Title

STUDY OF THE PROPERTIES OF METAL MATRIX 25.2%FE- 49.5%CU-24.1%CO USED IN DIAMOND TOOLS

STUDY OF THE PROPERTIES OF METAL MATRIX 25.2%FE- 49.5%CU-24.1%CO USED IN DIAMOND TOOLS

Authorship

Oliveira, Hellen Cristine Prata de; Pires, Isis London de Almeida; Abreu, Roberto Vicente Silva de; Batista, Adriano Correa; Filgueira, Marcello

Oliveira, Hellen Cristine Prata de

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Pires, Isis London de Almeida

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Abreu, Roberto Vicente Silva de

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Batista, Adriano Correa

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Filgueira, Marcello

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DOI

10.5151/2594-5327-23611

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Abstract

Most of the alloys used as bonding matrix in diamond tools show a high content of cobalt - which is undesirable due to a series of reasons. In the last decade, some attempts were made towards the reduction of the Co content in these alloys. NEXT 100® alloy (25.2%Fe- 49.5%Cu-24.1%Co) by Eurotungstene is an example of it. This study aims to characterize some mechanical properties of the NEXT 100® - this is a comercial alloy widely used as bonding matrix for diamonds in cutting tools, and the informations about its properties are scarce in the literature. The metallic powders were hot pressed in a graphite matrix at 35MPa/800°C/3 minutes. In these sintered samples, it was made wear resistance and hardness HRB tests. Densification and compression test were performed. It was determined that the NEXT 100® alloy obtained by hot pressed has good mechanical properties and high densification.

Most of the alloys used as bonding matrix in diamond tools show a high content of cobalt - which is undesirable due to a series of reasons. In the last decade, some attempts were made towards the reduction of the Co content in these alloys. NEXT 100® alloy (25.2%Fe- 49.5%Cu-24.1%Co) by Eurotungstene is an example of it. This study aims to characterize some mechanical properties of the NEXT 100® - this is a comercial alloy widely used as bonding matrix for diamonds in cutting tools, and the informations about its properties are scarce in the literature. The metallic powders were hot pressed in a graphite matrix at 35MPa/800°C/3 minutes. In these sintered samples, it was made wear resistance and hardness HRB tests. Densification and compression test were performed. It was determined that the NEXT 100® alloy obtained by hot pressed has good mechanical properties and high densification.

Keywords

Next 100® alloy; Hot pressed; Properties.

Next 100® alloy; Hot pressed; Properties.