| 机械化学还原法快速制备Mo5Si3-Al2O3纳米复合粉体（英文） |
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| 引用本文： | 陈辉,马勤,宋秋香.机械化学还原法快速制备Mo5Si3-Al2O3纳米复合粉体（英文）[J].中国有色金属学会会刊,2011(7):1557-1562. |
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| 作者姓名： | 陈辉 马勤 宋秋香 |
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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; |
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| 基金项目： | Project(3ZS061-A25-038) supported by the Natural Science Foundation of Gansu Province,China |
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| 摘 要： | 以MoO3粉、Mo粉、Si粉及Al粉为原料,采用机械合金化法合成了纳米Mo5Si3-20%Al2O3(质量分数)复合粉体。采用XRD、SEM、TEM和DTA等对复合粉体在球磨过程中结构变化进行了研究。结果表明:球磨10h后合成的Mo5Si3-20%Al2O3复合粉体,反应以爆炸模式进行。球磨30h后,Mo5Si3和Al2O3的晶粒尺寸分别为36.3nm和21.9nm。随着球磨时间的延长,Mo5Si3和Al2O3的晶粒尺寸变小,衍射峰宽化程度降低。DTA和XRD分析结果表明,复合粉体具有好的热稳定性,球磨30h后再在1000℃退火1h后复合粉体没有发生物相转变。
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| 关 键 词： | Mo5Si3-Al2O3 纳米晶 机械合金化 金属间化合物 |
Rapid synthesis of Mo_5Si_3-Al_2O_3 nanocomposite powders by mechanochemical reduction method |
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| CHEN Hui,MA Qin,SONG Qiu-xiang State Key Laboratory of Gansu Advanced Non-ferrous Metal Materials,School of Materials Science , Engineering,Lanzhou University of Technology,Lanzhou ,China.Rapid synthesis of Mo_5Si_3-Al_2O_3 nanocomposite powders by mechanochemical reduction method[J].Transactions of Nonferrous Metals Society of China,2011(7):1557-1562. |
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| Authors: | CHEN Hui MA Qin SONG Qiu-xiang State Key Laboratory of Gansu Advanced Non-ferrous Metal Materials School of Materials Science Engineering Lanzhou University of Technology Lanzhou China |
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| Affiliation: | CHEN Hui,MA Qin,SONG Qiu-xiang State Key Laboratory of Gansu Advanced Non-ferrous Metal Materials,School of Materials Science and Engineering,Lanzhou University of Technology,Lanzhou 730050,China |
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| Abstract: | Mo5Si3-20%Al2O3 (mass fraction) nanocomposite was synthesized by mechanical alloying (MA) of mixture of MoO3,Mo,Si and Al powders.The structural evolutions of powder particles during mechanical alloying were studied by X-ray diffractometry (XRD),scanning electron microscopy (SEM),transmission electron microscopy (TEM) and differential thermal analysis (DTA).Results show that Mo5Si3-20%Al2O3 was obtained after 10 h of milling.The spontaneous reaction of powders takes place in an explosive mode.The crystallit... |
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| Keywords: | Mo5Si3-Al2O3 nanocrystalline mechanical alloying intermetallic |
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