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in the new alloy. Key words: titanium alloy; aging; microstructure; tensile properties; precipitation precipitation aged at 500 ℃ is finer than that aged at 570......
Periodical attenuation of Al(OH)3 particles from seed precipitation inseeded sodium aluminate solution WU Yu-sheng(吴玉胜)1, ZHANG Di(张 迪)1, LI Ming-chun(李明春)1, BI Shi-wen(毕诗文)2, YANG Yi-hong... the decrease of the specific surface area of seeds, which is the major reason causing explosive attenuation of Al(OH)3 particles in seed precipitation process. Key words: Bayer process; sodium......
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世界变了 创新不变张小红摘 要:<正>六十甲子,对一个人而言,是从懵懂稚嫩到两鬓斑白的大半生;对于中国而言,是天翻地覆旧貌换新颜的惊人巨变;对于一家企业而言,是从无到有,从小到大的发展积累,更是年富力强,迈步走向新辉煌的重要节点.今天,湖南有色金属研究院(以下简称"湖南有色院")走到了这个时间节点上.回顾过去,在没有先天技术优势,没有雄厚资本力量,也不研究热门"大"金属的背景下,湖南有色院独辟蹊径,把精力放在个性化,应用型的科研上,注重细分市场下的差异化竞争,重点围绕小金属开展特色科研,同时又重......
properties of Cu-Te alloys were studied via AG-10TA electronic universal machine, SB2230 digital electric bridge, SEM and EDS. The results show that recrystallization and precipitation occur simultaneously...; recrystallization; precipitation
products are all single-phase compounds as BaSO4, CuS and Y2O3, respectively.
Key words: recovery; waste YBa2Cu3O7-x/Ag composite; leaching; smelting; precipitation...; (8)
Then, the white precipitation was dried at 105 ℃ for 2 h and barium sulfate powder......Recovery of valuable elements from spent YBa2Cu3O7-x/Ag composite superconductor bulks
来源： 《中国有色金属学报(英文版)2010年增刊第1期》——李凤华 李英楠 张聪聪 樊占国
on ageing precipitation of Mg-Gd alloys TANG Yi-jin1, ZHANG Zhen-yan1, JIN Li1, DONG Jie1, DING Wen-jiang1, 2 (1. National Engineering Research Center of Light Alloy Net Forming, Shanghai Jiao Tong University, Shanghai 200240, China; 2. Key State Laboratory of Metal Matrix Composite, Shanghai Jiao Tong University, Shanghai 200240, China) Abstract: Mg-Gd alloys have an excellent ageing precipitation......
Al3Zr and Fe-rich particles, other second phases dissolve into the matrix completely while homogenized at 470 ℃. The number density of the Al3Zr precipitation particles is larger, and the distribution of the Al3Zr precipitation particles is more homogeneous comparing the two-stage homogenization of 400 ℃/12 h + 470 ℃/12 h with that of 470 ℃/12 h. Key words: Al-Zn-Mg-Cu aluminum alloy......
forming hydroxide where precipitation and complex are formed together. The effects of some factors on formation of precipitation and complex were investigated, and the corresponding precipitation rates...; precipitation rate; complex forming rate 1 Introduction In non ferrous metallurgy, hydroxide precipitate method is commonly used to recover valuable metals and purify the leaching solution usually [1-7......
