[1]楊茜,李賀軍,馮濤,等.SiC/MoSi2-Si-Cr-B/玻璃涂層炭/炭復合材料抗氧化行為研究[J].中國材料進展,2013,(6):375-379.[doi:10.7502/j.issn.1674-3962.2013.06.06]
YANG Xi,LI Hejun,FENG Tao,et al.Research on the Anti-oxidation Behavior of SiC/MoSi2-Si-Cr-B/Glass Compound Coating on Carbon/Carbon Composites[J].MATERIALS CHINA,2013,(6):375-379.[doi:10.7502/j.issn.1674-3962.2013.06.06]
點擊復制
SiC/MoSi2-Si-Cr-B/玻璃涂層炭/炭復合材料抗氧化行為研究(
)
中國材料進展[ISSN:1674-3962/CN:61-1473/TG]
- 卷:
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- 期數:
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2013年第6期
- 頁碼:
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375-379
- 欄目:
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特約研究論文
- 出版日期:
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2013-06-30
文章信息/Info
- Title:
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Research on the Anti-oxidation Behavior of SiC/MoSi2-Si-Cr-B/Glass Compound Coating on Carbon/Carbon Composites
- 作者:
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楊茜1; 2; 李賀軍1; 馮濤1; 張守陽1; 齊樂華1
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（1西北工業大學 超高溫復合材料重點實驗室 碳/碳復合材料工程技術研究中心，陜西 西安 710072）
（2河南科技大學材料學院，河南 洛陽 471023）
- Author(s):
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YANG Xi1; 2; LI Hejun1; FENG Tao1; ZHANG Shouyang1; QI Lehua1
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(1. C/C Composite Research Center, Key Laboratory of Thermal Structural Composites, Northwestern Polytechnical University, Xin 710072, China )
(2. School of Materials, Henan University of Science and Technology, Luoyang 471023, China)
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- 關鍵詞:
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碳/碳復合材料; 抗氧化涂層; 氧化失重
- DOI:
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10.7502/j.issn.1674-3962.2013.06.06
- 摘要:
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采用兩步包埋法及料漿涂刷-燒結法在二維碳布疊層碳/碳復合材料表面依次制備了SiC/MoSi2SiCrB包埋涂層及磷酸鹽玻璃外涂層，研究了其在950 ℃靜態空氣環境中自由狀態的抗熱震、防氧化性能及不同彎曲變形狀態下的防氧化性能，并借助X射線衍射分析儀及掃描電子顯微鏡對涂層試樣的組成成分及微觀組織形貌進行了分析。結果表明：950 ℃自由狀態下該涂層體系的氧化失重率為負值，抗熱震、防氧化效果良好；磷酸鹽玻璃層在950 ℃軟化熔融呈粘流態，可填補涂層內的裂紋和孔洞，阻止氧的入侵，有效提高了涂層整體的抗熱震及抗氧化性能；但彎曲變形狀態下，涂層試樣的氧化失重率隨形變量的增加而提高，形變會在一定程度上降低碳/碳復合材料抗氧化涂層的保護效果，加速材料的氧化失效。
- Abstract:
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The compound coating composed of SiC/MoSi2-Si-Cr-B layer and phosphate爂lass outer layer was prepared on the surface of 2D carbon cloth laminated carbon/carbon composites by two-step pack cementation and slurry-sintering techniques. At 950℃, the anti-oxidation performance of coated samples was evaluated in free-state and states?with?different?deformations, respectively. In addition, thermal shock test was also conducted from 950℃ to room temperature. The phase composition and microstructure of the as-prepared coating were characterized by XRD and SEM. The results show that the coating exhibits favorable thermal shock resistance and anti-oxidation properties, with a negative weight loss rate at 950℃. The phosphate?glass will be melted into a viscous-flow state at 950℃. It could seal the cracks and holes, resulting in the improvement of the thermal shock and oxidation resistance of the compound coating. However, under the bending state, the oxidation weight loss rate increases with the increase of deformation. The deformation will reduce the protective effect of anti-oxidation coating to some extent, accelerating the oxidation failure of carbon/carbon composites
備注/Memo
- 備注/Memo:
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基金項目：國家自然科學基金 (51072166, 51221001) 通訊作者：李賀軍，男，1957年生，教授，博士生導師，E-mail: lihejun@nwpu.edu.cn
作者簡介：楊茜（1982-），女，博士研究生，研究方向為抗氧化C/C復合材料的性能。
更新日期/Last Update:
2013-06-08