在铁基高铬合金粉末球磨体系中加入一定量的稀土元素及其氧化物 ,当稀土元素铈的含量达到 0 4%～ 0 6 %时 ,球磨以后活性氧的去除量达到最大值 ,附加一定量的稀土氧化物有利于脱氧 ;通过热力学分析得出 :稀土元素在机械球磨过程中可以将粉料体系中的大部分氧化物还原 ,起到保碳的作用。 In the iron-based high-chromium alloy powder ball milling system by adding a certain amount of rare earth elements and oxides, when the content of rare earth elements cerium reaches 0 4% ~ 0 6%, the maximum removal of reactive oxygen species after milling, plus a certain The amount of rare earth oxide is conducive to deoxidation; thermodynamic analysis shows that: rare earth elements in the mechanical milling process can be most of the powder system oxide reduction, played the role of carbon protection.