航空材料学报2012，Vol.32Issue(2)：75-81,7.DOI:10.3969/j.issn.1005-5053.2012.2.014
温度对溶剂热改性C/C复合材料显微结构和氧化性能的影响
Influences of Temperature on Microstructure and Oxidation Resistance of Carbon/Carbon Composites Modified by Solvothermal Process
摘要
Abstract
In order to improve the oxidation resistance property of C/C composites, the C/C composites were modified by a novel sol-gel/ solvothermal process. The suspension mixtures were prepared by mixing tributyl borate sol, ethanol, acetic acid and B2O3 powder. The as-modified C/C composites were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM) , energy dispersive spectroscope (EDS) and X-ray photoelectron spectroscopy (XPS) techniques. The influences of the solvothermal temperature on the phase, microstructure and anti-oxidation property of the as-modified composites were investigated. Results show that the surface of the C/C composites are covered by a coating consisted of molten B2 O3 and the internal microholes are occupied by B2 O3. With the increase of solvothermal temperature, and the density of the coatings also increases. The anti-oxidation property of the modified C/C matrix is effectively improved with the increase of solvothermal treatment temperatures from 353 K to 433 K. The mass loss of the modified C/C composites is only 4.09% after oxidation at 873 K in air for 16 h.关键词
C/C复合材料/氧化/基体改性/溶剂热法Key words
carbon/carbon composites/ oxidation/ matrix modification/ solvothermal process引用本文复制引用
朱佳,黄剑锋,曹丽云,王雅琴,吴建鹏,弭群,王妮娜..温度对溶剂热改性C/C复合材料显微结构和氧化性能的影响[J].航空材料学报,2012,32(2):75-81,7.基金项目
国家自然科学基金(151072108) （151072108）
陕西省教育厅科研计划项目资助(2010JK444) （2010JK444）
陕西科技大学研究生创新基金资助项目 （）
