TITLE:
Synthesis of Sn-3.5Ag Alloy Nanosolder by Chemical Reduction Method
AUTHORS:
Hsin Jen Pan, Chao Yang Lin, Udit Surya Mohanty, Jung Hua Chou
KEYWORDS:
Alloy, Agglomeration, Nanoparticles, Chemical Reduction, Morphology, X-Ray Diffraction
JOURNAL NAME:
Materials Sciences and Applications,
Vol.2 No.10,
October
17,
2011
ABSTRACT: The synthesis of Sn-3.5Ag alloy nanosolder was investigated by chemical reduction method. In this method, chemical precipitation was achieved by using sodium NaBH4 as a reducing agent and PVP (poly-m-vinyl 2- pyrrolidone) as a stabilizer. The experimental results obtained with different amounts of NaBH4 and PVP were compared. X-ray diffraction (XRD) patterns revealed that Ag3Sn was formed due to the successful alloying process. Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM) demonstrated a change in the morphology of Sn-3.5 Ag alloy nanosolder with increase in the PVP content in the bath. The size of the nanoparticles ranged from 300 to 700 nm. The nanosolder/nanoparticles were thus synthesized successfully under controlled and optimized chemical reduction process.