The Behavior of Cr-coated Zry cladding under high-temperature steam oxidation

Mohamad, A. B. ; Furumoto, Kenichiro; Nemoto, Yoshiyuki ; Ioka, Ikuo ; Sato, Daiki*; Okada, Yuji*; Yamashita, Shinichiro ; Osaka, Masahiko

Chromium (Cr) coated zirconium (Zr) based alloy cladding is the promising material for a near term accident tolerant fuel (ATF). Cr-coated Zr based cladding was fabricated by sputtering technique and HT oxidation tests were conducted up to different high temperatures (1100 $^{circ}$ C to 1400 $^{circ}$ C). The present work aims to investigate the metallography of Cr-coated Zr cladding after HT steam test. The result showed Cr $_{2}$ O $_{3}$ layers were formed as a protective oxide layer at the outmost layer for all samples. However, Cr-Zr-Fe phases were observed In particular, the main phases observed in the cross-sectional area were Cr $_{2}$ O $_{3}$ , Cr, ZrO $_{2}$ , Cr-Zr, and Zr situated from outer to inner of the sample after HT test. The details of the microstructure and mechanism of these samples will be discussed in the presentation.

Language	:	English
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Meeting title	:	5th International Conference on NPP Plant Life Management (PLiM-5)
Held date	:	2022/11
Location (city)	:	Vienna
Location (country)	:	Austria
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Keywords	:	ATF; coated Zr alloy cladding; HT test; High Temperature
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Cooperating Institute	:	三菱原子燃料

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Registration No. : BB20220699
JAEA Abstracts No. :
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