摘要
本文以氧化铝、堇青石、镁铝尖晶石作为主要原材料,选择Y2O_(3)、TiO_(2)、MnO_(2)以及ZnCO_(3)等添加剂作为烧结助剂,采用常压烧结方法在不同烧结温度(1500℃、1550℃、1600℃)下制备氧化铝-堇青石-镁铝尖晶石复相陶瓷。主要研究烧结温度与烧结助剂等条件对氧化铝基复相陶瓷的理化性能及其显微结构的影响。结果表明:在烧结温度为1550℃的条件下,配方4陶瓷样品的综合性能更好,其体积密度为3.68 g/cm^(3),气孔率为0.48%,抗折强度达到218.5 MPa。该陶瓷样品总体上显微结构更为致密,仅存在较小而稀疏的气孔,说明氧化铝基复相陶瓷有更高的致密度和更好的力学强度。
Alumina-cordierite-magnesia-alumina spinel multiphase ceramics were prepared by ambient pressure sintering at different sintering temperatures(1500℃,1550℃,1600℃)using alumina,cordierite,and magnesia-alumina spinel as the main raw materials,and selecting Y2O_(3),TiO_(2),MnO_(2),and ZnCO_(3) as additives for sintering aids.The effects of sintering temperature and sintering additive on the physicochemical properties and microstructure of alumina-based multiphase ceramics were investigated.The results showed that the ceramic sample with formula 4 had better comprehensive properties at a sintering temperature of 1550℃,with a bulk density of 3.68g/cm^(3),a porosity of 0.48%,and a flexural strength of 218.5MPa.The ceramic sample has a more compact microstructure overall,with only small and sparse pores,description alumina-based composite ceramic higher density and better mechanical strength.
作者
罗文伯
曹宇
胡继林
曾婷
陈都
董蛟鹏
陈占军
LUO Wenbo;CAO Yu;HU Jilin;ZENG Ting;CHEN Du;DONG Jiaopeng;CHEN Zhanjun(Modern Industry School of Advanced Ceramics,Hunan Provincial Key Laboratory of Fine Ceramics and Powder Materials,School of Materials and Environmental Engineering,Hunan University of Humanities,Science and Technology,Loudi Hunan 417000,China;School of Materials Science and Engineering,Jingdezhen Ceramic Institute,Jingdezhen Jiangxi 333403,China)
出处
《江西化工》
2025年第1期97-101,共5页
Jiangxi Chemical Industry
基金
湖南省重点研发计划项目(2021GK2015)
湖南省教育厅科学研究项目(23C0387)
湖南省大学生创新创业训练计划项目(湘教通[2024]191号-4886)。
关键词
氧化铝
复相陶瓷
烧结助剂
性能
抗折强度
显微结构
aluminum oxide
multiphase ceramics
sintering aids
performance
flexural strength
microstructure
