快速单向约束性生长超细晶体的新模型  

A NEW MODEL OF SPEEDY CONSTRAINED DIRECTIONAL GROWTH OF SUPERFINE CRYSTALS

作　　者：耿兴国[1] 傅恒志[1] 刘林[1] 王祖锦[1] 

机构地区：[1]西北工业大学国家凝固技术重点实验室,国际材料物理研究中心

出　　处：《材料研究学报》1996年第2期145-148,共4页Chinese Journal of Materials Research

基　　金：国家自然科学基金

摘　　要：用Ｇｉｂｂｓ－Ｔｈｏｍｓｏｎ曲率效应和数学处理改进枝晶列的Ｗａｒｒｅｎ－Ｌａｎｇｅｒ（ＷＬ）模型在验证了有效性和适用性后，将其应用于ＣＢｒ４－Ｘ透明模型合金的快速单向限制性生长中近绝对稳定性研究。In this paper, Warren-Langer's growth model of dendritic arrays has been modified in taking aCCount of Gibbs-Thomson effect and mathematical treatment. The modified warren-Langer's model (MWL) was examined at high growth rates, and was applied to a constrained directionally solidified transparent carbon-tetrabromide system at both low velocity and high velocity of near absolute stability limit. It is shown that the theoretical calculation using MWL model is in good consistance with the experiments.

关 键 词：快速单向限制性 超细晶体 晶体生长 WL模型 

分 类 号：O781[理学—晶体学]