等离子-物理气相沉积硅/莫来石/硅酸镱环境障涂层的高温防护和耐热冲击性能研究  

Research on High Temperature Protection Property and Thermal Impact Resistance of A PS–PVD Si/Mu/YbMS Environmental Barrier Coating

作　　者：王博[1,2] 刘洋 彭新[4] 袁福河 程玉贤 WANG Bo;LIU Yang;PENG Xin;YUAN Fuhe;CHENG Yuxian(Beihang University,Beijing 100191,China;AECC Shenyang Liming Aero-Engine Co.,Ltd.,Shenyang 110043,China;Luxun Academy of Fine Arts,Shenyang 110004,China;Shenyang Area 2nd Military Representative Room of Air Force Equipment Department,Shenyang 110042,China)

机构地区：[1]北京航空航天大学,北京100191 [2]中国航发沈阳黎明航空发动机有限责任公司,沈阳110043 [3]鲁迅美术学院,沈阳110004 [4]空装驻沈阳地区第二军事代表室,沈阳110042

出　　处：《航空制造技术》2022年第3期64-70,共7页Aeronautical Manufacturing Technology

基　　金：国家自然科学基金(92060301)。

摘　　要：通过SiCf/SiC复合材料表面等离子喷涂(APS)硅黏结层和莫来石中间层,等离子–物理气相沉积(PS–PVD)制备硅酸镱面层,喷涂的整个环境障涂层体系组织致密,PS–PVD工艺制备的硅酸镱为层状结构,孔隙率<1%。研究了SiCf/SiC复合材料环境障涂层的抗静态氧化、循环氧化、水汽腐蚀和热冲击性能,发现复合材料表面的环境障涂层体系在1200℃、1300℃下静态氧化和循环氧化100h后皆保持表面完好,无剥落现象,具有较好的抗氧化性能。涂层在1300℃燃气热冲击试验寿命超过100次循环,且在1200℃、15%H_(2)O水汽环境中静态氧化100h以内的耐腐蚀性能良好。An environmental barrier coating system was applied on SiCf/SiC composite specimens with the silicon bond coat and mullite intermediate coat sprayed using APS processes and the ytterbium silicate topcoat sprayed using a PS–PVD process.The sprayed environmental barrier coating system is dense in microstructure and the PS–PVD ytterbium silicate topcoat possesses lamellar structure with a porosity less than 1%.The static oxidation,cyclic oxidation,water vapour corrosion and thermal impact resistances of the environmental barrier coating system were investigated.It was demonstrated that the environmental barrier coating sprayed on the SiCf/SiC composite specimens had a desirable oxidation resistance as it kept intact with no obvious evidence of spallation observed after 100h static oxidation,100h cyclic oxidation test at 1200℃and 1300℃.Moreover,the coating had a thermal impact resistance life more than 100 cycles as heated to a high temperature of 1300℃by a hot gas stream and it had a preferable corrosion resistance at 1200℃in an environment containing 15% H_(2)O water vapour.

关 键 词：等离子–物理气相沉积 环境障涂层(EBC) 氧化 水汽腐蚀 热冲击 

分 类 号：TB306[一般工业技术—材料科学与工程]