炭／炭硬化保温材料的表面涂层及抗氧化性能研究  

PROTECTIVE COATINGS FOR LOW DENSITY C/C COMPOSITE AND ITS ANTI-OXIDATION PERFORMANCES

作　　者：邵海成[1,2] 肖志超[2] 彭志刚[2] 侯卫权[2] 苏君明[2] 刘桂武[1] 乔冠军[1] 

机构地区：[1]西安交通大学材料学院,西安710049 [2]西安航天复合材料研究所西安超码科技有限公司,西安710025

出　　处：《炭素》2012年第4期20-25,共6页Carbon

摘　　要：研究了炭／炭硬化保温材料的两种表面涂层方法。对封孔后的低密度材料进行SEM分析，对硅粉涂层与炭界面进行EDS和XRD分析，然后，（360±10）℃气中进行氧化烧蚀试验。结果表明：封孔石墨颗粒大小对低密度炭／炭保温材料的封孔效果有很大的关系，TC-200涂层效果致密效果好；硅粉涂层与炭本体界面在1600℃后形成碳化硅致密层，对低密度材料起到很好的防护作用。Two kinds of surface coatings were processed on the C/C hardens insulate materials, respectively, in this paper. The microstructures characterization of the coating was conducted by scanning electron microscopy （SEM）. And the interface of silicon and carbon was analyzed by energy dispersive spectroscopy （EDS） and X-ray diffraction （XRD）. Anti-oxidation tests were performed on the coated samples at （360± 10）℃. The results show that the particle size of graphite powder plays an important role in the microstructures of the surface coating. The surface sealing process using the silicon powder can also obtain a relatively good effect due to formation of SiC on the surface of the C/C composite by 1 600℃. The SiC-coated sample presents the best oxidation resistances.

关 键 词：炭 炭硬化保温毡 表面涂层 抗氧化性能 

分 类 号：TQ165[化学工程—高温制品工业]