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(yè)大學(xué) 凝固技術(shù)國(guó)家重點(diǎn)實(shí)驗(yàn)室炭/炭復(fù)合材料工程技術(shù)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(guān)鍵詞:

炭/炭復(fù)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(xiàn)標(biāo)志碼:

A

摘要:

采用包埋法、超音速等離子噴涂結(jié)合化學(xué)氣相沉積工藝在C/C復(fù)合材料表面制備了SiC/ZrB2-SiC/SiC復(fù)合涂層。借助XRD和SEM等測(cè)試手段對(duì)所制備復(fù)合涂層的微觀結(jié)構(gòu)進(jìn)行表征，采用恒溫氧化實(shí)驗(yàn)及氧乙炔燒蝕實(shí)驗(yàn)考察涂層復(fù)合材料的高溫抗氧化和抗燒蝕性能。結(jié)果表明，所制備涂層復(fù)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(zhì)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(fù)合涂層在為C/C復(fù)合材料提供良好的抗燒蝕保護(hù)的同時(shí)，可對(duì)材料提供較寬溫度范圍的抗氧化保護(hù)。

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.