【摘要】 利用运动的粉末粒子的机械能冲击工件表面进行助渗铝 ,将渗铝温度由 90 0～ 1 0 50℃降低到 440～ 60 0℃。渗铝层的相结构为Fe2 Al5,铝含量 (质量分数 )约为 50 %。 80 0℃× 4h扩散退火后渗铝层变为FeAl,含铝 (质量分数 )约为 30 %。机械能助渗铝件可在 780℃以下长期使用。更多还原

【Abstract】 The surface of workpieces is impacted by the mechanical energy of moving powder particles during alitizing,this method can prompt alitizing process and alitizing temperature can be decreased from 900～1050℃ to 440～600℃.The phase of the alitizing layer is Fe 2Al 5,aluminium content reach about 50%wt.The phase of alitizing layer may transform to FeAl after heating 4h at 800℃,reserved aluminium contentis about 30%wt.The workpieces processed by this method also can be used for a long time below 780℃.更多还原