012, China; 2. School of Material Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
• Online:2018-07-28 Published:2018-07-28

Abstract: In order to study the effect of Ta layer on the corrosion resistance of the alloy surface, the diffused layer was prepared on the 34CrNi3Mo steel surface by double glow plasma infiltration. The surface morphology, phase structure, element distribution, hardness change and the adhesion between the infiltrated layer and the substrate were investigated. The ablation property and corrosion resistance of Ta layer were analyzed. The results show that Ta layer is mainly composed of BCC α-Ta composition with the deposition layer depth of about 10μm and diffusion layer depth of about 3μm. The surface layer hardness is about 500HV0.2 and the bonding strength is about 65N. Under the same working condition, the corrosion resistance of Ta layer is better than that of matrix, which can prevent the formation of the embrittlement between C/N and matrix. With the increasing numbers of pulse ablation, the ablation area increases but the ablation depth maintains shallow. In the case of the high power pulse ablation, the Ta layer can decrease the melting and vaporization process, and improve the ablation resistance of the matrix.