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U-Mo/Nb擴(kuò)散偶中擴(kuò)散系數(shù)的測(cè)定
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中國(guó)核動(dòng)力研究設(shè)計(jì)院、國(guó)家核燃料及材料重點(diǎn)實(shí)驗(yàn)室基金(JW071)


Measurement of Diffusion Coefficient in Diffusion Couple of U-Mo/Nb
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國(guó)家自然科學(xué)基金“國(guó)家杰出青年基金”(50471011)

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    摘要:

    采用包覆熱軋法制備了U-Mo/Nb固相復(fù)合擴(kuò)散偶。分別在760和790 ℃下對(duì)U-Mo/Nb固相復(fù)合擴(kuò)散偶進(jìn)行了不同時(shí)間的擴(kuò)散熱處理。用能譜法(EDS)測(cè)定了擴(kuò)散偶中主要元素在一維擴(kuò)散方向上的分布；根據(jù)實(shí)驗(yàn)初邊界條件建立了U-Mo/Nb的半無(wú)限長(zhǎng)擴(kuò)散偶模型，并用誤差函數(shù)法獲得了擴(kuò)散方程的解析式。通過(guò)實(shí)驗(yàn)數(shù)據(jù)計(jì)算得到UMo合金中U元素在Nb基體中的擴(kuò)散系數(shù)。結(jié)合實(shí)驗(yàn)方法分析認(rèn)為計(jì)算結(jié)果基本合理

    Abstract:

    Solid bonding diffusion couples of U-Mo/Nb were prepared by coating and hot rolling. The diffusion couples were heat-treated at 760 oC and 790 oC for different time. The distribution of the main diffusion elements in linear dimension was measured by Energy Dispersive Spectrometer (EDS). The model of diffusion in semi-infinite media was established according to the experiment’s initial boundary conditions. Error function solutions of the diffusion equation were also presented. The diffusion coefficient of uranium diffused in Nb base metal was calculated with the experimental data. The calculation result is considered to be correct by analyzing the method of experiment

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龐曉軒,尹昌耕,陳建剛,孫長(zhǎng)龍,劉云明,劉婷婷. U-Mo/Nb擴(kuò)散偶中擴(kuò)散系數(shù)的測(cè)定[J].稀有金屬材料與工程,2010,39(12):2196~2198.[Pang Xiaoxuan, Yin Changgeng, Chen Jiangang, Sun Changlong, Liu Yunming, Liu Tingting. Measurement of Diffusion Coefficient in Diffusion Couple of U-Mo/Nb[J]. Rare Metal Materials and Engineering,2010,39(12):2196~2198.]
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  • 收稿日期:2009-12-05
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