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, Central South University, Changsha 410083, China) Abstract: The high-temperature oxidation-resistant MoSi2 coating on the Nb substrate was prepared by slurry firing. The structure, compositions and phase... of slurry firing to prepare the high-temperature MoSi2 coating on Nb is feasible. The SiO2 scale, which is formed on the surface of the coating by the self-oxidation of MoSi2, prevents the further......
oxidation rate than the substrate. Among them, after 100 h, the mass gains of the as-deposited specimens, the specimens adopted grinding and polishing are almost the same, while the oxidation rate... and Cr through formed Al2O3 film and succeeding oxidation causes difference between inner part and outer part of internal oxide tration. If the stress is high enough to reach the fracture limit......
Article ID: 1003-6326(2005)03-0600-06 Characterization of oxide films formed on magnesium alloys using bipolar pulse microarc oxidation in phosphate solutions WANG Li-shi(王立世... for AZ91D alloy at the coating/substrate interface. Key words: magnesium; AZ91D alloy; oxide film; microarc oxidation CLC number: TG146.2 ......
high-temperature oxidation process of the coating includes three stages:the fast stage,transition stage,and slow stage.The oxidation rate is constant in each stage,and in the fast stage and slow stages...Corrosion behaviour of NiCrFeAl-hBN seal coatings in oxidation environments at a high temperatureSu-Yuan Yang1,2,Dan Guo1,Xing-Wang Cheng1,2,Jian-Ming Liu3,Yue-Guang Yu31. School of Materials Science......
of the ageing soot samples. The initiation oxidation temperature of the ageing soot gradually increases with rising temperature, so that the TG curves gradually shift to high temperature region. The deviation... or not. In summary, the thermal ageing temperature has great influence on the earlier stage of oxidation reaction but little influence on the high temperature stage. The activation energy E calculated......
electrocatalytic activity towards methanol oxidation than Pt catalysts on rGO. The outstanding catalytic properties of Pt catalysts on EEG can be attributed to the fast electron transfer through EEG and high quality of Pt catalysts such as small grain size, high dispersibility and low oxidation ratio. In addition, SnO2 nanocrystals are controllably generated around Pt catalysts on EEG to raise the poison......
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J. Cent. South Univ. (2012) 19: 30-35 DOI: 10.1007/s11771-012-0968-7 Effects of oxidation treatment on properties of SiO2f/SiO2-BN composites LI Duan(李端), ZHANG Chang-rui(张长瑞), LI Bin(李斌), CAO... (SiO2f/SiO2-BN) were prepared firstly via the sol-gel method and then the urea route, and the effects of oxidation treatment on the component, structure, mechanical and dielectric properties......
Effects of Nb and Si on high temperature oxidation of TiAl JIANG Hui-ren(姜惠仁)1, WANG Zhong-lei(王中雷)1, MA Wen-shuai(马文帅)1, FENG Xiao-ran(冯晓然)1, DONG Zi-qiang(董自强)1, ZHANG Liang(张 亮)2, LIU Yong(刘... for improving the high temperature oxidation resistance of TiAl alloy than alloying with Nb or Si alone[10]. However, the mechanism of the effect of both Nb and Si is not clearly understood. In this work......
