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- W2392938710 abstract "Selective laser sintering of a multi-component Cu-based metal powder, which consists of high-purity Cu, pre-alloyed CuSn and CuP, has been successfully processed basing on liquid phase sintering mechanism. The effects of processing parameters such as laser power, spot radius, scan speed, scan line spacing, and layer thickness were studied. In order to wholly control laser sintering process, the above-mentioned processing parameters were unified to one single factor, that is, energy density by volume (η). It shows that increasing laser power or decreasing scan speed leads to a large amount of liquid phase formation and facilitates liquid flow, which result in better wetting characteristics and improved densification. Moreover, at very high scan speed, balling phenomena may occur. Using a lower layer thickness promises a sound bonding between sintering layers, leading to a higher sintered density. However, at a too low layer thickness, the homogenous dispersion of powder cannot be obtained, thus damaging bonding ability between layers. A transition from a discontinuous microstructure to a relatively smooth and dense microstructure occurs with decreasing scan line spacing, resulting in a higher densification. The sintered density increases sharply with increasing the energy density by volume to a critical value (η about 0.15 kJ/mm3). However, as it increases to a high value (η0.30 kJ/mm3), the sintered density shows a decrease." @default.
- W2392938710 created "2016-06-24" @default.
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- W2392938710 date "2005-01-01" @default.
- W2392938710 modified "2023-09-23" @default.
- W2392938710 title "Effects of Processing Parameters on Densification of Multi-component Cu-based Metal Powder in Selective Laser Sintering Process" @default.
- W2392938710 hasPublicationYear "2005" @default.
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