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Friction and wear properties of AZ91 alloy reinforced by CNTs coated with MgO
- Source :
- Journal of Aeronautical Materials, Vol 43, Iss 5, Pp 29-38 (2023)
- Publication Year :
- 2023
- Publisher :
- Journal of Aeronautical Materials, 2023.
-
Abstract
- AZ91 alloy reinforced by carbon nanotubes coated with MgO(AZ91-MgO@CNTs) was prepared by powder metallurgy, hot extrusion and T4 treatment. The influences of MgO@CNTs content and load on the friction and wear property, surface wear morphology and debris topography of AZ91-MgO@CNTs composites were investigated under the dry sliding friction. The results show that MgO@CNTs can improve the wear properties of AZ91-MgO@CNTs. With increasing the content of MgO@CNTs, the strengthening effect of the wear properties of the composite increases and then decreases. Compared with AZ91-CNTs, AZ91-MgO@CNTs has smaller friction coefficient and lower abrasion loss, indicating that the MgO@CNTs is better than CNTs to improve the wear properties of AZ91 alloy. The main wear mechanism of AZ91-MgO@CNTs is abrasive wear under the load of 10 N. When the load is 50 N, there are three wear mechanisms appeared: abrasive wear, oxidation wear and adhesive wear.
Details
- Language :
- Chinese
- ISSN :
- 10055053
- Volume :
- 43
- Issue :
- 5
- Database :
- Directory of Open Access Journals
- Journal :
- Journal of Aeronautical Materials
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.4d66fdf5ab49bfaa14e1d9c29e91f3
- Document Type :
- article
- Full Text :
- https://doi.org/10.11868/j.issn.1005-5053.2023.000040