Introduction
Tungsten
copper sol gel method with hydrolysis and polymerization basic reaction, which
are in preparation of high purity at a low temperature, evenly distributed,
high chemical activity of single and multi-component mixtures. It is a metal alkoxide
and its compounds as raw materials, under certain conditions hydrolysis medium
and catalyst - the polycondensation reaction solution into a gel, and then by
drying and heat treatment method of obtaining synthetic materials.
Processing
Compared
with conventional sintering method, sol gel method products with high
uniformity and high purity, the temperature is 400℃~500℃ lower than conventional
sintering method, the reaction process is easy to control, can greatly reduce
the side effects of the new phase formed. At the same time, this kind of method
solve the mechanical mixing powder prepared tungsten copper composite powder
particle size is too large, mechanical impurities, tungsten copper mixing
uneven and other issues.
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