NDLI: High-temperature oxidation of FeCrAl alloy with alumina–silica–ceria coatings deposited by sol

Content Provider	SpringerLink
Author	Chęcmawski, Jacek Matraszek, Aleksandra Szczygieł, Irena Szczygieł, Bogdan
Copyright Year	2013
Abstract	One-layer protective coatings made up of SiO$_{2}$–Al$_{2}$O$_{3}$ or SiO$_{2}$–Al$_{2}$O$_{3}$–CeO$_{2}$ oxides were synthesized on a FeCrAl alloy substrate by the sol–gel method from sols containing tetraethyl orthosilicate, aluminum tri-sec-butoxide and cerium(III) 2,4-pentanedionate as the precursors. Coating solutions with the Si:Al:Ce molar ratio of 3:1:0, 3:1:0.1; 3:1:0.01, and 3:1:0.001 were used. The composition and morphology of the obtained gels were examined by TG/DSC, XRD, and SEM techniques. It was found that a small addition of cerium affected the morphology of the forming coatings and improved the FeCrAl alloy resistance to high-temperature oxidation (in air at T = 900 °C for t = 100 h). The oxidation of all the investigated samples conformed to the parabolic rate. The protection effectiveness of the one-layer coatings after 100 h of high-temperature oxidation was as high as 70 %.
Starting Page	311
Ending Page	318
Page Count	8
File Format	PDF
ISSN	13886150
Journal	Journal of thermal analysis
Volume Number	113
Issue Number	1
e-ISSN	15728943
Language	English
Publisher	Springer Netherlands
Publisher Date	2013-02-15
Publisher Place	Dordrecht
Access Restriction	Subscribed
Subject Keyword	Ceramics SiO$_{2}$–Al$_{2}$O$_{3}$ and SiO$_{2}$–Al$_{2}$O$_{3}$–CeO$_{2}$ coatings High-temperature corrosion Sol–gel FeCrAl Physical Chemistry Analytical Chemistry Polymer Sciences Inorganic Chemistry Measurement Science and Instrumentation
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Physical and Theoretical Chemistry

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