Hydrogen sorption kinetics of SiC-coated Zr-1Nb alloy

Abstract

This paper describes the influence of silicon carbide (SiC) coating on hydrogen sorption kinetics of zirconium alloy E110 (Zr-1Nb). Amorphous SiC coating of 1.5-μm thickness was deposited on Zr-1Nb alloy substrate by direct current magnetron sputtering of composite cathode. Hydrogen absorption by SiC-coated Zr-1Nb alloy significantly decreased due to low hydrogen permeability of the coating. Hydrogenation tests show that SiC coating provides protective properties against hydrogen permeation in the investigated temperature range of 350-450 °C. It was shown that hydrogenation of uncoated Zr-1Nb leads to formation of δ hydrides at 350 °C and ° and γ hydrides at higher temperatures whereas in the SiC-coated Zr-1Nb alloy only δ hydrides formed. Gradient hydrogen distribution through the SiC coating and H trapping in the carbon-rich interface was observed. The adhesion strength of the coating was ~5 N. Hydrogenation up to 450 °C for 5 h does not degrade the adhesion properties during scratch testing.

Original language	English
Article number	31
Journal	Coatings
Volume	9
Issue number	1
DOIs	https://doi.org/10.3390/coatings9010031
Publication status	Published - 8 Jan 2019

Keywords

Adhesion
E110 (Zr-1Nb)
Hydrogen sorption
Hydrogenation
Magnetron sputtering
SiC coating
Zirconium alloys

ASJC Scopus subject areas

Surfaces, Coatings and Films
Materials Chemistry
Surfaces and Interfaces

Access to Document

10.3390/coatings9010031

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@article{e7c205919fe74d55bd415442019bc5d1,

title = "Hydrogen sorption kinetics of SiC-coated Zr-1Nb alloy",

abstract = "This paper describes the influence of silicon carbide (SiC) coating on hydrogen sorption kinetics of zirconium alloy E110 (Zr-1Nb). Amorphous SiC coating of 1.5-μm thickness was deposited on Zr-1Nb alloy substrate by direct current magnetron sputtering of composite cathode. Hydrogen absorption by SiC-coated Zr-1Nb alloy significantly decreased due to low hydrogen permeability of the coating. Hydrogenation tests show that SiC coating provides protective properties against hydrogen permeation in the investigated temperature range of 350-450 °C. It was shown that hydrogenation of uncoated Zr-1Nb leads to formation of δ hydrides at 350 °C and ° and γ hydrides at higher temperatures whereas in the SiC-coated Zr-1Nb alloy only δ hydrides formed. Gradient hydrogen distribution through the SiC coating and H trapping in the carbon-rich interface was observed. The adhesion strength of the coating was ~5 N. Hydrogenation up to 450 °C for 5 h does not degrade the adhesion properties during scratch testing.",

keywords = "Adhesion, E110 (Zr-1Nb), Hydrogen sorption, Hydrogenation, Magnetron sputtering, SiC coating, Zirconium alloys",

author = "Kashkarov, {Egor B.} and Syrtanov, {Maxim S.} and Murashkina, {Tatyana L.} and Kurochkin, {Alexander V.} and Yulia Shanenkova and Aleksei Obrosov",

year = "2019",

month = jan,

day = "8",

doi = "10.3390/coatings9010031",

language = "English",

volume = "9",

journal = "Progress in Organic Coatings",

issn = "0033-0655",

publisher = "Elsevier",

number = "1",

}

TY - JOUR

T1 - Hydrogen sorption kinetics of SiC-coated Zr-1Nb alloy

AU - Kashkarov, Egor B.

AU - Syrtanov, Maxim S.

AU - Murashkina, Tatyana L.

AU - Kurochkin, Alexander V.

AU - Shanenkova, Yulia

AU - Obrosov, Aleksei

PY - 2019/1/8

Y1 - 2019/1/8

N2 - This paper describes the influence of silicon carbide (SiC) coating on hydrogen sorption kinetics of zirconium alloy E110 (Zr-1Nb). Amorphous SiC coating of 1.5-μm thickness was deposited on Zr-1Nb alloy substrate by direct current magnetron sputtering of composite cathode. Hydrogen absorption by SiC-coated Zr-1Nb alloy significantly decreased due to low hydrogen permeability of the coating. Hydrogenation tests show that SiC coating provides protective properties against hydrogen permeation in the investigated temperature range of 350-450 °C. It was shown that hydrogenation of uncoated Zr-1Nb leads to formation of δ hydrides at 350 °C and ° and γ hydrides at higher temperatures whereas in the SiC-coated Zr-1Nb alloy only δ hydrides formed. Gradient hydrogen distribution through the SiC coating and H trapping in the carbon-rich interface was observed. The adhesion strength of the coating was ~5 N. Hydrogenation up to 450 °C for 5 h does not degrade the adhesion properties during scratch testing.

AB - This paper describes the influence of silicon carbide (SiC) coating on hydrogen sorption kinetics of zirconium alloy E110 (Zr-1Nb). Amorphous SiC coating of 1.5-μm thickness was deposited on Zr-1Nb alloy substrate by direct current magnetron sputtering of composite cathode. Hydrogen absorption by SiC-coated Zr-1Nb alloy significantly decreased due to low hydrogen permeability of the coating. Hydrogenation tests show that SiC coating provides protective properties against hydrogen permeation in the investigated temperature range of 350-450 °C. It was shown that hydrogenation of uncoated Zr-1Nb leads to formation of δ hydrides at 350 °C and ° and γ hydrides at higher temperatures whereas in the SiC-coated Zr-1Nb alloy only δ hydrides formed. Gradient hydrogen distribution through the SiC coating and H trapping in the carbon-rich interface was observed. The adhesion strength of the coating was ~5 N. Hydrogenation up to 450 °C for 5 h does not degrade the adhesion properties during scratch testing.

KW - Adhesion

KW - E110 (Zr-1Nb)

KW - Hydrogen sorption

KW - Hydrogenation

KW - Magnetron sputtering

KW - SiC coating

KW - Zirconium alloys

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