Fabrication and characterization of ultra-fine grained tungsten by resistance sintering under ultra-high pressure

被引：50
|
作者：
Zhou, Zhangjian [1 ,2 ]
Ma, Yao
Du, Juan
Linke, Jochen [2 ]
机构：
[1] Univ Sci & Technol Beijing, Sch Mat Sci & Engn, Lab Special Ceram & Powder Met, Beijing 100083, Peoples R China
[2] Forschungszentrum Julich, EURATOM Assoc, D-52425 Julich, Germany
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2009年 / 505卷 / 1-2期
基金：
中国国家自然科学基金;
关键词：
Tungsten; Ultra-fine grained; Resistance sintering; Ultra-high pressure; DEFORMATION; BEHAVIOR; ALLOYS; METALS; COPPER; SIZE;
D O I：
10.1016/j.msea.2008.11.012
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The consolidation behavior of tungsten powders with different particle size (ranging from submicron size to several microns) have been investigated by using a novel method combining resistance sintering with ultra-high pressures. The densification effects of the consolidation parameters, including pressure, input power and sintering time. have been investigated. High density is achieved for consolidation of micron sized tungsten powder and the microstructure retained its fine-grain size. The sintered samples achieve higher hardness and bending strength when the finer powder is used. The sintering mechanism of this method was quite different from other sintering techniques. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：131 / 135
页数：5
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