| Pt69.0Ni9.6P21.4合金的比热和Kauzmann温度 |
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| 引用本文： | 蒋青,徐晓亚,李建忱.Pt69.0Ni9.6P21.4合金的比热和Kauzmann温度[J].金属学报,1997,33(6):660-666. |
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| 作者姓名： | 蒋青 徐晓亚 李建忱 |
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| 作者单位： | 吉林工业大学!长春，130025 |
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| 基金项目： | 国家自然科学基金!59371006，霍英东教育基金!0401038 |
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| 摘 要： | 通过测量Ｐｔ６９．０Ｎｉ９．６Ｐ２１．４合金晶体和液体的比热函数和相应的熵函数，确定了该合金的Ｋａｕｚｍａｎｎ温度和反Ｋａｕｚｍａｎｎ温度，确定的Ｋａｕｚｍａｎｎ温度与根据Ｖｏｇｅｌ－Ｆｕｌｃｈｅｒ定律以及根据合金熔点计算的结果一致。在测量中，通过采用不同加热速度加热玻璃的方法扩大了过冷液体在玻璃转变温度附近比热的温度测量范围，由此增加了过冷液体的热力学函数的可靠性。
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| 关 键 词： | 比热 Kauzmann温度 铂镍磷合金 玻璃转变 |
| 收稿时间： | 1997-06-18 |
| 修稿时间： | 1997-06-18 |
SPECIFIC HEAT AND KAUZMANN TEMPERATURE OF PtNiP ALLOY |
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| JIANG Qing,XU Xiaoya,Li Jianchen.SPECIFIC HEAT AND KAUZMANN TEMPERATURE OF PtNiP ALLOY[J].Acta Metallurgica Sinica,1997,33(6):660-666. |
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| Authors: | JIANG Qing XU Xiaoya Li Jianchen |
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| Affiliation: | JIANG Qing,XU Xiaoya,Li Jianchen (Jilin University of Technology,Changchun) |
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| Abstract: | The Kauzmann temperature and the reverse Kauzmann temperature of thePt69.0Ni9.6P21.4 alloy are determined by use of the measured specific heat functions and thecorresponding entropy functions of the alloy. The obtained Kauzmann temperature is consistent to that calculated by Vogel-Fulcher law and by the melting points of the components ofthe alloy. During the measurements of the specific heat of the undercooled liquid, differentheating rates are utilized to enlarge the measuring temperature range nearby the glass transition temperature. Thus the reliability of the thermodynamic function of the undercooled liquid is increased. The possibility for the overheating of the crystal is studied by producing oxide films on the surface of the crystalline specimen. |
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| Keywords: | Pt_(69 0)Ni_(9 6)P_(21 4) alloy specific heat Kauzmann temperature |
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