The diffusion length of the surface textured Tantalum using AVIA 355® nano-second laser was correlated with the parameters of the laser. The material was cut into 1cm x 1cm coupons was exposed to the laser beam of various residence time. The surface of the Tantalum coupon exhibited a material shape which can be designated as peaks valleys attributed to the Gaussian profile of the laser beam. The surface textured Tantalum coupon were examined under a MicroXAM 100 profilometer to create a 3D profile measure the depth of the valleys of the surface. The different residence times of the laser beam had a significant effect on the diffusion length of the surface material. The diffusion length was further checked using an equation that correlated diffusion length with the materials specific heat, thermal conductivity, density residence time. The values were found to be within 5% tolerance which validates the measurements. Contact angle of the material with water was measured using Drop Shadow Analysis to understand the change of the material properties after the surface texturing. Moreover, a thermal model using COMSOL was developed to predict the effect of the residence time on the surface material.
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ICALEO 2018: 37th International Congress on Applications of Lasers & Electro-Optics
October 14–18, 2018
Orlando, Florida, USA
ISBN:
978-1-940168-18-0
PROCEEDINGS PAPER
Nanosecond pulsed laser surface nano-texturing of tantalum: Correlation between diffusion length model and experimental observations Available to Purchase
Published Online:
October 01 2018
Citation
October 14–18, 2018. "Nanosecond pulsed laser surface nano-texturing of tantalum: Correlation between diffusion length model and experimental observations." Proceedings of the ICALEO 2018: 37th International Congress on Applications of Lasers & Electro-Optics. ICALEO 2018: 37th International Congress on Applications of Lasers & Electro-Optics. Orlando, Florida, USA. (pp. M305). ASME. https://doi.org/10.2351/7.0004075
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