An interesting oxidation-reduction phenomenon between the Zr(Cr,Fe)2 Laves phase and Cr2O3 under high temperature

被引：0

作者：

Wei, Kejian ^{[1
,2
,3
]}

Wei, Jiahong ^{[5
]}

Cao, Guoqin ^{[6
]}

Cheng, Gang ^{[1
,2
]}

Li, Weihua ^{[5
,7
]}

Hu, Junhua ^{[6
]}

Kano, Sho ^{[3
]}

Abe, Hiroaki ^{[3
,4
]}

机构：

[1] Henan Univ, Sch Nanosci & Mat Engn, Natl & Local Joint Engn Res Ctr High efficiency Di, Minist Educ,Key Lab Special Funct Mat, Kaifeng 475004, Peoples R China

[2] Henan Univ, Collaborat Innovat Ctr Nano Funct Mat & Applicat, Kaifeng 475004, Peoples R China

[3] Univ Tokyo, Nucl Profess Sch, Grad Sch Engn, 2-22 Shirakata Shirane, Tokai, Ibaraki 3191188, Japan

[4] Univ Tokyo, Grad Sch Engn, Dept Nucl Engn & Management, 7-3-1 Hongo Bunkyo Ku, Tokyo 1138656, Japan

[5] Henan Acad Sci, Zhengzhou 450002, Peoples R China

[6] Zhengzhou Univ, Sch Mat Sci & Engn, Zhengzhou 450001, Peoples R China

[7] North China Univ Water Resources & Elect Power, Zhengzhou 450046, Peoples R China

来源：

CORROSION SCIENCE | 2025年 / 246卷

关键词：

Oxidation-reduction phenomenon; Lattice oxygen transformation; Zr(Cr; Fe)2 Laves phase; ZIRCALOY-4; OXIDE; BEHAVIOR; ZR(FE; CR;

D O I：

10.1016/j.corsci.2025.112751

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Studying Zr(Cr, Fe)2 Laves phase oxidation is vital for deepening our understanding of the oxidation mechanism of accident tolerant fuel (ATF) Cr-coated Zr and Zr-based alloys. Here, an interesting oxidation phenomenon of Zr (Cr, Fe)2 Laves phase was confirmed for the first time. Meanwhile, this oxidation was accompanied by the Cr2O3 reduction. The lattice oxygen was transferred from Cr2O3 to Zr(Cr, Fe)2 Laves phases, and Cr2O3 was transformed into Cr while Zr(Cr, Fe)2 was oxidized into m-ZrO2, Cr and Fe. The reaction Gibbs Free energy (triangle rG Theta m) value is around-980 kJ/mol without considering Fe, which verifies the feasibility of this interesting oxidation-reduction phenomenon.

引用

页数：12

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