Oxidation Resistance and Modification Reaction Mechanism of Al Coating Sprayed on Pure Ti Substrate
Joint Authors
Jia, Qianqian
Li, Deyuan
Guan, Sheng
Zhang, Zhuang
Zhang, Nannan
Zhao, Wenzhen
Source
Advances in Materials Science and Engineering
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-10-15
Country of Publication
Egypt
No. of Pages
9
Abstract EN
An Al coating was deposited on the surface of pure Ti substrate by arc spray technology.
In order to enable the modification reaction between the Al coating and Ti substrate, the specimen was heated to a temperature above the melting point of Al.
Oxidation testing of the uncoated Ti and coated specimen was conducted at 1073 K under an air atmosphere.
The microstructure, chemical composition, and phase determination of the coatings and interfaces, before and after modification treatment, were done using SEM, EDS, and XRD methods.
The relationships between the modification results and time and temperature were discussed.
The results showed that, after heating at 973 K for 5 hours, there was still sufficient Al on the surface of the specimen.
Only intermetallic TiAl3 was formed in the diffusion region.
After heating at 1073 K for 5 hours, all the Al elements diffused into the Ti substrate.
Intermetallics TiAl2 and Ti3Al were also formed in the diffusion front of Al, in addition to TiAl3.
After heating at 1173 K for 5 hours, a new intermetallic TiAl phase was formed at the interface of TiAl2 and Ti3Al.
As the modification reaction time was prolonged at 1173 K, the formation of intermetallics TiAl2, TiAl, and Ti3Al were all increased.
Among them, the formation amount of TiAl2 > Ti3Al > TiAl.
The specimen after modification treatment had better high temperature oxidation resistance than the pure Ti substrate without coating.
American Psychological Association (APA)
Jia, Qianqian& Li, Deyuan& Guan, Sheng& Zhang, Zhuang& Zhang, Nannan& Zhao, Wenzhen. 2018. Oxidation Resistance and Modification Reaction Mechanism of Al Coating Sprayed on Pure Ti Substrate. Advances in Materials Science and Engineering،Vol. 2018, no. 2018, pp.1-9.
https://search.emarefa.net/detail/BIM-1119681
Modern Language Association (MLA)
Jia, Qianqian…[et al.]. Oxidation Resistance and Modification Reaction Mechanism of Al Coating Sprayed on Pure Ti Substrate. Advances in Materials Science and Engineering No. 2018 (2018), pp.1-9.
https://search.emarefa.net/detail/BIM-1119681
American Medical Association (AMA)
Jia, Qianqian& Li, Deyuan& Guan, Sheng& Zhang, Zhuang& Zhang, Nannan& Zhao, Wenzhen. Oxidation Resistance and Modification Reaction Mechanism of Al Coating Sprayed on Pure Ti Substrate. Advances in Materials Science and Engineering. 2018. Vol. 2018, no. 2018, pp.1-9.
https://search.emarefa.net/detail/BIM-1119681
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1119681