Powder metallurgy processes – Powder metallurgy processes with heating or sintering – Metal and nonmetal in final product
Reexamination Certificate
2007-12-27
2010-10-05
King, Roy (Department: 1793)
Powder metallurgy processes
Powder metallurgy processes with heating or sintering
Metal and nonmetal in final product
C419S031000, C419S033000, C419S055000
Reexamination Certificate
active
07807099
ABSTRACT:
Earth-boring tools for drilling subterranean formations include a particle-matrix composite material comprising a plurality of silicon carbide particles dispersed throughout a matrix material, such as, for example, an aluminum or aluminum-based alloy. In some embodiments, the silicon carbide particles comprise an ABC—SiC material. Methods of manufacturing such tools include providing a plurality of silicon carbide particles within a matrix material. Optionally, the silicon carbide particles may comprise ABC—SiC material, and the ABC—SiC material may be toughened to increase a fracture toughness exhibited by the ABC—SiC material. In some methods, at least one of an infiltration process and a powder compaction and consolidation process may be employed.
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Choe Heeman
Eason Jimmy W.
Overstreet James L.
Stevens John H.
Westhoff James C.
Baker Hughes Incorporated
King Roy
Mai Ngoclan T
TraskBritt
LandOfFree
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