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A strength reduction method based on double reduction parameters and its applicationYUAN Wei(袁维), BAI Bing(白冰), LI Xiao-chun(李小春), WANG Hai-bin(汪海滨) (State Key Laboratory of Geomechanics and Geotechnical Engineering (Institute of Rock and Soil Mechanics, Chinese Academy of Sciences), Wuhan 430071, China)Abstract:In the traditional strength reduction method, the cohesion and the friction angle......
the traditional toxic SnPb solder in the field of electronic packaging. Chemical reduction method was used to fabricate the Sn3.0Ag0.5Cu (SAC) (mass fraction, %) alloy nanoparticles. Sodium borohydride... concentration. Finally, theoretical analysis was employed to illustrate the influence of reactant concentration on the particle size. Key words: chemical reduction method; lead-free solder; SnAgCu alloy......
Co-B合金粉体的制备和电化学行为吕东生1,李伟善1,谭春林1,曾荣华1(1.广东省广州市华南师范大学化学与环境学院)摘 要:通过NaBH4还原CoSO4溶液制备了Co0.68B0.32,Co0.55B0.45和Co0.50B0.50一系列超细非晶态Co-B合金粉体.电化学测试表明,在300 mA/g的高电流密度下,3种合金电极的首次放电容量分别高达510.6,666.4和667.2 mA·h/g,经60次循环后,放电容量仍分别有331.6,379.5和390.5 mA·h/g.3种合金电极还表现出良好的高率放......
Article ID: 1003-6326(2005)03-0594-06 Reduction of TiO2 with hydrogen cold plasma in DC pulsed glow discharge ZHANG Yu-wen(张玉文), DING Wei-zhong(丁伟中), LU Xiong-gang(鲁雄刚), GUO Shu-qiang(郭曙强), XU Kuang-di(徐匡迪) (Shanghai Key Laboratory of Modern Metallurgy and Material Processing, Shanghai University, Shanghai 200072, China) Abstract: The reduction of TiO2 to Ti2O3 with hydrogen......
Effect of Na2B4O7 on iron reduction in magnesium alloys AZ31 and AZ91 WU Guo-hua(吴国华), GAO Hong-tao(高洪涛), WANG Wei(王玮), DING Wen-jiang(丁文江) School of Materials Science and Engineering, Shanghai...; Abstract: Effect of Na2B4O7, a new iron reduction agent, on iron reduction in magnesium alloys......
reduction (MDR) limit. In addition, this upper bound of approximately 80% is insensitive to the chemical detail, concentration, molecular mass of the polymer over a broad range. It is also well known...J. Cent. South Univ. Technol. (2008) 15(s1): 275-279 DOI: 10.1007/s11771-008-362-7 Influence of rheological parameters in all drag reduction regimes of turbulent channel flow with polymer......
in a composite pellet made of metallurgical dust.The model considered heat transfer,mass transfer,and chemical reactions including iron oxide reductions,zinc oxide reduction and carbon gasifcation...Mathematical simulation of direct reduction process in zinc-bearing pelletsYing Liu1,Fu-yong Su1,Zhi Wen1,Zhi Li2,Hai-quan Yong2,Xiao-hong Feng21. School of Mechanical Engineering,University......
Preparation of ferromagnetic binary alloy fine fibers by organic gel-thermal reduction process SHEN Xiang-qian(沈湘黔), CAO Kai(曹 凯), ZHOU Jian-xin(周建新) School of Materials Science and Engineering... reduction process from the raw materials of critic acid and metal salts. These alloy fibers synthesized were featured with a diameter of about 1 μm and a length as long as 1 m. The structure, thermal......
. Preparation of micron size copper powder with chemical reduction method [J]. Materials Letters, 2006, 60(20): 2438-2442. [4] WU S H, CHEN D H. Synthesis of high-concentration Cu nanoparticles... Trans. Nonferrous Met. Soc. China 22(2012) 117-123 Preparation of Cu nanoparticles with NaBH4 by aqueous reduction method LIU Qing-ming1, 2, ZHOU De-bi1, 2, Yuya YAMAMOTO2, Ryoichi ICHINO2, Masazumi......
of ferromagnetic metal fine fibers by organic gel-thermal reduction process CAO Kai(曹 凯), SHEN Xiang-qian(沈湘黔), JING Mao-xiang(景茂祥), ZHOU Jian-xin(周建新) (School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, China) Abstract: The organic gel-thermal reduction process was used for the preparation of ferromagnetic metal Ni, Co and Fe fine fibers from the raw materials......
