Effect of Sparking Plasma Sintering Temperature on the Microstructure and Properties of Ultra-fine Crystalline W-40Cu Composites

Chen Chunhao1; Zeng Yun2; Xue Lihong1; Yan Youwei1

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Effect of Sparking Plasma Sintering Temperature on the Microstructure and Properties of Ultra-fine Crystalline W-40Cu Composites
Vol. 31, Issue 12, Pages: 1151-1154(2011)
Published： 2011 ，
DOI：

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[1]陈春浩,曾云,薛丽红,严有为.放电等离子烧结温度对超细晶W-40Cu复合材料的影响[J].特种铸造及有色合金,2011,31(12):1151-1154.

Chen Chunhao1, Zeng Yun2, Xue Lihong1, et al. Effect of Sparking Plasma Sintering Temperature on the Microstructure and Properties of Ultra-fine Crystalline W-40Cu Composites. [J]. Special Casting & Nonferrous Alloys 31(12):1151-1154(2011)
[1]陈春浩,曾云,薛丽红,严有为.放电等离子烧结温度对超细晶W-40Cu复合材料的影响[J].特种铸造及有色合金,2011,31(12):1151-1154. DOI：

Chen Chunhao1, Zeng Yun2, Xue Lihong1, et al. Effect of Sparking Plasma Sintering Temperature on the Microstructure and Properties of Ultra-fine Crystalline W-40Cu Composites. [J]. Special Casting & Nonferrous Alloys 31(12):1151-1154(2011) DOI：

摘要

采用高能球磨法制备了W-40Cu超细晶复合粉体

继而进行了放电等离子烧结（SPS）

获得了致密的超细晶W-40Cu块体复合材料

着重研究了烧结温度对复合材料组织和性能的影响。结果表明

随着烧结温度升高

材料的致密度、硬度和电导率也随之升高;在950℃烧结5min的W-40Cu复合材料

W颗粒尺寸约300～500nm

相对致密度达98%

显微硬度HV为287

电导率为17.9MS/m。

Abstract

Bulk ultra-fine crystalline W-40Cu composites with compact structure were fabricated by spark plasma sintering（SPS） technique with super microcrystalline W-40Cu powders which were prepared by high energy ball milling technology.The effects of sintering temperature on the microstructure and properties of the composites were investigated.The results

show that with the increase of the sintering temperature from 800 ℃ to 950 ℃

the relative density

micro-hardness

and electrical conductivity of the composites prepared are increased.The composites sintered at 950 ℃ for 5 min make approximately 300～500 nm in W grain size

287HV in micro-hardness

relative density of 98%

and electrical conductivity of 17.9 MS/m.