Effect of cerium oxide on preparation of high-density sintered magnesia from crystal magnesite

被引:17
作者
Jin, Endong [1 ]
Yu, Jingkun [1 ,2 ]
Wen, Tianpeng [1 ]
Tian, Chen [1 ]
Liu, Zhaoyang [1 ]
Ma, Beiyue [1 ]
Yuan, Lei [2 ]
机构
[1] Northeastern Univ, Sch Met, Shenyang 110819, Peoples R China
[2] Northeastern Univ, State Key Lab Rolling & Automat, Shenyang 110819, Peoples R China
来源
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T | 2020年 / 9卷 / 05期
基金
中国国家自然科学基金;
关键词
Crystal magnesite; Cerium oxide; Bulk density; Sintered MgO; Solid solution reaction; MGO; FABRICATION;
D O I
10.1016/j.jmrt.2020.06.045
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Sintered MgO was prepared by using MgO powder with different particle sizes by calcination of by crystal magnesite as the raw material and CeO2 powder as an additive. In addition, the effect of the CeO2 addition on the performance of the sintered MgO was investigated. The results showed that (i) the densification of the sintered MgO with a small amount of CeO2 addition appreciably promoted, (ii) the maximum bulk density reached 3.48 g cm(-3), and (iii) the apparent porosity was 0.35%. In the sintering process, the Ca2+ could approach into CeO2 lattices, forming O-2- vacancy at CeO2 grains, which resulted in promoting the growth of CeO2 grains filling the pores between the MgO grains, and enhanced the densification of sintered MgO. In addition, the solid solution reaction limited the formation of silicate phase in MgO, improving the bonding degree between the MgO grains. (C) 2020 The Authors. Published by Elsevier B.V.
引用
收藏
页码:9824 / 9830
页数:7
相关论文
共 19 条
  • [1] GRAIN-GROWTH KINETICS IN ALUMINA-ZIRCONIA (CEZTA) COMPOSITES
    ALEXANDER, KB
    BECHER, PF
    WATERS, SB
    BLEIER, A
    [J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1994, 77 (04) : 939 - 946
  • [2] Sintering of magnesia: effect of additives
    Behera, Satyananda
    Sarkar, Ritwik
    [J]. BULLETIN OF MATERIALS SCIENCE, 2015, 38 (06) : 1499 - 1505
  • [3] Wheel-Set Hunting Movement and Its Contribution to Coupling Vibration of Vehicle-Bridge System
    Cheng, Q.
    Zhang, N.
    Xia, H.
    Zhang, T.
    Du, X. T.
    [J]. ADVANCES IN STRUCTURAL ENGINEERING, 2013, 16 (01) : 87 - 97
  • [4] Sintering of MgO-based refractories with added WO3
    Han, Bingqiang
    Li, Yousheng
    Guo, Chengcheng
    Li, Nan
    Chen, Fangyu
    [J]. CERAMICS INTERNATIONAL, 2007, 33 (08) : 1563 - 1567
  • [5] THE EFFECT OF THE MgO AGGREGATE SIZE ON THE DENSIFICATION OF SINTERED MgO
    Jin, Endong
    Yu, Jingkun
    Wen, Tianpeng
    Tian, Chen
    Liu, Zhaoyang
    Ma, Beiyue
    Yuan, Lei
    [J]. CERAMICS-SILIKATY, 2020, 64 (01) : 84 - 91
  • [6] Fabrication of high-density magnesia using vacuum compaction molding
    Jin, Endong
    Yu, Jingkun
    Wen, Tianpeng
    Hou, Xinghui
    Ma, Beiyue
    Mao, Feixiong
    [J]. CERAMICS INTERNATIONAL, 2018, 44 (06) : 6390 - 6394
  • [7] LI N, 1989, J MATER SCI, V24, P485, DOI 10.1007/BF01107431
  • [8] Wetting, spreading and corrosion behavior of molten slag on dense MgO and MgO-C refractory
    Liu, Zhaoyang
    Yuan, Lei
    Jin, Endong
    Yang, Xin
    Yu, Jingkun
    [J]. CERAMICS INTERNATIONAL, 2019, 45 (01) : 718 - 724
  • [9] Oxidation Resistance and Wetting Behavior of MgO-C Refractories: Effect of Carbon Content
    Liu, Zhaoyang
    Yu, Jingkun
    Yang, Xin
    Jin, Endong
    Yuan, Lei
    [J]. MATERIALS, 2018, 11 (06):
  • [10] PHASE-EQUILIBRIUM DIAGRAM OF TERNARY-SYSTEM CAO-MGO-CEO2 BETWEEN 1700-DEGREES AND 1200-DEGREES-C
    LONGO, V
    PODDA, L
    [J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1978, 61 (7-8) : 370 - 371