C／C复合材料抗烧蚀HfC涂层的制备  

Preparation of Anti-ablation HfC Coating on C/C Composite Material

作　　者：侯根良[1] 苏勋家[1] 王延斌[2] 周晓波[1] 

机构地区：[1]第二炮兵工程学院501室,西安710025 [2]中国人民解放军96263部队,河南洛阳471500

出　　处：《航空材料学报》2009年第1期77-80,共4页Journal of Aeronautical Materials

摘　　要：采用液相先驱体转化法在C/C复合材料表面制备了抗烧蚀HfC涂层。用红外光谱分析先驱体溶液的结构,用XRD、SEM和EDS对涂层进行了分析和表征。结果表明:先驱体溶液中主要存在Hf-O-Hf结构和Hf-O-C链式结构,有利于HfC涂层的形成;经过1800℃热处理后多层膜被转变为HfC涂层,形成的涂层中主要为HfC和HfO2;单次涂覆不能有效的覆盖C/C复合材料,多次涂覆能够生成致密的HfC涂层;涂层的厚度约为几十微米,涂层界面不明显,在涂层和基体间有较大过渡层能够缓解界面应力和提高与基体间的结合强度,有效延长寿命。Anti-ablation HfC coating was prepared by liquid precursor conversion on the C/C composite material. The solution-derived precursor was studied by FT-IR. The HfC coating was characterized by XRD, SEM and EDS. The results showed the Hf-O-Hf and Hf- O-C bonds appeared in the solution-derived precursor. The coating was conversed into the HfC coating after heat treatment at 1800℃. The components of the coating were mostly HfC and HfO2. The C/C composite material was not covered with Single coating. The HfC coating was compact from multi-films. The thickness of the coating was about several tens micron. The interface was not obvious. The transition coating between body and coating can relax interface stress and improve integrate intensity.

关 键 词：HFC 涂层 C/C复合材料 

分 类 号：TB332[一般工业技术—材料科学与工程]