文章信息/Info

Title:

xidation and Ablation Properties of ZrB2�睸iC Based Coating for Carbon/Carbon Composites by Supersonic Plasma Spraying

作者:

任俊杰; 姚西媛; 李克智; 姚棟嘉

西北工業大學 凝固技術國家重點實驗室炭/炭復合材料工程技術研究中心

Author(s):

REN Junjie;  YAO Xiyuan;  LI Kezhi;  YAO Dongjia

C/C Composites Technology Research Center, State Key Laboratory of Solidification Processing, Northwestern Polytechnical University

關鍵詞:

炭/炭復合材料; 抗氧化; 抗燒蝕; ZrB2-SiC

Keywords:

carbon/carbon composites;  anti-oxidation;  anti-ablation;  ZrB2-SiC

DOI:

10.7502/j.issn.1674-3962.2017.01.10

文獻標志碼:

A

摘要:

采用包埋法、超音速等離子噴涂結合化學氣相沉積工藝在C/C復合材料表面制備了SiC/ZrB2-SiC/SiC復合涂層。借助XRD和SEM等測試手段對所制備復合涂層的微觀結構進行表征，采用恒溫氧化實驗及氧乙炔燒蝕實驗考察涂層復合材料的高溫抗氧化和抗燒蝕性能。結果表明，所制備涂層復合材料在900，1100，1500 ℃均具有較好的高溫抗氧化性能，涂層氧乙炔燒蝕60 s后，質量燒蝕率和線燒蝕率分別為-0.05 mg/s和0.56 μm/s。表明所制備的ZrB2-SiC基復合涂層在為C/C復合材料提供良好的抗燒蝕保護的同時，可對材料提供較寬溫度范圍的抗氧化保護。

Abstract:

The ZrB2-SiC based multilayer coating for carbon/carbon composites was prepared by pack cementation, supersonic plasma spraying and chemical vapor deposition. The microstructures of the as-prepared multi-layer coating were characterized by XRD and SEM. The anti-oxidation and ablation properties of coated composites were investigated by isothermal oxidation test and oxyacetylene flame test. The results show that the as-coated samples can provide good oxidation protection at 900，1100，1500 ℃. After oxyacetylene ablation for 60 s, the mass and linear ablation rates are-0.05 mg/s and 0.56 μm/s, respectively. The prepared ZrB2-SiC based coating can provide good ablation protection for C/C composites, and combined oxidation protection at a wide temperature range.