Explosive compaction-sintering of tungsten/copper gradient material

CHEN Xiang; LI Xiaojie; MIAO Yusong; YAN Honghao; WANG Xiaohong

doi:10.11883/bzycj-2017-0307

Volume 39 Issue 1

Oct. 2018

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CHEN Xiang, LI Xiaojie, MIAO Yusong, YAN Honghao, WANG Xiaohong. Explosive compaction-sintering of tungsten/copper gradient material[J]. Explosion And Shock Waves, 2019, 39(1): 015301. doi: 10.11883/bzycj-2017-0307

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CHEN Xiang, LI Xiaojie, MIAO Yusong, YAN Honghao, WANG Xiaohong. Explosive compaction-sintering of tungsten/copper gradient material[J]. Explosion And Shock Waves, 2019, 39(1): 015301. doi: 10.11883/bzycj-2017-0307

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Explosive compaction-sintering of tungsten/copper gradient material

doi: 10.11883/bzycj-2017-0307

1.
Department of Engineering Mechanics, Dalian University of Technology, Dalian 116024, Liaoning, China
2.
State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian 116024, Liaoning, China

Received Date: 2017-09-03
Rev Recd Date: 2017-12-05
Publish Date: 2019-01-05

Abstract

Abstract

In this study we investigated the explosive compaction-sintering for fabricating a high-density tungsten/copper alloy on a copper surface. First, 50% W-50% Cu tungsten/copper alloy powder and 75% W-25% Cu were prepared by mechanical alloying. Next, the alloy powders were pre-compacted and sintered in hydrogen atmosphere, followed by explosive compaction. Then, a high-density tungsten/copper gradient material was obtained with the coatings and the matrix tightly bonded and the copper enriched at the interfaces between the tungsten/copper particles. The tungsten grains in the 50% W-50% Cu layer did not grow, and in the 75% W-25% Cu layer the tungsten and copper were enriched in local regions. Porosity tests were carried out, the porosity of the 50% W-50% Cu layer was 0.04%, and that of the 75% W-25% Cu layer was 0.11%. The contents of tungsten and copper in the coatings were similar to the added ratio of the tungsten powder and copper powder. The hardness of the tungsten/copper gradient layer exhibited a tendency of gradient change, varying between 125-341, much bigger than 50, that of the copper.
- explosive compaction-sintering,
- coating,
- tungsten/copper alloy,
- energy dispersive spectrometer,

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References(20)

References

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