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A study of electrodepositing Sn-SiC composite coatings with good welding performances

  • School of Chemistry and Chemical Engineering, Harbin Institute of Technology

Research output: Contribution to journalArticlepeer-review

Abstract

Sn-SiC composite coatings with a good welding performance were electrodeposited in a bath containing 55 g L-1 Sn(CH 3SO3)2, 160 g L-1 methyl sulfonic acid (MSA), 10 mg L-1 OP-21, 30 g L-1 SiC nano-particles and 50 mg L-1 sodium dodecyl sulfate (SDS), at an inclination angle of the plating tank of 45°, a temperature of 20 °C and a cathode-current density of 3 A dm-2 for 15 minutes. The incorporation of SiC nano-particles in the Sn deposits refines the crystalline grains. The solder spreading performance and Sn whiskers of the Sn-SiC coatings composited with 1.0-2.3 wt% SiC are better and smaller than that of the pure Sn coating, respectively. Only when the intercalation of SiC nano-particles into the Sn grain boundary is firm and homogeneous could coatings with a good welding performance be obtained.

Original languageEnglish
Pages (from-to)5853-5859
Number of pages7
JournalRSC Advances
Volume4
Issue number12
DOIs
StatePublished - 2014
Externally publishedYes

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