Densification behaviour of pure molybdenum powder by spark plasma sintering

被引：77

作者：

Ohser-Wiedemann, R. ^{[1
]}

Martin, U. ^{[1
]}

Seifert, H. J. ^{[1
]}

Mueller, A. ^{[1
]}

机构：

[1] TU Bergakad Freiberg, Inst Mat Sci, D-09599 Freiberg, Germany

来源：

INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS | 2010年 / 28卷 / 04期

关键词：

Molybdenum; Spark plasma sintering; Densification; Microstructure; SINTERING/SYNTHESIS PROCESS; FUNDAMENTAL INVESTIGATIONS; PRESSURE; MICROSTRUCTURE; NANOPOWDERS;

D O I：

10.1016/j.ijrmhm.2010.03.003

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Pure molybdenum was sintered with SPS under various temperatures, external pressures and heating rates. The microstructure of the specimens representing the different sintering conditions was investigated by classical metallographic methods. The relative density, the microhardness and the chord length distribution were measured. Linear shrinkage, depending on time or temperature, was calculated from piston travel, which was recorded during sintering process. These results show that the main part of consolidation takes place during fast heating up. The densification behaviour is controlled mainly by sintering temperatures and applied pressure. The molybdenum powder was successfully consolidated by SPS in very short times. A relative density of 95% was reached by sintering temperatures of 1600 degrees C and external pressure of 67 MPa. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：550 / 557

页数：8

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