Stock material or miscellaneous articles – Composite – Of metal
Patent
1996-04-04
1999-09-07
Turner, Archene
Stock material or miscellaneous articles
Composite
Of metal
428212, 428472, 428698, 428704, 51307, 51309, 407119, B32B 904
Patent
active
059485418
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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Antolin Stanislav
Kennametal Inc.
Turner Archene
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