Kim, SG Hong, MZ Yoon, SP Han, JH Nam, SW Lim, TH Hong, SA 2024-01-21T08:05:08Z 2024-01-21T08:05:08Z 2021-09-03 2003-11 0928-0707 https://pubs.kist.re.kr/handle/201004/138120 The effect of heat-treatment conditions on the corrosion behavior of yttria stabilized zirconia (YSZ) coated AISI-type 316L stainless steels in molten carbonate are investigated. YSZ films on stainless steel were prepared by the sol-gel method. While the sample heat-treated at 800degreesC for 2 hours in air has an uneven surface microstructure with macrocracks, a YSZ coated sample heat-treated in argon has an even microstructure. The polarization resistance and corrosion rate of YSZ coated sample heat-treated in air were deteriorated from 6.948 Ohmcm(2) and 364.7 mpy (millimeter per year) to 3.291 Ohmcm(2) and 769.8 mpy, respectively, by the corrosion for 100 hours due to its poor surface microstructures. At the same experimental condition, meanwhile, those corrosion parameters of YSZ coated sample heat-treated in argon were 15.43 Ohmcm(2) and 164.2 mpy, respectively, and those were improved to 18.83 Ohmcm(2) and 134.6 mpy after the corrosion for 100 hours. This is attributed to the YSZ film with well developed surface microstructures. The concentration profiles of elements and X-ray diffractograms indicate that the oxide layer of YSZ coated sample heat-treated in argon had a triple layer structure composed of outer YSZ film, in between Fe2O3 layer, and inner chromium rich layer during corrosion. English KLUWER ACADEMIC PUBL FUEL-CELLS ZRO2 COATINGS PROTECTION PROSPECTS ISSUES FILMS Preparation of YSZ coated AISI-type 316L stainless steel by the sol-gel coating method and its corrosion behavior in molten carbonate Article 10.1023/A:1027466113372 1 JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY, v.28, no.3, pp.297 - 306 JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY 28 3 297 306 scie scopus 000186420400003 2-s2.0-1142293239 Materials Science, Ceramics Materials Science Article FUEL-CELLS ZRO2 COATINGS PROTECTION PROSPECTS ISSUES FILMS polymeric YSZ sol sol-gel spin coating molten carbonate fuel cell separator corrosion potentidynamic polarization