Composite structure having a non-planar interface and method of making same

(19)

(11)

EP 1 716 948 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	20.12.2006 Bulletin 2006/51

(43)	Date of publication A2:
	02.11.2006 Bulletin 2006/44

(21)	Application number: 06251484.9

(22)	Date of filing: 21.03.2006

(51)

International Patent Classification (IPC):

B22F 7/08^(2006.01)
E21B 10/573^(2006.01)

B22F 7/04^(2006.01)

(84)	Designated Contracting States:
	AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
	Designated Extension States:
	AL BA HR MK YU

(30)

Priority:

26.04.2005 US 908040

(71)	Applicant: Grant Prideco LP
	Houston, Texas 77060 (US)

(72)	Inventors:
	Sreshta, Harold A. Houston, Texas 77099 (US) Drake, Eric F. Galveston, Texas 77554 (US)

(74)	Representative: Bailey, Richard Alan
	Marks & Clerk 27 Imperial Square Cheltenham, GL50 1RQ Cheltenham, GL50 1RQ (GB)

(54)	Composite structure having a non-planar interface and method of making same

(57) A composite structure includes a first portion comprising a first metallic material, a monolayer of particles extending into and bonded with the first portion, and a second portion comprising a second material, the second portion bonded with the monolayer of particles and extending into interstices between the particles. A method for fabricating a composite structure includes bonding a monolayer of particles to a first portion comprising a first metallic material, such that the monolayer of particles extends into the first portion and bonding a second portion comprising a second material to the monolayer of particles, such that the second portion extends into interstices between the particles.

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