Low-Temperature Liquid-phase Infiltration of Sintered microparts by Gold Eutectic Alloys/Infiltrazione a bassa temperatura in fase liquida di microparti sinterizzate mediante leghe eutettiche di oro

Lanzetta, Michele (2010) Low-Temperature Liquid-phase Infiltration of Sintered microparts by Gold Eutectic Alloys/Infiltrazione a bassa temperatura in fase liquida di microparti sinterizzate mediante leghe eutettiche di oro. Diamante. Applicazioni e tecnologia, 16 (62 sup). pp. 26-35. ISSN 1824-5765

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Abstract

The flexibility of powder-based RP (or SFF) techniques and the densification method proposed in this paper would open a whole new range of applications both in the macro and micro scale where thermal constraints exist. This work starts from a simple idea, the infiltration of sintered skeletons made of pure gold spherical powder ranging between 5 and 40 μm in size, by binary gold eutectics based on silicon, germanium and tin, with a melting point as low as 278°C. The variable space was investigated in a preliminary manner. Experiments have shown that high densification rate, good surface finish and improved mechanical properties can be achieved with this process.

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