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Cu原子簇觸發(fā)形核下的深過冷Ag-Ge合金組織演變研究
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TG113.12 TG146.32

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中科院知識創(chuàng)新工程空間材料科學研究項目（KJCX2-SW-L05）


Microstructural Evolution of the Deeply Undercooled Ag-Ge Alloys with Cu Atoms Cluster Triggered Nucleation
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    摘要:

    采用玻璃包覆的方法獲得具有較大過冷度的亞共晶、共晶以及過共晶Ag-Ge合金熔體，并通過高能離子束轟擊Cu箔產(chǎn)生Cu原子團簇濺射到過冷合金熔體中來觸發(fā)非均質(zhì)形核過程。凝固后合金顯微組織的分析結(jié)果表明：在深過冷合金熔體中引入Cu原子團簇，它對亞共晶、共晶以及過共晶Ag-Ge合金的顯微組織演變有著不同的影響效果，分析了顯微組織的演變規(guī)律與形成機制。

    Abstract:

    The Ag-Ge alloy melts with deeply undercooled hypoeutectic, eutectic and hypereutectic were obtained via glass fluxing technique. The nucleation of the deeply undercooled alloy melts were triggered by atoms cluster sputtering on the surface of the melts. The atoms clusters were generated by an ion beam bombarding on the Cu foil fixed above the alloy melts. The resultant microstructure reveals that the induced atom clusters exert great influence on the microstructural evolution of the highly undercooled eutectic and hypereutectic Ag-Ge alloys, but no obvious influence on the highly undercooled hypoeutectic alloy. The microstructural evolution and formation mechanism were analyzed and discussed.

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孫玉峰 劉曉芳 王育人 魏炳忱. Cu原子簇觸發(fā)形核下的深過冷Ag-Ge合金組織演變研究[J].稀有金屬材料與工程,2006,35(5):732~735.[Sun Yufeng, Liu Xiaofang, Wang Yuren, Wei Bingchen. Microstructural Evolution of the Deeply Undercooled Ag-Ge Alloys with Cu Atoms Cluster Triggered Nucleation[J]. Rare Metal Materials and Engineering,2006,35(5):732~735.]
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  • 收稿日期:2005-03-10
  • 最后修改日期:2005-03-10
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