Specialized metallurgical processes – compositions for use therei – Compositions – Loose particulate mixture containing metal particles
Patent
1988-11-02
1990-05-22
Yee, Deborah
Specialized metallurgical processes, compositions for use therei
Compositions
Loose particulate mixture containing metal particles
75244, 75246, 419 12, 419 23, 419 32, 419 57, 419 66, 419 39, B22F 100
Patent
active
049274619
ABSTRACT:
The machinability characteristics of P/M ferrous sintered compacts are improved when the compact is prepared from a ferrous powder having a maximum particle size less than about 300 microns, and from at least about 0.01 weight percent of a boron nitride powder comprising agglomerates of irregular-shaped, submicron particles.
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patent: 3451809 (1969-06-01), Raman et al.
patent: 4566905 (1986-01-01), Akashi et al.
Trudel et al., Selecting Additives to Improve Machinability of Ferrous P/M Parts, Jun. '84, Int'l P/M Conf/Exhib in Toronto.
Capus, A New Era for Iron & Steel Powders at QMP Ltd., 1987, Int'l Journal of Powder Metallurgy, vol. 23, No. 1.
Powder Metallurgy, Kirk-Othmer's Encyl. of Chem. Tech., vol. 19, 3rd Ed., pp. 28-62.
ESK Boron Nitride Powder Product Specification (Informal Copy in German).
Ullmann's, Encyclopedia of Industrial Chemistry, 5th Ed., vol. A4, 300:7.
Special Ceramics, The Preparation and Properties of Boron Nitride, 144:67.
Ciloglu Cavit
Gagne Martin
Laraque Edy
Poirier Joel
Tremblay Sylvain
Quebec Metal Powders, Ltd.
Yee Deborah
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