Abstract
In this work, WMo nanopowders synthesized by combined sol-gel and hydrogen reduction with the mass fraction of 10% have been added into the WCu alloy to tailor the microstructure and properties of the WCu pseudo-alloy. The electrical properties, thermal properties, tensile and arc erosion behaviors of the infiltrated alloys have been systematically investigated. The microstructure, grain size and phase constitution, as well as the electronic transfer of WMo solid solution were identified by SEM, XRD, EBSD and DFT calculation. The resulted WCu alloy doped with 10 wt%WMo showed enhanced tensile performance and highly improved arc dispersion effect. The mechanical strengthening and arc ablation mechanisms originating from the addition of WMo nanopowders were also discussed.
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