Processing
In the process of electrolyzation, use a
certain proportion of NaCl, KCl, Na2WO4 and CuO4 mixed solution and graphite as
electrode, the spacing electrode is 3cm, temperature controlled at 780 ℃ -800 ℃. Under 0.5V-1.0V
voltage reactants pre-electrolysis 1.5-2.0h voltage and adjusted to 2.5V-3.3V,
continuous electrolysis 3h.
The electrolysis product was boiled with
distilled out, after the addition of an appropriate amount of NaOH solution for
soaking, filtering and drying to obtain final product. Finally, use X-ray
diffraction analysis, scanning electron microscopy and energy dispersive
spectroscopy to analyze the product phase, morphology and granularity.
Advantages
Copper particles are dispersed more evenly,
no agglomeration occurs, smaller than the copper tungsten particles adhere to
the larger particles of copper particles and is more tightly wrapped. The
average copper tungsten powder particle sizes up to 0.9μm, sintering meets the
industrial requirements totally.
