Laser sintering of cold-pressed Cu powder without binder use
CONSTANTIN, Loïc
University of Nebraska–Lincoln
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
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University of Nebraska–Lincoln
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
CONSTANTIN, Loïc
University of Nebraska–Lincoln
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
University of Nebraska–Lincoln
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
AZINA, Clio
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
University of Nebraska–Lincoln
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
University of Nebraska–Lincoln
SILVAIN, Jean-François
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
University of Nebraska–Lincoln
< Leer menos
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
University of Nebraska–Lincoln
Idioma
en
Article de revue
Este ítem está publicado en
Materialia. 2018-11, vol. 3, p. 178-181
Elsevier
Resumen en inglés
In this work, laser sintering (LS) of cold-pressed copper (Cu) powder without using a binder was demonstrated. To promote the densification of the final part, the Cu powder was cold pressed beforehand, thereby forming a ...Leer más >
In this work, laser sintering (LS) of cold-pressed copper (Cu) powder without using a binder was demonstrated. To promote the densification of the final part, the Cu powder was cold pressed beforehand, thereby forming a densely packed powder bed for the LS. The densification and microstructural evolution study show that the cold-pressed powder led to an increase of up to 11% in the relative density and a decrease of 10 times in the surface roughness. The influence of the scan speed on the densification and sintering quality was studied. A relatively slow scan speed, 25 µm/s, allowed sufficient atomic diffusion during the LS process and ultimately produced dense Cu parts without cracks and open pores. The introduction of the cold-pressing step into the LS process is critical for achieving high-density powder metallurgy parts without using binders.< Leer menos
Palabras clave en inglés
Cold pressing
Densification
Copper powder
Laser sintering (LS)
Orígen
Importado de HalCentros de investigación