Microstructure of Al-Si Slurry Coatings on Austenitic High-Temperature Creep Resisting Cast Steel
Author
Source
Advances in Materials Science and Engineering
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-02-01
Country of Publication
Egypt
No. of Pages
12
Abstract EN
This paper presents the results of microstructural examinations on slurry aluminide coatings using scanning electron microscopy, X-ray microanalysis, and X-ray diffraction.
Aluminide coatings were produced in air atmosphere on austenitic high-temperature creep resisting cast steel.
The function of aluminide coatings is the protection of the equipment components against the high-temperature corrosion in a carburising atmosphere under thermal shock conditions.
The obtained coatings had a multilayered structure composed of intermetallic compounds.
The composition of newly developed slurry was powders of aluminium and silicon; NaCl, KCl, and NaF halide salts; and a water solution of a soluble glass as an inorganic binder.
The application of the inorganic binder in the slurry allowed to produce the coatings in one single step without additional annealing at an intermediate temperature as it is when applied organic binder.
The coatings were formed on both: the ground surface and on the raw cast surface.
The main technological parameters were temperature (732–1068°C) and time of annealing (3.3–11.7 h) and the Al/Si ratio (4–14) in the slurry.
The rotatable design was used to evaluate the effect of the production parameters on the coatings thickness.
The correlation between the technological parameters and the coating structure was determined.
American Psychological Association (APA)
Kochmańska, Agnieszka E.. 2018. Microstructure of Al-Si Slurry Coatings on Austenitic High-Temperature Creep Resisting Cast Steel. Advances in Materials Science and Engineering،Vol. 2018, no. 2018, pp.1-12.
https://search.emarefa.net/detail/BIM-1121110
Modern Language Association (MLA)
Kochmańska, Agnieszka E.. Microstructure of Al-Si Slurry Coatings on Austenitic High-Temperature Creep Resisting Cast Steel. Advances in Materials Science and Engineering No. 2018 (2018), pp.1-12.
https://search.emarefa.net/detail/BIM-1121110
American Medical Association (AMA)
Kochmańska, Agnieszka E.. Microstructure of Al-Si Slurry Coatings on Austenitic High-Temperature Creep Resisting Cast Steel. Advances in Materials Science and Engineering. 2018. Vol. 2018, no. 2018, pp.1-12.
https://search.emarefa.net/detail/BIM-1121110
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1121110