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Materials 2019, 12(6), 848; https://doi.org/10.3390/ma12060848

Fabrication of Lanthanum Strontium Manganite Ceramics via Agar Gel Casting and Solid State Sintering

1
Department of Molten Salt Chemistry and Engineering, and Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
2
University of Chinese Academy of Sciences, No.19(A) Yuquan Road, Shijingshan District, Beijing 100049, China
*
Authors to whom correspondence should be addressed.
Received: 14 February 2019 / Revised: 25 February 2019 / Accepted: 1 March 2019 / Published: 13 March 2019
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Abstract

Fabricating lanthanum strontium manganite (LSM) ceramics with certain shapes is important for the design and construction of high-temperature energy conversion and storage devices. Here, we describe a low-cost and environmentally friendly method for fabricating LSM ceramics via agar gel casting and high temperature sintering. This new approach uses temperature tuning to fabricate LSM gel bodies, not only by manufacturing in the secondary process but also by remolding and recycling during the gel casting process. The effect of the sintering temperature on the properties of LSM ceramics was investigated as well. As a result, the porosity and compressive strength of LSM ceramics sintered at 1000 °C are ~60% and 5.6 MPa, respectively. When the sintering temperature increases to 1200 °C, the porosity decreases to ~28%, whereas the compressive strength increases to 25 MPa, which is able to meet the requirement of cathode-supported SOFCs (solid oxide fuel cells). View Full-Text
Keywords: gel casting; lanthanum strontium manganite; agar; ceramic formation; solid state sintering; cathode-supported SOFCs gel casting; lanthanum strontium manganite; agar; ceramic formation; solid state sintering; cathode-supported SOFCs
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Zhang, S.; Peng, C.; Guan, C.; Xiao, G.; Wang, J. Fabrication of Lanthanum Strontium Manganite Ceramics via Agar Gel Casting and Solid State Sintering. Materials 2019, 12, 848.

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