机械合金化Fe─B非晶合金及纳米合金的形成  

FORMATION OF AMORPHOUS AND NANOCRYSTALLINE ALLOYS OF Fe-B BY MECHANICAL ALLOYING

作　　者：杨元政[1] 杨柳静[1] 刘正义[1] 马学鸣[1] 董远达[1] 庄育智[1] 

机构地区：[1]华南理工大学,上海大学,中国科学院金属研究所

出　　处：《材料研究学报》1995年第1期33-39,共7页Chinese Journal of Materials Research

基　　金：国家自然科学基金

摘　　要：在适当条件下机械合金化可以形成急冷法难以得到的单一Ｆｅ６０Ｂ４０非晶合金，而在其他成分内形成亚稳纳米合金。在众多的球磨条件中，球磨机的转速是控制合金化的重要因素，空气中的氧对小颗粒界面产生了强烈的污染作用，从而抑制了原子的相互扩散，难以形成单一的非晶产物。不同球磨条件下的产物含有的非晶相的晶化温度比单一非晶相合金的晶化温度稍高，并且与球磨条件以及成分的关系不大。An amorphous alloy of single phase could be prepared by mechanical alloying for the nominal composition of Fe60B40 which could hardly be formed by the rapid solidification of molten alloys,while nanocrystalline alloys would be produced in the other composition ranges studied.The velocity of rotation of miller is the critical factor to control the process of alloying in the all milling conditions and an amorphous alloy of single phase could not be obtained at very low velocity of rotation. Oxygen of air in the milling system would pollute the clean interfaces and hinder the atoms to diffuse each other, so that amorphization is more difficult to be occurred. The crystallization temperatures of amorphous phases in the products are higher than those of amorphous alloys with single phase, and hardly independent of the milling conditions and the composition.

关 键 词：机械合金化 非晶合金 纳米合金 晶化温度 

分 类 号：TG139.8[一般工业技术—材料科学与工程]