Constituting Phases During Liquid Phase Sintering For WC-Co Based Cemented Carbides With Metal Carbides On Calculated Phase Diagrams

Authors:

Masaru Kawakami (Fujidie Co., ltd, Japan)
Sota Terasaka (Tohoku University, Japan)

Abstract:

Phase diagrams of C-Co-W-M (M: V, Ti, Ta, etc.) quaternary system were drawn using software for thermodynamic calculation in multicomponent systems. Pseudo-ternary phase diagrams of triangular prism were constructed by superimposing the Co-WC-MC sections of the tetrahedral quaternary phase diagram for each temperature. The vertical sections with a constant content of Co for the triangular prismatic diagram showed pseudo-binary phase diagrams of (MC-Co)-(WC-Co). The pseud-binary phase diagrams revealed constituting phases during sintering and solubility limits of metal carbides in solid and liquid Co phases. Formation of segregated phases of metal carbides for specified amount of the metal carbides was considered using the pseud-binary phase diagrams.

DOI:

https://doi.org/10.59499/EP256767708