Abstract: It can significantly improve the strength, hardness and welding performance of aluminum alloy by adding trace amounts of scandium in aluminum alloy. Al-Sc alloy is expected to be a new generation of lightweight structural materials for aerospace, aviation and naval industry. The melting point of scandium is 1541 ℃, which is much higher than that of the aluminum (660 ℃). Thus, scandium must be added to the aluminum alloy in the form of an intermediate alloy. The preparation method of Al-Sc master alloy is summarized, the characteristics of the direct mixing, metallothermic reduction and molten salt electrolytic methods are sorted out and analyzed. The thermodynamic of Al-Sc master alloy prepared by metallothermic reduction is analysed. The research progress in the molten salt electrolysis preparation of the Al-Sc master alloy is reviewed and the prospects of the related research works are discussed.
李亮星, 王涛胜, 黄茜琳, 黄金堤. 熔盐电解法制备铝钪中间合金研究进展[J]. 材料导报, 2018, 32(21): 3768-3773.
LI Liangxing, WANG Taosheng, HUANG Xilin, HUANG Jindi. Research Progress on the Preparation of Al-Sc Master Alloy by Molten Salt Electrolysis Method. Materials Reports, 2018, 32(21): 3768-3773.
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