(中南大学 粉末冶金国家重点实验室，长沙 410083)
摘 要: 在金属反应熔渗法(RMI)制备的C/C-ZrC-Cu复合材料上采用大气等离子喷涂法(APS)得到厚度为1.3 mm的W涂层。运用扫描电镜-能谱(SEM-EDS)，X射线衍射(XRD)测试技术分析研究了等离子喷涂W与C/C-CuZr复合材料界面相组成。结果表明：C/C复合材料反应熔渗法采用Cu-48.9%Zr(摩尔分数)粉末制备出均匀的熔渗组织，这是因为Zr提高了Cu 在1300 ℃的C/C复合材料中的润湿性，在熔渗过程中生成了正交晶系相Cu10Zr7。W涂层与C/C-ZrC-Cu复合材料的结合类型以扩散结合为主，其界面区内主要是W和C通过包晶反应生成WC扩散层，反应扩散层厚度约为10 um。
关键字: C/C-ZrC-Cu复合材料；金属反应熔渗；大气等离子喷涂；W涂层
（State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China）
Abstract:W coating with thickness of 1.3 mm was successfully deposited by the atmosphere plasma spray (APS) technology on C/C-ZrC-Cu composite which was fabricated by reactive metal infiltration (RMI). Phase composition of interface between W coating and C/C-ZrC-Cu composite was investigated using a combination of X-ray diffraction (XRD) and scanning electron microscopy with energy-dispersive X-ray analysis (SEM-EDS). The results show that good performances of C/C-ZrC-Cu composite are obtained by reactive infiltration method with using powders of Cu-48.9% Zr, and Zr element can increase the wettability of Cu in C/C composite at 1300 ℃, the orthorhombic phase Cu10Zr7 is found in the composite. The type of bonding between W coating and C/C-ZrC-Cu composite is diffusion bonding on the main area of the interface. The diffusion bonding of WC layer is produced by peritectic reaction of phase W and C, and the thickness of reaction-diffusion layer is about 10 μm.
Key words: C/C-ZrC-Cu composite; RMI; APS; W coating
