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perovskite structure were prepared, and the series of La0.9RE0.1MnO3 catalysts were studied experimentally. The so prepared ultra-fine particles exhibites high catalytic activity for CH4 total oxidation... stable, and La0.9Y0.1MnO3 or La0.9Gd0.1MnO3 (varies with calcination temperature) exhibits the highest catalytic activity for total oxidation of methane. The specific surface area of La0.9Y0.1MnO3......
Oxidation of Al2O3-30%TiCN-0.2%Y2O3 Composite Yan Changhao1,Li Xikun2,Xiu Zhimeng3,SUN Xudong3,QIU Guanming1,Dai Shaojun1 (1.Nanjing University of Technoloy, Nanjing 210009, China;2.Shenyang... 130022, China) Abstract:The oxidation behavior of Al2O3-30%TiCN-0.2%Y2O3 composite and its effect on high temperature bending strength was studied. The result indicates that the mass gain during......
Electrochemical performance of microarc oxidation films formed on AZ91D alloy in two group electrolytes WANG Li-shi(王立世), CAI Qi-zhou(蔡启舟) , WEI Bo-kang(魏伯康), LIU Quan-xin(刘全心) (State Key Laboratory of Die and Mould Technology, Huazhong University of Science and Technology, Wuhan 430074, China) Abstract: The phase composition and electrochemical performances of microarc oxidation(MAO) films......
Effect of Cr on high temperature oxidation of TiAl DONG Zi-qiang(董自强), JIANG Hui-ren(姜惠仁), FENG Xiao-ran(冯晓然), WANG Zhong-lei(王中雷) School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China Received 28 July 2006; accepted 15 September 2006 Abstract: The oxidation behavior of TiAl-Cr(mole fraction of Cr?0-20%) was investigated......
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in a steel alloy factory were analyzed for chromium contamination level and its effect on soil microorganisms and enzyme activities. The results show that the average concentrations of total Cr in the soil... for the chromium pollution level in the area of the steel alloy factory. Key words: chromium contamination; soil microorganism; enzymes activities; total Cr; water soluble Cr(Ⅵ)
Effect of magnesium in aluminum alloys on characteristics of microarc oxidation coatings LIU Yao-hui(刘耀辉), LI Song(李 颂), YU Si-rong(于思荣), ZHU Xian-yong(朱先勇), XU Bai-ming(徐佰明) Key Laboratory...: Microarc oxidation(MAO) coatings were prepared on the surface of aluminum alloys with different contents of magnesium. The morphologies and surface roughness of the coatings were characterized by Confocal......
of each thermal cycle is 2, 3, 5, 10, 40 min. In these oxidation experiments, each sample was held at oxidation temperature for a total of 60 min. After oxidation, the macro shape of each sample... Oxidation mechanisms of C-SiC-TaC-C composites prepared by chemical vapor infiltration CHEN Zhao-ke(陈招科), XIONG Xiang(熊翔), HUANG Bai-yun(黄伯云), LI Guo-dong(李国栋), XIAO Peng(肖鹏), WANG Ya-lei(王雅雷......
Effect of Y and Y2O3 on oxidation of AZ91D Mg alloys between 400 ℃ and 500 ℃ Sang-Hwan BAK, Dong-Bok LEE School of Advanced Materials Science and Engineering, Sungkyunkwan University...; Abstract: AZ91D, AZ91D+1%Y, and AZ91D+3%Y2O3 (mass fraction) alloys were cast, and oxidized between 400 and 500 ℃ in air. The oxidation resistance......
battery by anodic oxidation HOU Bing-xue(侯冰雪)1, 2, CUI Xu-mei(崔旭梅)2, ZHANG Qi(张祺)3, CHEN Yun-gui(陈云贵)1 1. Department of Advanced Energy Materials, College of Materials Science and Engineering,Sichuan... Central South University Press and Springer-Verlag GmbH Germany, part of Springer Nature 2019 Abstract: Anodic oxidation with different electrolyte was employed to improve the electrochemical......