Lee Yeon Ju, Ha Juhee, Choi Su Ji, Kim Hyeok Il, Ryu Sumin, Kim Youngsoo, Youn Young-Sang
Department of Chemistry, Yeungnam University, Daehak-ro 280, Gyeongsan 38541, Gyeongbuk, Republic of Korea.
Materials (Basel). 2023 Sep 11;16(18):6164. doi: 10.3390/ma16186164.
Decreasing hydride-induced embrittlement of zirconium-based cladding is a significant challenge for the successful dry storage of spent nuclear fuel. Herein, to radically minimize hydride-induced embrittlement, we used nanoparticles as sacrificial agents with a greater affinity than zirconium for hydrogen. Corrosion experiments in the presence of gold (Au) and palladium (Pd) nanoparticles under simulated pressurized water reactor (PWR) conditions revealed that the hydrogen content of the zirconium samples was remarkably reduced, with a maximum decrease efficiency of 53.9% using 65 nm Au and 53.8% using 50 nm Pd nanoparticles. This approach provides an effective strategy for preventing hydride-induced embrittlement of zirconium-based cladding.
降低氢化物诱发的锆基包壳脆化是乏核燃料成功干式储存面临的一项重大挑战。在此，为了从根本上最大限度地减少氢化物诱发的脆化，我们使用了纳米颗粒作为牺牲剂，其对氢的亲和力比锆更大。在模拟压水堆（PWR）条件下，在金（Au）和钯（Pd）纳米颗粒存在的情况下进行的腐蚀实验表明，锆样品的氢含量显著降低，使用65 nm金纳米颗粒时最大降低效率为53.9%，使用50 nm钯纳米颗粒时为53.8%。该方法为防止锆基包壳氢化物诱发的脆化提供了一种有效策略。
