首页 | 本学科首页   官方微博 | 高级检索  
     

材料相变过程中的形核理论
引用本文:张柯,刘峰,杨根仓,周尧和.材料相变过程中的形核理论[J].西安工业大学学报,2012,32(12):947-958.
作者姓名:张柯  刘峰  杨根仓  周尧和
作者单位:西北工业大学凝固技术国家重点实验室,西安,710072
基金项目:基金资助:国家自然科学基金项目(51071127,50901059);国家杰出青年科学基金(50125002);国家重点基础研究发展973计划(2011CB610403);111引智计划(B08040);凝固技术国家重点实验室自由研究基金(09-QZ-2008,24-TZ-2009)
摘    要:形核过程作为一级不连续相变中的重要阶段,对其研究具有重要的理论和应用价值.从经典理论的提出,到现今各种经典理论的修正以及非经典形核理论的建立,已有近一个世纪的时间.立足于对形核理论的理解,从热力学和动力学两个方面对相变中的形核理论进行了阐述,并对一些重要公式进行了重新推导和诠释;结合实际相变过程,对形核理论中仍存在的问题及可能的解决方法进行了探讨.

关 键 词:形核  团簇  经典形核理论  热力学  动力学

Nucleation Theories for Material Transformation Processes
Authors:ZHANG Ke  LIU Feng  YANG Gen-cang  ZHOU Yao-he
Affiliation:(State Key Laboratory of Solidification Processing, Northwestern Polytechnieal University, Xian 710072,China)
Abstract:It has both practical and theoretical meanings to investigate the nucleation, which is an important process during the first-order discontinuous phase transformation. It has been almost one century since the Classical Nucleation Theory (CNT) was built, and lots of modified CNT and Non- Classical Nucleation Theories (N-CNT) have been developed. On the bases of the understanding of varies nucleation theories,this paper illustrates the nucleation theories both on thermodynamics and kinetics, and re-derivates the basic equations of them. Some unsolved problems in the nucleation theories are also discussed combining with the practical phase transformation processes.
Keywords:nucleation  cluster  classical nucleation theory (CNT)  thermodynamics  kinetics
本文献已被 维普 万方数据 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号