为了控制DIMOX工艺中复合材料的生长速度和体积,采用压差法补加合金,使剩余铝合金熔体的成分得到调整并与正在氧化生长的Al2O3/Al复合材料层保持连续接触.试验研究了补加合金成分对Al-3Mg-10Si合金氧化生长的影响作用.结果表明:补加纯Al或低Mg、Si含量的铝合金,能够降低合金熔体的含镁量,缩短材料生长前沿合金熔体成分到达Al2O3-(Al,Mg)两相区的时间,促进传质过程,加速材料生长,有利于获取较大体积的复合材料.
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