Tungsten Copper Chemical Co-Deposition Method

Tungsten copper composite oxide powder was prepared by chemical co precipitation method. The nano tungsten copper composite powder was obtained by hydrogen reduction. through sintering and forming obtained tungsten copper.

Tungsten particles of tungsten copper composite powder prepared by chemical co-precipitation method and hydrogen reduction process are polygon, particle size is 30-50nm and it has high sintering activity, thermal conductivity reaches 223.1W/m.K. Compared with traditional products, the conductivity, hardness and bending strength are greatly improved.

The raw materials of it using ammonium tungstate as concentrated HNO₃ and anhydrous cupric nitrate. Firstly, in concentrated HNO₃ when mixing in copper nitrate, then the mixed solution was added into (NH₄O)₂WO₄ solution and the chemical reaction was carried out by an electromagnetic stirrer, after 1 hours remove the mixed solution, the precipitate in the muffle furnace to 250℃ roasting for 2 hours to composite oxide powder. After the composite powder crushed in a mortar, the tungsten copper composite powder is formed by the low temperature reduction of a strong drainage pipe furnace. Tungsten copper composite powder with steel molding after green relative density is 40%-47%. Finally, the ultrafine grained tungsten copper alloy was prepared by 2h sintering at 1150-1250℃ in the hydrogen furnace.

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