IMR OpenIR
Influence of Cr content on high-temperature oxidation behaviour of arc sprayed Ni-Cr coatings
Long, Weiyang; Li, Jiahui; Wu, Yuping; Hong, Sheng; Zhang, Jianfeng; Qiao, Lei
2019-05-04
Source PublicationMATERIALS AT HIGH TEMPERATURES
ISSN0960-3409
Volume36Issue:3Pages:187-194
AbstractIn this study, the high-temperature oxidation behaviour of arc-sprayed Ni-Cr coatings with high Cr contents of 30, 45 and 50 at.% was investigated in comparison with reference AISI 1020 steel. X-ray diffraction, scanning electron microscopy and energy dispersive spectroscopy were utilised to characterise the oxide scales. The oxidation resistance of the steel substrates was found to be enhanced after the application of the Ni-Cr coatings since the oxidation kinetics followed the parabolic law. In addition, the oxidation rate of Ni-50Cr coating was 56.5% lower than that of Ni-30Cr coating, indicating that the oxidation performance of coatings was improved with increasing Cr content. The oxide layers of Ni-Cr coating were found to be a double layer structure protecting the substrate from severely oxidation, which composed of a top layer of NiO and a basal layer of Cr2O3 and NiCr2O4. The surface of Ni-30Cr coating contained lots of multi-angle NiO crystals, while the surface of Ni-50Cr coating contained a dense Cr2O3 structure, suggesting that the growth of NiO crystals was limited due to the large amount of Cr-rich oxides.
KeywordArc spraying Ni-Cr coatings high-temperature oxidation protective scale
Indexed BySCI
Language英语
WOS IDWOS:000472115600001
PublisherTAYLOR & FRANCIS LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/81107
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Long, Weiyang,Li, Jiahui,Wu, Yuping,et al. Influence of Cr content on high-temperature oxidation behaviour of arc sprayed Ni-Cr coatings[J]. MATERIALS AT HIGH TEMPERATURES,2019,36(3):187-194.
APA Long, Weiyang,Li, Jiahui,Wu, Yuping,Hong, Sheng,Zhang, Jianfeng,&Qiao, Lei.(2019).Influence of Cr content on high-temperature oxidation behaviour of arc sprayed Ni-Cr coatings.MATERIALS AT HIGH TEMPERATURES,36(3),187-194.
MLA Long, Weiyang,et al."Influence of Cr content on high-temperature oxidation behaviour of arc sprayed Ni-Cr coatings".MATERIALS AT HIGH TEMPERATURES 36.3(2019):187-194.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Long, Weiyang]'s Articles
[Li, Jiahui]'s Articles
[Wu, Yuping]'s Articles
Baidu academic
Similar articles in Baidu academic
[Long, Weiyang]'s Articles
[Li, Jiahui]'s Articles
[Wu, Yuping]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Long, Weiyang]'s Articles
[Li, Jiahui]'s Articles
[Wu, Yuping]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.