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Influence of Laser Texturing on Microstructure, Surface and Corrosion Properties of Ti-6Al-4V
| Content Provider | MDPI |
|---|---|
| Author | Damjan, Klobčar Conradi, Marjetka Kocijan, Aleksandra Godec, Matjaž |
| Copyright Year | 2020 |
| Description | We present the modification of Ti-6Al-4V surfaces with a diode end-pumped Nd:YVO4 laser by varying the distance between laser-produced micro(μ)-channels. We analyzed the influence of laser texturing on the morphology, microstructure, surface and corrosion properties of Ti-6Al-4V. SEM imaging reveals a characteristic μ-channel pattern with different scan line separations, while electron backscatter diffraction (EBSD) indicates that laser texturing with the current parameters influences the microstructure up to 2 µm deep with the most significant influence at the tips, where melting and rapid solidification occur. The Vickers hardness test indicates a surface hardening effect of the laser-textured compared to the as-received Ti-6Al-4V surfaces. The XPS analysis showed that the oxide layer on the laser-textured samples was considerably thicker compared to the as-received sample, at 20 and 7 nm, respectively. We observed that the wettability was strongly correlated with the scan line separation. The results show increased hydrophobicity with increased scan line separation. The corrosion resistance was improved for laser-textured surfaces compared to the as-received surface and increased with the scan line separation. |
| Starting Page | 1504 |
| e-ISSN | 20754701 |
| DOI | 10.3390/met10111504 |
| Journal | Metals |
| Issue Number | 11 |
| Volume Number | 10 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2020-11-11 |
| Access Restriction | Open |
| Subject Keyword | Metals Manufacturing Engineering Surface Texture Ti-6al-4v Alloy Microstructure Wettability Corrosion |
| Content Type | Text |
| Resource Type | Article |
