Mg^(2+)掺杂Li_4Ti_5O_(12)陶瓷靶材的制备及其性能研究  

Preparation and Properties of Mg^(2+)Doped Li_4Ti_5O_(12)Ceramic Targets

作　　者：董磊 王晨 刘欢 沈金城 赵江涛 杨海涛[1,2,3] 

机构地区：[1]深圳大学材料学院深圳市特种功能材料重点实验室,深圳518060 [2]深圳陶瓷制备先进技术工程实验室,深圳518060 [3]广东省功能材料界面工程技术研究中心,深圳518060

出　　处：《人工晶体学报》2018年第2期348-353,共6页Journal of Synthetic Crystals

基　　金：深圳市基础研究项目(JCYJ20160422144751573;JCYJ20160422104921235;JCYJ20140418181958489)

摘　　要：本实验以Mg(OH)_2作为镁源,将1wt%、2wt%、3wt%、4wt%、5wt%的Mg(OH)_2粉末与纯Li_4Ti_5O_(12)粉末球磨混合,使用粉末冶金的方法烧结制备出了Mg^(2+)掺杂的Li_4Ti_5O_(12)陶瓷靶材,分别研究了烧结温度为880℃、900℃、930℃、950℃、980℃时Mg^(2+)掺杂Li_4Ti_5O_(12)陶瓷靶材的收缩率、致密度和力学性能的变化情况;通过对Mg^(2+)掺杂Li_4Ti_5O_(12)陶瓷靶材进行XRD衍射分析和断面的SEM分析可以得出,Mg(OH)_2的最佳掺杂量为4wt%,陶瓷靶材的最佳烧结温度为950℃。可以得到抗弯强度为83.189 MPa、相对密度为96.041%、维氏硬度为的364.26HV500、物相单一的Mg^(2+)掺杂的Li_4Ti_5O_(12)陶瓷靶材。In this experiment, with Mg（ OH）2 as a source of Magnesium, the lwt%, 2wt%, 3wt%, 4wt%, 5wt% Mg（OH）2 powder is milled and mixed with a pure Li4TisO12 powder, Mg^2＋ doped Li4TisO12 ceramic target was prepared by the powder merallurgy. The shrinkage rate, density and mechanical properties of Mg^2＋ doped LiaTisO12 ceramic target was studied at 880 ℃ , 900 ℃ , 930 ℃ , 950 ℃ and 980 ℃. Through XRD diffraction analysis and cross section SEM analysis of the Mg^2＋ doped Li4Ti5O12 ceramic target it is shown that the best doping ratio is 4wt% and the best sintering temperature of Mg^2＋ doped Li4TisO12 ceramic target is 950 ℃, which has get the bending strength of 83. 189 MPa, the relative density of 96. 041% , Vivtorinox hardness is 364.26HVso0 and single phase Mg^2＋ doped Li4TisO12 ceramic target.

关 键 词：LI4TI5O12 粉末冶金 陶瓷靶材 掺杂 性能研究 

分 类 号：TQ172[化学工程—水泥工业]