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electroplating process, the nucleation kinetics and the growth mechanism of the first metallic nuclei formed on the initial substrate are critical steps, which determine the physicochemical properties... been widely used to analyze the nucleation/growth of alloys[8, 26, 27]. In this model[19-23], the authors describe the kinetics of electrolytic phase formation at early stages when diffusion......
Thermodynamics and Kinetics of Calcium Sulphoaluminate郭惠玲,谢峻林Key Laboratory for Silicate Materials Science and Engineering of Ministry of Education, Wuhan University of Technology摘 要:The formation process of calcium suphoaluminate(C4A3S) was investigated by the X-ray diffraction technique and then the thermodynamics was analyzed, finally the kinetics......
界面反应-扩散混合控制模型下先共析铁素体生长动力学的模拟刘志远1,杨志刚1,李昭东1,刘振清1,张弛1(1.北京市清华大学材料科学与工程系先进材料教育部重点实验室)摘 要:建立了界面反应-扩散混合控制模型用于描述先共析铁素体的台阶生长过程.考虑C原子长程扩散和界面反应对铁素体生长的共同控制作用,建立了混合控制机制下先共析铁素体生长动力学的理论模型.运用该模型对先共析铁素体的台阶生长过程进行了模拟,提出了决定先共析铁素体生长机制的控制因子S.S因子包含了碳扩散,界面迁移,相变温度以及成分的作用.通过该因子可判别是......
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the critical value, the growth velocity decreases with the increases of it. During a variety of degree of supercooling, the growth velocity is under control from thermal diffusion to kinetics. Under the control of thermal diffusion, the growth velocity increases with the increase of degree of supercooling and tip radius R decreases with the increase of temperature. Under the control of kinetics......
. Anisotropic interface kinetics and tilted cells in unidirectional solidification[J]. Crystal Growth, 1986, 83: 560-571. [10] YU Y M, YANG G C, ZHOU D W. Determination of interface width value... 3D anisotropy simulation of dendrites growth with phase field method HOU Hua(侯 华)1, ZHAO Yu-hui(赵宇辉)2, NIU Xiao-feng(牛晓峰)1 1. College of Materials Science and Engineering, North University......
transformation with nucleation and growth stages, the kinetics model is mainly based on Avrami equation. Johnson-Mehl-Avrami model can be applied to characterizing a constant heating rate of non... Trans. Nonferrous Met. Soc. China 22(2012) 2087-2091 Microstructure evolution in cooling process of Al-Zn-Mg-Cu alloy and kinetics description ZHANG Yu-hua1, YANG Shu-cai1, JI Hong-zhi2 1......
. LIU Xin-wei, FENG Ya-li, LI Hao-ran, CAI Zhen-lei, YANG Zhi-chao. Effect of magnesium ion concentration on growth kinetics of Thiobacillus ferroxidans[J]. The Chinese Journal...-cheng. Study on the growth of Thiobacillus ferroxidan and precipitates in different mediums[J]. Biotechnology, 2006, 16(4): 70-73. Effect of manganese ion concentration on growth kinetics......
Synthesis and grain growth kinetics of in-situ FeAl matrix nanocomposites(Ⅰ): Mechanical alloying of Fe-Al-Ti-B composite powder REN Rong(任 榕), WU Yu-cheng(吴玉程), TANG Wen-ming(汤文明), WANG Feng... by mechanical alloying [J]. Mater Sci Eng A, 1997, 231: 72-79. [3] HUANG B, PEREZ R J, LAVERNIA E J. Grain growth of nanocrystalline Fe-Al alloys produced by cryomilling in liquid argon and nitrogen......
Spinodal分解浅介徐祖耀1(1.上海市上海交通大学材料科学与工程学院)摘 要:主要以经典理论,即二元合金spinodal分解的热力学判据:б2G/бC2<0为基础,简介spinodal分解的一般概念,理论和动力学.强调指出:spinodal分解的经典理论也面临由B inder等提出新概念的强烈挑战,即形核-长大机制与spinodal分解是连续变化的;以及Binder等思想的重要性.对spinodal一词的来源作简单的论述.关键词:Spinodal分解; 形核-长大; 相变; 热力学; ......