A program for a hydrogen production by using a high temperature nuclear heat has been launched in Korea since 2004. Iodine sulfur (IS) process is one of the promising processes for a hydrogen production because it does not generate carbon dioxide and a massive hydrogen production may be possible. However, the highly corrosive environment of the process is a barrier to its application in the industry. Therefore, corrosion behaviors of various materials were evaluated in sulfuric acid to select appropriate materials compatible with the IS process. The materials used in this work were Ni based alloys, Fe–Si alloys, Ta, Au, Pt, Zr, SiC, and so on. The test environments were boiling sulfuric acid without/with HI as an impurity and sulfuric acid. The surface morphologies and cross-sectional areas of the corroded materials were examined by using the scanning electron microscopy (SEM) equipped with energy dispersive X-ray spectroscopy (EDS). From the results of the weight loss and potentiodynamic experiments, it was found that a Si enriched oxide is attributable to a corrosion resistance for materials including Si in boiling sulfuric acid. Moreover, the passive Si enriched film thickness increased with the immersion time leading to an enhancement of the corrosion resistance. Corrosion behaviors of the material tested are discussed in terms of the chemical composition of the materials, the corrosion morphology, and the surface layer’s composition.
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July 2009
Research Papers
Corrosion of the Materials in Sulfuric Acid
Hong Pyo Kim,
Hong Pyo Kim
Korea Atomic Energy Research Institute (KAERI)
, 1045 Daedeok-daero, Yuseong-gu, Daejeon, 305-353, Korea
Search for other works by this author on:
Dong-Jin Kim,
e-mail: djink@kaeri.re.kr
Dong-Jin Kim
Korea Atomic Energy Research Institute (KAERI)
, 1045 Daedeok-daero, Yuseong-gu, Daejeon, 305-353, Korea
Search for other works by this author on:
Hyuk Chul Kwon,
Hyuk Chul Kwon
Korea Atomic Energy Research Institute (KAERI)
, 1045 Daedeok-daero, Yuseong-gu, Daejeon, 305-353, Korea
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Ji Yeon Park,
Ji Yeon Park
Korea Atomic Energy Research Institute (KAERI)
, 1045 Daedeok-daero, Yuseong-gu, Daejeon, 305-353, Korea
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Yong Wan Kim
Yong Wan Kim
Korea Atomic Energy Research Institute (KAERI)
, 1045 Daedeok-daero, Yuseong-gu, Daejeon, 305-353, Korea
Search for other works by this author on:
Hong Pyo Kim
Korea Atomic Energy Research Institute (KAERI)
, 1045 Daedeok-daero, Yuseong-gu, Daejeon, 305-353, Korea
Dong-Jin Kim
Korea Atomic Energy Research Institute (KAERI)
, 1045 Daedeok-daero, Yuseong-gu, Daejeon, 305-353, Koreae-mail: djink@kaeri.re.kr
Hyuk Chul Kwon
Korea Atomic Energy Research Institute (KAERI)
, 1045 Daedeok-daero, Yuseong-gu, Daejeon, 305-353, Korea
Ji Yeon Park
Korea Atomic Energy Research Institute (KAERI)
, 1045 Daedeok-daero, Yuseong-gu, Daejeon, 305-353, Korea
Yong Wan Kim
Korea Atomic Energy Research Institute (KAERI)
, 1045 Daedeok-daero, Yuseong-gu, Daejeon, 305-353, KoreaJ. Eng. Gas Turbines Power. Jul 2009, 131(4): 042904 (7 pages)
Published Online: April 16, 2009
Article history
Received:
October 22, 2008
Revised:
October 23, 2008
Published:
April 16, 2009
Citation
Kim, H. P., Kim, D., Kwon, H. C., Park, J. Y., and Kim, Y. W. (April 16, 2009). "Corrosion of the Materials in Sulfuric Acid." ASME. J. Eng. Gas Turbines Power. July 2009; 131(4): 042904. https://doi.org/10.1115/1.3095808
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