Transition of W2C to WC during carburization of tungsten metal powder
Artikel i vetenskaplig tidskrift, 2018

The properties of cemented carbides are heavily influenced by the tungsten carbide (WC) powders used in its production. Overall particle size of the WC is most influential, however, in the medium- and coarse-grained tungsten carbide particle range the internal crystallographic structure of the polycrystalline WC is important as well. To investigate the crystal formation of WC and it's resulting structure, selected crystal growth experiments were performed. The transition of ditungsten carbide (W 2 C) into tungsten carbide (WC) during carburization of tungsten powder was studied. The experimental strategy was to obtain W 2 C along with WC within the growing carbide particles. Electron microscopy methods were utilized to study the growth mechanism during conversion of W 2 C into WC, and to detect the existence of preferred crystallographic orientations during the transition process.

Phase boundary

Carburization

WC

EBSD

W2C

Författare

Georg Mühlbauer

Wolfram Bergbau und Hütten AG

Gabriele Kremser

Wolfram Bergbau und Hütten AG

Andreas Bock

Wolfram Bergbau und Hütten AG

Eva Olsson

Chalmers, Fysik, Eva Olsson Group

W. D. Schubert

Technische Universität Wien

International Journal of Refractory Metals and Hard Materials

0263-4368 (ISSN) 2213-3917 (eISSN)

Vol. 72 141-148

Ämneskategorier

Oorganisk kemi

Materialkemi

Metallurgi och metalliska material

DOI

10.1016/j.ijrmhm.2017.12.018

Mer information

Senast uppdaterat

2018-04-12