Microstructural evolution of intermetallic phase precipitates in Cr-coated Zirconium alloy cladding in high-temperature steam oxidation up to 1400 °C

被引：3

作者：

Mohamad, Afiqa ^{[1
]}

Nemoto, Yoshiyuki ^{[1
]}

Furumoto, Kenichiro ^{[2
]}

Okada, Yuji ^{[2
]}

Sato, Daiki ^{[2
]}

机构：

[1] Japan Atom Energy Agcy, Nucl Sci & Engn Ctr, Tokai, Ibaraki, Japan

[2] Mitsubishi Heavy Ind Co Ltd, Tokyo, Hyogo, Japan

来源：

CORROSION SCIENCE | 2023年 / 224卷

关键词：

Accident tolerant fuel; Cr coating; Oxidation; Intermetallic phase; Severe accident; WATER-VAPOR; ZIRCALOY-4; CORROSION; CHROMIUM; KINETICS; GROWTH; IRON;

D O I：

10.1016/j.corsci.2023.111540

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The steam oxidation on the Cr-coated Zry cladding was studied up to 1400 degrees C to understand the oxidation behavior under the accidental conditions. The double-sided oxidation test showed that Cr coating can protect Zry cladding till 1200 degrees C/5 min. However, at T >= 1300 degrees C/5 min, Cr coating can no longer protect Zry cladding and the intermetallic phase of the Zr(Cr, Fe)2 phase that precipitated within the Zry formed as globule microstruc-tures. In addition, the transition of the intermetallic phase within the Zry substrate from the solid to liquid phases was observed, where it was determined at 1400 degrees C/30 min within the ZrO2 phase.

引用

页数：15

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