Preparation and thermo-physical properties of La1-xNdxMgAl11O19 (x=0, 0.1, 0.2) ceramics

被引：29
|
作者：
Wang, Yuan-Hong [1 ]
Ouyang, Jia-Hu [1 ]
Liu, Zhan-Guo [1 ]
机构：
[1] Harbin Inst Technol, Dept Mat Sci, Inst Adv Ceram, Harbin 150001, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2009年 / 485卷 / 1-2期
关键词：
La1-xNdxMgAl11O19; Coprecipitation-calcination method; Thermal conductivity; Thermal expansion; BARRIER COATINGS; LANTHANUM HEXAALUMINATE; CONDUCTIVITY; OXIDES;
D O I：
10.1016/j.jallcom.2009.06.068
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
La1-xNdxMgAl11O19 (x = 0, 0.1, 0.2) ceramic powders were synthesized by chemical-coprecipitation and calcination method, and were then pressureless-sintered at 1700 degrees C for 10 h in air to fabricate dense bulk materials. La1-xNdxMgAl11O19 ceramics were characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD). The thermal expansion coefficients (TECs) and thermal diffusivity coefficients of La1-xNdxMgAl11O19 ceramics were studied with a high-temperature dilatometer and a laser flash diffusivity technique from room temperature up to 1200 degrees C. La1-xNdxMgAl11O19 (x = 0, 0.1, 0.2) ceramics exhibited a defect magnetoplumbite structure. The TECs of LaMgAl11O19 and La0.8Nd0.2MgAl11O19 are 8.49 x 10(-6) K-1 and 8.58 x 10(-6) K-1 at 1200 degrees C. respectively. The thermal conductivity of La1-xNdxMgAl11O19 (x = 0, 0.1, 0.2) ceramics locates in the range of 2.62-3.87 W m(-1) K-1 from room temperature to 1200 degrees C (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：734 / 738
页数：5
相关论文
共 50 条
  • [31] Structure and Electrical Properties of Li3-xSc2-xZrx(PO4)3 (x=0, 0.1, 0.2) Ceramics
    Orliukas, A. F.
    Salkus, T.
    Kezionis, A.
    Dindune, A.
    Kanepe, Z.
    Ronis, J.
    Bohnke, O.
    Venckute, V.
    Lelis, M.
    FERROELECTRICS, 2011, 418 : 34 - 44
  • [32] Influence of Ni content on structural, magnetocaloric and electrical properties in manganite La0.6Ba0.2Sr0.2Mn1-xNixO3 (0 ≤ x ≤ 0.1) type perovskites
    Dhahri, Ahmed
    Laifi, J.
    Gouadria, Soumaya
    Elhadi, M.
    Dhahri, E.
    Hlil, E. K.
    RSC ADVANCES, 2022, 12 (07) : 3935 - 3947
  • [33] Preparation, characterization and electrical conductivity studies of NdYb1-xGdxZr2O7 (0 ≤ x ≤ 1 0) ceramics
    Liu, Zhan-Guo
    Ouyang, Jia-Hu
    Sun, Ke-Ning
    Xia, Xiao-Liang
    ELECTROCHIMICA ACTA, 2010, 55 (28) : 8466 - 8470
  • [34] Effect of replacing Fe with Ti on the electrical and dielectric properties of orthoferrite La0.7Ga0.3Fe1-xTixO3(x=0, 0.1, 0.2, and 0.3)
    Ayachi, S.
    Hzez, W.
    Saadi, M.
    Rahmouni, H.
    Gassoumi, M.
    Khirouni, K.
    Alaya, S.
    PHASE TRANSITIONS, 2020, 93 (08) : 741 - 758
  • [35] Electrical Properties of Nanocrystalline Ce0.8Sm0.2O2-δ and Ce1-xGdxO2-δ (0.1 ≤ x ≤ 0.3) Ceramics for IT-SOFC
    Choi, J. W.
    Hwang, H. K.
    Nam, S. W.
    Park, K.
    JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, 2010, 10 (11) : 7684 - 7688
  • [36] Microstructure, mechanical and thermo-physical properties of hot-pressed Al2O3-GdAlO3-ZrO2 ceramics with eutectic composition
    Abdelkhalek Henniche
    Jiahu Ouyang
    Yonghui Ma
    Zhigang Wang
    Zhanguo Liu
    Yujin Wang
    Mehdi Derradji
    Xinyu Liu
    Progress in Natural Science:Materials International, 2017, 27 (04) : 491 - 497
  • [37] Effect of K doping on the physical properties of La0.65Ca0.35-xKxMnO3 (0≤x≤0.2) perovskite manganites
    Koubaa, M.
    Cheikhrouhou-Koubaa, W.
    Cheikhrouhou, A.
    JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 2009, 70 (02) : 326 - 333
  • [38] Effect of Phase Structure Evolution on Thermal Expansion and Toughness of (Nd1-xScx)2Zr2O7 (x=0, 0.025, 0.05, 0.075, 0.1) Ceramics
    Zhao, Xiaoxiang
    Guo, Lei
    Wang, Caimei
    Zhang, Yu
    Ye, Fuxing
    JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY, 2017, 33 (02) : 192 - 197
  • [39] Structural and optical properties of La and Gd substituted Bi4-xMxV2O11-δ (0.1≤x≤0.3)
    Thakur, Samita
    Devi, Malti
    Singh, K.
    IONICS, 2014, 20 (01) : 73 - 81
  • [40] Photoelectrical properties and the electronic structure of Tl1-xIn1-xSnxSe2 (x=0, 0.1, 0.2, 0.25) single crystalline alloys
    Davydyuk, G. E.
    Khyzhun, O. Y.
    Reshak, A. H.
    Kamarudin, H.
    Myronchuk, G. L.
    Danylchuk, S. P.
    Fedorchuk, A. O.
    Piskach, L. V.
    Mozolyuk, M. Yu
    Parasyuk, O. V.
    PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2013, 15 (18) : 6965 - 6972
12345