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Language: korean

Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received February 6, 2011
Accepted February 28, 2011

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Thermal Plasma Spray Coating 법에 의해 코팅된 SOFC용 세라믹 연결재 특성 분석

Property Analysis of Ceramic Interconnect Prepared by Thermal Plasma Spray Coating Method for SOFC

박광연 피석훈¹ 이종원 이승복 임탁형^† 박석주 송락현 신동렬

Kwangyeon Park Seuk-Hoon Pi¹ Jong-Won Lee Seung-Bok Lee Tak-Hyoung Lim^† Seok-Joo Park Rak-Hyun Song Dong-Ryul Shin

한국에너지기술연구원 연료전지연구단, 305-343 대전시 유성구 장동 71-2 ¹KAIST 신소재공학과, 305-701 대전시 유성구 구성동 373-1

Fuel Cell Research Center, Korea Institute of Energy Research, 71-2, Jang-Dong, Yuseong-gu, Daejon 305-343, Korea ¹Dept. Mat. Sci. & Eng, KAIST, 373-1 Guseong-dong, Yuseong-gu, Daejeon 305-701, Korea

ddak@kier.re.kr

Korean Chemical Engineering Research, December 2011, 49(6), 710-714(5), NONE Epub 25 November 2011

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Abstract

본 연구에서는 열 플라스마 용사 코팅 법을 사용하여 고체산화물 연료전지에서 사용되는 La0.8Ca0.2CrO3(LCC), La0.8Sr0.2CrO3(LSC), La0.8Ca0.2Cr0.9Co0.1O3(LCCC) 세라믹 연결재를 코팅하여 코팅 층의 특성평가를 수행하였다. 열 플라즈마 코팅에 앞서 각 세라믹 연결재 입자의 특성평가를 위해 X선 회절, 미세 구조, 입자 측정 및 비표면적 분석을 수행하였다. 세라믹 연결재 입자의 특성평가 후, 열 플라스마 용사 코팅 법을 사용하여 연료극 지지체 위에 코팅하였으며, 코팅 층의 특성을 평가하기 위해 코팅 층의 표면, 파단면 분석, 가스 누출 속도 및 전기 전도도 측정을 수행하였다. 이러한 특성 평가 결과를 바탕으로 열 플라스마 용사 코팅 법을 통해 코팅된 LCCC 코팅 층이 고체산화물 연료전_x000D_ 지의 세라믹 연결재로서 적합함을 확인하였다.

In present work, La0.8Ca0.2CrO3(LCC), La0.8Sr0.2CrO3(LSC) and La0.8Ca0.2Cr0.9Co0.1O3(LCCC) ceramic interconnect layer for SOFC were prepared by using thermal plasma spray coating process. The LCC, LSC and LCCC powders were characterized by x-ray diffraction(XRD), scanning electron microscopy(SEM), particle counter and BET analysis. In addition, basic and essential properties such as the surface morphology, cross section, gas leak rate, and electrical conductivity of LCC, LSC, and LCCC layers coated by thermal plasma spray coating process were analyzed and discussed. Based on these experimental results, it can be concluded that the LCCC layer coated by thermal plasma spray coating process can be suitable as a ceramic interconnect of SOFC.

Keywords

Solid Oxide Fuel Cell Thermal Plasma Spray Coating Ceramic Interconnect LCCC

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