CAJ | 학술논문

研究了铝液还原熔盐中ZrO2制备铝锆母合金的新方法，考察了还原时间对合金中锆浓度的影响.结果表明，铝液还原熔盐中ZrO2法制备出的铝锆母合金不含有氧化锆和氧化铝夹杂，可制备出更纯净的铝锆母合金.扫描电镜和电子能谱分析结果表明，合金中的Zr主要以Al3Zr晶须形式存在.铝锆母合金中锆浓度随还原时间的延长而明显增加，当还原4 h后合金中锆质量百分含量为1.5%，基本达到上限值.
연구료려액환원용염중ZrO2제비려고모합금적신방법，고찰료환원시간대합금중고농도적영향.결과표명，려액환원용염중ZrO2법제비출적려고모합금불함유양화고화양화려협잡，가제비출경순정적려고모합금.소묘전경화전자능보분석결과표명，합금중적Zr주요이Al3Zr정수형식존재.려고모합금중고농도수환원시간적연장이명현증가，당환원4 h후합금중고질량백분함량위1.5%，기본체도상한치.
Al-Zr master alloy is prepared by the new method of Al reducing ZrO 2 dissolved in molten salt and the effect of reduction time on Zr content in the Al-Zr master alloys is studied. The results showed that purer alloy can be gained because the Al-Zr master alloy prepared by the new method of Al reducing ZrO 2 dissolved in molten salt does not contain zirconia and alumina inclusion. The alloy samples analyzed by SEM and EEP show that the Zr of Al-Zr master alloy exists mainly in form of Al 3Zr crystal whisker. The Zr content of Al-Zr master alloy increases obviously with the increasing of reduction time and reaches upper limit of 1.5 wt% after 4 hours’ reduction.