Abstract
The present study aimed to enhance wear resistance of 304 stainless steel (SS) reinforced AA7075 aluminum matrix bimetal composite by micro-arc oxidation (MAO) process. Monolithic AA7075 alloy and 304 SS reinforced AA7075 matrix composites with and without MAO coating were subjected to ball-on-disc type tribometer with testing loads of 1, 5, 10 and 15 N. Continuous interfacial reaction layer consisted of θ-Fe 4 Al 13 and η-Fe 2 Al 5 phases was obtained at 304 SS/AA7075 interface. These phases contributed to improvement of the wear resistance of bimetal composite by reducing adhesive wear considerably. With the application of MAO treatment, wear-resistant Al 2 O 3 (alumina) layer was formed on the surface of composite. MAO coating provided better wear resistance as compared to the original state of the composite, especially at higher loads during wear tests.
| Original language | English |
|---|---|
| Pages (from-to) | 15-24 |
| Number of pages | 10 |
| Journal | Surface and Coatings Technology |
| Volume | 368 |
| DOIs | |
| Publication status | Published - 25 Jun 2019 |
Bibliographical note
Publisher Copyright:© 2019
Funding
This research was supported by Yildiz Technical University Scientific Research Projects Coordination Department with the project number of FDK-2017-3241 .
| Funders | Funder number |
|---|---|
| Yildiz Teknik Üniversitesi | FDK-2017-3241 |
Keywords
- Alumina
- Bimetal composite
- Melt infiltration casting
- Micro-arc oxidation
- Wear