机械合金化:热处理法制备钼硅化合物  

Preparation of Molybdenum Silicides by Mechanical Alloying—Heat Treatment

作　　者：王德志[1] 杨红旗[2] 刘心宇[3] 左铁镛[4] 

机构地区：[1]长沙铁道学院机电工程学院,湖南长沙410075 [2]国防科学技术大学,湖南长沙410073 [3]中南工业大学材料科学与工程系,湖南长沙410083 [4]北京工业大学,北京100022

出　　处：《长沙铁道学院学报》2000年第4期84-87,共4页Journal of Changsha Railway University

摘　　要：通过机械合金化 :热处理法制备钼硅化合物 ,研究了钼、硅混合粉末相的变化 ,结果表明 ,在机械合金化过程中 ,Mo- 6 6 .7at.% Si粉末能形成 Mo Si2 ,继续球磨 ,Mo Si2 非晶化 ,Mo- 37.5 at% Si和 Mo- 2 2 .5 at.% Si粉末不能形成 Mo5Si3和 Mo3Si,只形成 Mo的过饱和固溶体 ,继续球磨 ,也发生非晶化 ,将非晶粉末进行适当热处理后 ,可以得到 Mo Si2 、Mo5Si3和The phase transformation of molybdenum and silicon mixture powders has been investigated in course of prepartion of molybdenum silicides by mechanical alloying heat treatment.The results showed that MoSi 2 could be generated in Mo 66.7 at.%Si powders during mechanical alloying(MA).Amorphous phase of MoSi 2 has been formed.On the other hand,supersaturated solid solution of Mo(Si) has been generated instead of Mo 5Si 3 and Mo 3Si in Mo 37。5at.%Si and Mo 22.5at.%Si powders.Amorphous phase of supersaturated solid solution of Mo(Si) has been formed with increasing of milling time.MoSi 2,Mo 5Si 3 and Mo 3Si could be generated after heat treatment of amorphous powders.

关 键 词：钼硅化合物 机械合金化 热处理 

分 类 号：TG135[一般工业技术—材料科学与工程]