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反應(yīng)合成與大塑性變形制備AgMeO電接觸材料的組織形貌特征
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國(guó)家自然科學(xué)基金項(xiàng)目(50361003);云南省科技攻關(guān)項(xiàng)目(2002GG04);云南省自然科學(xué)基金重點(diǎn)項(xiàng)目(2006E003Z,2004E004Z)


Microstructures of AgMeO Electric Contact Materials by Reactive Synthesis and Severe Plastic Deformation
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    摘要:

    采用反應(yīng)合成制備技術(shù)與大塑性變形加工技術(shù),研究了銀氧化錫(AgSnO2)、銀氧化銅(AgCuO)、銀氧化釔(AgY2O3) 3種電接觸復(fù)合材料的組織均勻化。結(jié)果表明,在相同工藝條件下,通過(guò)反應(yīng)合成技術(shù)所制備的3種電接觸復(fù)合材料具有不同的顯微組織形貌。產(chǎn)生這種現(xiàn)象的原因主要是合金體系中元素性質(zhì)不同,使得反應(yīng)合成制備中元素的擴(kuò)散機(jī)制不同所造成的。通過(guò)大塑性變形加工,能夠?qū)Σ煌@微組織形貌復(fù)合材料的顯微組織進(jìn)行均勻化處理,只是對(duì)于不同的材料體系,對(duì)大塑性變形強(qiáng)度有不同的要求。

    Abstract:

    The microstructure homogenizations of AgSnO2, AgCuO and AgY2O3 electric contact materials prepared by reactive synthesis process and severe plastic deformation process were investigated. The result showed that the microstructures of the three electric contact materials were different under the same process conditions. The main reason of the above mentioned results is attributed to different diffusion mechanisms which are caused by different element natures in the alloy system. The microstructures of the three electric contact materials can be homogenized by severe plastic deformation, Fore the different electric contact material systems, different plastic deformation degrees are required.

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周曉龍,曹建春,陳敬超,張昆華,于 杰,杜 焰,耿永紅,孫加林,吳大平.反應(yīng)合成與大塑性變形制備AgMeO電接觸材料的組織形貌特征[J].稀有金屬材料與工程,2009,38(6):991~994.[Zhou Xiaolong, Cao Jianchun, Chen Jingchao, Zhang Kunhua, Yu Jie, Du Yan, Geng Yonghong, Sun Jialing, Wu Daping. Microstructures of AgMeO Electric Contact Materials by Reactive Synthesis and Severe Plastic Deformation[J]. Rare Metal Materials and Engineering,2009,38(6):991~994.]
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  • 收稿日期:2009-03-03
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