Composite Ta-Cu powders prepared by high energy milling

被引:19
作者
Costa, F. A. [1 ]
Silva, A. G. P. [2 ]
Silva, J. F., Jr. [1 ]
Gomes, U. U. [3 ]
机构
[1] Univ Fed Rio Grande do Norte, Programa Posgrad Ciencia & Engn Mat, BR-59072970 Natal, RN, Brazil
[2] UENF, Lab Mat Avancados, BR-28015620 Campos Dos Goytacazes, RJ, Brazil
[3] Univ Fed Rio Grande do Norte, Dept Fis Teor & Expt, BR-59072970 Natal, RN, Brazil
关键词
Ta-Cu alloy; amorphization; high energy milling; composite particles;
D O I
10.1016/j.ijrmhm.2007.12.002
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
A mixture of Ta and 20 wt%Cu elemental powders were milled in a high energy mill under two conditions of milling intensity. Composite particles in both conditions were formed. The original Ta particles were firstly fragmented and then pierced in the deformed Cu particles. Cu hardens due to cold work and breaks. The final powder is finer than the initial powders. The final composite particles are homogeneous and consist of amorphous, separated Cu and Ta phases. The more intense milling condition produced composite particles with shorter milling time and amorphization of both phases after 50 h of milling. The less intense milling condition amorphized only the Cu phase. The composite particles can produce denser structures than mixed powders, if heated above the Cu melting point. (C) 2008 Elsevier Ltd. All rights reserved.
引用
收藏
页码:499 / 503
页数:5
相关论文
共 10 条
  • [1] MECHANICAL ALLOYING
    BENJAMIN, JS
    [J]. SCIENTIFIC AMERICAN, 1976, 234 (05) : 40 - 49
  • [2] Cu-Nb alloys prepared by mechanical alloying and subsequent heat treatment
    Botcharova, E
    Freudenberger, J
    Schultz, L
    [J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2004, 365 (1-2) : 157 - 163
  • [3] Supersaturated solid solution of niobium in copper by mechanical alloying
    Botcharova, E
    Heilmaier, M
    Freudenberger, J
    Drew, G
    Kudashow, D
    Martin, U
    Schultz, L
    [J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2003, 351 (1-2) : 119 - 125
  • [4] Costa F.A., 2003, POWDER TECHNOL, V134, P123, DOI DOI 10.1016/50032-5910(03)00123-2
  • [5] GERMAN RM, 1994, INT J POWDER METALL, V30, P205
  • [6] Densification behavior of mechanically alloyed W-Cu composite powders by the double rearrangement process
    Kim, JC
    Ryu, SS
    Kim, YD
    Moon, IH
    [J]. SCRIPTA MATERIALIA, 1998, 39 (06) : 669 - 676
  • [7] TEMPERATURE-DEPENDENCE OF MECHANICAL ALLOYING AND GRINDING IN NI-ZR, CU-TA AND FE-B ALLOY SYSTEMS
    LEE, CH
    FUKUNAGA, T
    MIZUTANI, U
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1991, 134 : 1334 - 1337
  • [8] PETZOLDT F, 2001, INT C POWD MET PART, P118
  • [9] Mechanical alloying and milling
    Suryanarayana, C
    [J]. PROGRESS IN MATERIALS SCIENCE, 2001, 46 (1-2) : 1 - 184
  • [10] AMORPHIZATION OF CU-TA ALLOYS BY MECHANICAL ALLOYING
    VELTL, G
    SCHOLZ, B
    KUNZE, HD
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1991, 134 : 1410 - 1413