Sintering of Cubic Boron Nitride Using Titanium Based Binders

Guerold Sergueevitch Bobrovinitchii; Ana Lúcia Diegues Skury; Sérgio Neves Monteiro; Marcia G. de Azevedo

doi:10.4028/www.scientific.net/MSF.727-728.446

Paper Titles

Study of the Elasticity Module through Indentation Instrumented Technical of AlCuFeB Quasicrystalline Alloy
p.424

Magnetic Properties and Hardness of Nanostructured WC-Co Cemented Carbide
p.430

Microstructure and Wear of a Cu-Si-B Alloy and Diamond Composites Obtained in High Pressure and High Temperature Conditions
p.436

Modeling the Densification of 316L Stainless Steels
p.440

Sintering of Cubic Boron Nitride Using Titanium Based Binders
p.446

Liquid Phase Migration during Diamond Powder Sintering by Infiltration Method
p.450

Plasma Sintering of the Steel Reinforced with Nanostructured Carbides
p.456

High-Pressure Assisted Sintering of Ti-20Si-10B and Ti-10Si-5B Powders
p.462

Overspray Powder Characterization of Fe-Based Glassy Alloy
p.468

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Sintering of Cubic Boron Nitride Using Titanium Based Binders

Abstract:

As a superhard material, next to diamond, the cubic boron nitride (cBN) is of great interest owing to its efficiency in machining ferrous alloys. In nature, only the hexagonal, hBN, exists. In practice, high pressure and high temperature (HPHT) synthesis has to be used to produce small cBN crystals. For larger size machining inserts, the powder-like cBN crystals need to be sintered at specific HPHT conditions using a metallic binder. The present work investigates the sintering of cBN inserts using a Ti-based binder at 7 GPa of pressure and 1800°C. The results disclosed relatively high hardness for the inserts and revealed their effectiveness in machining high strength steels.