Y2O3-MgO纳米复相红外透明陶瓷制备及其性能研究  

Fabrication of Infrared-Transparent Y2O3-MgO Nanocomposite Ceramic and Its Properties

作　　者：刘孟寅 张高峰[1] 王跃忠[1] 张彤[1] 李霄鹏 甘硕文 张荣实[1] 褚建华 Liu Mengyin;Zhang Gaofeng;Wang Yuezhong;Zhang Tong;Li Xiaopeng;Gan Shuowen;Zhang Rongshi;Chu Jianhua(Tianjin Key Laboratory of Optical Thin Film,Tianjin Jinhang Technical Physics Institute,Tianjin 300308,China;Zhangjiagang Huipu Optical Material Company,Suzhou 215628,China;Nankai University,Tianjin 300350,China)

机构地区：[1]天津津航技术物理研究所天津市薄膜光学重点实验室,天津300308 [2]张家港汇普光学材料有限公司,江苏苏州215628 [3]南开大学,天津300350

出　　处：《稀有金属材料与工程》2020年第2期718-722,共5页Rare Metal Materials and Engineering

基　　金：国家自然科学基金(51702231)。

摘　　要：以商用Y2O3、MgO纳米粉体为原料,通过球磨混合方法制备了不同Y2O3/MgO配比的Y2O3-MgO纳米复合粉体,使用X射线衍射、扫描电镜、能量色散谱等表征手段对制备粉体的晶体结构、形貌、成分以及均匀性进行了表征。然后采用热压烧结方法制备Y2O3-MgO复相红外透明陶瓷,使用红外光谱仪、维氏硬度计等测试设备对复相透明陶瓷的光学和力学性能进行了分析。重点研究了粉体配比、热压温度、保温和保压时间等关键制备参数对Y2O3-MgO复相红外透明陶瓷晶粒尺度、致密化程度、光学及力学性能的影响。并通过调控粉体制备工艺和热压烧结工艺,制备出了红外透过率达到~80%的Y2O3-MgO复相红外透明陶瓷。同时在Y2O3:Mg0=1:1时,该复相陶瓷的硬度达到了12.3 GPa。Y2O3-MgO nanocomposite powders with different Y2O3/MgO ratios were prepared by ball milling using commercial Y2O3,MgO powders as the starting materials.The crystal structure,morphology,and composition as well as its uniformity of the Y2O3-MgO nanocomposite powder were characterized by XRD,SEM,and EDS,respectively.And then the hot-pressing was used to prepare infrared-transparent Y2O3-MgO nanocomposite ceramic.The FTIR and Vickers hardness tester were used to reveal the optical and mechanical properties of the Y2O3-MgO nanocomposite ceramic with different preparation parameters.The effects of critical parameters such as powder ratio,hot-pressing temperature,holding time of temperature and pressure on the particle size,densification,and the optical and mechanical properties of the nanocomposite ceramic were also researched.Results show that the transmittance and hardness reach to 80%(6 μm) and 12.3 GPa,respectively,with optimal conditions(sintering at 1500℃/15 min with Y2O3:MgO=1:1).

关 键 词：透明陶瓷 Y2O3-MgO纳米复合相 热压烧结 光学性能 力学性能 

分 类 号：TQ174.758.11[化学工程—陶瓷工业]