Interaction model for near infrared pulsed-laser sintering of metal powders

Pascal Fischer; Valerio Romano; Heinz P. Weber

doi:10.1117/12.515625

2 September 2003 Interaction model for near infrared pulsed-laser sintering of metal powders

Pascal Fischer, Valerio Romano, Heinz P. Weber

Proceedings Volume 5121, Laser Processing of Advanced Materials and Laser Microtechnologies; (2003) https://doi.org/10.1117/12.515625
Event: Laser Processing of Advanced Materials and Laser Microtechnologies, 2002, Moscow, Russian Federation

Abstract

The densification processes occurring in metallic powders upon interaction with pulsed laser radiation have been studied experimentally and compared with results obtained from a numerical simulation model. The analysis of the sintered samples shows consolidation features, which are in very good agreement with the model predictions. The limited amount of molten material due to pulsed interaction and the recoil pressure exerted on the powder by the plasma and the ablation plume allow to achieve a predetermined density (or porosity) from less than 60% to more than 90% of the bulk density, depending on the laser parameters and processing steps. A wider range of porosity could be achieved by mixture of the metallic powder with later removable spacers of the desired size.

Citation Download Citation

Pascal Fischer, Valerio Romano, and Heinz P. Weber "Interaction model for near infrared pulsed-laser sintering of metal powders", Proc. SPIE 5121, Laser Processing of Advanced Materials and Laser Microtechnologies, (2 September 2003); https://doi.org/10.1117/12.515625

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