Weight Change Mechanism of Lanthanum Strontium Manganite (LSM) During Thermal Cycles

被引：0

作者：

Zhong, Yu ^{[1
]}

Wang, Rui ^{[1
]}

Drozd, Vadym ^{[2
]}

Lowry, Dan ^{[3
]}

Sabarou, Hooman ^{[1
]}

Autul, Yashdi Saif ^{[1
]}

Pankaj, Sarin ^{[3
]}

机构：

[1] Worcester Polytech Inst, Mech & Mat Engn Dept, Worcester, MA 01609 USA

[2] Florida Int Univ, Ctr Study Matter Extreme Condit, Dept Mech & Mat Engn, Miami, FL 33199 USA

[3] Oklahoma State Univ, Mat Sci & Engn, Tulsa, OK 74106 USA

来源：

JOM | 2022年 / 74卷 / 12期

关键词：

OXYGEN STOICHIOMETRY; MAGNETIC-PROPERTIES; PHASE-BEHAVIOR; SR; EXPANSION; REDUCTION; LA1-XSRXMNO3+DELTA; NONSTOICHIOMETRY; PEROVSKITES; SHRINKAGE;

D O I：

10.1007/s11837-022-05535-2

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In the current work, the weight change behavior of (La0.8Sr0.2)(0.98)MnO3 +/- delta (LSM-20) from room temperature to 1100 degrees C during the thermal cycle experiments in dry air and Ar was comprehensively investigated with SDT, XRD analysis, and CALPHAD. Especially the quantitative Brouwer diagrams help in understanding the defect reactions inside LSM-20. The weight change was attributed mainly to the Schottky defect reaction. The relationship among weight change, molar change, defect reactions, chemical expansion, and phase transformation is discussed in detail. It is proposed that two very close rhombohedral LT and HT perovskites coexist in our thermal cycle temperature range. Also, the role of P(O-2) in the thermal cycle shrinkage is discussed.

引用

页码：4533 / 4543

页数：11

共 29 条

[1] Weight Change Mechanism of Lanthanum Strontium Manganite (LSM) During Thermal Cycles
Yu Zhong
Rui Wang
Vadym Drozd
Dan Lowry
Hooman Sabarou
Yashdi Saif Autul
Sarin Pankaj
JOM, 2022, 74 : 4533 - 4543
[2] Strontium doped lanthanum manganite (LSM) effects on electrochemical performance of LSM/MnO2 composites for supercapacitor
Jingbo Lv
Yaohui Zhang
Zhe Lv
Xiqiang Huang
Zhihong Wang
Xingbao Zhu
Bo Wei
Journal of Materials Science: Materials in Electronics, 2017, 28 : 17020 - 17025
[3] Strontium doped lanthanum manganite (LSM) effects on electrochemical performance of LSM/MnO2 composites for supercapacitor
Lv, Jingbo
Zhang, Yaohui
Lv, Zhe
Huang, Xiqiang
Wang, Zhihong
Zhu, Xingbao
Wei, Bo
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS, 2017, 28 (22) : 17020 - 17025
[4] The spillover of oxygen vacancies over strontium doped lanthanum manganite (LSM) cathode catalysts
Wang, SZ
Jiang, Y
Li, WZ
Yan, JW
SPILLOVER AND MIGRATION OF SURFACE SPECIES ON CATALYSTS, 1997, 112 : 401 - 410
[5] Characterization of porous lanthanum strontium manganite (LSM) and development of yttria stabilized zirconia (YSZ) coating
Sahu, A. K.
Ghosh, A.
Suri, A. K.
CERAMICS INTERNATIONAL, 2009, 35 (06) : 2493 - 2497
[6] Porous lanthanum strontium manganite coating layer prepared by DC thermal spray
Kang, HK
Lee, JH
METALS AND MATERIALS INTERNATIONAL, 2001, 7 (05): : 457 - 460
[7] Crystal structure and thermal expansion behavior of oxygen stoichiometric lanthanum strontium manganite at high temperature
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Hashimoto, Shin-Ichi
Sato, Kazuhisa
Yashiro, Keiji
Amezawa, Koji
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Kawada, Tatsuya
SOLID STATE IONICS, 2014, 256 : 83 - 88
[8] Impact of Chemical Composition of Strontium-doped Lanthanum Manganite Cathode on Microstructural Change and Performance During Long-term Operation of SOFCs
Matsui, Toshiaki
Mikami, Yuichi
Muroyama, Hiroki
Eguchi, Koichi
SOLID OXIDE FUEL CELLS 13 (SOFC-XIII), 2013, 57 (01): : 1683 - 1690
[9] Crystal structure, electrical conductivity, thermal expansion and compatibility studies of Co-substituted lanthanum strontium manganite system
Wandekar, R. V.
Wani, B. N.
Bharadwaj, S. R.
SOLID STATE SCIENCES, 2009, 11 (01) : 240 - 250
[10] Effect of strontium ion doping on structural, thermal, morphological and electrical properties of a co-doped lanthanum manganite system
Gupta, Ravindra K.
Kim, Eun Yi
Kim, Yoo Hang
Whang, Chin Myung
JOURNAL OF ALLOYS AND COMPOUNDS, 2010, 490 (1-2) : 56 - 61

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