Mechanistic study of incipient corrosion for nuclear grade lean-Cr FeCrAl alloys in a simulated PWR environment

Mechanistic study of incipient corrosion for nuclear grade lean-Cr FeCrAl alloys in a simulated PWR environment

This study systematically investigated the incipient corrosion behavior of Fe-13Cr-4.5Al (wt%) and lean-Cr (7–10 wt%) with 5Al (wt%) FeCrAl alloy with a timescale of 4 months under simulated PWR conditions (18.6 MPa and 360 °C) in an autoclave system. The corrosion induced two types of structure of...

Full description

Bibliographic Details
Main Authors: Zheng Qu, Chuiyi Meng, Juncheng Huang, Yuchang Mei, Yinmeng Zhang, Jiaojiao Ma, Wenguan Liu, Hui Wang, Xiujie He
Format: Article
Language:English
Published: Elsevier 2023-06-01
Series:Materials & Design
Subjects:
FeCrAl alloy
Accident-tolerant fuel
Corrosion
Simulated PWR environment
Online Access:http://www.sciencedirect.com/science/article/pii/S0264127523003635
Description
Summary:This study systematically investigated the incipient corrosion behavior of Fe-13Cr-4.5Al (wt%) and lean-Cr (7–10 wt%) with 5Al (wt%) FeCrAl alloy with a timescale of 4 months under simulated PWR conditions (18.6 MPa and 360 °C) in an autoclave system. The corrosion induced two types of structure of oxide scale. FeCrAl alloys corroded for 3 months exhibited a duplex structure containing outer oxide particles and an inner Cr-rich spinel. During the corrosion test lasting 3–4 months, a triplex structure containing outer oxide particles, an inner compact Cr-rich spinel layer, and a porous spinel layer was observed. Moreover, Cr enriched at the periphery of outer oxides, indicating the formation of FeCr2O4 spinel oxide.
ISSN:0264-1275

Similar Items