Portal de Periódicos da CAPES

Micromachining of Aluminum Surface by Laser Irradiation and Electrochemical Etching

2005; The Surface Finishing Society of Japan; Volume: 56; Issue: 7 Linguagem: Inglês

10.4139/sfj.56.409

1884-3409

Tatsuya Kikuchi, Hideaki Takahashi, Tomohiro Maruko,

Advanced Machining and Optimization Techniques

Microgrooves were fabricated on aluminum surfaces using anodizing, laser irradiation, and electrochemical etching. Aluminum specimens covered with porous type oxide films were irradiated with a pulsed Nd-YAG laser in distilled water to remove the anodic oxide film. The electrochemical etching of the laser-irradiated specimen in NaCl solution caused the formation of grooves with rough surfaces, while the electrochemical etching in CH3COOH/HClO4 solution caused the formation of grooves with flat surfaces. The width and depth of the grooves increased with electrochemical etching time. Mesh-like micro-patterns with 70μm line width and 30μm line depth were fabricated on aluminum surfaces by consecutive processes of anodizing, laser irradiation, and electrochemical etching.