Some Properties of TaC-Base Cemented Carbides

Abstract

The mechanical properties, tone of color, resistance to corrosion, etc., of TaC-10%Ni(Co) alloys and of TaC-10%Ni alloys with another addition carbides were studied.
It was found that the strength of TaC-Ni alloy was superior, in particular in the alloy with low carbon content, to that of TaC-Co alloy, and moreover it was remarkably improved with increasing amount of addition Mo₂C up to 10 mol% in carbides. It was concluded that the alloys such as low carbon TaC-Mo₂C-Ni, TaC-NbC-Mo₂C-Ni and TaC-NbC-Mo₂C-Ni-Cr alloys (NbC<30 mol% in TaC plus NbC, Cr ?? 1.7 mol%) would be excellent in the above mentioned properties.