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Initial corrosion behavior of AZ91 magnesium alloy in simulating acid rain under wet-dry cyclic condition ZHOU Wan-qiu(周婉秋)1, 2, SHAN Da-yong(单大勇)2, HAN En-hou(韩恩厚)2, KE Wei(柯 伟) 2 1. College...; Abstract: Corrosion behavior of AZ91 magnesium alloy in simulating acid rain under wet-dry cyclic condition was investigated. The results......
distribution coefficient of the oxalic acid. In the case of phase ratio (O/A ) at 2.0, the extraction of the oxalic acid was more than 95% and its concentration in the extraction raffinate was lower than 0.004 0 mol/L after six-stage counter-current extraction. While the phase ratio (O/A) of the stripping was at 1.0, the recovery of oxalic acid attained more than 95% after ten-stage counter-current......
Preparation and properties of short natural fiber reinforced poly(lactic acid) composites YU Tao(于 涛)1,2, LI Yan(李 岩)1, REN Jie(任 杰)2 1. School of Aerospace Engineering and Applied Mechanics...; Abstract: The natural fiber/poly(lactic acid) (PLA) composites were prepared with ramie and jute short fiber as reinforcement and PLA as matrix. The mechanical and thermal properties......
脱合金化制备纳米多孔Ni,Ni O阳极材料及其电催化析氧性能周琦,任向荣兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室摘 要:采用快速凝固与脱合金化相结合的方法制备纳米多孔Ni,经热处理氧化获得纳米多孔NiO,运用XRD,SEM,TEM,BET等对纳米多孔Ni,NiO的物相,形貌结构,孔径分布进行表征,并通过循环伏安,稳态极化,电化学阻抗法研究了其作为电极的电催化析氧性能.结果表明,Ni15Al85和Ni5Al95脱合金化后均获得了纳米多孔Ni,Al含量的增加使得Ni的孔径尺寸与骨架强度减小,Ni5Al95形成的纳米多孔Ni在10 mA·cm-2电流密度下的析氧过电位比Ni15Al85形成的纳米多孔Ni低95 mV,但随着反应的进行,纳米多孔Ni表面的孔洞开始坍塌和脱落,导致其析氧稳定性降......
Applications of carbonic acid solution for developing conversion coatings on Mg alloy YU Bing-lung(余秉隆), LIN Jun-kai(林俊凱), UAN Jun-yen(汪俊延) Department of Materials Science and Engineering...-hydrotalcite (Mg6Al2(OH)16CO3·4H2O) layer and/or calcium carbonate (CaCO3) layer on Mg alloy in a carbonic acid solution system (aqueous HCO3-/CO32- or Ca2+/HCO3-) at 50 ?C were reviewed. Conversion......
at the ratio O:A=1, and up to 75% Та2О5 was extracted during one stage. Table 6 Distribution of components during extraction from fluoride-sulfuric acid solutions with OCL-1 As a result of ammonia...% from fluoride-sulfuric acid solutions and 80.8% from fluoride-nitric acid solutions for one stage at O:A=2. In order to obtain high-purity tantalum compounds a cleaning of fluoride-nitric acid......
J. Cent. South Univ. Technol. (2008) 15: 599-605 DOI: 10.1007/s11771-008-0112-x Synthesis and fluorescence properties of Tb(Ⅲ) complexes with pyridine-2,6-dicarboxylic acid derivatives TANG Rui...; Abstract: Two novel ligands named 4-styrylpyridine-2,6-dicarboxylic acid......
] TANG Ke-wen, ZHANG Guo-li, HUANG Ke-long, LI Yuan-jian, YI Jian-min. Resolution of α-cyclohexyl-mandelic acid enantiomers by two-phase (O/W) recognition chiral extraction [J]. Science in China Series B... acid by cyclodextrin-modified reversed phase high-performance liquid chromatography MAN Rui-lin(满瑞林)1, WANG Zhong-hui(王钟辉)1, TANG Ke-wen(唐课文)1, 2 (1. School of Chemistry and Chemical......
Diversity of microbial community at acid mine drainages from Dachang metals-rich mine, China ZHOU Zhi-jun(周智君)1, 2, YIN Hua-qun(尹华群)1, 2, LIU Yi(刘 毅)1, 2, XIE Ming(谢 明)1, 2, QIU Guan-zhou(邱冠周)1... South University, Changsha 410083, China Received 20 May 2009; accepted 23 July 2009 Abstract: Two acid mine drainage (AMD) samples TS and WK, which were from the Dachang metals-rich mine in Guangxi......
