锂辉石陶瓷的制备与抗热震性能  

Preparation and thermal shock resistance of spodumene ceramics

作　　者：李婷婷[1] 张四通 季家友[1] 黄志良[1] 鲍世聪[1] 陈常连[1] 

机构地区：[1]武汉工程大学材料科学与工程学院,湖北武汉430074 [2]湖南衡利丰陶瓷有限公司,湖南衡阳421200

出　　处：《武汉工程大学学报》2011年第7期91-97,共7页Journal of Wuhan Institute of Technology

基　　金：国家自然科学基金项目(NO.50874081和NO.50774055);湖北省教育厅重点科研项目(NO.D20101505)

摘　　要：采用常压烧结方式,利用Al2O3、SiO2和Li2CO3作原料,添加不同比例的3 Y-ZrO2制备了β-锂辉石陶瓷,通过XRD、SEM和热震测试等研究了其烧结温度、助剂添加量对样品物相组成、显微结构等的影响,进而用水淬法对样品的抗热震性能进行评价.结果表明：在1 325~1 400℃的烧结温度范围内皆可获以β-锂辉石主晶相为主的锂辉石陶瓷,ZrO2颗粒的弥散分布有利于提高材料的抗热震性能,900℃到室温的水淬实验表明锂辉石陶瓷具有优良的热震稳定性能.Using Al2O3,SiO2 and Li2CO3 as raw materials,β-spodumene ceramics were prepared by adding different ratio of 3 Y-ZrO2 and using pressureless sintering.Effect of sintering temperature and additive content on phase composition and microstructure was studied by XRD,SEM and the thermal shock resistance is evaluated by water quench method.Results showed that the main phase of all samples sintered at 1 325-1 400 ℃ is β-spodumene.ZrO2 dispersion is beneficial to enhance the thermal shock resistance.Water quench tests from 900 ℃ to room temperature showed that spodumene ceramics embody excellent thermal shock stability.

关 键 词：常压烧结 β-锂辉石陶瓷 ZRO2 抗热震性能 

分 类 号：TQ174.1[化学工程—陶瓷工业]