高能反应球磨/退火制备Fe3(Si,Al)粉体及其有序度研究Degree of ordering of Fe3(Si,Al) powders prepared by high energy ball milling and annealing
贾建刚,马勤,吕晋军,周琦,季根顺,郭铁明
摘要(Abstract)：
利用Fritsch Pulversitte 5型行星式球磨机、扫描电子显微镜和X射线衍射仪研究3Fe/xSi/(1-x)Al(x=0.75,0.5,0.25)混合粉末的机械球磨过程,分析球磨1h和5h的粉末在860°C条件下退火4h的物相组成,并采用长程有序参数定量表征了退火得到的有序相的有序程度。研究表明,试验粉末球磨5h以上可以得到单相Fe(Si,Al)固溶体,其晶粒尺寸约为20nm;球磨5h的3Fe/xSi/(1-x)Al(x=0.75,0.5,0.25)混合粉末在860°C条件下退火4h后形成的有序相分别为Al0.3Fe3Si0.7、Al0.5Fe3Si0.5和Al0.7Fe3Si0.3,其有序度分别为0.79060、.6888和0.7032。
关键词(KeyWords)： Fe3(Si,Al);长程有序参数;有序度;高能球磨;退火
基金项目(Foundation): 甘肃省自然科学基金(3ZS062-B25-025)
作者(Author): 贾建刚,马勤,吕晋军,周琦,季根顺,郭铁明
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