Effect of Decreasing of Cobalt Content in Properties for Diamond/Cemented Carbide Tools

Journal Article · Thu Mar 11 00:00:00 EST 2010 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3377813· OSTI ID:21371674

Waratta, A; Hamdi, M ^[1]; Ariga, T ^[2]

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1. Department of Design and Manufacture, Faculty of Engineering, University of Malaya (Malaysia)
2. Department of Materials Science, School of Engineering, Tokai University (Japan)

Powder metallurgy plays a role in manufacturing such as automotive and cutting tool applications. Diamond/cemented carbide tools are also made from this technique. Diamond particle and other matrix materials were employed in this study. The purpose is to investigate the physical and mechanical properties of different Cobalt (Co) content samples by using Taguchi's method. The materials used in the experiments were mixed by using a ball-mill machine. The mixed powders were pressed by conventional method. Then the green samples were sintered in a vacuum furnace. After reaching 500 deg. C, the samples were sintered with Argon (Ar) gas. The sintered samples were investigated density by immersion method, porosity by water saturation method, and hardness by Vicker hardness tester. It was found that with 59.5% Co content, plain diamond type, sintering temperature of 950 deg. C, sintering time of 40 minutes, and pressure of 625 MPa, density, porosity, and hardness got the best result in this study. From the Taguchi's analysis, the significant factors effected the performance were composition, sintering temperature, and sintering time.

• OSTI ID: 21371674
• Journal Information: AIP Conference Proceedings, Vol. 1217, Issue 1; Conference: ICAMN-2007: International conference on advancement of materials and nanotechnology, Langkawi, Kedah (Malaysia), 29 May - 1 Jun 2007; Other Information: DOI: 10.1063/1.3377813; (c) 2010 American Institute of Physics; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ARGON
CERAMICS
CERMETS
COBALT
CORROSION PROTECTION
CUTTING TOOLS
DIAMONDS
HARDNESS
MATRIX MATERIALS
POROSITY
POWDER METALLURGY
POWDERS
SINTERING
TEMPERATURE DEPENDENCE
VACUUM FURNACES
CARBON
COMPOSITE MATERIALS
ELEMENTS
EQUIPMENT
FABRICATION
FLUIDS
FURNACES
GASES
MATERIALS
MECHANICAL PROPERTIES
METALLURGY
METALS
MINERALS
NONMETALS
RARE GASES
TOOLS
TRANSITION ELEMENTS