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Affiliation |
Graduate School of Engineering Science Cooperative Major in Sustainable Engineering |
SATO Yoshiyuki
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Graduating School 【 display / non-display 】
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1982.04-1986.03
Tohoku University Graduated
Graduate School 【 display / non-display 】
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1986.04-1988.03
Tohoku University Master's Degree Program Completed
Degree 【 display / non-display 】
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Hokkaido University - Doctor (Engineering)
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Tohoku University - Master of Engineering
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Tohoku University - Bachelor of Engineering
Campus Career 【 display / non-display 】
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2022.04-Now
Akita University Graduate School of Engineering Science Cooperative Major in Sustainable Engineering Associate Professor
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1998.07-2022.03
Akita University Faculty of Engineering Science Associate Professor
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1991.11-1998.06
Akita University Faculty of Engineering and Resource Science Research Assistant
Thesis for a degree 【 display / non-display 】
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Study on High Temperature Corrosion of Metals in Atmospheres Containing a Small Amount of Hydrogen Chloride
1997.03
Single author
Research Achievements 【 display / non-display 】
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High Temperature Corrosion of Ni-5, -8 and -10at%Al Alloys in Air with a Trace Amount of NaCl Vapor
Y. Sato, K. Kawabe, K. Sugawara, M. Hara
Journal of Japan Institute of Metals and Materials 91 ( 9 ) 441 - 446 2017.08 [Refereed]
Research paper (journal) Domestic Co-author
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Reducing Effect of a Slight Amount of NaCl Vapor on Pest Oxidation of Ta-75at%Al at High Temperature
Y. Sato, M. Hara
Oxidation of Metals 85 ( 1/2 ) 39 - 49 2016.02 [Refereed]
Research paper (journal) Domestic Co-author
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Influence of HCl in the Atmosphere on Hot Corrosion of Ni-Cr-Mo Alloy under a Coating of Molten NaCl-KCl-Na2SO4 "jointly worked"
Yasuhiro Oshima, Michihisa Fukumoto, Yoshiyuki SATO and Motoi Hara
Zairyo-to-Kankyo 53 ( 9 ) 451 - 458 2004.09 [Refereed]
Research paper (journal) Domestic Co-author
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Molten Salt Electrodeposition of Ni Aluminide Surface Layer and High Temperature Oxidation Resistance "jointly worked"
Michihisa Fukumoto, Motoi Hara, Yoshiyuki Sato, Toru Kidachi, Toshiro Nagataki
Jyournal of Japan Institute of Metals 66 ( 7 ) 684 - 689 2002.07 [Refereed]
Research paper (journal) Domestic Co-author
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High Temperature Corrosion of Ni-5, -8 and -10 at%Al Alloys in Air with a Trace Amount of NaCl Vapor
Sato Y., Kawabe K., Sugawara K., Hara M.
Journal of the Japan Institute of Metals and Materials ( The Japan Institute of Metals and Materials ) 81 ( 9 ) 441 - 446 2017
<p>High temperature corrosion of nickel aluminum alloys were investigated in air with a trace amount of NaCl vapor at 1273 K. Mass gains of Ni-5, -8 and -10 at%Al alloys were reduced in air with 7.2 ppm and 32.1 ppm NaCl vapor against those in air without NaCl vapor. Cross sectional investigation using SEM and EPMA revealed that there was a continuous Al<sub>2</sub>O<sub>3</sub> layer at the bottom of the scale when nickel aluminum alloys oxidized in air with NaCl vapor. That effect was obvious for Ni-10 at%Al and the slight tendency was recognized for Ni-8 at%Al. A mechanism of Al<sub>2</sub>O<sub>3</sub> protective layer formation with NaCl vapor was considered from the view point of thermodynamics. Under the oxygen potential of the atmosphere, Ni-Al alloy is oxidized into NiO. By the scale formation, oxygen potential gets down at the metal/scale interface maintaining the small chlorine potential induced by NaCl and O<sub>2</sub>, volatile AlCl<sub>3</sub> formation becomes dominant instead of NiO formation. This AlCl<sub>3</sub> is oxidized into Al<sub>2</sub>O<sub>3</sub> if oxygen potential rises even a little at the outer part of the scale. In those manners, protective alumina scale is considered to form on Ni-Al alloys in air with NaCl vapor, representing a relatively higher corrosion resistance than that in air without NaCl vapor.</p>
◆Original paper【 display / non-display 】
◆Other【 display / non-display 】
Presentations 【 display / non-display 】
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Thermodynamic Comparison in Corrosion Behavior of Ni-Al and Fe-Al Alloys in Oxygen with a Slight Amount of NaCl Vapor at 1273 K and 1123 K.
Yoshiyuki SATO, Kenta KAWABE, Tomoya KITSUBEZUKA and Motoi HARA
International Symposium on High-temperature Oxidation and Corrosion 2018 (Matsue, Shimane, Japan) 2018.10 - 2018.10 The Iron and Steel Institute of Japan