Back to results
US 11,976,345 B2Granted
PCBN sintered compact
AssigneeDiamond Innovations, Inc.
InventorLawrence Dues
Life of this patent
Estimating the term…
Abstract
The present application is a new improvement in the fine-grained cubic boron nitride sintered compact which may be employed to manufacture a cutting tool. The compact contains at least 80 vol % cBN with a metallic binder system and is sintered under HPHT conditions. The improvement incorporates alloys of aluminum in the metallic binder system.
Claims9
A sintered body, comprising:
- a cBN layer, comprising 80-95 vol % cBN;
- an aluminum source comprising at least one of titanium aluminide (TiAl), nickel aluminide (Ni3Al), or aluminum (Al);
- an interface;
- a substrate comprising cemented tungsten carbide (WC);
- and
- at least one Group VIII metal, and at least one Group V, Group VI, or Group VII metal,
- wherein chromium (Cr) is present at the interface as an alloy of Cr and cobalt (Co) in a diffusion layer extending from the interface into the cBN layer.
4 more elements
Dependencies are inferred from the claim text.