(中南大學(xué) 資源加工與生物工程學(xué)院無機(jī)材料研究所，長沙 410083)
摘 要: 基于Monte Carlo(MC)方法，根據(jù)晶粒生長機(jī)理建立改進(jìn)的轉(zhuǎn)換概率模型，在不同焙燒溫度、焙燒時(shí)間和激活能條件下可實(shí)現(xiàn)晶粒生長過程結(jié)構(gòu)演化的計(jì)算機(jī)模擬，對模擬和實(shí)驗(yàn)數(shù)據(jù)進(jìn)行分析，結(jié)果表明：當(dāng)晶粒生長指數(shù)為2.17時(shí)，模擬與實(shí)驗(yàn)具有較好的一致性，從而得出焙燒過程晶粒的生長動(dòng)力學(xué)模型；該模型能夠較好地解釋焙燒過程晶粒的生長過程，對晶粒生長動(dòng)力學(xué)研究等具有一定的指導(dǎo)意義。
關(guān)鍵字: 晶粒生長；焙燒；Monte Carlo模擬
（Institute of Inorganic Materials, School of Resources Processing and Bioengineering, Central
South University, Changsha 410083, China）
Abstract:A new Monte Carlo model was presented according to the grain growth theory. Using this model the computer simulation of microstructure evolution of grain growth was carried out under the condition of different calcinating temperatures, calcinating time and activation energies, and the dynamic model of grain growth in calcination process was obtained. The statistical analysis reveals that the simulated results are in good agreement with the experiment ones when the grain growth exponent is 2.17. It indicates that the grain growth in calcinations progress can be well explained using this model, so the model is valuable to the experiment about grain growth kinetics.
Key words: grain growth; calcinations; Monte Carlo simulation
