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Ag/CuO復(fù)合材料反應(yīng)合成熱力學(xué)分析
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“973”計(jì)劃前期研究專項(xiàng)（2008CB617609）；國(guó)家自然科學(xué)基金（10462002，50361003）；云南省自然科學(xué)基金重點(diǎn)項(xiàng)目（2006E003Z，2004E0004Z）；云南省自然科學(xué)基金（2008E028M）


Thermodynamics Analysis for Ag/CuO Composites by Reactive Synthesis
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    摘要:

    通過對(duì)Ag/CuO復(fù)合材料在反應(yīng)合成制備中各元素、亞金屬氧化物與1 mol氧氣反應(yīng)生成金屬氧化物的標(biāo)準(zhǔn)自由焓的熱力學(xué)計(jì)算，繪制了標(biāo)準(zhǔn)自由焓與溫度關(guān)系圖；考慮到氧壓力對(duì)反應(yīng)進(jìn)行有重要影響，在標(biāo)準(zhǔn)自由焓與溫度關(guān)系圖中繪制了氧壓力隨溫度變化的直線。結(jié)果表明：Ag與O2，Cu2O與O2的反應(yīng)是一種可逆反應(yīng)，其發(fā)生可逆轉(zhuǎn)變的溫度分別為586.818，667.663 K；氧的壓力對(duì)金屬氧化物的分解有重要影響：壓力越低，金屬氧化物越易分解；并通過熱力學(xué)分析結(jié)果，最終確定了Ag/CuO復(fù)合材料反應(yīng)合成燒結(jié)工藝。

    Abstract:

    Gibbs’ function of metal oxide from the reaction between elements as well as sub-metal oxides and 1 mol oxygen in Ag/CuO composites by reactive synthesis was calculated thermodynamically; through the calculation, the relation diagram was drawn for Gibbs’ function and temperature. Considering oxygen pressure influencing the reaction greatly, the oxygen pressure line with temperature change was also drawn in the diagram above. Results show that the reactions between Ag and O2, and Cu2O and O2 are reversible, whose temperature for reversible transition are 586.818 K and 667.663 K, respectively. The oxygen pressure is important for decomposition of metal oxides: the lower the oxygen pressure is, the more easily the oxides decompose. The reactive synthesis sintering technology of Ag/CuO composite was determined by thermodynamic analysis.

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周曉龍,曹建春,陳敬超,于 杰,杜 焰,杜曄平,張昆華,馮 晶. Ag/CuO復(fù)合材料反應(yīng)合成熱力學(xué)分析[J].稀有金屬材料與工程,2009,38(12):2111~2115.[Zhou Xiaolong, Cao Jianchun, Chen Jingchao, Yu Jie, Du Yan, Du Yeping, Zhang Kunhua, Fen Jing. Thermodynamics Analysis for Ag/CuO Composites by Reactive Synthesis[J]. Rare Metal Materials and Engineering,2009,38(12):2111~2115.]
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  • 收稿日期:2008-11-20
  • 最后修改日期:2009-07-13
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