Barrier coated granules for improved hardfacing material...

Details Barrier coated granules for improved hardfacing material... Barrier coated granules for improved hardfacing material...

2008-06-05

2011-11-15

Bagnell, David (Department: 3672)

Boring or penetrating the earth

Bit or bit element

Specific or diverse material

C175S331000

Reexamination Certificate

active

08056652

ABSTRACT:
A hardfacing composition for a drill bit that includes an abrasive phase comprising a plurality of abrasive particles having a barrier coating deposited by atomic layer deposition disposed thereon; and a binder alloy is disclosed. Drill bits having hardfacing compositions that include an abrasive phase comprising a plurality of abrasive particles having a barrier coating deposited by atomic layer deposition disposed thereon; and a binder alloy are also disclosed.

REFERENCES:
patent: 3379503 (1968-04-01), McKenna
patent: 3650714 (1972-03-01), Farkas
patent: 3663191 (1972-05-01), Kroder
patent: 4723996 (1988-02-01), Brunet et al.
patent: 4834963 (1989-05-01), Terry et al.
patent: 4960643 (1990-10-01), Lemelson
patent: 5089182 (1992-02-01), Findeisen et al.
patent: 5541006 (1996-07-01), Conley
patent: 5997248 (1999-12-01), Ghasripoor et al.
patent: 6138779 (2000-10-01), Boyce
patent: 6287360 (2001-09-01), Kembaiyan et al.
patent: 6372012 (2002-04-01), Majagi et al.
patent: 6469278 (2002-10-01), Boyce
patent: 6613383 (2003-09-01), George et al.
patent: 6908688 (2005-06-01), Majagi et al.
patent: 6913827 (2005-07-01), George et al.
patent: 2003/0024351 (2003-02-01), Pender et al.
patent: 2004/0105980 (2004-06-01), Sudarshan et al.
patent: 2005/0109545 (2005-05-01), Lockwood et al.
patent: 2008/0073127 (2008-03-01), Zhan et al.
J. R. Wank et al. Nanocoating individual cohesive boron nitride particles in a fluidized bed by ALD; Powder Technology 142, pp. 59-69 (2004).

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