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壓力誘發(fā)結(jié)構(gòu)馳豫對(duì)Zr55Cu30Al10Ni5大塊非晶合金玻璃轉(zhuǎn)變的影響
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TG115.25

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國家自然科學(xué)基金資助(50271050)


Effect of Pressure-Induced Structural Relaxation on Glass Transition in Bulk Amorphous Zr55Cu30Al10Ni5
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    摘要:

    采用非等溫差熱掃描量熱分析方法，研究了壓力對(duì)Zr55Cu30Al10Ni5大塊非晶合金玻璃轉(zhuǎn)變的影響。用Kissinger方程計(jì)算其玻璃轉(zhuǎn)變的表觀激活能。實(shí)驗(yàn)表明：玻璃轉(zhuǎn)變與加熱速度有關(guān)，具有動(dòng)力學(xué)效應(yīng)。不同壓力下，大塊非晶合金在遠(yuǎn)低于玻璃轉(zhuǎn)變溫度等溫退火后，其玻璃轉(zhuǎn)變溫度和玻璃轉(zhuǎn)變表觀激活能均呈現(xiàn)出非單調(diào)的變化。

    Abstract:

    The effect of pressure annealing on the glass transition of bulk amorphous Zr55Cu30Al10Ni5 is studied by x-ray diffraction and differential scanning calorimeter (DSC). The apparent activation energy of the glass transition (Eg) was determined by the Kissinger method. The results show that the glass transition temperature and Eg of the specimens change nonlinearly with increase of the annealing pressure. The role of pressure on structural relaxation and the glass transition is discussed.

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佟振峰 邵躍鋒 王亞平 孫軍.壓力誘發(fā)結(jié)構(gòu)馳豫對(duì)Zr55Cu30Al10Ni5大塊非晶合金玻璃轉(zhuǎn)變的影響[J].稀有金屬材料與工程,2004,33(9):937~940.[Tong Zhenfeng, Shao Yuefeng, Wang Yaping, Sun Jun. Effect of Pressure-Induced Structural Relaxation on Glass Transition in Bulk Amorphous Zr55Cu30Al10Ni5[J]. Rare Metal Materials and Engineering,2004,33(9):937~940.]
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  • 最后修改日期:2003-05-20
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