摘要
Abstract
Low-expansion cordierite ceramics are functional ceramics with low expansion coefficient and excellent resistance to rapid cooling and heating.Due to their excellent thermal vibration resistance,they are widely used in various industries.This article uses cordierite,spodumene,and fired talc as the main raw materials to explore the effects of high alumina raw materials,pigments,sintering temperature,etc.on the expansion coefficient.The results show that low-expansion ce-ramic can be sintered at 1225℃for 50 minutes.When the addition amount of spodumene and cordierite in the blank formu-lation is 55％,the thermal expansion coefficient of the blank is 2.5×10-6/℃(40-600℃);increase the aluminum content in the green body,when the cordierite is used as the aluminum source to increase Al2O3 to 28％,the expansion coefficient of the green body can be further reduced to 2.07×10-6/℃(40-600℃);Adding different color materials to the green body,the expansion coefficient of the green body is slightly increased.关键词
低膨胀/陶瓷/堇青石/锂辉石Key words
Low expansion/Ceramics/Cordierite/Spodumene分类
化学工程
