Effect of gadolinium addition on the corrosion behavior and oxide properties of titanium in boric acid solution at 50 °C

Hur, Do Haeng; Jeon, Soon-Hyeok; Han, Jeoh; Park, Sunyoung; Chun, Young-Bum

doi:10.1016/j.jmrt.2022.10.136

Cited by 10 publications

(1 citation statement)

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“…Gadolinium ( 155,157 Gd) boasts the highest thermal neutron absorption cross-section value compared with other nuclei. Furthermore, when considering thermal neutron crosssection values, 157 Gd boasts an exceptional advantage, presenting an approximately 60-fold increase (240,000 b) compared with boron ( 10 B) (3810 b) [12]. At an equivalent content, Gd exhibits a thermal neutron absorption capacity more than four times greater than that of 10 B, and it comes at a significantly reduced cost, ranging from 1/12 to 1/5 of 10 B [13].…”

Section: Introductionmentioning

confidence: 99%

Characterization of Various Stainless Steels Containing Gadolinium as Thermal Neutron Absorbing and Shielding Materials

Oh,

Ahn,

Jung

et al. 2023

Metals

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Developing next-generation thermal-neutron-shielding and -absorbing materials for the safe storage and transportation of spent nuclear fuel is a topic of active research in academia. Gadolinium (Gd) boasts superior neutron absorption capacity compared with other nuclei. Consequently, it has garnered significant attention as a potential replacement for boron in spent nuclear fuel (SNF) applications. In this study, the austenitic stainless steels 304 and 316 and the duplex stainless steel 5A were reinforced with 2 wt.% of gadolinium to explore their thermal-neutron-absorbing efficiency. Their properties were then compared with commercial-grade borated stainless steel, as per ASTM standard A887. After the inclusion of Gd, both the yield strength and ultimate tensile strength of the alloys slightly increased, which was attributed to the evenly distributed Gd intermetallics within the matrix. However, the elongation rate was reduced. The Charpy impact absorption energy also decreased. The influence of the Gd intermetallic was further explored by examining the fractography. While the corrosion resistance of the alloy slightly diminished after the addition of Gd, its neutron absorption capacity demonstrated superior performance, especially when the Gd content was equivalent to that of boron. Although most properties of the experimental alloy deteriorated after the Gd addition, they still outperformed commercial borated stainless steel, suggesting that this alloy might be a promising candidate for SNF applications.

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Section: Introductionmentioning

confidence: 99%