[1]陈鑫,黄海波,李凡.热电材料β-FeSi2机械合金化和热处理相变[J].东南大学学报(自然科学版),2008,38(5):898-901.[doi:10.3969/j.issn.1001-0505.2008.05.030]
 Chen Xin,Huang Haibo,Li Fan.Phase transformation in β-FeSi2 thermoelectric materials during mechanical alloying and heat-treatment[J].Journal of Southeast University (Natural Science Edition),2008,38(5):898-901.[doi:10.3969/j.issn.1001-0505.2008.05.030]
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热电材料β-FeSi2机械合金化和热处理相变()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
38
期数:
2008年第5期
页码:
898-901
栏目:
材料科学与工程
出版日期:
2008-09-20

文章信息/Info

Title:
Phase transformation in β-FeSi2 thermoelectric materials during mechanical alloying and heat-treatment
作者:
陈鑫 黄海波 李凡
东南大学江苏省先进金属材料高技术研究重点实验室,南京 211189
Author(s):
Chen Xin Huang Haibo Li Fan
Jiangsu Key Laboratory of Advanced Metallic Materials, Southeast University, Nanjing 211189, China
关键词:
β-FeSi2 热电材料 机械合金化
Keywords:
β-FeSi2 thermoelectric material mechanical alloying
分类号:
TB34;TF124
DOI:
10.3969/j.issn.1001-0505.2008.05.030
摘要:
用机械合金化法研制出了β-FeSi2热电材料.研究了球料比、球磨时间等机械合金化参数以及热处理工艺对Fe-Si合金相变的影响.采用X射线衍射仪(XRD)及扫描电子显微镜(SEM)分析了Fe-Si合金相组成及微观形貌.研究结果表明:在球料比为80:1、球磨速度为450 r/min的条件下,球磨5 h后的粉体的组成相为α-Fe2Si5,β-FeSi2和ε-FeSi; 随着球磨时间的延长,Fe-Si合金粉体的颗粒度变细,成分更加均匀,β-FeSi2的含量逐渐增多; 增加球料比也能使Fe-Si合金粉体中的β-FeSi2增多; 经800 ℃热处理保温0.5 h后可以获得单相β-FeSi2.
Abstract:
Thermoelectric material, β-FeSi2, was prepared by mechanical alloying method. The influences of the alloying parameters on the phase transformation of Fe-Si alloy were studied, such as the ball-to-powder weight ratio, milling time, and heat treatment. X-ray diffraction(XRD)and scanning electron microscope(SEM)were applied to analyze the phases and microstructure of the milled or/and treated Fe-Si alloy. It is indicated that under the condition of ball to powders ratio of 80:1, rotation speed of 450 r/min and milling time of 5 hours, powders are composed of α-Fe2Si5、β-FeSi2 and ε-FeSi. The longer the mechanical milling time is, the finer and more homogeneous the Fe-Si powders are and also the more the β-FeSi2 content is. With the increasing of ball-to-powder ratio, the amount of β-FeSi2 in the Fe-Si alloy will increase. A single-phase β-FeSi2 can be obtained by heat-treatment at 800 ℃ for 0.5 h.

参考文献/References:

[1] 李凡,吴炳尧,赵华庭.β-FeSi2——一种很有发展前途的热电材料[J].功能材料,1997,28(3):312-315.
  Li Fan,Wu Bingyao,Zhao Huating.β-FeSi2:a kind of thermoelectric material with brilliant prospects[J].Journal of Functional Materials,1997,28(3):312-315.(in Chinese)
[2] 芦玉峰,赵新兵,倪华良,等.热压快速凝固Fe_(0.92)Mn(0.08)Six半导体的热电性能[J].稀有金属材料与工程,2004,33(9):980-983.
  Lu Yufeng,Zhao Xinbing,Ni Hualiang,et al.Transport properties of Fe_(0.92)Mn(0.08)Six semiconductor prepared by rapid solidification and hot pressing[J]. Rare Metal Materials and Engineering,2004,33(9):980-983.(in Chinese)
[3] Belyaev E,Mamylov S,Lomovsky O.Mechanochemical synthesis and properties of thermoelectric material β-FeSi2[J]. J Mater Sci,2000,35(10):2029-2035.
[4] 周芸,周兆,沈容.机械合金化制备β-FeSi2热电材料的研究[J].粉末冶金技术,2004,22(4):228-231.
  Zhou Yun,Zhou Zhao,Shen Rong.Study on thermoelectric β-FeSi2 prepared by mechanical alloying[J]. Powder Metallurgy Technology,2004,22(4):228-231.(in Chinese)
[5] Schaffer G B,Forrester J S.The influence of collision energy and strain accumulation on the kinetics of mechanical alloying[J].Journal of Materials Science,1997,32(12):3157-3162.
[6] 李伟文,赵新兵,邬震泰,等.含Sm,Mn的P型FeSi2基热电材料的电学性能[J].中国有色金属学报,2003,13(2):419-422.
  Li Weiwen,Zhao Xinbing,Wu Zhentai,et al.Electrical properties of P-type FeSi2based thermoelectric materials doped with Sm and Mn[J]. The Chinese Journal of Nonferrous Metals,2003,13(2):419-422.(in Chinese)
[7] 李凡,吴炳尧,戴挺,等.机械合金化法制备Fe-Si纳米晶合金[J].特种铸造及有色合金,2001(4):24-26.
  Li Fan,Wu Bingyao,Dai Ting,et al.Fe-Si nanocrystalline alloy prepared by mechanically alloying technique[J].Special Casting & Nonferrous Alloys,2001(4):24-26.(in Chinese)

备注/Memo

备注/Memo:
作者简介: 陈鑫(1984—),女,硕士生; 黄海波(联系人),男,高级工程师,sem@seu.edu.cn.
基金项目: 国家重点基础研究发展计划(973计划)资助项目(2007CB616903).
引文格式: 陈鑫,黄海波,李凡.热电材料β-FeSi2机械合金化和热处理相变[J].东南大学学报:自然科学版,2008,38(5):898-901.
更新日期/Last Update: 2008-09-20