Metal-diamond materials obtained by electric resistance sintering: microstructure, processing and mechanical properties

M. A. Lagos, J. Viñuela, I. Leizaola, I. Agote, A. Beranoagirre

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Metal-diamond tools are well established in the mining sector for the cutting of granite, marble and others. To date, the manufacturing process of diamond tools consists of at least two main steps (cold pressing and sintering by hot pressing or furnace sintering). This process takes several hours. This work presents the fabrication of metal-diamond tools by a very fast process, Electric Resistance Sintering. This method permits the pressing and densification of the pieces in few seconds and without protective atmosphere. This work presents the effect of the processing parameters on the microstructure and mechanical properties of the materials. The characterization of the products includes the microstructural analysis and hardness. It was possible to obtain good densification of the compacts and mechanical properties showed interesting results. Two different compositions were used. One of them was based in cobalt-diamond, a very well-known material for metal-diamond tools. In addition, another composition based in Fe-Cu-Ni was also tested.

Original languageEnglish
Title of host publicationEuro PM2021 Congress Proceedings
PublisherEuropean Powder Metallurgy Association (EPMA)
ISBN (Electronic)9781899072545
Publication statusPublished - 2021
Event2021 European Powder Metallurgy Congress and Exhibition, Euro PM 2021 - Virtual, Online
Duration: 18 Oct 202122 Oct 2021

Publication series

NameEuro PM2021 Congress Proceedings

Conference

Conference2021 European Powder Metallurgy Congress and Exhibition, Euro PM 2021
CityVirtual, Online
Period18/10/2122/10/21

Keywords

  • Electric Resistance Sintering
  • hard materials
  • mechanical properties
  • microstructure
  • substitution

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