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Electrochemical corrosion behaviour of Mg–Al alloys with thermal spray Al/SiCp composite coatings
| Content Provider | Scilit |
|---|---|
| Author | Pardo, A. Feliu, S. Merino, M. C. Mohedano, M. Casajús, P. Arrabal, R. |
| Copyright Year | 2012 |
| Description | The corrosion protection of Mg–Al alloys by flame thermal spraying of Al/SiC particles (SiCp) composite coatings was evaluated by electrochemical impedance spectroscopy in 3.5 wt.% NaCl solution. The volume fraction of SiCp varied between 5 and 30%. The as-sprayed Al/SiCp composite coatings revealed a high number of microchannels, largely in the vicinity of the SiCp, that facilitated the penetration of the electrolyte and the subsequent galvanic corrosion of the magnesium substrates. The application of a cold-pressing post-treatment reduced the degree of porosity of the coatings and improved the bonding at the coating/substrate and Al/SiC interfaces. This resulted in improved corrosion resistance of the coated specimens. The effectiveness of the coatings slightly decreased with the addition of 5–30 vol.% SiCp compared with the unreinforced thermal spray aluminium coatings. |
| Related Links | https://digital.csic.es/bitstream/10261/111990/1/accesoRestringido.pdf |
| Ending Page | 458 |
| Page Count | 11 |
| Starting Page | 448 |
| ISSN | 09507116 |
| e-ISSN | 17542138 |
| DOI | 10.1080/09507116.2011.592703 |
| Journal | Welding International |
| Issue Number | 6 |
| Volume Number | 26 |
| Language | English |
| Publisher | Informa UK Limited |
| Publisher Date | 2012-06-01 |
| Access Restriction | Open |
| Subject Keyword | Journal: Welding International Metallurgy and Metallurgical Engineering Magnesium Alloys Composite Coatings Corrosion Thermal Spraying |
| Content Type | Text |
| Resource Type | Article |
| Subject | Mechanics of Materials Metals and Alloys Mechanical Engineering |
