弥补愈合C/SiC-ZrC复合材料表面缺损的技术研究  

Technology for healing the surface defects of C/SiC-ZrC composite

作　　者：姜凯 綦育仕[3] 周长灵 刘瑞祥[2] 朱平[2] 杨芳红 康淋淞[2] Jiang Kai;Qi Yu-shi;Zhou Chang-ling;Liu Rui-xiang;Zhu Ping;Yang Fang-hong;Kang Lin-song(School of Materials Science and Engineering,Shandong University of Technology,Shandong Zibo 255000,China;Shandong Industrial Ceramic Research and Design Institute,Shandong Zibo 255000,China;Harbin Institute of Technology,Shandong Weihai,264209,China)

机构地区：[1]山东理工大学材料科学与工程学院,山东淄博255000 [2]山东工业陶瓷研究设计院有限公司,山东淄博255000 [3]哈尔滨工业大学(威海),山东威海264209

出　　处：《炭素技术》2023年第3期67-71,共5页Carbon Techniques

基　　金：国家重点研发计划(2021YFB3701400)。

摘　　要：热防护涂层可有效提高C/SiC-ZrC复合材料构件在极端热环境下的服役稳定性,然而材料表面一旦缺损,将不能使用,对具有表面缺损的C/SiC-ZrC复合材料进行有效修复,提高材料利用率及使用频次,是亟需解决的关键问题。本研究以短切炭纤维、硅溶胶、磷酸铝、超高温陶瓷混合粉为主要原料,利用喷涂工艺对C/SiC-ZrC复合材料表面缺损进行弥补愈合。研究发现,使用以磷酸铝为黏结剂,ZrB_(2)粉、SiC、Al_(2)O_(3)、SiO_(2)、硼硅玻璃粉等为主要成分的弥补料愈合效果优异。经过静态氧化和氧乙炔试验,复合材料接近零失重,保持了优异的抗氧化性能。The thermal protective coating can effectively improve the service stability of the C/SiC-ZrC composite components in extreme thermal environments.However once the material surface is defective,it will not be used.To effectively repair the composites with surface defects,and improve the material utilization rate,have become a key problem to be solved in the application field of C/SiC-Zrc matrix composites.In this study,short-cut carbon fiber,silica sol,aluminum phosphate and ultra-high temperature ceramic powder were used as the main raw materials,to heal the surface defects of C/SiC-ZrC composite by the spraying process.The study found that the use of aluminum phosphate as the binder,and ZrB_(2),powder,SiC,Al_(2)O_(3),SiO_(2),borosilicate glass powder as the main components of the compensatory material has excellent healing effect.After static oxidation and oxyacetylene tests,the composite material lost zero weight and maintained excellent antioxidant properties.

关 键 词：C/SiC-ZrC 表面缺损 抗氧化 

分 类 号：TB332[一般工业技术—材料科学与工程]