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反應(yīng)合成銀氧化錫電接觸材料導(dǎo)電性能研究
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TM241 TF125.23

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國家科技攻關(guān)(2001BA326C)，云南省科技攻關(guān)(2000B-03)聯(lián)合資助項(xiàng)目


Investigation of Electrical Conductivity of Silver Tin Oxide Electrical Contact Materials Fabricated by Reactive Synthesis
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    摘要:

    采用反應(yīng)合成技術(shù)和傳統(tǒng)粉末冶金技術(shù)制備銀氧化錫(AgSnO2)電接觸材料。對AgSnO2塊體材料進(jìn)行導(dǎo)電率測試和X射線衍射分析，對塊體材料及冷拉拔的AgSnO2線材進(jìn)行顯微組織分析(掃描電鏡、透射電鏡)。研究結(jié)果表明：采用反應(yīng)合成技術(shù)可以在銀基體中合成尺寸細(xì)小、界面新鮮的SnO2顆粒，制備AgSnO2電接觸材料；反應(yīng)合成法制備的AgSnO2材料中，微米級的SnO2顆粒系由納米級的SnO2顆粒聚集而成；反應(yīng)合成法制備的AgSnO2電接觸材料較傳統(tǒng)粉末冶金法制備的AgSnO2電接觸材料具有更高的導(dǎo)電性；采用反應(yīng)合成法制備的AgSnO2電接觸材料由于改變了Ag和SnO2的結(jié)合狀態(tài)使材料的加工性能和導(dǎo)電性能同時得到改善和提高。

    Abstract:

    Silver tin oxide(AgSnO2) was fabricated using the conventional powder metallurgy(PM) and a new reactive synthesis(RS) method. Electrical conductivity measurement and X ray diffraction analysis were carried out on bulk AgSnO2 microstructures were determined by scanning electron microscopy (SEM) and transmission electron microscopy (TEM) on the bulk AgSnO2 and its cold drawn wire. The results show that SnO2 particles with finer size and fresh interface can be formed in silver matrix as a result of the fabrication of AgSnO2 electrical contact materials by reactive synthesis. micrometer size tin oxide particles were assembled from nanometer scale particles during the RS process. Compared to conventionally PM processed, AgSnO2 electrical contact materials those fabricated by the RS process have a higher conductivity. and workability as a result of a change of combination states of silver and tin oxide.

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陳敬超 孫加林 杜焰 周曉龍 甘國友.反應(yīng)合成銀氧化錫電接觸材料導(dǎo)電性能研究[J].稀有金屬材料與工程,2003,(12):1053~1056.[Chen Jingchao, Sun Jialin, Du Yan, Zhou Xiaolong, Gan Guoyou. Investigation of Electrical Conductivity of Silver Tin Oxide Electrical Contact Materials Fabricated by Reactive Synthesis[J]. Rare Metal Materials and Engineering,2003,(12):1053~1056.]
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  • 最后修改日期:2002-12-10
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