Study of the Diamond 5%wt- Cobalt Sintering under the HPHT Lowest Limit

Abstract:

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Diamond composites consist in the diamond powder mixed with a binder phase, which sintering is carried out by means of the High Pressure-High Temperature (HPHT) techniques. These composites are widely used in the cutters of drillers for the oil industry, and as inserts for machining. In this work was used a mix of diamond + 5% weight cobalt. Sintering was accomplished under the HPHT Lowest Limit conditions: P=7GPa and T=15000C for times of t=10-30-60 seconds, aiming at the densification study under these conditions. Results are shown as a function of the sintered micro-structure evolution, cobalt influence on densification, graphitization, and hardness of the sintered parts.

Info:

Periodical:

Materials Science Forum (Volumes 498-499)

Edited by:

Lucio Salgado and Francisco Ambrozio Filho

Pages:

225-230

DOI:

10.4028/www.scientific.net/MSF.498-499.225

Citation:

F.T.C. Lima et al., "Study of the Diamond 5%wt- Cobalt Sintering under the HPHT Lowest Limit", Materials Science Forum, Vols. 498-499, pp. 225-230, 2005

Online since:

November 2005

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Price:

$35.00

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