Abstract
The preparation of micron size copper powder with chemical reduction method was investigated. The copper powder having excellent dispersibility was prepared when sodium metaphosphate was employed as dispersion agent. Reaction of CuSO 4·5H 2O with hydrazine hydrate at 80 °C gives spherical monodispersed micron size copper powder. The influences of dosage of dispersion agent on the size and dispersibility of powder particles were obvious. The appropriate conditions were NH 4Cl/Copper (W/W) 15% and five times calculated value of hydration hydrazine. TG/DTA/DTG of the as-prepared copper powder was investigated with thermal analyzer.
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