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Ogawa-Saito-He Lab
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The lab studies how materials degrade and fracture in order to support materials that last a long time at high temperatures.
AboutAbout the lab
Supporting the safety and reliability of materials through research.
The Ogawa-Saito-He Lab studies the safety and reliability of materials, and conducts research that leads to the development of materials that can be used for long periods at high temperatures.
Building ultra-high-efficiency gas turbines requires materials that withstand extremely high temperatures over long periods.
The lab is clarifying how nickel-based superalloys, thermal barrier coatings, and C/C composites deteriorate over the years.
By systematizing the physical chemistry of fracture, the lab aims to contribute to high-efficiency energy facilities and to lower environmental impact.
Key terms
- Thermal barrier coating
- A coating, mainly made of ceramics, that covers the surface of a component and prevents high-temperature heat from reaching its interior
- Cold spray
- A technology that forms a coating by spraying powder at high speed in the solid state, without melting it
- Nickel-based superalloy
- An alloy whose main component is nickel and whose strength does not easily decline even at high temperatures.
ResearchResearch themes
As a foundational technology for ultra-high-efficiency gas turbines, the lab pursues research on safety and reliability that leads to materials with long-term durability at ultra-high temperatures. It clarifies the mechanisms of aging degradation and damage in nickel-based superalloys, thermal barrier coatings, and C/C composites, and is systematizing the physical chemistry of fracture.
*Illustrative imageSurface modification by cold spray
In this technology, powder is accelerated at high speed and impacts the substrate in the solid state without melting, forming a coating while limiting the effects of heat. The lab works on forming corrosion-resistant coatings, repairing damaged components, and creating metallic coatings on CFRP that provide lightning-strike resistance.
*Illustrative imageStrength evaluation at ultra-small scales
Using a focused ion beam, the lab cuts out submicron-sized specimens and performs tensile tests on them. By measuring the strength of extremely small regions, it evaluates how damage occurs, the strength of grain boundaries, and the strength of bonded interfaces.
*Illustrative imageDevelopment of coatings for gas turbines
Raising the thermal efficiency of a gas turbine requires a higher combustion temperature, but the heat resistance of metal components has a limit. The lab investigates how thermal barrier coatings, which are mainly ceramic, deteriorate during long-term operation, with the aim of improving their durability.
MembersFaculty
The members of the Ogawa-Saito-He Lab are faculty, research fellows, administrative assistants, and doctoral, master's, and undergraduate students.As of 2026
- ProfessorKazuhiro Ogawa
- Assistant ProfessorHiroki Saito
- Assistant ProfessorLei He
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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: “Gas Turbine Blade” Pro-Per Energy Services / CC BY-SA 4.0 (cropped)
- Surface modification by cold spray: “FlameSpraying” Anmart / CC BY-SA 3.0 (cropped)
- Strength evaluation at ultra-small scales: “Scanning electron microscope - UFCH JH (2020) 01” Tadeáš Bednarz / CC BY-SA 4.0 (cropped)
- Development of coatings for gas turbines: “IGT Blades” Nabonaco / Public domain (cropped)
- Related lab (Ichikawa Lab): “CMF 56 exhaust system with plasma-sprayed thermal barrier” Ltosnar / CC BY 4.0 (cropped)
- Related lab (Adachi-Kuriyagawa Lab): “Friction-driven Encoder Test (encoder 01-CC)” International Gemini Observatory/NOIRLab/NSF/AURA / CC BY 4.0 (cropped)
- Related lab (Murashima Lab): “Diamond-like carbon coated cobalt ball” Drac2000 at English Wikipedia / CC BY-SA 3.0 (cropped)
- Related lab (Suzuki (Ken) Lab): “Ideenwelt EM2862 - Weight sensor - Strain gauge-91926” Raimond Spekking / CC BY-SA 4.0 (cropped)
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