人工晶体学报2026，Vol.55Issue(1)：85-92,8.DOI:10.16553/j.cnki.issn1000-985x.2025.0174
两次热压烧结法制备镁铝尖晶石透明陶瓷的研究
Fabrication of Magnesium-Aluminate Spinel Transparent Ceramics by Two Cycles of Hot Pressing Sintering Method
摘要
Abstract
In this study,high-purity(99.999%)magnesium-aluminate spinel(MgAl2O4)powder was used to fabricate transparent magnesium-aluminate spinel ceramics through a two cycles of hot pressing sintering method combined with hot isostatic pressing(HIP).The first hot pressing was conducted at a relatively low temperature using a hot pressing mold,while the second hot pressing step was performed at a higher temperature without a mold.The morphology of the powder and the fracture surface of the ceramic samples were observed using SEM,and the optical transmittance of the ceramics were measured.Compared to conventional hot pressed transparent ceramics,the samples prepared by two cycles of hot pressing sintering exhibit slight differences in their fracture surface microstructure,while their transmittance remains comparable.The ceramics exhibit transmittance exceeding 80%over most wavelengths from visible to mid-wave infrared spectrum.The two cycles of hot pressing sintering method enables the production of larger transparent ceramics using relatively small hot pressing molds and equipment.关键词
镁铝尖晶石/透明陶瓷/两次热压烧结/热压模具/形貌/透过率/较大尺寸Key words
magnesium-aluminate spinel/transparent ceramics/two cycles of hot pressing sintering/hot pressing mold/morphology/optical transmittance/larger size分类
化学化工引用本文复制引用
雷牧云,王颖,凌昊,王海丽,李祯,张立生..两次热压烧结法制备镁铝尖晶石透明陶瓷的研究[J].人工晶体学报,2026,55(1):85-92,8.基金项目
国家重点研发计划(2022YFB3705900) （2022YFB3705900）
