Tohoku University Technology: Non-contact & non-destructive inspection method for thermal barrier coating: T05-286
Degradation evaluation of ceramic thermal barrier coating for gas turbine thermal power plant by using few GHz microwave
This invention is about a non-contact & non-destructive inspection method for evaluating the degradation with the age of thermal barrier coating on heat resistant metallic material by using microwave. The formation and growth of thermally grown oxide (TGO) which is formed as a result of aging, is evaluated for ceramic coated element used in gas turbine thermal power generation, and the interfacial strength is indirectly evaluated. YSZ (top coat) is used in ceramic coating for gas turbine element, and MCrAlY alloy layer (bond coat) is inserted between the YSZ and the substrate (Ni-based superalloy) to increase delamination resistance. This element is known to form TGO on the bond coat as the material deteriorates, so the element life evaluation is possible by evaluating TGO.
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The revenue generated from technology transfer is reinvested into universities and researchers as new research funding, which is used to create further research outcomes. To ensure the smooth operation of this cycle, known as the "Intellectual Creation Cycle," we will actively promote technology transfer. The types of seeds we handle include patents, know-how, databases, and programs. We have established a collaborative framework by concluding basic technology transfer agreements with the following universities (as of June 1, 2025): - Tohoku University - Hirosaki University - Iwate University - Akita University - Fukushima University - Yamagata University - Tohoku Gakuin University - Iwate Medical University - Fukushima Medical University - Aizu University - Miyagi University - Hokkaido University - Muroran Institute of Technology - Showa Medical University
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