Specialized metallurgical processes – compositions for use therei – Compositions – Loose particulate mixture containing metal particles
Reexamination Certificate
2007-12-18
2007-12-18
King, Roy (Department: 1742)
Specialized metallurgical processes, compositions for use therei
Compositions
Loose particulate mixture containing metal particles
C075S351000, C075S369000, C148S513000, C419S031000, C419S036000, C419S038000, C428S570000
Reexamination Certificate
active
11098693
ABSTRACT:
In contrast to current industrial practice where alloying powders are added to starting powder metallurgy compositions either as powder mixtures or fully prealloyed powders, the present invention posits a diffusion bonded nickel-copper precursor additive mixture for direct one step addition to the starting powder metallurgy master blend composition. Segregation and dusting are substantially reduced and the mechanical properties of the resultant compact are improved.
REFERENCES:
patent: 2853403 (1958-09-01), Bryan et al.
patent: 3494747 (1970-02-01), Burr
patent: 3832156 (1974-08-01), Wilson et al.
patent: 4238221 (1980-12-01), Sevensson
patent: 4483905 (1984-11-01), Engström
patent: 4834800 (1989-05-01), Semel
patent: 5069714 (1991-12-01), Gosselin
patent: 6068813 (2000-05-01), Semel
patent: 2003/0103858 (2003-06-01), Baran et al.
patent: 1162702 (1966-09-01), None
patent: 1162702 (1969-08-01), None
W. Brian James, “Ferrous Powders—How Alloying Method Influences Sintering”, MPIF Sintering Seminar, Pittsburgh, Oct. 1991.
T. Singh et al., “Nickel-Copper Interactions in P/M Steels”, Metal Powder Industries Federation, Dec. 2004.
Campbell Scott Thomas
Singh Tajpreet
Stephenson Thomas Francis
Yang Ouan Min
Inco Limited
King Roy
Mai Ngoclan T.
Steen Edward A.
LandOfFree
Diffusion bonded nickel-copper powder metallurgy powder does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Diffusion bonded nickel-copper powder metallurgy powder, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Diffusion bonded nickel-copper powder metallurgy powder will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3843673