Processing and Tribological Properties of PEO Coatings on AlZn5.5MgCu Aluminium Alloy with Incorporated Al-Cu-Fe Quasicrystals

The modification of ceramic PEO coatings developed for friction units is in trend of modern research aimed at the improvement of friction and wear. This study presents ceramic coatings formed on AlZn5.5MgCu aluminum alloy by microarc oxidation (PEO) in a one-stage technological process with inclusio...

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Bibliographic Details
Published in:Ceramics 2023-06, Vol.6 (2), p.858-871
Main Authors: Torskaya, Elena V., Morozov, Alexei V., Malyshev, Vladimir N., Shcherbakova, Olga O.
Format: Article
Language:English
Subjects:
Al-Cu-Fe quasicrystals
Alloys
Aluminum alloys
Aluminum base alloys
Ceramic coatings
Ceramics
Coatings
Coefficient of friction
Composite materials
Copper
Electrolytes
Friction
Heat resistance
Inclusions
Intermetallic compounds
Iron
Kerosene
Mechanical properties
Methods
Oxidation
Powder metallurgy
Production processes
Protective coatings
Quasicrystals
Rubbing
Tribology
wear
Wear rate
Wear tests
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Summary:The modification of ceramic PEO coatings developed for friction units is in trend of modern research aimed at the improvement of friction and wear. This study presents ceramic coatings formed on AlZn5.5MgCu aluminum alloy by microarc oxidation (PEO) in a one-stage technological process with inclusions of Al-Cu-Fe quasi-crystals. The technology of rubbing quasi-crystals into the surface of the coating during final polishing was also used. Friction and wear tests, followed by analysis of the surface and cross-sections by SEM microscopy, showed that quasicrystals affect the coating structure and frictional characteristics. The addition of a small amount of modifier to the electrolyte (0.5 percent), as well as rubbing-in technology, can reduce the coefficient of friction (up to 16 percent) and wear rate (up to 43 times) compared to pure ceramic coatings. More modifier provides a negative result.
ISSN:2571-6131
2571-6131
DOI:10.3390/ceramics6020049