Boron and nitrogen containing coating and method for making

Details Boron and nitrogen containing coating and method for making Boron and nitrogen containing coating and method for making

1998-12-09

2000-08-01

Turner, Archene

Stock material or miscellaneous articles

Composite

Of metal

428212, 428472, 428698, 428704, B32B 702

Patent

active

060964367

ABSTRACT:
A coating scheme comprising a boron and nitrogen containing layer that satisfactorily adheres to a substrate is disclosed. The satisfactorily adherent coating scheme comprises a base layer, a first intermediate layer, a second intermediate layer and the boron and nitrogen containing layer. The coating scheme is compatible with tooling for drilling, turning, milling, and/or forming hard, difficult to cut materials. The coating scheme has been applied to cutting inserts comprised of cermets or ceramics using PVD techniques. The boron and nitrogen layer preferably comprises boron nitride and, more preferably, cubic boron nitride.

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