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Title: Effect of braze flux on direct laser sintering Cu-based metal powder
Authors: Zhu, H.H.
Lu, L. 
Fuh, J.Y.H. 
Wu, C.C.
Keywords: Direct laser sintering
Surface properties
Issue Date: 2006
Citation: Zhu, H.H., Lu, L., Fuh, J.Y.H., Wu, C.C. (2006). Effect of braze flux on direct laser sintering Cu-based metal powder. Materials and Design 27 (2) : 166-170. ScholarBank@NUS Repository.
Abstract: Influence of braze flux on the wettability and densification in direct laser sintering Cu-based metallic powder has been investigated. The 0.3 ∼ 3 wt% braze flux mainly consisting of KF (Potassium Fluoride) was added as an additive in the Cu-based metallic powder. The addition of the braze flux has dramatically improved the wettability and hence the density of the sintered samples. It has demonstrated that a small amount of flux increases the densification and sinterability while a large amount of flux additive shows negative effect in densification and sinterability. The relative density of the sample with 0.3 wt% braze flux additive increased about 7.1% compared to that of the sample without additive. Balling phenomenon was observed when higher percentage flux (1.2, 3 wt%) was used. However, the additive might cause residues covering on the surface leading to a deterioration of adhesion between the sintering layers. © 2004 Elsevier Ltd. All rights reserved.
Source Title: Materials and Design
ISSN: 02613069
DOI: 10.1016/j.matdes.2004.09.012
Appears in Collections:Staff Publications

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