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Author:

周媛媛 (周媛媛.) | 宋晓艳 (宋晓艳.) (Scholars:宋晓艳) | 徐文武 (徐文武.) | 贺将韬 (贺将韬.)

Abstract:

建立了纳米晶合金的热力学性质随温度和晶粒尺寸变化的函数关系。通过计算分析Li_2C_2纳米晶合金的吉布斯自由能随温度和晶粒尺寸的变化,研究了其相稳定性和相变特征。模型预测结果显示,当晶粒尺寸减小到纳米尺度以下时,相变温度均低于粗晶块体材料的相变湍度,且随晶粒尺寸的减小而进一步降低。在室温下(300K),当晶粒尺寸减小至~25nm时,高温稳定相β-Li_2C_2才能被尺寸效应稳定化。

Keyword:

纳米热力学 相稳定性 纳米晶Li_2C_2

Author Community:

  • [ 1 ] 北京工业大学材料科学与工程学院

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Source :

Year: 2012

Language: Chinese

Cited Count:

WoS CC Cited Count: 0

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 14

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