Phase transformation and controllable size of γ-Al2O3 nanocrystals through Li doping using sol-gel method

被引：5
作者：
Zhao, Enming [1 ,2 ]
Bie, Wenyu [1 ,2 ]
Zhang, Jiazhen [1 ,2 ]
Liu, Diyou [1 ,2 ]
Sun, Zisong [1 ,2 ]
Liu, Lu [1 ,2 ]
机构：
[1] Harbin Engn Univ, Key Lab Fiber Integrated Opt, Minist Educ China, Harbin, Heilongjiang, Peoples R China
[2] Harbin Engn Univ, Sch Sci, Harbin, Heilongjiang, Peoples R China
来源：
PHASE TRANSITIONS | 2018年 / 91卷 / 11期
基金：
中国国家自然科学基金;
关键词：
Nanocrystalline materials; phase transformation; sol-gel preparation; Li doping; Al2O3; ALPHA-ALUMINA; TRANSITION; MORPHOLOGY; CONVERSION;
D O I：
10.1080/01411594.2018.1499912
中图分类号：
O7 [晶体学];
学科分类号：
0702 ; 070205 ; 0703 ; 080501 ;
摘要：
The effects of Li, as the additive', on the structures of nano-sized Al2O3 were investigated. Li evidently increased the crystallite size of -Al2O3, whereas it showed evident effects on neither LiAl2(OH)(7) precursors nor -Al2O3 nanocrystals. -Al2O3 and -Al2O3 co-existed in samples calcined at 1000 degrees C and 1100 degrees C, and the composition can be adjusted by altering Li concentration. When the calcination temperature reached 1200 degrees C, high purity of -phase Al2O3 formed and Li showed no effects. In addition, mechanisms of doping Li on the structrure of Al2O3 were discussed.
引用
收藏
页码：1129 / 1134
页数：6
相关论文
共 19 条
  • [1] Investigation of phase transition of γ-alumina to α-alumina via mechanical milling method
    Bodaghi, M.
    Mirhabibi, A. R.
    Zolfonun, H.
    Tahriri, M.
    Karimi, M.
    [J]. PHASE TRANSITIONS, 2008, 81 (06) : 571 - 580
  • [2] Effect of inorganic acid on the phase transformation of alumina
    Chen, Ruoyu
    Li, Yuanbing
    Zhao, Yi
    Li, Shujing
    Xiang, Ruofei
    Xu, Nana
    Liu, Fang
    [J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2017, 699 : 170 - 175
  • [3] Study of nanocrystalline γ-Al2O3 produced by high-pressure compaction
    Costa, TMH
    Gallas, MR
    Benvenutti, EV
    da Jornada, JAH
    [J]. JOURNAL OF PHYSICAL CHEMISTRY B, 1999, 103 (21) : 4278 - 4284
  • [4] Slag Resistance Mechanism of Lightweight Microporous Corundum Aggregate
    Fu, Lvping
    Gu, Huazhi
    Huang, Ao
    Zhang, Meijie
    Li, Zhengkun
    [J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2015, 98 (05) : 1658 - 1663
  • [5] Effects of foaming temperature on the preparation and microstructure of alumina foams
    Huang, Keke
    Li, Yuanbing
    Zhao, Yi
    Li, Shujing
    Li, Yawei
    Sang, Shaobai
    [J]. MATERIALS LETTERS, 2016, 165 : 19 - 21
  • [6] Sintering, mechanical and refractory properties of MA spinel prepared via co-precipitation and sol-gel techniques
    Khalil, N. M.
    Hassan, M. B.
    Ewais, E. M. M.
    Saleh, F. A.
    [J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2010, 496 (1-2) : 600 - 607
  • [7] Power dependence of upconversion luminescence of Er3+ doped Yttria nanocrystals and their bulk counterpart
    Liu, Lu
    Jiang, Haili
    Chen, Yujin
    Zhang, Xinlu
    Zhang, Zhenguo
    Wang, Yuxiao
    [J]. JOURNAL OF LUMINESCENCE, 2013, 143 : 423 - 431
  • [8] Phase transformation of ZrO2 nanocrystals induced by Li+
    Liu, Lu
    Li, Chunlei
    Chen, Yujin
    Zhang, Xinlu
    Li, Li
    Wang, Yuxiao
    [J]. MATERIALS LETTERS, 2012, 79 : 75 - 77
  • [9] Enhancing effect of Cl-2 atmosphere on transition aluminas transformation
    Lopasso, EM
    Gamboa, JJA
    Astigueta, JM
    Pasquevich, DM
    [J]. JOURNAL OF MATERIALS SCIENCE, 1997, 32 (12) : 3299 - 3304
  • [10] Size-controlled synthesis of nano α-alumina particles through the sol-gel method
    Mirjalili, F.
    Hasmaliza, M.
    Abdullah, L. Chuah
    [J]. CERAMICS INTERNATIONAL, 2010, 36 (04) : 1253 - 1257
12