발간논문

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Vol.41, No.12, 916 ~ 923, 2003
Title
Corrosion Behaviors with the Variation of the Accumulated Annealing Parameters in New Zr-alloy for the Nuclear Fuel Claddings
김영화 Kim Yeong Hwa , 백종혁 Baeg Jong Hyeog , 정용환 Jeong Yong Hwan
Abstract
The effect of the accumulated annealing parameters on corrosion was investigated for the Zr-based alloy, whose Nb content was more than its solubility limit. From the corrosion tests, the corrosion resistance of the alloy decreased with the increase of the accumulated annealing parameter in all corrosion conditions. And it was observed that the size of the precipitates and the hydrogen pick-up fraction increased with increasing the accumulated parameter. The large precipitates induced the high corrosion rate because the large precipitates resulted in the early transformation of the oxide structure from t-ZrO₂ to m-ZrO₂ and oxide micro structure from columnar to equiaxed structure.
Key Words
Zr, Accumulated annealing parameters, Corrosion resistance
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