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莫来石抗氧化外涂层的制备及抗氧化性能 被引量:1

Preparation and Anti-oxidation Property of Mullite Protective Outer Coating
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摘要 以莫来石粉体(3Al2O3·2SiO2)为原料,采用水热电泳沉积法在C/C-SiC复合材料表面制备了莫来石外涂层。借助XRD和SEM等对涂层的晶相组成和显微结构进行了表征。研究了水热沉积电压对莫来石外涂层相组成、形貌及高温抗氧化性能的影响。结果表明:外涂层主要由莫来石晶相组成。当沉积电压控制在120~180 V范围内时,莫来石外涂层的致密程度、厚度及抗氧化性能随着沉积电压的升高而提高。当沉积电压达到210 V时,制备的外涂层出现疏松、裂纹等缺陷,抗氧化性能减弱。抗氧化测试表明与包埋法制备的SiC-C/C涂层试样相比,莫来石-SiC-C/C涂层试样的抗氧化性能明显提高。当沉积电压为180 V时,制备的复合涂层试样可在1500℃的空气气氛下有效保护C/C复合材料164 h,其失重仅为1.75%。 Mullite coating was deposited on C/C-SiC composites by a hydrothermal electrophoretic deposition process using mullite powder as source material.The phase composition and microstructure of the as-prepared coating was characterized by X-ray Diffraction(XRD) and Scanning Electron Microscopy(SEM).The influence of hydrothermal deposition voltage on phase composition,microstructure and high temperature oxidation resistance of the as-prepared coating was investigated.Results show that the outer layer is mainly composed of mullite phase.The thickness,density and anti-oxidation property of mullite coating are improved when the deposition voltage is increased from 120 V to 180 V.However,loose coating with some cracks will be formed at a higher voltage of 210 V and the corresponding oxidation resistance ability is weakened.The anti-oxidation property of the mullite-SiC-C/C sample is obviously improved in comparation with SiC-C/C substrate.The mullite coating prepared at 180 V exhibits excellent auti-oxidation property,which can effectively protect C/C composites from oxidation in air at 1 500 ℃ for 164 h with a weight loss of 1.75%.
出处 《无机化学学报》 SCIE CAS CSCD 北大核心 2011年第5期907-912,共6页 Chinese Journal of Inorganic Chemistry
基金 国家自然科学基金(No.51072108) 教育部博士点基金(No.20070708001) 新世纪优秀人才支持计划基金(NECT-06-0893) 陕西省教育厅科研计划项目(No.2010JK444) 陕西科技大学科研创新团队基金(TD09-05) 陕西科技大学研究生创新基金资助项目
关键词 C/C复合材料 莫来石外涂层 水热电泳沉积法 沉积电压 carbon/carbon composites mullite coating hydrothermal electrophoretic deposition process deposition voltage
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  • 1Buckley J D. Am. Ceram. Soc. Bull., 1988,67(2):364-368.
  • 2HUANG Jian-Feng(黄剑锋),LI He-Jun(李贺军),XIONG Xin-Bo(熊信柏),et al.Xinxing Tan Cailiao, 2005,20(4):373-379.
  • 3LI He-Jun(李贺军),XUE Hui(薛辉),FU Qian-Gang(付前刚),et al.Wuji Cailiao Xuebao, 2010,25(4):337-343.
  • 4LIU Miao(刘森),HUANG Jian-Feng(黄剑锋),WANG Bo(王博),et al.Wuji Cailiao Xuebao,2009,24(6): 1214-1218.
  • 5Huang J F. Li H J, Zeng X R, et al. Carbon, 2004,42(11): 2367-2370.
  • 6Huang J F, Zeng X R, Li H J, et al. Surf.Coat. Technol., 2005,190(2/3):255 -259.
  • 7Fu Q G, Li H J, Li K Z, et al. Carbon, 2006,44(9),1866-1869.
  • 8Moritz K, Herbig R, Damjanovic T, et al. Colloids Surf. A, 2009,350(1/2/3): 13-21.
  • 9Huang J F, Zeng X R, Li H J, et al. Carbon, 2005,43(7): 1580-1583.
  • 10Huang J F, Zeng X R, Li H J, et al. Mater. Lett., 2004,58 (21):2627-2630.

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