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三元液態(tài)合金Al85Ni10M5的比熱容
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O641

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國(guó)家自然科學(xué)基金資助(50301008)


Specific Heat of Ternary Liquid Al85Ni10M5 Alloys
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    摘要:

    利用差示掃描量熱儀測(cè)定了三元液態(tài)合金Al85Ni10M5(添加元素M包括Si,Mn,Ti和Ce)的比熱容。結(jié)果表明:在高溫處Al85Ni10M5液態(tài)合金的比熱容曲線上均有駝峰出現(xiàn),其位置隨添加元素的原子半徑的增大和電負(fù)性的減小而向高溫處偏移。而且更高溫度處,比熱容值出現(xiàn)線性下降趨勢(shì)。液態(tài)合金比熱容的變化規(guī)律充分說明了液態(tài)合金中具有微觀組織的不均勻性。

    Abstract:

    The specific heat capacity of ternary liquid Al85Ni10M5 alloys (addition elements M include Si, Mn, Ti and Ce) has been investigated using differential scanning calorimetry (DSC). Experimental results show that a hump occurs on the curve of specific heat capacity of Al85Ni10M5 alloys at elevated temperatures. The position of the hump shifts to a higher temperature with increasing atomic radius and decreasing electronegativity of addition elements. Furthermore, the specific heat capacity of ternary liquid Al85Ni10M5 alloys tends to descend at higher temperatures. The variation of specific heat capacity of liquid alloys with temperature shows that the micro-inhomogeneity exists in the liquid alloys.

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王艷 張忠華 王偉民 邊秀房.三元液態(tài)合金Al85Ni10M5的比熱容[J].稀有金屬材料與工程,2004,33(8):823~826.[Wang Yan, Zhang Zhonghua, Wang Weimin, Bian Xiufang. Specific Heat of Ternary Liquid Al85Ni10M5 Alloys[J]. Rare Metal Materials and Engineering,2004,33(8):823~826.]
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  • 最后修改日期:2002-12-30
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