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The effects of activated sintering technology of H2 atmosphere sintering on the microstructure and properties of W-15Cu alloy using ultrafine W-15Cu composite powder fabricated by spray drying & calcining-continuous reduction technology were investigated.The experimental results showed that W-15Cu alloy,consolidated by activated sintering technology of H2 atmosphere sintering for 1 h at 1300 ℃,with 98.5 % relative density,transverse rupture strength 1218 MPa,Vickers hardness HV0.5 378,average grain size about 1.2 μm and thermal conductivity 192 W/m·K,was obtained.In comparison to the normal sintering process,activated sintering process to W-15Cu alloy could be achieved at lower sintering temperature.Furthermore,better properties in activated sintered compacts were obtained,and activated sintering process resulted in finer microstructure and excellent properties.
The effects of activated sintering technology of H2 atmosphere sintering on the microstructure and properties of W-15Cu alloy using ultrafine W-15Cu composite powder fabricated by spray drying & calcining-continuous reduction technology were investigated. The experimental results showed that W-15Cu alloy, consolidated by activated sintering technology for 1 h at 1300 ° C with 98.5% relative density, transverse rupture strength 1218 MPa, Vickers hardness HV0.5 378, average grain size about 1.2 μm and thermal conductivity 192 W / m · K , was obtained. In comparison with the normal sintering process, the activated sintering process to W-15Cu alloy could be achieved at lower sintering temperature. Fuerthermore, better properties in activated sintered compacts were obtained, and the activation sintering process resulted in finer microstructure and excellent properties .