Journal
POWDER METALLURGY AND METAL CERAMICS
Volume 58, Issue 9-10, Pages 529-537Publisher
SPRINGER
DOI: 10.1007/s11106-020-00107-y
Keywords
electroless plating; surface coating; acidic pre-treatment; lead-free solder composite; silicon carbide
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In the present study, an electroless nickel (EN) plating method is applied for the coating of silicon carbide (SiC) particles. The particles of SiC(Ni) were added to the Sn-3.0Ag-0.5Cu matrix for the production of SAC305/SiC(Ni) composite by the powder metallurgy route. SAC305/xSi(Ni) composite was prepared by a planetary ball milling of the starting powder, followed by compacting and sintering. Nickel-coated silicon carbide particles and the lead-free solder matrix react together, forming different phases during sintering at temperature 200 degrees C for 3 h. The microstructure, mechanical (compressive strength, microhardness, wettability, and porosity) and physical properties (density) of lead-free solder composite SAC305/SiC(Ni) were studied. The current research shows the successful application of electroless nickel (EN) plating method, and how nickel-coated SiC particles subsequently improve the mechanical properties and microstructure of lead-free solder.
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