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新型热障涂层陶瓷隔热层材料薛召露1,郭洪波1,2,宫声凯1,2,徐惠彬1,21. 北京航空航天大学材料科学与工程学院2. 高温结构材料与涂层技术工业和信息化部重点实验室摘 要:热障涂层(thermal barrier coatings,TBCs)是先进燃气涡轮发动机核心热端部件高压涡轮叶片的关键技术,已经在航空发动机和地面燃气轮机上获得成功应用的热障涂层陶瓷隔热层材料为氧化钇部分稳定氧化锆(YSZ).由于受高温稳定性,隔热性能等的局限,YSZ已不能满足下一代航空发动机的发展要求.本文介绍了近年来国内外在多元氧化物掺杂氧化锆,A2B2O7型烧绿石或萤石化合物,磁铅石型六铝酸盐化合物,石榴石型化合物,钙钛矿结构化合物和其他新型氧化物陶瓷等先进超高温热障涂层陶瓷材料方面的研究进展,并展望了今后超高温热障涂层......
coat oxidation kinetic(TGO thickening) can substantially restrict the life time of thermal barrier coating systems(TBCs). So, nanostructured and conventional Y2O3 stabilized ZrO2 coatings were evaluated......
specific requirements. LaAlO3 was prepared to study and report its properties in the context of its potential in thermal barrier coatings (TBCs) technology. A citric acid method was used for synthesis... the mechanical and fracture behaviours of different TBCs developed involving LaAlO3 as well as input for numerical simulations. Key words: perovskite; lanthanum aluminate; thermal barrier coating (TBC......
thermal exposure in air plays an important role in the spallation of the ceramic layer from the bond coat. High temperature oxidation resistance of four types of atmospheric plasma sprayed TBCs... (TBCs) at high temperatures [1,2]. A normal TBC system consists of a ceramic top coat and a metallic bond coat (MCrAlY) onto the nickel-based superalloy as a substrate. MCrAlY (M=Ni, Co or mixture......
that these ceramic materials had the poten-tial to be used as candidate materials for TBCs. Key words:pyrochlore oxides; thermal conductivity; thermal barrier coatings; doping; rare earths; [全文内容正在添加中] ......
coats in thermal barrier coatings(TBCs). Oxidation behaviour of the β-NiAlHf coatings prepared by electron beam physical vapour deposition(EB-PVD) was investigated at 1100 ℃ for short time and 100 h......
Thermophysical properties of solution precursor plasma-sprayed La2Ce2O7 thermal barrier coatingsBei-Bei Feng,Yi Wang,Qiang Jia,Wei Huang,Hong-Li Suo,Wen Ma摘 要:La2Ce2O7(LCO)is a promising candidate for thermal barrier coatings(TBCs)due to that it provides better thermal insuation than yttria-stabilized zirconia(YSZ)does.In this work,a TBC LCO......
Crystallization behavior of plasma-sprayed lanthanide magnesium hexaaluminate coatingsLiang-liang Huang,Hui-min Meng,Jing TangCorrosion and Protection Center, University of Science and Technology Beijing摘 要:La Mg Al11O19 thermal barrier coatings(TBCs) were prepared by atmospheric plasma spraying. The crystallization behavior of the coatings......
的热膨胀系数约为5.6×10-6 K-1,低于热障涂层(TBCs)对表面陶瓷层材料的要求,但与环境障涂层(EBCs)硅基陶瓷基体的热膨胀系数((3.4~5.5)×10-6K-1)接近.关键词:高熵陶瓷;热障涂层;热导率;热膨胀系数;......
and Engineering,Tianjin University摘 要:Yb3Al5O12 has potential applications as thermal barrier coatings(TBCs) because it shows low thermal conductivity......