Milling assisted synthesis of calcium zirconate CaZrO3

被引:12
|
作者
Kalinkin, A. M. [1 ]
Nevedomskii, V. N. [2 ]
Kalinkina, E. V. [1 ]
Balyakin, K. V. [1 ]
机构
[1] Russian Acad Sci, Kola Sci Ctr, Tananaev Inst Chem & Technol Rare Elements & Mine, Apatity 184209, Murmansk Region, Russia
[2] Russian Acad Sci, AF Ioffe Physicotech Inst, St Petersburg 194021, Russia
关键词
Calcium zirconate; Two-step synthesis; High-energy ball milling; Annealing; Nanocrystals; METASTABLE TETRAGONAL ZIRCONIA; MECHANOCHEMICAL PROCESSES; PHASE-TRANSFORMATION; COMMINUTING DEVICES; KINETICS; POWDER; TEMPERATURE; ACTIVATION; TRANSITION; MECHANISM;
D O I
10.1016/j.solidstatesciences.2014.06.002
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Monophase calcium zirconate (CaZrO3) has been prepared from the equimolar ZrO2 + CaCO3 mixture by two-step synthesis process. In the first step, mechanical treatment of the mixture is performed in an AGO-2 planetary ball mill. In the second step, the milled mixture is annealed to form calcium zirconate. High-energy ball milling of the (ZrO2+CaCO3) mixture results in decrease in the temperature of CaZrO3 formation during annealing at 950 degrees C. The enhancement of CaZrO3 synthesis is due to accumulation of excess energy by the reagents, decreasing the particle size and notable increase in the interphase area because of "smearing" of CaCO3 on ZrO2 particles during milling. Nanocrystalline calcium zirconate has been produced by controlling the annealing temperature and time. (C) 2014 Elsevier Masson SAS. All rights reserved.
引用
收藏
页码:91 / 96
页数:6
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