Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 505, Issue 1-2, Pages 131-135Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2008.11.012
Keywords
Tungsten; Ultra-fine grained; Resistance sintering; Ultra-high pressure
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Funding
- National Natural Science Foundation of China [50634060]
- Helmholtz-CSC Scholarship
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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.
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