ISSN:
1013-9826
Quelle:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Thema:
Maschinenbau
Notizen:
Monodispersed Cu powders were prepared in aqueous solution through a wet-reductionprocess with hydrazine hydrate (N2H4·H2O). In particular, the effect of the dispersant such as sodiumpyrophosphate decahydrate (Na4O7P2·10H2O), carboxymethyl cellulose sodium salt (CMC) in watersolvent on the particle size for the prepared Cu powders was investigated. The Cu powders essentiallywere monodispersed and irregular in shape regardless of reaction temperature and dispersant. In the caseof adding the Na4O7P2·10H2O, the particle size of Cu powders increased with the increase of reactiontemperature, which the particles were agglomerated in irregular shape and became to be large. Theparticle size distributions was asymmetry and to be broad regardless of reaction temperature. On the otherhand, when the CMC was added, the particle size of Cu powders, which were much finer compared withadding the Na4O7P2·10H2O as a dispersant, was not much changed with reaction temperature. The particlesize distribution of Cu powder was much narrow regardless of reaction temperature. As a result, it wouldbe suggested that the CMC was more effective dispersant reagent to produce the monodispersed and fineCu powders with narrow size distribution using the wet chemical reduction process
Materialart:
Digitale Medien
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/53/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.336-338.2118.pdf
