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STAFF and MEMBERS (in 2025)
Professor:
Takumi HARUNA (Ph.D.)
Department of Chemistry and Materials Engineering
Faculty of Chemistry, Materials and Bioengineering
E-mail: haruna (at) kansai-u.ac.jp
Assistant Professor:
Youhei HIROHATA (Ph.D.)
Department of Chemistry and Materials Engineering
Faculty of Chemistry, Materials and Bioengineering
E-mail: hirohata (at) kansai-u.ac.jp
Students:
Doctor (2nd): 1
Master (2nd): 2
Master (1st): 5
Undergraduate (4th) : 9
INTRODUCTION
Most of metallic materials are utilized in their specific environments without exception, and then they react with the environment. The reaction, termed as “corrosion”, is big issue in most of manufacture industries because metallic machines and device degrade to failure and be fractured by corrosion. Therefore, there are quite large social demands to prevent corrosion and to train the persons who have knowledge about corrosion.
Our laboratory, therefore, offers the education to you and make the investigation with you about science of corrosion and engineering of corrosion-prevention on the basis of electrochemistry. The followings are main research points of our laboratory:
- the development of new materials and films with high corrosion-resistance,
- the mitigation of environmental-assisted cracking various materials,
- the mechanism of the corrosion process for any systems, using sophisticated electrochemical and metallurgical techniques.
TOPICS
- Corrosion Resistance of Titanium-Magnesium Alloy in Weak Acid Solution Containing Fluoride Ions
- Correlation between amount of bound water and stability of passive film on Ti during passivation time in sulfuric acid solution
- Effect of additional element on hydrogen absorption for iron in acidic and neutral sulfate solutions
- Diffusion behavior of D2O in the corrosion product films on steels
- Atmospheric corrosion of stainless steel and aluminum at the point of thickness of solution layer
OUR PAPERS PUBLISHED RECENTLY (Only in English)
- T. Kawarasaki, Y. Sakakibara and T. Haruna:
Stability Evaluation of Platinum Electrode Potential in Low-temperature Liquid Ammonia
Mater. Trans., Vol.67, No.4 (2026)
https://doi.org/10.2320/matertrans.MT-C2025005 - T. Haruna, E. Uehata, S. Nishio and Y. Hirohata:
Pitting corrosion of SUS304 steel covered with agar film containing thiosulfate in chloride solution
ISIJ Int., Vol.65, No.10, pp. 1502–1509 (2025)
https://doi.org/10.2355/isijinternational.isijint-2025-078 - T. Haruna, D. Morihashi and Y. Hirohata:
The states and their amount of hydrogen absorbing super-elastic TiNi alloy,
Electrochimica Acta, Vol.506, No.12, #144992 (2024)
https://doi.org/10.1016/j.electacta.2024.144992 - T. Haruna, M. Imamura and Y. Hirohata:
Pitting Corrosion of Titanium Depending on the Properties of the Passive Film,
J. Electrochem. Soc., Vol.171, No.1, #011502 (2024)
https://doi.org/10.1149/1945-7111/ad1ace - T. Haruna, Y. Wang and J. Yamanishi:
Hydrogen Absorption into Fe Plates with Rust Layers Containing Various MgCl2 Amounts during Atmospheric Corrosion with Controlled Humidity,
ISIJ International, Vol. 61, No. 4, pp. 1179–1185 (2021)
https://doi.org/10.2355/isijinternational.ISIJINT-2020-502 - Y. Wang, J. Yamanishi and T. Haruna:
Effect of Humidity of Air on Hydrogen Absorption into Fe with Rust Layer Containing MgCl2 during Atmospheric Corrosion
ISIJ International, Vol. 61, No. 4, pp. 1143–1150 (2021)
