(1. 浙江大學 材料科學與工程學系，杭州 310027；
2. 浙江大學 綠色建材與應用技術工程研究中心，杭州 310027；
3. 溫州市康爾微晶器皿有限公司，溫州 325802)
摘 要: 以Li2O-Al2O3-SiO2(鋰鋁硅)微晶玻璃為研究對象，采用DTA、XRD、IR和SEM等測試技術研究含Fe2O3、Co2O3、Ni2O3鋰鋁硅玻璃的析晶動力學和晶化過程，分析著色劑成分Co2O3、Ni2O3對鋰鋁硅玻璃晶化過程及結構的影響機制。結果表明：著色劑成分不僅決定鋰鋁硅微晶玻璃的著色度，而且還影響鋰鋁硅玻璃的析晶過程和顯微結構；著色劑的加入可提高鋰鋁硅玻璃的析晶溫度，但降低析晶動力學參數(shù)，且高Co2O3含量的降幅大于高Ni2O3含量的。著色劑對鋰鋁硅玻璃析晶能力的影響主要與著色離子的離子半徑、電場強度及對斷裂硅氧四面體聯(lián)結能力有關。
關鍵字: 微晶玻璃；鋰鋁硅酸鹽；著色劑；析晶動力學
lithium aluminosilcate glass containing Co, Ni and Fe
CHEN Ming-xing3, XIANG Yan-hang3
（1. Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China;
2. Green Constructional Materials and Applied Technology Engineering Research Center, Zhejiang
University, Hangzhou 310027, China;
3. Wenzhou Kanger Crystalline Vessel Limited Company, Wenzhou 325802, China）
Abstract:The crystallization process and kinetics of Li2O-Al2O3-SiO2 (LAS) glass ceramic containing colouring agent such as Fe2O3, Co2O3 and Ni2O3 were investigated using differential thermal analysis, X-ray diffractometry, infrared and scanning electron microscope, and the effects of Co2O3 and Ni2O3 on the crystallization mechanism of LAS glass were analyzed. The results show that the colouring agent not only changes the colority of LAS glass and also affects the crystallization process and microstructure of LAS glass. The addition of colouring agent increases the crystallization temperature of LAS glass and decreases the crystallization mechanism parameter, and the effect of Co2O3 on the crystallization mechanism is much more than that of Ni2O3. The effect mechanism of colouring agent on the crystallization of LAS glass is related to the ion radius, field energy of colouring ions and their connection to the broke SiO4.
Key words: glass ceramic; lithium aluminosilicate; colouring agent; crystallization kinetics
