Interface structure in a WC-Co alloy co-doped with VC and Cr3C2

Lay, S.Institut polytechnique de Grenoble (Grenoble INP),Grenoble Institute of Technology (Grenoble INP) (författare)

The effect of carbide additions is investigated at the atom scale by studying the interface between the cubic carbide phase and the WC prismatic facet in a VC Cr 3 C 2 co-doped WC Co alloy using high-resolution transmission electron microscopy. The alloy was prepared from WC powder about 0.5 lm in size and sintered at 1400°C for 2 h. The orientation relationship between WC and the MC carbide at the prismatic facet of WC is the same orientation as the one found at a WC/(Cr, W)C interface in Cr 3 C 2 -doped alloys. the image of WC shows triangular patterns indicating the position of the C atomic columns in this crystal. In MC crystal, some elongation of the bright areas parallel to the interface is observed on the simulation. The presence of dislocations at interfaces can be related to the parametric mismatch between the two neighboring crystals, to the presence of different stable structural units, or to an angular deviation between the crystals.

Loubradou, M.Institut polytechnique de Grenoble (Grenoble INP),Grenoble Institute of Technology (Grenoble INP) (författare)
Johansson, Sven,1981Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)f00svjo (författare)
Wahnström, Göran,1955Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)tfsgw (författare)
Institut polytechnique de Grenoble (Grenoble INP)Chalmers tekniska högskola (creator_code:org_t)

Ingår i:Journal of Materials Science: Springer Science and Business Media LLC47:3, s. 1588-15930022-24611573-4803

Av författaren/redakt...: Lay, S.; Loubradou, M.; Johansson, Sven, ...; Wahnström, Göran ...

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