Journal ArticleDOI
Selective laser sintering of single‐ and two‐component metal powders
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In this paper, a comparative characterisation of selective laser sintering (SLS) mechanisms of single and two-component powders is presented, where the effects of the volume fraction of liquid phase and powder absorptance were discussed.Abstract:
A comparative characterisation of selective laser sintering (SLS) mechanisms of single‐ and two‐component powders is presented The effects of the volume fraction of liquid phase and the powder absorptance were discussed Single‐component Ni‐alloy, Fe and Cu powders as well as two‐component powder systems based on Ni‐alloy, Fe and Cu were investigated In particular, the following types of two‐component powder systems were studied: Ni‐alloy‐Cu and Fe‐Cu powder mixtures as well as Cu‐coated Ni‐alloy powder and Cu‐coated Fe powders SLS experiments were performed with a CW‐ Nd:YAG laser (λ=106 μm) The acting mechanism in all cases was liquid phase sinteringread more
Citations
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Journal ArticleDOI
Effects of material morphology and processing conditions on the characteristics of hydroxyapatite and high-density polyethylene biocomposites by selective laser sintering
TL;DR: In this article, the properties of SLS-fabricated specimens have been investigated and the effects of the materials used in the process and processing parameters (PPs) on the physical properties of these specimens and the relationship with porosity are discussed.
Book ChapterDOI
History of Stereolithographic Processes
TL;DR: This chapter describes the history and development of photolithographic systems, explaining the origins of modern stereolithography and photomask system, and highlights the importance of a modern prototype.
Journal ArticleDOI
Influence of phosphorus element on direct laser sintering of multicomponent Cu-based metal powder
D. D. Gu,Y. F. Shen +1 more
TL;DR: In this paper, a detailed investigation on the influence of the phosphorus element upon the laser sintering of a multicomponent Cu-based metal powder system consisting of Cu, Cu-10Sn, and Cu-84P powder systems were sintered in atmosphere at room temperature using the following optimal processing parameters: laser power of 350 W, scan speed of 004 m/s, scan line spacing of 015 mm, and layer thickness of 025 mm.
Journal ArticleDOI
Laser Powder Bed Fusion: A State-of-the-Art Review of the Technology, Materials, Properties & Defects, and Numerical Modelling
Sohini Chowdhury,N. Yadaiah,Chandra Prakash,Seeram Ramakrishna,Saurav Dixit,Lovi Raj Gulta,Dharam Buddhi +6 more
TL;DR: In this paper , the basic principle of the LPBF process, scientific and technological progress of several inter-related parameters, feedstock materials, produced properties/defects, and insights of numerical modeling to virtually understand the process behavior.
Journal ArticleDOI
A phase-field model for solid-state selective laser sintering of metallic materials
Xing Zhang,Yiliang Liao +1 more
TL;DR: In this article, a phase-field-based SLS model is developed to predict the evolving of microstructure in the solid-state SLS process, which is validated by experimental findings in terms of the neck size between adjacent particles.
References
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PatentDOI
Direct selective laser sintering of metals
Suman Das,Joseph J. Beaman +1 more
TL;DR: In this paper, a method of fabricating a fully dense, three dimensional object by direct laser sintering is disclosed, in which a degased powder layer is dispensed over a target surface and a beam of directed energy melts metallic powder in order to form a solid layer cross section.
Journal ArticleDOI
Absorptance of powder materials suitable for laser sintering
TL;DR: In this paper, the normal spectral absorptance of a number of metal, ceramic and polymer powders susceptible to be utilised for selective laser sintering (SLS) technique was experimentally determined.
Comparison between CO2 and ND:YAG lasers for use with selective laser sintering of steel-copper powders
TL;DR: 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.
Comparison between CO2 and Nd:YAG lasers for use with selective laser sintering of steel-copper powders
TL;DR: 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.