Specialized metallurgical processes – compositions for use therei – Compositions – Consolidated metal powder compositions
Reexamination Certificate
2004-08-12
2009-10-20
King, Roy (Department: 1793)
Specialized metallurgical processes, compositions for use therei
Compositions
Consolidated metal powder compositions
C075S252000
Reexamination Certificate
active
07604678
ABSTRACT:
The present invention relates to improved metallurgical powder compositions, methods for the preparation of those compositions, and methods for using those compositions to make compacted parts. The metallurgical powder compositions comprise a base metal powder, such as an iron-based or nickel-based powder, to which is added or blended an organometallic lubricant. Organometallic lubricants are monomers or polymers having a metal-carbon bond or metalloid-carbon bond on the polymer backbone, which degrade into physical property enhancing compounds upon heating. The metallurgical powder compositions can also comprise small amounts of other commonly used alloying powders, binding agents, and lubricants.
REFERENCES:
patent: 4190441 (1980-02-01), Tengzelius et al.
patent: 4483905 (1984-11-01), Engstrom
patent: 4834800 (1989-05-01), Semel
patent: 4935199 (1990-06-01), Nishio et al.
patent: 5069714 (1991-12-01), Gosselin
patent: 5108493 (1992-04-01), Causton
patent: 5162558 (1992-11-01), Ardaud et al.
patent: 5204431 (1993-04-01), Sartori et al.
patent: 5290336 (1994-03-01), Luk
patent: 5298055 (1994-03-01), Semel et al.
patent: 5330792 (1994-07-01), Johnson et al.
patent: 5368630 (1994-11-01), Luk
patent: 5455000 (1995-10-01), Seyferth et al.
patent: 5498276 (1996-03-01), Luk
patent: 5641817 (1997-06-01), Aghajanian et al.
patent: 5892164 (1999-04-01), Garg et al.
patent: 6133396 (2000-10-01), Laine et al.
patent: 6217984 (2001-04-01), Bruxvoort et al.
patent: 6284060 (2001-09-01), Matsutani et al.
patent: 6451082 (2002-09-01), Ozaki et al.
patent: 6627559 (2003-09-01), Shindo
patent: 2001/0028859 (2001-10-01), Ozaki et al.
patent: 2004/0081574 (2004-04-01), Poszmik et al.
patent: 2005/0238523 (2005-10-01), Skoglund et al.
patent: 0 554 009 (1997-08-01), None
patent: 2 315 115 (1998-01-01), None
patent: WO 99/20689 (1999-04-01), None
patent: WO 2004/037467 (2004-05-01), None
Yajima, Seishi et al.; Heat-resistant Fe-Cr alloy with polycarbosilane as binder, 1976, Nature, vol. 264, 237-238.
Seyferth, Dietmar et al.; Application of Preceramic Polymers in Powder Metallurgy: Their Use as Low-Loss Binders and for the in Situ Formation of Dispersed Ceramic Phases in the Metal Matrix, Chem. Mater. 1994, 6, 10-12.
Powder metal Technologies and Application, vol. 7, Powder Metallurgy Method for Rapid Prototyping.
Baldus, H.P. et al., “Synthesis of Advanced Ceramics in the Systems Si-B-N and Si-B-N-C Employing Novel Precursor Compounds”,Materials Research Society Symposium, 1992, 271, 821-827.
Baldus, H.P. et al., “Studies on SiBN(C)-Seramics: Oxidation- and Crystallization Behavior Lead the Way to Applications”,Materials Research Society Symposium Proceedings, 1994, 346, 617-622.
Bill, J. et al., “Precursor-Derived Covalent Ceramics”,Advanced Materials, 1995, 7(9),775-787.
C.W. Whitemarsh, et al., “Synthesis and Structure of a Highly Branched Polycarbosilane Derived from (Chloromethyl) trichlorosilane”,Organometallics, 1991, 10, 1336-1344.
Dorn, H. et al, “Transition Metal-Catalyzed Formation of Phosphorus-Boron Bonds: A New Route to Phosphinoborane Rings, Chains, and Macromolecules”,J. Am. Chem. Soc., 2000, 122, 6669-6678.
Dorn, H. et al., “Rhodium-Catalyzed Formation of Phosphorus-Boron Bonds: Synthesis of the First High Molecular Weight Poly(phosphinoborane)”,Angew. Chem. Int. Ed. Engl., 1999, 38(22),3321-3323.
Mark, J.E. et al.,Inorganic Polymers, 1992, 1 thru 272 (Entire Book).
Muller, A. et al., “Si-B-C-N Ceramic Precursors Derived from Dichlorodivinylsilane and Chlorotrivinylsilane. 1. Precursor Synthesis”,Chem Mater, 2002, 14, 3398-3405.
Sorarù, G.D., “Silicon Oxycarbide Glasses from Gels”,Journal of Sol-Gel Science and Technology, 1994, 2, 843-848.
Yamamura, T. et al., “Development of a New Continuous Si-Ti-C-O Fibre Using an Organometallic Polymer Precursor”,Journal of Materials Science, 1988, 23, 2589-2594.
Hoeganaes Corporation
King Roy
Mai Ngoclan T
Woodcock & Washburn LLP
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