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US 6,814,927 B2Granted
Fabrication method of nanostructured tungsten carbide bulk material
AssigneeIndustrial Technology Research Institute
InventorsShih-Chieh Liao, Song-Wein Hong, Geoffrey Wen Tai Shuy, Jin-Ming Chen, Thiraphat Vilaithong, Lang Deng Yu
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Abstract
A nanostructured tungsten carbide bulk material, sintered from tungsten carbide and metal such as cobalt nano-powders, comprises a tungsten carbide and a metallic binder such as cobalt phases. The tungsten carbide phase has nanostructures comprising a plurality of dislocations, twins, stacking faults, dislocation cells, nano-subgrains with preferred orientation or texture, or a combination thereof.
Claims6
A fabrication method of a nanostructured tungsten carbide bulk material, comprising:
- sintering tungsten carbide and cobalt nano-powders to form a tungsten carbide bulk;
- and
- performing implantation with the tungsten carbide bulk using N+ and Ar+ ions to form nanostructures in the sub-surface region of the tungsten carbide phase thereof, wherein the nanostructures comprise a plurality of dislocations, twins, stacking faults, dislocation cells, nano-subgrains with preferred orientation or texture, or a combination thereof.
Dependencies are inferred from the claim text.