这项发明叙述了向镁及镁合金熔体中加锆用的Mg-Zr混合物的制作方法。另一目的是提供大体上无氯化物夹杂的富锆基体。著者所说的大体上无氯化物,是指Mg-Zr混合物中含有的氯化物约在5％(重量)以下。含小于1％Zr的镁基合金之所以引起了重视,是因为它们具有良好的加工特性,并且如果也含有稀土元素的话,还可以改善高温性 This invention describes the preparation of a Mg-Zr mixture for zirconium addition to the melt of magnesium and magnesium alloys. Another object is to provide a zirconium-rich matrix that is substantially chloride-free. By substantially chloride-free, as the authors refer, it is meant that the chloride contained in the Mg-Zr mixture is below about 5% by weight. The reason why magnesium-based alloys containing less than 1% Zr are of interest is because they have good processing characteristics and can also improve high-temperature properties if they also contain rare earth elements