| 球磨参数对机械合金化制备Al_2O_3/Mo_5Si_3复合粉体特性的影响 |
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| 引用本文： | 赵雪,陈辉,马勤,徐轲.球磨参数对机械合金化制备Al_2O_3/Mo_5Si_3复合粉体特性的影响[J].粉末冶金工业,2011,21(2). |
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| 作者姓名： | 赵雪 陈辉 马勤 徐轲 |
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| 作者单位： | 兰州理工大学甘肃省有色金属新材料省部共建国家重点实验室,兰州,730050 |
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| 基金项目： | 甘肃省自然科学基金项目(3ZS061-A25-038); 兰州理工大学特色研究方向梯队资助项目(7200304) |
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| 摘 要： | 以MoO3粉、Mo粉、Si粉及Al粉为原料,采用机械化学还原法制备了Al2O3/Mo5Si3复合粉体。利用XRD、SEM等对复合粉体在球磨过程中的物相转变和形貌进行表征,并对球磨参数对机械合金化过程的影响进行探讨。结果表明,原料粉体球磨10 h后转变为Al2O3/Mo5Si3复合粉体,反应较完全。随球磨时间延长,复合粉体细小均化,粉体粒度较小,球磨20h后粉体粒度在3~5μm之间,随球磨转速的提高,球磨时间延长,球磨提供能量提高,反应开始时间变短。
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| 关 键 词： | 机械合金化 Al2O3/Mo5Si3 复合粉体 |
EFFECTS OF BALL MILLING TECHNIQUES ON CHARACTERISTICS OF Al_2O_3/Mo_5Si_3 COMPOSITE POWDER BY MECHANICAL ALLOYING |
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| ZHAO Xue,CHEN Hui,MA Qin,XU Ke.EFFECTS OF BALL MILLING TECHNIQUES ON CHARACTERISTICS OF Al_2O_3/Mo_5Si_3 COMPOSITE POWDER BY MECHANICAL ALLOYING[J].Powder Metallurgy Industry,2011,21(2). |
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| Authors: | ZHAO Xue CHEN Hui MA Qin XU Ke |
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| Affiliation: | ZHAO Xue,CHEN Hui,MA Qin,XU Ke (State Key Laboratory of Gansu Advanced Non-ferrous Metal Materials,Lanzhou University of Technology,Lanzhou 730050,China) |
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| Abstract: | Al2O3/Mo5Si3 nanocomposite powder was synthesized by mechanochemical reduction of MoO3 with Mo,Si and A1 powders.The phase transformation and micrograph of composite powders and mechanical alloying under different milling conditions were investigated by usisng XRD,SEM.The results showed that Al2O3/Mo5Si3 composite powder were obtained by ball milling of raw materials for 10 h,and the reaction was complete.With extension of ball milling time the composite powders possessed more spherical shapes and uniform s... |
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| Keywords: | mechanical alloying Al2O3/Mo5Si3 composite powders |
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