Abstract
Femtosecond (fs) laser direct fabrication of a Ni microcantilever was investigated, and the laser processing parameters were optimized. The Ni microcantilevers of good quality with structure and dimensions according commendably with that of the designed cantilever were obtained. The result shows that fs laser micromachining is a promising method for directly fabricating metallic microcomponents. Using the fs laser fabricated Ni microcantilever, the cyclic fatigue test under corrosion was investigated. The testing results show that the effect of surface flaws and roughness play a greater role in degrading the resistance of the corrosion fatigue for metallic microcomponents than for ordinary sized components. The creep deformations of the micro-sized Ni specimens can easily occur at room temperature, and this implies that the micro-sized Ni specimens appear to have an improved resistance towards total crack as compared to ordinary-sized Ni specimens.
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