Cargando…

Hydrothermal Corrosion of SiC Coupons Suppressed by Magnetron Sputtered Cr Coatings

SiC-based components are sometimes susceptible to aqueous dissolution in LWR coolant environments. To address this issue, ~10 μm thick Cr coatings was deposited on reaction-bonded silicon carbide (RBSC) plates by magnetron sputtering. Corrosion behavior of Cr-coated SiC and -uncoated SiC coupons was...

Descripción completa

Detalles Bibliográficos
Autores principales: Dai, Shuxin, Zou, Zhiming, Wang, Renda, Li, Yuhang, Li, Bingsheng, Ge, Fangfang, Li, Peng
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Hindawi 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9452973/
https://www.ncbi.nlm.nih.gov/pubmed/36105550
http://dx.doi.org/10.1155/2022/4549441
_version_ 1784785038158594048
author Dai, Shuxin
Zou, Zhiming
Wang, Renda
Li, Yuhang
Li, Bingsheng
Ge, Fangfang
Li, Peng
author_facet Dai, Shuxin
Zou, Zhiming
Wang, Renda
Li, Yuhang
Li, Bingsheng
Ge, Fangfang
Li, Peng
author_sort Dai, Shuxin
collection PubMed
description SiC-based components are sometimes susceptible to aqueous dissolution in LWR coolant environments. To address this issue, ~10 μm thick Cr coatings was deposited on reaction-bonded silicon carbide (RBSC) plates by magnetron sputtering. Corrosion behavior of Cr-coated SiC and -uncoated SiC coupons was studied by immersing in autoclave (345°C and 16.5 MPa). The weight loss of the Cr coated SiC coupons (3.02% after the 93-days) in the autoclave tests was effectively reduced due to their Cr-coated surfaces, in contrast to the uncoated ones (20.4% after the 78-days). Moreover, microstructural and compositional evolutions were examined by using scanning electron microscopy (SEM), X-ray diffraction (XRD), and Raman spectroscopy. It was revealed that a continuous and dense Cr(2)O(3) layer formed on the surface after the hydrothermal corrosion, which can suppress the in-diffusion of corrosive medium.
format Online
Article
Text
id pubmed-9452973
institution National Center for Biotechnology Information
language English
publishDate 2022
publisher Hindawi
record_format MEDLINE/PubMed
spelling pubmed-94529732022-09-13 Hydrothermal Corrosion of SiC Coupons Suppressed by Magnetron Sputtered Cr Coatings Dai, Shuxin Zou, Zhiming Wang, Renda Li, Yuhang Li, Bingsheng Ge, Fangfang Li, Peng Scanning Research Article SiC-based components are sometimes susceptible to aqueous dissolution in LWR coolant environments. To address this issue, ~10 μm thick Cr coatings was deposited on reaction-bonded silicon carbide (RBSC) plates by magnetron sputtering. Corrosion behavior of Cr-coated SiC and -uncoated SiC coupons was studied by immersing in autoclave (345°C and 16.5 MPa). The weight loss of the Cr coated SiC coupons (3.02% after the 93-days) in the autoclave tests was effectively reduced due to their Cr-coated surfaces, in contrast to the uncoated ones (20.4% after the 78-days). Moreover, microstructural and compositional evolutions were examined by using scanning electron microscopy (SEM), X-ray diffraction (XRD), and Raman spectroscopy. It was revealed that a continuous and dense Cr(2)O(3) layer formed on the surface after the hydrothermal corrosion, which can suppress the in-diffusion of corrosive medium. Hindawi 2022-08-31 /pmc/articles/PMC9452973/ /pubmed/36105550 http://dx.doi.org/10.1155/2022/4549441 Text en Copyright © 2022 Shuxin Dai et al. https://creativecommons.org/licenses/by/4.0/This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Article
Dai, Shuxin
Zou, Zhiming
Wang, Renda
Li, Yuhang
Li, Bingsheng
Ge, Fangfang
Li, Peng
Hydrothermal Corrosion of SiC Coupons Suppressed by Magnetron Sputtered Cr Coatings
title Hydrothermal Corrosion of SiC Coupons Suppressed by Magnetron Sputtered Cr Coatings
title_full Hydrothermal Corrosion of SiC Coupons Suppressed by Magnetron Sputtered Cr Coatings
title_fullStr Hydrothermal Corrosion of SiC Coupons Suppressed by Magnetron Sputtered Cr Coatings
title_full_unstemmed Hydrothermal Corrosion of SiC Coupons Suppressed by Magnetron Sputtered Cr Coatings
title_short Hydrothermal Corrosion of SiC Coupons Suppressed by Magnetron Sputtered Cr Coatings
title_sort hydrothermal corrosion of sic coupons suppressed by magnetron sputtered cr coatings
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9452973/
https://www.ncbi.nlm.nih.gov/pubmed/36105550
http://dx.doi.org/10.1155/2022/4549441
work_keys_str_mv AT daishuxin hydrothermalcorrosionofsiccouponssuppressedbymagnetronsputteredcrcoatings
AT zouzhiming hydrothermalcorrosionofsiccouponssuppressedbymagnetronsputteredcrcoatings
AT wangrenda hydrothermalcorrosionofsiccouponssuppressedbymagnetronsputteredcrcoatings
AT liyuhang hydrothermalcorrosionofsiccouponssuppressedbymagnetronsputteredcrcoatings
AT libingsheng hydrothermalcorrosionofsiccouponssuppressedbymagnetronsputteredcrcoatings
AT gefangfang hydrothermalcorrosionofsiccouponssuppressedbymagnetronsputteredcrcoatings
AT lipeng hydrothermalcorrosionofsiccouponssuppressedbymagnetronsputteredcrcoatings