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

F.T.C. Lima; Guerold Sergueevitch Bobrovinitchii; Marcello Filgueira

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

Paper Titles

Cellular Concrete with Addition of Aluminum Recycled Foil Powders
p.198

The Development of an Innovative P/M Oil Control Ring from Concept to Production Line
p.205

Densification Study of Titanium Powder Compacts
p.211

The Role of the Apparent Density on the Permeability of Porous Stainless Steel Parts
p.217

Study of the Diamond 5%wt- Cobalt Sintering under the HPHT Lowest Limit
p.225

Pressure Assisted WC-15%wt Co Sintering
p.231

Sinterability of High-Speed Steels M2, M3/2 and T15
p.238

High-Speed Steels Produced by Conventional Casting, Spray Forming and Powder Metallurgy
p.244

Microstructural Characterisation by Scanning Electron Microscopy of Spray Formed Al/SiC_p Matrix Composite
p.251

HomeMaterials Science ForumMaterials Science Forum Vols. 498-499Study of the Diamond 5%wt- Cobalt Sintering under...

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

Abstract:

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.