https://doi.org/10.2355/isijinternational.ISIJINT-2020-426 - T. Haruna, Y. Shoji and Y. Hirohata:
Hydrogen absorption rate into Fe with rust layer containing NaCl during atmospheric corrosion in humidity-controlled air,
ISIJ International, Vol. 61 (2021), No. 4, pp. 1079–1084
https://doi.org/10.2355/isijinternational.ISIJINT-2020-018 - T. Haruna:
II. Fundamental Electrochemical Method for Corrosion: Corrosion Potential,
Corros. Eng., Vol.67, No.1, pp.1-8(2018) - Y. Yasuda, H. Abe, R. Matsubayashi, T. Maruyama and T. Haruna:
Corrosion Behavior of Lead-Free Copper Alloy Castings and Their Crystallized Substances of Cu2S and Bi,
Mater. Trans., Vol.58, No.12, pp.1679-1686(2017)
https://doi.org/10.2320/matertrans.M2017196 - T. Haruna, Y. Fujita, D. Morihashi and Y. Hirohata:
Environment-assisted cracking of super-elastic TiNi alloy depending on solution pH and electrochemical potential,
Mater. Sci. Forum, Vol.879, pp.709-713(2017)
https://doi.org/10.4028/www.scientific.net/MSF.879.709 - T. Haruna, Y. Fujita, D. Morihashi and Y.Hirohata:
Role of the electrochemical potential and solution pH to environment-assisted cracking of super-elastic TiNi alloy,
Mater. Trans., Vol.57, No.12, pp.2026-2032(2016)
https://doi.org/10.2320/matertrans.MI201511 - D. Morihashi, T. Irie, Y. Hirohata and T. Haruna,
Influence of concentrations of LiOH and Li2MoO4 on polarization curve of carbon steel in concentrated LiBr solutions,
Corros. Eng., Vol.65, No.6, pp.202-207(2016) - T. Haruna, K. Takeuchi, T. Kasahara and Y.Nii:
Effect of additional element on hydrogen absorption for iron in acidic and neutral sulfate solutions,
ISIJ International, Vol.56, No.3, pp.378-384(2016)
https://doi.org/10.2355/isijinternational.ISIJINT-2015-223 - T. Haruna and Y. Nii:
Effect of microstructural defects on hydrogen absorption for steels in acidic sulfate solution,
ISIJ International, Vol.56, No.3, pp.392-396(2016)
https://doi.org/10.2355/isijinternational.ISIJINT-2015-283 - T. Haruna, T. Ikeda, M. Miyazaki, A. Nishimoto and Y. Hirohata:
Correlation between Bound Water and Stability of Anodic Oxide Film on Aluminum,
Mater. Trans., Vol.56, No.12, pp.2000-2005(2015)
https://doi.org/10.2320/matertrans.L-M2015831 - T. Haruna, T. Yamamoto, Y. Miyairi, T. Shibata, N. Taniguchi, K. Sakamaki and H. Tachikawa:
Diffusion Behavior of D2O in the Film on Fe Oxidized at High Temperature in Air,
Corros. Eng., Vol.64, No.5, pp.162-169(2015) - T. Haruna, S. Ito, K. Kimoto and A. Nishimoto:
Correlation between amount of bound water and stability of passive film on Ti during passivation time in sulfuric acid solution,
J. Solid State Electrochem., Vol.19, No.12, pp.3589-3593(2015)
https://doi.org/10.1007/s10008-015-3037-y - T. Haruna:
Development and Advancement of Hydrogen Detection Techniques Employed in Research on Hydrogen Embrittlement,
Corros. Eng., Vol.63, No.3, 55-64(2014) - T. Haruna, D. Nishiwaki and M.Nishikawa:
Effect of Potential on Hydrogen Evolution during Pitting of Aluminum,
Mater. Sci. Forum, Vols.794-796, pp.107-111(2014)
https://doi.org/10.4028/www.scientific.net/MSF.794-796.107 - T. Haruna, D. Motoya, Y. Nakagawa, N. Yamashita and T. Oishi:
Corrosion Resistance of Titanium-Magnesium Alloy in Weak Acid Solution Containing Fluoride Ions,
Trans. Mater., Vol. 54, No. 2, pp. 143-148(2013)
https://doi.org/10.4028/www.scientific.net/MSF.794-796.107
ADDRESS
Department of Chemistry and Materials Engineering
Faculty of Chemistry, Materials and Bioengineering
Kansai University
3-3-35 Yamatecho, Suita, Osaka 564-8680, JAPAN