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- Title
Preparation and sintering properties in air of silver-coated copper powders and pastes.
- Authors
Wu, Min; Lin, Baoping; Cao, Yi; Song, Jiangang; Sun, Ying; Yang, Hong; Zhang, Xueqin
- Abstract
In this paper, uniform and well dispersed silver-coated copper powders were prepared by replacing reaction at first. The structure and properties of the bimetallic powders were investigated by XRD, SEM and TGA. It was found that anti-oxidization of the silver-coated copper powders increased with the increase of the silver content slightly and a dense coating surface was observed at Ag content of 53.9 wt%. Furthermore, the pastes with relatively low silver content which were prepared from silver-coated copper powders, displayed high conductivity similar to pure silver even after sintering in air. And their sintering properties were also investigated at different temperature in air atmosphere. The film exhibits good electrical properties at sintering temperature between 800 and 900 °C. When the paste from silver-coated copper powder with Ag content of 53.9 wt% was printed on Al 2O 3 substrate and sintered at 800 °C in air, the sheet resistance of the film is 0.036 Ω/□ only.
- Subjects
SILVER; COPPER powder; METAL coating; CHEMICAL preparations industry; SINTERING; AIR
- Publication
Journal of Materials Science: Materials in Electronics, 2013, Vol 24, Issue 12, p4913
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-013-1497-3