Al-Si共晶合金微粉熔化的研究  

Research into fine powders of Al-Si eutectic alloy melting

作　　者：刘福平[1] 杨凯珍[1] 蔡沛沛[1] 黄云帅[1] 

机构地区：[1]广州有色金属研究院,广东广州510650

出　　处：《材料研究与应用》2007年第3期207-209,共3页Materials Research and Application

摘　　要：Al-Si共晶合金微粉宜采用坩埚式中频感应加热炉熔化.Al-Si共晶合金熔化时的熔化熵为16.05 J/mol.K,其体积变化与组元间合金元素Al-Si的体积变化不具有加和性.微粉压成块、炉內留有起熔体以及快速升温均有助于提高微粉熔化后的合金回收率.Al-Si共晶合金微粉在大气气氛下经熔化后凝固的合金,其氧含量升高、Si含量降低.Study on melting process of fine powders of Al-Si eutectic alloy has done. The results show that, for melting of fine powders of Al-Si eutectic alloy, it fits for using a crucible medium frequency induction furnace. The entropy of fusion for Al-Si eutectic alloy is 16.05J/mol·K. The body change of melting Al-Si eutectic alloy is not plus with the element body changes of alloy components. Pressing fine powders into cakes and leaving a certain amount of melting Al-Si eutectic alloy in the heating furnace before adding fine powders ,and quickly heating for melting fine powders can improve effectively the recovery rate of Al-Si eutectic alloy. It is evident that Al-Si eutectic alloy prepared by melting fine powders of Al-Si eutectic alloy contains lower content of Si and higher content of oxygen.

关 键 词：AL-SI共晶合金 微粉 熔化 熔化熵 

分 类 号：TG146[一般工业技术—材料科学与工程]