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Effect of Y2O3 on microstructure and oxidation of chromizing coating ZHOU Yue-bo(周月波), ZHANG Hai-jun(张海军), WANG Yong-dong(王永东) College of Materials Science and Engineering, Heilongjiang Institute... composite film using pack cementation method at 1 100 ℃ for 3 h. For comparison, chromizing was also performed under the same condition on an as- deposited Ni film without Y2O3 particles. Oxidation at 900......
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play an important role in recovery of metals from chalcopyrite and sphalerite. Key words: sulfur oxidation; Acidithiobacillus albertensis; Acidithiobacillus thiooxidans; isolation... was comparatively analyzed with the nucleic acid database of Genbank. The similarity analysis between the strain and the alignments of typical sulfur oxidation bacteria was done using Clustal X (1.8......
Trans. Nonferrous Met. Soc. China 25(2015) 4119-4125 Novel two-step process to improve efficiency of bio-oxidation of Axi high-sulfur refractory gold concentrates Xin-xing LIU1,2, Guo-hua WANG1,2... and the formation of jarosite could be diminished, thus the oxidation efficiency was improved. The oxidation levels of iron and sulfur were improved by 12.50% and 15.49%, and the gold recovery was increased......
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......
Article ID: 1003-6326(2005)02-0296-04 Effect of silicon on oxidation of Ni-15Al alloy WU Ying(吴 莹) , NIU Yan(牛 焱), WU Wei-tao() (State Key Laboratory for Corrosion and Protection, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China) Abstract: The oxidation of binary Ni-Al alloy containing 15%(mole fraction, the same below if not mentioned) Al......
Sulfur poisoning mechanism of three way catalytic converter and its grey relational analysisCAI Hao(蔡皓)1, LIU Ya-fei(刘亚飞)1, GONG Jin-ke(龚金科)1 , E Jia-qiang(鄂加强)1, GENG Yu-he(耿玉鹤)2, YU Li-ping(余立平)1.... This provides an important reference to the improvement of activity design of TWC, and may provide guidance for the condition design and optimization of TWC.Key words:sulfur poisoning; three-way catalytic......
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Microstructure of Ag-Sn-Cu-Bi-Ni alloy after oxidation WU Chun-ping(吴春萍)1, YI Dan-qing(易丹青)1, LI Jian(李荐)1, WANG Bin(王斌)1,XU Can-hui(许灿辉)1,LU Xiao-dong(卢小东)2 1.School of Materials Science... after internal oxidation were analyzed by X-ray diffractometry, optical microscopy and scanning electron microscopy, respectively. The results show that the surface color of samples after internal......