2008-08-012024-05-17https://scholars.lib.ntu.edu.tw/handle/123456789/694246摘要：主導曲線模型是一個由一般化學動力學模型推導出來的普適性模型，不僅可以用來分析與預測化學反應，甚至連複雜的陶瓷燒結過程都可以適用。此模型不需要假設反應機制，也不需要等溫實驗條件，只需要至少三組實驗數據就可以分析得到反應的主導曲線。本計畫提議用此新方法來研究礦物的相變動力學，將可獲得全新的資訊；所選擇的是二氧化鈦系統，即奈米銳鈦礦至金紅石相變反應。雖然文獻中已有不少關於二氧化鈦的相變研究，但對於各相的穩定溫度範圍仍無定論。針對文獻中相變的實驗數據所做的初步可行性分析顯示，此模型可以擬合出相變的主導曲線。預期本計畫的研究成果可以增進對二氧化鈦系統相變之瞭解，並可推廣至其他礦物與材料之相變，開拓出新的研究領域。<br> Abstract: Master Curve Model (MCM) is a universal model derived from general chemical kinetic equation. The model can be used to analyze and predict not only chemical reactions, but also complicated ceramic sintering processes. One doesn’t need to assume a reaction mechanism, nor a constant temperature experimental condition, as long as having at least three sets of kinetic data, a best-fit master curve can be easily derived. We propose using the MCM to study the phase transformation of nanocrystalline anatase to rutile, and expect to acquire new information from the study. Although there are many studies of TiO2 phase transformation in literature, the stability fields of the three polymorphs, i.e., rutile, anatase and brookite, are still not well-defined. Based on our preliminary feasibility study, i.e., using MCM on the TiO2 phase transformation data from literature, we believe we can derive master curves successfully from this system. The results of this research may increase our understanding about TiO2 phase transformation, and may even open up a new research area in the study of phase transformation of minerals.主導曲線模型相變動力學銳鈦礦金紅石二氧化鈦Master Curve Model (MCM)phase transformationkineticsanataserutileTiO2.