Open Access
Comparison between CO2 and ND:YAG lasers for use with selective laser sintering of steel-copper powders
Jean-Pierre Kruth,Patrick Peeters,T Smolderen,Johannes Bonse,Tahar Laoui,Ludo Froyen +5 more
- Vol. 13, pp 95-112
TLDR
In this paper, the performance of different sources of laser disponibles for frittage selectif direct au laser des poudres metalliques without aucun liant polymere is analyzed.Abstract:
Le but de cette etude est d'analyser les performances des differentes sources laser disponibles pour le frittage selectif direct au laser des poudres metalliques sans aucun liant polymere. Pour cela, on a fritte des pieces bidimensionnelles (c'est-a-dire en une seule couche) de differents melanges de poudres acier-cuivre; et les differentes proprietes de ces pieces ont ete analysees. Dans cet article, on a compare en detail le laser Nd:YAG avec le laser Co 2 . On a pu en conclure que le laser Nd:YAG donnait de meilleurs resultats que le laser Co 2 pour le frittage direct en phase liquide de pieces en acier-cuivre.read more
Citations
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Journal ArticleDOI
Consolidation phenomena in laser and powder-bed based layered manufacturing
TL;DR: In this article, the authors describe which types of laser-induced consolidation can be applied to what type of material, and demonstrate that although SLS/SLM can process polymers, metals, ceramics and composites, quite some limitations and problems cause the palette of applicable materials still to be limited.
Lasers and materials in selective laser sintering
TL;DR: In this article, the current state of SLS in terms of materials and lasers is surveyed and investigated experimentally and by numerical simulation in order to get insight into laser-material interaction and to control this interaction properly.
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Modelling of radiation transfer in metallic powders at laser treatment
TL;DR: In this article, the effect of specular and diffusely reflecting particles on the absorption and deposited energy profiles of thin layers of metallic powders on a reflective substrate at normal incidence of collimated radiation is analyzed by two-flux method.
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Mechanisms of selective laser sintering and heat transfer in Ti powder
TL;DR: In this paper, coupled metallographic examination and heat transfer numerical simulation are applied to reveal the laser sintering mechanisms of Ti powder of 63.315μm particle diameter.