피복제 적하법에 의한 Ag 피복 Cu 미립자의 제조 및 광학적 특성

유연태; Yeon-tae Yu

Korean Journal of Materials Research, Vol.13, No.9, 555-560, September, 2003

DOI10.3740/MRSK.2003.13.9.555 Export Citation

피복제 적하법에 의한 Ag 피복 Cu 미립자의 제조 및 광학적 특성

Preparation and Optical Properties of Ag-Coated Cu Powder by Dropping Method of Coating Agent

유연태^†

한국지질자원연구원 자원활용소재연구부

Yeon-tae Yu^†

Minerals and Materials Processing Division, Korea Institute of Geoscience and Mineral Resources, Daejeon 305-350, Korea

E-mail:

Ag-coated Cu particles were prepared by dropping method of coating agent and were evaluated by scanning electron microscope and color difference meter. The shape of Cu particles having obvious crystal plan and edge was changed spherically according to the increase of Ag coating amount. When the Ag coating amount was 50 wt% to Cu particles, the whiteness of Ag-coated Cu particles was almost similar to that of pure Ag particles. Adding NH 4 OH in reductant solution could increase effectively the whiteness of the Ag-coated particles. The Ag-coated particles having the highest whiteness was obtained when the content of hydrazine in reductant solution was 0.48 M.

Keywords:Ag-coated Cu particle;conductive paste;whiteness;color change

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