[3J01-06] SiC 1

[3J05] R&D of anti-corrosion technology for full-ceramics reactor core

(5)Small specimen shear stress testing on ceramics coating

*Shaofan Lyu¹, Hirokazu Katsui², Hao Yu¹, Yasuki Okuno¹, Ryuta Kasada¹, Sosuke Kondo¹ (1. Tohoku University, 2. National Institute of Advanced Industrial Science and Technology)

Keywords:ceramics coating, shear strength, double notch test, ATF, cladding

Silicon carbide (SiC) have gained a great deal of attention as one of the next generation materials for core component in nuclear reactors due to its excellent properties in high-temperature. The corrosion of SiC is accelerated by irradiation in various coolants. To improve the corrosion resistance of SiC, the coated layer is believed to be essential. The Al₂O₃ is coated at SiC substrate to improve the corrosion resistance of SiC. In this study, double notched shear (DNS) testing is employed for evaluating the shear stress of each interface with two types of mullite fabricated under various conditions so as to optimize the coating system. The sample is irradiated by Silicon ion. irradiation-induced shear-stress modification is newly found.