Spark Plasma Sintering of WC-Based 10wt%Co Hard Alloy: A Study of Sintering Kinetics and Solid-Phase Processes

Author:

Buravleva Anastasia A.,Fedorets Alexander N.,Vornovskikh Anastasia A.,Ognev Alexey V.,Nepomnyushchaya Valeria A.,Sakhnevich Vladimir N.,Lembikov Aleksey O.,Kornakova Zlata E.,Kapustina Olesya V.,Tarabanova Anna E.,Reva Victor P.,Buravlev Igor Yu.ORCID

Abstract

The paper describes the method for producing WC-10wt%Co hard alloy with 99.6% of the theoretical density and a Vickers hardness of ~1400 HV 0.5. Experimental data on densification dynamics, phase composition, morphology, mechanical properties, and grain size distribution of WC-10%wtCo using spark plasma sintering (SPS) within the range of 1000–1200 °C are presented. The high quality of the product is provided by the advanced method of high-speed powder mixture SPS-consolidation at achieving a high degree of densification with minimal calculated grain growth at 1200 °C.

Publisher

MDPI AG

Subject

General Materials Science

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