| 机械合金化法制备Ni-Nb纳米级非晶合金 |
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| 引用本文： | 吕墨豪,东野生栓,高崇,武保林,赵玉华,张利,杜兴蒿. 机械合金化法制备Ni-Nb纳米级非晶合金[J]. 中国材料科技与设备, 2012, 0(1): 73-75 |
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| 作者姓名： | 吕墨豪 东野生栓 高崇 武保林 赵玉华 张利 杜兴蒿 |
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| 作者单位： | 沈阳航空航天大学材料科学与工程学院,辽宁沈阳110136 |
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| 基金项目： | 辽宁省教育厅基金资助项目（05L316）;沈阳航空航天大学博士启动基金项目（05YB31） |
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| 摘 要： | 本文采用机械合金化法（MA），以元素粉末为原料，对成分为Ni60 Nb40 的混合粉末进行球磨，采取湿磨和逐步提高球磨速度的方法，制备纳米级非晶合金。利用X射线衍射技术对球磨产物进行物相分析。结果表明，采取湿磨和分步提高球磨速度手段会促进纳米级非晶态组织的形成。此非晶合金的形成是晶粒细化、球磨过程中粒子的表面能增大、缺陷和应力增强等多种作用的结果。
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| 关 键 词： | Ni-Nb基合金 机械合金化 逐步增速球磨 非晶态 |
Preparation of Ni--Nb Base Nano--Amorphous Alloy by Mechanical Alloying |
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| Affiliation: | LVMo--hao , DONGYE Sheng--shuan, GAO Chong , WU Bao--lin, ZHAOYu--hua, ZHANGLi, DUXing--hao (School of Materials Science and Engineering, Shenyang Aerospace University, Liaoning, Shenyang, 110136, China) |
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| Abstract: | In this paper, pure raw materials of Ni and Nb powder is used to synthesize nano--scale amorphous Ni--Nb base alloy with the desired composition Ni60 Nb40 （at. %） by mechanical alloying. During preparation process, wet milling and step--wise increased milling rate ways are employed deliberately. The microstructural evolution during milling process was characterized by X--ray diffraction. The experimental results show that the wet milling and step--wise increased milling rate ways can promote the formation of nanoscale amorphous structure. The amorphization of Ni--Nb base alloy is thought to stem from several reasons, including refinement of grains, as well as the increase of surface energy, defects, stress of the resultant grains during milling process |
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| Keywords: | Ni--Nb base alloy Mechanical alloying Step--wise increased milling rate Amorphous |
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