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Affiliation |
IWATE University Faculty of Science and Engineering Department of Physical Science and Materials Engineering Studies in Materials Science and Engineering |
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Position |
Research Associate |
SEKIMOTO Hidehiro
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Campus Career 【 display / non-display 】
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2016.04-Now
IWATE University Faculty of Science and Engineering Assistant Professor [Duty]
Course Subject 【 display / non-display 】
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2018
Basic Seminar for the first-year students
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2018
Materials Science and Engineering Laboratory Ⅰ
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2018
"Selected Topics in Physics
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2018
"Physics
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2018
Physics Laboratory
Published Papers 【 display / non-display 】
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Degradation of Glue in Lead Electrorefining
139 ( 1 ) 1 - 9 2023.01 [Refereed]
Academic Journal Multiple authorship
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Titanium Film Formation at the Interface between Liquid Rare Earth Metal and Molten Salt
Hidehiro Sekimoto, and Kenta Sato
Metallurgical and Materials Transactions B 52 2842 - 2846 2021.08 [Refereed]
Academic Journal Multiple authorship
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Production of Titanium Films via Segregation of Ce-Ti Alloy Coexisting with LiF-based Molten Salts
Takanori OSANAI, Hidehiro SEKIMOTO
Electrochemistry ( The Electrochemical Society of Japan ) 92 ( 4 ) 2024.04 [Refereed]
Bulletin of University, Institute, etc. Multiple authorship
Titanium (Ti) is widely desired in various industries because of its excellent properties. However, use of Ti is limited owing to the high costs associated with the extraction, melting, and rolling processes. In this study, we present a novel Ti film production process that does not require melting of Ti. To improve the practicality of the process, Ti films were formed through the reaction of Li2TiF6 with Ce and subsequent segregation in a Mo crucible. A Ti film with a thickness of 10 µm was obtained when 0.7 g of Li2TiF6 was added to 1.3 g of LiF molten salt on 8 g of liquid Ce in a Mo crucible, which reacted at 1000 °C for 9 h to form a Ce-Ti alloy. The alloy was maintained at 900 °C for 9 h to promote segregation. The thickness of the Ti film increased up to 90 µm when the segregation time was increased to 18 h, whereas an increase in the reaction time did not significantly affect the thickness of the Ti film. However, a decrease in the reaction time to 4.5 h inhibited the formation of the Ti film. When the Ce-Ti alloy with excess Ti at the bottom of the Mo crucible was segregated, a Ti film did not form on the Ce/molten salt interface. Furthermore, an increase in the amount of Li2TiF6 added to the molten LiF inhibited the formation of the Ti films as the Ce surface was covered with precipitates of CeOxFy. The mechanism of the formation of the Ti film via the segregation of the Ce-Ti alloy coexisting with LiF-based molten salts was explored based on these results.
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Refining of Low-Grade Copper by Electrolysis in Sulfamic Acid Media
Hidehiro Sekimoto, Tomohiro Sugawara, Kazuhisa Fuku
Journal of Japan Institute of Copper 59 336 - 342 2020.08 [Refereed]
Academic Journal Multiple authorship
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Effect of Aqueous Antimony Species on Corrosion of Pb-Sn-Ca Alloy in Copper Electrowinning
Hidehiro Sekimoto, Sou Sugawara, Jinnosuke Nosaka
Materials Transactions 61 ( 8 ) 1629 - 1637 2020.06 [Refereed]
Academic Journal Multiple authorship
Books 【 display / non-display 】
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Production of titanium thin film through the reaction at the interface between molten salt and liquid rare earth metal
2023.01
Report
Review Papers 【 display / non-display 】
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Recent progress with techniques for recovering rare earth elements from neodymium magnet
11 ( 1 ) 21 - 26 2016.02
In-House Magazine
Presentations 【 display / non-display 】
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Electrorefining of Low Grade Copper in Sulfamic Acid Media
Oral Presentation(General)
2019.08 -
Anodic Dissolution of Low Grade Copper Alloys in Sul-famic Acid Electrolyte
Oral Presentation(General)
2019.06 -
New separation technique of titanium and iron for titanium ore upgrading
Oral Presentation(General)
2015.08 -
Solubility Product of Antimony Arsenate and Bismuth Arsenate
Oral Presentation(General)
2013.12 -
Technique for Upgrading Ilmenite Ore via Trivalent Titanium Ion
Oral Presentation(General)
2013.06
Academic Awards Received 【 display / non-display 】
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2021.11.19
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Award for Encouragement of Research in Materials Science Symposium A-6
2012.09.28