Influence of laser surface hardening on corrosion properties of Al-Zn-Si cast alloy
This work is focused on the effect of the laser surface treatment (laser power 50 and 80 W) on microstructure and corrosion properties of self-hardened AlZn10Si8Mg cast alloy used for engine and vehicle constructions. The electrochemical impedance spectroscopy (EIS) technique and Nyquist plots in a...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Croatian Metallurgical Society
2017-01-01
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| Series: | Metalurgija |
| Subjects: | |
| Online Access: | http://hrcak.srce.hr/file/249271 |
| Summary: | This work is focused on the effect of the laser surface treatment (laser power 50 and 80 W) on microstructure and corrosion properties of self-hardened AlZn10Si8Mg cast alloy used for engine and vehicle constructions. The electrochemical impedance spectroscopy (EIS) technique and Nyquist plots in a 1M NaCl test solution at 20 °C were carried out. A detailed corrosion study showed that corrosion resistance samples with laser layer were marginally less; probably the presence of chloride ions significantly damaged the Al<sub>2</sub>O<sub>3</sub> film and caused the formation of NaAlO<sub>2</sub>. |
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| ISSN: | 0543-5846 1334-2576 |