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Hydrogen-Compatible Materials and Hydrogen Embrittlement Prevention Lab
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A materials strength lab that studies how hydrogen affects the strength of metallic materials.
AboutAbout the lab
Investigating how hydrogen affects the strength of metals
The Hydrogen-Compatible Materials and Fracture Science Lab conducts experimental research on material strength, focusing on how hydrogen affects the strength of metallic materials (hydrogen embrittlement).
The lab also studies the prevention of hydrogen embrittlement using impurities, as well as creep deformation in high-temperature hydrogen.
Prof. Kubota is affiliated with the International Institute for Carbon-Neutral Energy Research, and conducts research with mechanical engineering students in a lab set up in both the undergraduate Department of Mechanical Engineering and the graduate Department of Mechanical Engineering.
For bachelor's and master's theses, the lab respects students' independence and designs research so that they gain a broad range of skills, including building electric circuits and programming, machining test specimens, and presenting results.
Key terms
- Hydrogen embrittlement
- A phenomenon in which a metallic material becomes weaker or more prone to fracture than it originally was, because of the effect of hydrogen
- Fretting fatigue
- A phenomenon in which parts in contact rub against each other in tiny movements while under repeated loading, causing cracks to form and strength to drop
- Creep
- A phenomenon in which a metal under sustained force at high temperature gradually deforms over time
ResearchResearch themes
The lab studies fracture of materials, focusing on the effect of hydrogen on the strength of metallic materials. Main themes include the effects of impurities in hydrogen gas, material strength in high-temperature hydrogen, and fretting fatigue.
*Illustrative imageEffects of hydrogen on fatigue and fracture of metals
With fuel cell vehicles now on sale, the lab investigates the effect of hydrogen on material strength and its mechanisms, in order to make hydrogen easier to use by lowering equipment costs while maintaining safety. Some of this research is conducted jointly with companies.
*Illustrative imageFatigue limit in high-pressure hydrogen
The lab has developed equipment for determining the fatigue limit in high-pressure hydrogen, and uses it to study fatigue limits in hydrogen.
*Illustrative imageStrength of materials for hydrogen equipment used at high temperatures
The lab studies the strength of materials used in hydrogen-using equipment that operates at high temperatures, such as SOFCs and SOECs.
*Illustrative imageInitiation of fretting fatigue cracks
Fretting fatigue is one of the main factors in equipment design. The lab is studying cracks that start from the center of the contact area, in collaboration with companies.
MembersFaculty
- ProfessorMasanobu Kubota
VoicesStudent voices
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “CERAMIC CREEP TEST FIGURES AND SECTIONS - NARA - 17444514” Martin Brown / Public domain (cropped)
- Effects of hydrogen on fatigue and fracture of metals: “Fracture surface 3” Luciasauter / CC BY 4.0 (cropped)
- Fatigue limit in high-pressure hydrogen: “Pressure Vessel for Australia” Bernoullies / CC BY-SA 3.0 (cropped)
- Strength of materials for hydrogen equipment used at high temperatures: “Greg Glatzmaier determines the high-temperature thermal and mechanical stability of sealants used in a lab prototype of the integrated hydrogen sensor separator module” Dennis Schroeder, NREL / Public domain (cropped)
- Initiation of fretting fatigue cracks: “Bolted joint bridge” Thermos / CC BY-SA 3.0 (cropped)
- Related lab (〈金属疲労・破壊力学〉): “CR510 steel bridge 1922” Michigan State Highway Department / Public domain (cropped)
- Related lab (〈金属材料の
水素脆化〉): “Liquid hydrogen storage tank at Launch Pad 39B” TomFawls / CC BY-SA 3.0 (cropped) - Related lab
(〈水素環境下の 金属材料評価〉): “Hydrogen pipelines” EERE / Public domain (cropped) - Related lab (水素環境下の
金属材料評価 （PARK SUNGCHEOL） ): “Hydrogen filling station in Minato-ku 2” Syced / CC0 (cropped)
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