Glass-SiB_(6)涂层在1573 K下的氧化行为研究  

Study on oxidation behavior of Glass-SiB_(6) coating at 1573 K

作　　者：曹丽云[1] 袁梦 黄剑锋[1] 沈学涛 Koji Kajiyoshi 严航 吉甜 CAO Li-yun;YUAN Meng;HUANG Jian-feng;SHEN Xue-tao;Koji Kajiyoshi;YAN Hang;JI Tian(School of Material Science and Engineering,Shaanxi University of Science&Technology,Xi′an 710021,China;Research Laboratory of Hydrothermal Chemistry,Kochi University,Kochi 780-8520,Japan)

机构地区：[1]陕西科技大学材料科学与工程学院,陕西西安710021 [2]日本高知大学水热化学研究实验室,日本高知780-8520

出　　处：《陕西科技大学学报》2023年第2期115-119,125,共6页Journal of Shaanxi University of Science & Technology

基　　金：国家自然科学基金项目(5217020265,52172049,52073166);陕西省国际科技合作重点计划项目(2020GHJD-04);陕西省科学技术资源共享平台项目(2020PT-022);陕西省农业厅农业科技创新驱动计划项目(NYKJ-2022-XA-08)。

摘　　要：SiB_(6)陶瓷作为Si-B二元合金稳定相,具有良好的高温性能.为了提高碳/碳(C/C)复合材料在1 573 K下的抗氧化性,采用脉冲电弧放电沉积法(PADD)在SiC-C/C上制备了SiB_(6)涂层,并在此基础上用烧制法、热浸渍法(HD)制备了玻璃密封层.结果表明SiB_(6)在1 573 K空气中氧化会产生流体硼硅酸盐玻璃愈合涂层产生的缺陷,玻璃密封层的存在使SiB_(6)发挥了更好的作用.在烧制法制备的玻璃层的保护下,氧化105 h后试样质量增加0.06%,表现出良好的抗氧化性.熔融玻璃层和B_(2)O_(3)蒸发是涂层失效的主要原因.As the stable phase of Si-B binary alloy,SiB_(6) ceramics have good high-temperature performance.To improve the oxidation resistance of carbon/carbon(C/C)composites at 1573 K,SiB_(6) was prepared on SiC-C/C by pulse arc discharge deposition method(PADD),and the glass sealing layer was prepared by firing and hot dipping(HD)method on this basis.The results show that oxidation of SiB_(6) coatings in 1573 K air will produce defects caused by the healing of flowing borosilicate glass.The existence of a glass sealing layer makes SiB_(6) coating play a better role.Under the protection of the glass layer prepared by the firing method,the mass gain of the sample after oxidation for 105 h is 0.06%,showing good oxidation resistance.The melting glass layer and B_(2)O_(3) evaporation are the main reasons for the failure of the coating.

关 键 词：SiB_(6)涂层 脉冲电弧放电沉积法 抗氧化性能 

分 类 号：TB332[一般工业技术—材料科学与工程]