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鎢粉級(jí)配法制備新型銅鎢合金
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西安理工大學(xué),西安理工大學(xué),西安理工大學(xué),西安理工大學(xué),西安理工大學(xué)

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“ 863”計(jì)劃(2015AA034304),國(guó)家自然科學(xué)基金(No.51401162)(No.U1502274),陜西省科技計(jì)劃 (2014SZS08-Z01) (2015XT-16)資助.


Preparation of New Copper-tungsten Alloy by Grading Tungsten Powder
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    摘要:

    傳統(tǒng)單一粒徑鎢粉制備的銅鎢(CuW)合金難以滿足電容器開(kāi)關(guān)中高頻次開(kāi)斷電觸頭的使用要求,本文采用三種粒徑鎢粉(超微米、微米和亞微米)級(jí)配法制備了新型CuW合金,利用場(chǎng)發(fā)射掃描電鏡對(duì)CuW合金組織特征進(jìn)行顯微分析,并對(duì)新型CuW合金耐電弧擊穿性能進(jìn)行研究。結(jié)果表明,鎢粉級(jí)配制備CuW合金,能形成多種W-W燒結(jié)頸,強(qiáng)化鎢骨架,熔滲Cu相更分散更均勻,從而使得CuW合金硬度、電導(dǎo)率度均高出國(guó)家標(biāo)準(zhǔn)30~40%,且CuW合金耐電壓強(qiáng)度較高,此外,新型 CuW/CrCu整體材料結(jié)合強(qiáng)度高出國(guó)家標(biāo)準(zhǔn)40~60%。

    Abstract:

    The traditional CuW alloy prepared by single particle size of tungsten powder has been difficult to meet the requirement of electrical contact of the high-frequency switching capacitor switch.This experimen prepares CuW alloy with three kinds of particle size of tungsten powder (super rice, micron and submicron).The microstructures of CuW alloy were analyzed by field emission scanning electron microscopy and the arc breakdown properties of CuW alloys were investigated.The results show that CuW alloy prepared by grading tungsten powder can form a variety of W-W sintered neck which strengthened tungsten skeleton. This kind of tungsten skeleton makes the Cu phase more uniform and more dispersed.The hardness and electrical conductivity of the CuW alloy is 30~40% higher than the national standard, and the CuW alloy has a higher resistance of voltage strength.In addition,the bonding strength of the CuW/CrCu prepared by grading tungsten powder is 40~60% higher than the national standard.

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鄒軍濤,王媛媛,楊曉紅,肖鵬,梁淑華.鎢粉級(jí)配法制備新型銅鎢合金[J].稀有金屬材料與工程,2017,46(9):2661~2666.[Zou Juntao, Wang Yuanyuan, Yang Xiaohong, Xiao Peng, Liang Shuhua. Preparation of New Copper-tungsten Alloy by Grading Tungsten Powder[J]. Rare Metal Materials and Engineering,2017,46(9):2661~2666.]
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  • 收稿日期:2016-10-21
  • 最后修改日期:2017-03-16
  • 錄用日期:2017-03-16
  • 在線發(fā)布日期: 2017-11-29
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