Title: Developments in cermet design, technology and performance

Authors: Jakob Kübarsepp; Jüri Pirso; Kristjan Juhani; Mart Viljus

Addresses: Department of Materials Engineering, Tallinn University of Technology, Ehitajate tee 5, 19086, Tallinn, Estonia ' Department of Materials Engineering, Tallinn University of Technology, Ehitajate tee 5, 19086, Tallinn, Estonia ' Department of Materials Engineering, Tallinn University of Technology, Ehitajate tee 5, 19086, Tallinn, Estonia ' Centre for Materials Research, Tallinn University of Technology, Ehitajate tee 5, 19086, Tallinn, Estonia

Abstract: This paper reviews developments in the research of cermets, related technologies and their mechanical and tribological (erosion abrasive wear resistance) characterisation. The aim is to enhance the performance and reliability of cermets and widen their application areas. Cermet technologies (ceramic-metal composites), such as TiC-based bonded with Ni- and Fe-alloys and Cr₃C₂-based bonded with Ni-alloys, are analysed. Focus is on the influence of different sintering modes: vacuum sintering, sinter/HIP and sinter + HIP (in different cycle) on the performance and reliability of TiC- and Cr₃C₂-based cermets. The structure, mechanical characteristics (hardness, transverse rupture strength) and wear resistance (erosive and abrasive wear) of the developed cermets are characterised.

Keywords: cermets; sintering modes; vacuum sintering; pressure assisted sintering; HIP; hot isostatic pressing; mechanical characteristics; abrasive wear; erosion; cermet design; cermet technology; cermet performance; reliability; ceramic-metal composites; hardness; transverse rupture strength.

DOI: 10.1504/IJMPT.2014.064046

International Journal of Materials and Product Technology, 2014 Vol.49 No.2/3, pp.160 - 179

Received: 29 Apr 2013
Accepted: 06 Feb 2014
Published online: 30 Aug 2014 *

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