THE INFLUENCE OF THE FE-CR-AL SYSTEM COATINGS CHEMICAL COMPOSITION ON THEIR HEAT RESISTANCE-Reference-Cited by-同舟云学术

THE INFLUENCE OF THE FE-CR-AL SYSTEM COATINGS CHEMICAL COMPOSITION ON THEIR HEAT RESISTANCE

Published:2021-04-23 Issue:4(251) Volume: Page:7-12
ISSN:1990-5297
Container-title:IZVESTIA VOLGOGRAD STATE TECHNICAL UNIVERSITY
language:
Short-container-title:IZVESTIA VGTU

Author:

Shmorgun V. G.¹,Bogdanov A. I.¹,Slautin O. V.¹,Kulevich V. P.¹,Kuznecov S. A.¹

Affiliation:

1. Volgograd State Technical University

Abstract

The influence of the chemical composition of the Fe-Cr-Al system coatings on their heat resistance at 1100 °C was investigated. It is shown that the lowest oxidation rate is possessed by the coating obtained by aluminizing the Cr15Al5 alloy in the silumin melt, for which the depth of corrosion penetration after 500 h at 1100 °C was 2.5 μm. The depth of corrosion penetration in coating with a higher chromium content (23 at.%) reaches 8.9 μm. A decrease in the chromium content (up to 5 at.%) or aluminum (up to 10 at.%) in the surface layer is accompanied by a critical increase in the corrosion rate. Based on the kinetics of changes in the aluminum content in the surface layer, it was established that the coating obtained on the Cr23Al5 alloy has the highest heat resistance.

Funder

Russian Foundation for Basic Research

Publisher

Volgograd State Technical University

Subject

General Medicine

Link

http://www.vstu.ru/nauka/izdaniya/doi/10.35211_1990-5297-2021-4-251-7-12.pdf

Reference14 articles.

1. High emissivity coatings for high temperature application: progress and prospect / He X. [et al.] // Thin Solid Films. - 2009. - Т. 517. - №. 17. - С. 5120-5129.

2. Kanthal, A. B. Kanthal Handbook-Heating Alloys for Electric Household Appliances / A. B. Kanthal // Box 502, SE-73427 Hallstahammar, Sweden. - 2001.

3. Criteria for the formation of protective Al2O3 scales on Fe-Al and Fe-Cr-Al alloys / Zhang Z. G. [et al.] // Corrosion Science. - 2006. - Т. 48. - №. 3. - С. 741-765.

4. Initial oxidation of Fe-Al and Fe-Cr-Al alloys: Cr as an alumina booster / Heinonen M. H. [et al.] // Oxidation of metals. - 2011. - Т. 76. - №. 3. - С. 331-346.

5. High temperature oxidation of Fe-Al and Fe-Cr-Al alloys: The role of Cr as a chemically active element / Airiskallio E. [et al.] // Corrosion Science. - 2010. - Т. 52. - №. 10. - С. 3394-3404.