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The Latest Development of Mg-Al Series Heat-resistant Magnesium Alloy

CHEN Jun;LI Quan-an;LI Xiao-feng;ZHANG Xing-yuan;LI Ke-jie
Rare Metals and Cemented Carbides | Vol., Issue 1, 2009 | pp. 50-55
The latest development of Mg-Al series magnesium alloy strengthened by different alloying elements is reviewed. The effect of alloying elements such as RE,Ca,Si and Sr on the mechanical property of Mg-Al series magnesium alloy is emphatically introduced. The mechanism of strengthening the heat resistance of Mg-Al series magnesium alloy is also analyzed. Furthermore, the development trend of Mg-Al series magnesium alloy is pointed out.
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Adsorption Property of P507 Levextrel Resin for Indium(Ⅲ) from Hydrochloric Acid System

LIU Jun-shen;YUAN Yan-xu
Rare Metals and Cemented Carbides | Vol., Issue 4, 2008 | pp. 1-4
A Levextrel resin containing 2-ethylhexyl phosphonic acid mono-（2-ethylhexyl） ester （P507） was prepared by suspension polymerization. The analytic results show that the resin contains 0. 944 mmol/g extractant. The behavior of P507 for In（ Ⅲ ） extraction from HCl systems was studied. The results show that P507 can effectively adsorb In（Ⅲ） at pill. 0-1.5. The adsorption capacity increases with the temperature increase,the adsorption is an endothermic reaction,and the isothermal adsorption curves conform to the Langmuir and Freundlich models.
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Property of the Agglomerates for Al-Si Alloy Preparation by Electrothermal Process(Ⅰ)——Porosity

YANG Dong;FU Da-xue;WANG Yao-wu;FENG Nai-xiang
Rare Metals and Cemented Carbides | Vol., Issue 4, 2008 | pp. 5-9
Description is made of a novel method of measuring porosity of the agglomerates for Al-Si alloy preparation by electrothermal process. The influence of pressure, sintering conditions and material particle size on the agglomerate porosity was also investigated. The results show that the agglomerate porosity decreases with higher pressure and smaller particle size, but increases with higher sintering temperature and longer sintering time. Sintering conditions have greater influence on the agglomerate porosity than the pressure and the material particle size.
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Study on Fe Removal by MnCl_2 from Al-Si Alloy

WANG Yao-wu;FENG Nai-xiang;YOU Jing;PENG Jian-ping;ZHANG Fu-shun;WANG Zi-qian;WU Xiao-lei
Rare Metals and Cemented Carbides | Vol., Issue 4, 2008 | pp. 10-13
The crude Al-Si alloy produced by carbon electrothermal reduction should be free of iron impurity after dilution refining. and slow manganese d However,iron removal by directly adding manganese will result in manganese loss illusion. Study is made on the feasibility of Fe removal from crude Al-Si alloy by MnCl2 instead of single Mn. The results show that MnCl2 can react with Al to produce Mn. Therefore, MnCl2 can substitute Mn to remove iron impurity from Al-Si alloy.
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