Behavior of plasma sprayed Cr coatings and FeCrAl coatings on Zr fuel cladding under loss-of-coolant accident conditions

Yiding Wang; Wancheng Zhou; Qinlong Wen; Xingcui Ruan; Fa Luo; Guanghai Bai; Yuchang Qing; Dongmei Zhu; Zhibin Huang; Yanwei Zhang; Tong Liu; Rui Li

doi:10.1016/j.surfcoat.2018.03.016

Behavior of plasma sprayed Cr coatings and FeCrAl coatings on Zr fuel cladding under loss-of-coolant accident conditions

Yiding Wang, Wancheng Zhou, Qinlong Wen, Xingcui Ruan, Fa Luo, Guanghai Bai, Yuchang Qing, Dongmei Zhu, Zhibin Huang, Yanwei Zhang, Tong Liu, Rui Li

School of Materials Sience and Engineering

Research output: Contribution to journal › Article › peer-review

125 Scopus citations

Abstract

To fabricate the oxidation resistance accident tolerance fuel cladding, Cr layer and FeCrAl alloys were deposited on Zircaloy-4 using atmospheric plasma spraying technology. The specimens were exposed under a simulated loss-of-coolant accident condition. XRD, SEM and EDS techniques were carried out to explore their high temperature behavior. According to the analysis results, both Cr coating and FeCrAl coating were successfully prepared by atmospheric plasma spraying system. Cr coating had superior oxidation resistance. Compact Cr₂O₃ scale forming on Cr coating acted as an oxygen diffusion barrier, whereas FeCrAl coating degraded due to inter-diffusion, leading to its poor protection for the cladding. Difference in standard Gibbs free energy of formation of Fe and Zr caused the prior oxidation of Zr. Accordingly, Zr-rich and Zr-depleted zones occurred in FeCrAl-coated specimens.

Original language	English
Pages (from-to)	141-148
Number of pages	8
Journal	Surface and Coatings Technology
Volume	344
DOIs	https://doi.org/10.1016/j.surfcoat.2018.03.016
State	Published - 25 Jun 2018

Keywords

Accident tolerance fuel cladding
Cr coatings
FeCrAl coatings
Loss-of-coolant accident
Plasma spraying

Access to Document

10.1016/j.surfcoat.2018.03.016

Cite this

@article{bc679fc060ed4ccda498977eb9085492,

title = "Behavior of plasma sprayed Cr coatings and FeCrAl coatings on Zr fuel cladding under loss-of-coolant accident conditions",

abstract = "To fabricate the oxidation resistance accident tolerance fuel cladding, Cr layer and FeCrAl alloys were deposited on Zircaloy-4 using atmospheric plasma spraying technology. The specimens were exposed under a simulated loss-of-coolant accident condition. XRD, SEM and EDS techniques were carried out to explore their high temperature behavior. According to the analysis results, both Cr coating and FeCrAl coating were successfully prepared by atmospheric plasma spraying system. Cr coating had superior oxidation resistance. Compact Cr2O3 scale forming on Cr coating acted as an oxygen diffusion barrier, whereas FeCrAl coating degraded due to inter-diffusion, leading to its poor protection for the cladding. Difference in standard Gibbs free energy of formation of Fe and Zr caused the prior oxidation of Zr. Accordingly, Zr-rich and Zr-depleted zones occurred in FeCrAl-coated specimens.",

keywords = "Accident tolerance fuel cladding, Cr coatings, FeCrAl coatings, Loss-of-coolant accident, Plasma spraying",

author = "Yiding Wang and Wancheng Zhou and Qinlong Wen and Xingcui Ruan and Fa Luo and Guanghai Bai and Yuchang Qing and Dongmei Zhu and Zhibin Huang and Yanwei Zhang and Tong Liu and Rui Li",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier B.V.",

year = "2018",

month = jun,

day = "25",

doi = "10.1016/j.surfcoat.2018.03.016",

language = "英语",

volume = "344",

pages = "141--148",

journal = "Surface and Coatings Technology",

issn = "0257-8972",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Behavior of plasma sprayed Cr coatings and FeCrAl coatings on Zr fuel cladding under loss-of-coolant accident conditions

AU - Wang, Yiding

AU - Zhou, Wancheng

AU - Wen, Qinlong

AU - Ruan, Xingcui

AU - Luo, Fa

AU - Bai, Guanghai

AU - Qing, Yuchang

AU - Zhu, Dongmei

AU - Huang, Zhibin

AU - Zhang, Yanwei

AU - Liu, Tong

AU - Li, Rui

PY - 2018/6/25

Y1 - 2018/6/25

N2 - To fabricate the oxidation resistance accident tolerance fuel cladding, Cr layer and FeCrAl alloys were deposited on Zircaloy-4 using atmospheric plasma spraying technology. The specimens were exposed under a simulated loss-of-coolant accident condition. XRD, SEM and EDS techniques were carried out to explore their high temperature behavior. According to the analysis results, both Cr coating and FeCrAl coating were successfully prepared by atmospheric plasma spraying system. Cr coating had superior oxidation resistance. Compact Cr2O3 scale forming on Cr coating acted as an oxygen diffusion barrier, whereas FeCrAl coating degraded due to inter-diffusion, leading to its poor protection for the cladding. Difference in standard Gibbs free energy of formation of Fe and Zr caused the prior oxidation of Zr. Accordingly, Zr-rich and Zr-depleted zones occurred in FeCrAl-coated specimens.

AB - To fabricate the oxidation resistance accident tolerance fuel cladding, Cr layer and FeCrAl alloys were deposited on Zircaloy-4 using atmospheric plasma spraying technology. The specimens were exposed under a simulated loss-of-coolant accident condition. XRD, SEM and EDS techniques were carried out to explore their high temperature behavior. According to the analysis results, both Cr coating and FeCrAl coating were successfully prepared by atmospheric plasma spraying system. Cr coating had superior oxidation resistance. Compact Cr2O3 scale forming on Cr coating acted as an oxygen diffusion barrier, whereas FeCrAl coating degraded due to inter-diffusion, leading to its poor protection for the cladding. Difference in standard Gibbs free energy of formation of Fe and Zr caused the prior oxidation of Zr. Accordingly, Zr-rich and Zr-depleted zones occurred in FeCrAl-coated specimens.

KW - Accident tolerance fuel cladding

KW - Cr coatings

KW - FeCrAl coatings

KW - Loss-of-coolant accident

KW - Plasma spraying

UR - http://www.scopus.com/inward/record.url?scp=85043464614&partnerID=8YFLogxK

U2 - 10.1016/j.surfcoat.2018.03.016

DO - 10.1016/j.surfcoat.2018.03.016

M3 - 文章

AN - SCOPUS:85043464614

SN - 0257-8972

VL - 344

SP - 141

EP - 148

JO - Surface and Coatings Technology

JF - Surface and Coatings Technology

ER -

Behavior of plasma sprayed Cr coatings and FeCrAl coatings on Zr fuel cladding under loss-of-coolant accident conditions

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this