C/C复合材料航空刹车副表面防氧化涂料的研制
来源期刊：中国有色金属学报2000年第6期
论文作者：刘槟 易茂中 熊翔 蒋建纯 黄伯云
文章页码：864 - 867
关键词：C/C复合材料； 航空刹车副；防氧化涂料； 防氧化性能
Key words：carbon-carbon composites； aircraft brake pairs; oxidation resistant coatings； oxidation-proof properties
摘 要：以磷酸， 磷酸盐， SiC， SiO2，B4C和含硼化合物等为原料研制了以硅、硼化合物为主的多组分陶瓷混合物涂料。采用该涂料以刷涂的方式制备的C/C复合材料复合涂层具有显著的防氧化效果。研究表明，涂覆有涂层的C/C复合材料试样在900 ℃氧化10 h后，其氧化损失率为10.37%；试样在空气中900 ℃,3 min室温, 2 min急冷急热，如此在10 h内循环100次后，氧化损失率为8.41%。涂层与基体结合牢固，一直保持完好，没有发生剥落，具有耐高温、热稳定性好、耐腐蚀的优点，没有烧损和大量蒸发等现象，说明该涂料适合作C/C复合材料航空刹车副表面防氧化涂层。
Abstract: Multilayer coatings with oxidation resistance made of ceramic mixtures of phosphate, SiC,SiO2, B4C and borate on carboncarbon composites surface were proved effectivein oxidation resistance. Fabrication techniques, microstructure and oxidation resistance of coated carboncarbon composites were studied. Results show that carboncarbon composites with multilayer coatings lose only 10.37% of mass after being oxidized in air at 1 173 K for 10 h. Oxidation mass loss rateis 8.41% after being thermally circulated in air from 1 173 K, 3 min to room temperature, 2 min and from roomtemperature, 2 min to 1 173 K, 3 min in 10 hfor 100 times, which indicates that the multi-layer coatings can provide excellent oxidation resistance and thermal shock resistance and be applied to the oxidation-proof of carbon-carbon composites aircraft brake pairs.
