Processing and Mechanical Properties of B₄C/Diamond Impregnated Fe/Co MMC

• Authors: K. Öksüz , M. Şimşir
• Languages of publication: EN

Abstracts

EN

Cobalt is currently used in the production of diamond reinforced metal matrix composites (i.e. stone-cutting tools). Herein, how sintering temperature and matrix composition influences the material properties of diamond reinforced MMCs was explored. The aim of this work is to produce diamond reinforced metal matrix composites based on Fe-Co compositions with and without B₄C are processed by a PM method using a hot pressing technique. The effects of Fe and B₄C additions on the characteristic of diamond impregnated Co matrix composites have been investigated. Samples reinforced with and without B₄C having two different compositions (different Fe/Co ratio) were produced under 25 MPa pressure and sintered at 1000°C temperature. After sintering, hardness tests were carried out and wear tests were performed by pin-on-disc. The results showed that addition of Fe caused slightly decrease in the hardness of the matrix. However, reinforcing with B₄C increased the hardness of the matrix. It is observed that wear resistance of B₄C reinforced Fe-Co metal matrix composite was greater than that of composites without reinforcement. SEM and EDX techniques were used to characterize the composites.

Keywords

EN

81.20.Ev; 81.05.ug; 88.30.mj; 81.40.Pq; 81.05.Ni

Discipline

• 81.05.Ni: Dispersion-, fiber-, and platelet-reinforced metal-based composites
• 88.30.mj: Composite materials
• 81.40.Pq: Friction, lubrication, and wear
• 81.05.ug: Diamond
• 81.20.Ev: Powder processing: powder metallurgy, compaction, sintering, mechanical alloying, and granulation

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2015
• Volume: 127
• Issue: 4
• Pages: 1139-1141

Dates

published

2015-04

Contributors

author

K. Öksüz

• Department of Metallurgical Materials Eng., Cumhuriyet University, 58140, Sivas, Turkey

author

M. Şimşir

• Department of Metallurgical Materials Eng., Cumhuriyet University, 58140, Sivas, Turkey

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Identifiers

DOI

10.12693/APhysPolA.127.1139