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Author:

Sun Yuan (Sun Yuan.) | Qu Zhixue (Qu Zhixue.) | Feng Hanghang (Feng Hanghang.) | Liu Zhaocen (Liu Zhaocen.)

Indexed by:

EI SCIE CSCD

Abstract:

La2Mo2O9 is expected to have an extremely low thermal conductivity. However, the alpha-beta phase transition at 580 degrees C seriously affects its performance and applications. In this work, a series of La2-xGdxMo2O9 (x=0.0 similar to 0.5) solid solution was prepared by doping La2Mo2O9 with Gd2O3, and the effect of Gd3+ doping on the phase stability and thermal conductivity was investigated. The results show that the phase transition of La2Mo2O9 is effectively suppressed with the doping of Gd3+ ions. The samples show a beta-phase when x >= 0.2. Moreover, the thermal conductivity decreases firstly and then increases with the increase of doping content of Gd3+ ions, reaching a minimum value at x=0.2 at room temperature. The thermal conductivities of all samples are below 1 W/(m.K).

Keyword:

thermal conductivity La2-xGdxMo2O9 phase stability

Author Community:

  • [ 1 ] [Sun Yuan]Beijing Univ Technol, Coll Mat Sci & Engn, Beijing 100124, Peoples R China
  • [ 2 ] [Qu Zhixue]Beijing Univ Technol, Coll Mat Sci & Engn, Beijing 100124, Peoples R China
  • [ 3 ] [Feng Hanghang]Beijing Univ Technol, Coll Mat Sci & Engn, Beijing 100124, Peoples R China
  • [ 4 ] [Liu Zhaocen]Beijing Univ Technol, Coll Mat Sci & Engn, Beijing 100124, Peoples R China

Reprint Author's Address:

  • 瞿志学

    [Qu Zhixue]Beijing Univ Technol, Coll Mat Sci & Engn, Beijing 100124, Peoples R China

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Related Keywords:

Source :

RARE METAL MATERIALS AND ENGINEERING

ISSN: 1002-185X

Year: 2020

Issue: 2

Volume: 49

Page: 545-549

0 . 7 0 0

JCR@2022

ESI Discipline: MATERIALS SCIENCE;

ESI HC Threshold:169

Cited Count:

WoS CC Cited Count: 1

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 10

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