紧耦合雾化制备Al_(86)Ni_6Y_(4.5)Co_2La_(1.5)非晶粉末及其表征分析  

Preparation of Al_(86)Ni_6Y_(4.5)Co_2La_(1.5) Amorphous Powder by Close-Coupled Gas Atomization and Its Characterization Analysis

作　　者：王晓明[1] 朱胜[1] 杨柏俊[2] 赵阳[1] 张垚[1] Wang Xiaoming Zhu Sheng Yang Baijun Zhao Yang Zhang Yao(National Key Laboratory for Remanufacturing, Academy of Armored Force Engineering, Beijing 100072, China Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Science, Shenyang 110016, China)

机构地区：[1]装甲兵工程学院装备再制造技术国防科技重点实验室,北京100072 [2]中国科学院金属研究所沈阳材料科学国家联合实验室,辽宁沈阳110016

出　　处：《稀有金属材料与工程》2017年第9期2667-2672,共6页Rare Metal Materials and Engineering

基　　金：国家自然科学基金(51205408);军队计划重点基金(9140A27030312JB3501)

摘　　要：利用扫描电子显微镜、X射线衍射仪、X射线光电子能谱分析仪、粒度分析仪、差示扫描热量仪和显微硬度仪对采用紧耦合雾化方法制备的Al_(86)Ni_6Y_(4.5)Co_2La_(1.5)非晶合金粉末的微观结构、表面元素、粒径分布、热稳定性以及显微硬度进行了分析。结果表明,大部分粉末(约为80%)的粒径小于45μm,主要由非晶相和纳米晶化相组成,其晶化演变过程为非晶→非晶′+fcc-Al→fcc-Al+AlNiY+Al_2Y;粉末表面存在厚度约为180.81nm的Al_2O_3氧化层,硬度在3000MPa以上。The morphology,phase composition,particle size distribution,thermal stability and microhardness of the gas atomized Al_（86）Ni_6Y_（4.5）Co_2La_（1.5） amorphous alloy powder were investigated by scanning electron microscope（SEM）,X-ray diffractometry,X-ray Photoelectron Spectroscopy（XPS）,particle size analysis,differential scanning calorimetry（DSC）,and hardness tester,respectively. The result show that most of the Al_（86）Ni_6Y_（4.5）Co_2La_（1.5） amorphous alloy powder is below 45 μm（about 80%）,and the powder is consisted of amorphous matrix and nano-crystallization phase. Its crystallization process is amorphous→amorphous′＋fcc-Al→fcc-Al＋AlNiY＋Al_2Y. There exists a layer of Al_2O_3 oxidation with 180.81 nm in width. The hardness of the powder is beyond 3000 MPa.

关 键 词：紧耦合雾化 非晶粉末 晶化演变 显微硬度 

分 类 号：TG139.8[一般工业技术—材料科学与工程]