A novel spray co-precipitation method to prepare nanocrystalline Y_2O_3 powders for transparent ceramics

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• 英文论文题名：A novel spray co-precipitation method to prepare nanocrystalline Y_2O_3 powders for transparent ceramics
• 论文作者：Zheng Li ; Tianyuan Zhou ; Shuai Wei ; Yue Ben ; Hao Yang ; Le Zhang ; Hao Chen
• 英文论文作者：Zheng Li ; Tianyuan Zhou ; Shuai Wei ; Yue Ben ; Hao Yang ; Le Zhang ; Hao Chen ; Jiangsu Key Laboratory of Advanced Laser Materials and Devices ; School of Physics and Electronic Engineering ; Jiangsu Normal University
• 年：2016
• 作者机构：Jiangsu Key Laboratory of Advanced Laser Materials and Devices,School of Physics and Electronic Engineering,Jiangsu Normal University;
• 英文论文关键词：spray co-precipitation method ; aging time ; Yttrium Oxide
• 会议召开时间：2016-07-28
• 会议录名称：2016中国功能新材料学术论坛论文集
• 语种：英文
• 分类号：TQ171.733
• 学会代码：ZGJS
• 会议名称：2016中国功能新材料学术论坛
• 会议地点：中国浙江宁波
• 主办单位：中国稀土学会固体科学与新材料专业委员会、中国金属学会功能材料分会、宁波市材料学会、宁波新材料产学研技术创新联盟
• 学会名称：中国金属学会
• 页数：1
• 文件大小：335k
• 原文格式：O
• 会议级别：全国

摘要

Yttrium Oxide(Y_2O_3) ceramics have various potential applications in high-temperature-resistance windows,host materials for solid state laser,refractories,components of semiconductor devices.However,the fabrication of Y_2O_3 transparent ceramics is considered to be very difficult because the internal pores are hard to be completely removed during the sintering process.The densification of transparent ceramics is significantly impacted by the purity,morphology,particle size and distribution,especially the agglomerate state of raw powders[1].Therefore,the most key technology for fabricating transparent ceramics should be the synthesis of raw powders with high sintering activity.We designeda spray co-precipitation methodused to synthesize nanocrystalline Y_2O_3 powders for transparent ceramics,the scheme of spray co-precipitationis shown in Fig.1.The properties of co-precipitated powders and the microstructure as well as optical properties of as-fabricated ceramics under different aging times were systematically investigated.The research showed that the aging time had only slight effect on the morphology,particle size,particles size distribution and agglomeration degree of Y_2O_3 powders.All Y_2O_3 powders calcined at 1250 ℃exhibited approximately spherical morphology with narrow distributionand the mean particle size was ~150 nm,shown in Fig.2.
Yttrium Oxide(Y_2O_3) ceramics have various potential applications in high-temperature-resistance windows,host materials for solid state laser,refractories,components of semiconductor devices.However,the fabrication of Y_2O_3 transparent ceramics is considered to be very difficult because the internal pores are hard to be completely removed during the sintering process.The densification of transparent ceramics is significantly impacted by the purity,morphology,particle size and distribution,especially the agglomerate state of raw powders[1].Therefore,the most key technology for fabricating transparent ceramics should be the synthesis of raw powders with high sintering activity.We designeda spray co-precipitation methodused to synthesize nanocrystalline Y_2O_3 powders for transparent ceramics,the scheme of spray co-precipitationis shown in Fig.1.The properties of co-precipitated powders and the microstructure as well as optical properties of as-fabricated ceramics under different aging times were systematically investigated.The research showed that the aging time had only slight effect on the morphology,particle size,particles size distribution and agglomeration degree of Y_2O_3 powders.All Y_2O_3 powders calcined at 1250 ℃exhibited approximately spherical morphology with narrow distributionand the mean particle size was ~150 nm,shown in Fig.2.

引文

[1]A.V.Ragulya,"Consolidation of ceramic nanopowders.Adv Appl Ceram,"Adv ApplCeram,107 118-34(2008)