Powder metallurgy processes – Powder metallurgy processes with heating or sintering – Powder pretreatment
Reexamination Certificate
2005-06-01
2010-11-16
Wyszomierski, George (Department: 1793)
Powder metallurgy processes
Powder metallurgy processes with heating or sintering
Powder pretreatment
C419S063000, C419S066000
Reexamination Certificate
active
07833472
ABSTRACT:
An article is prepared by furnishing a plurality of powder particle substrates made of a substrate metal, providing a nonmetallic precursor of a metallic coating material, wherein the metallic coating material comprises an alloying element that is thermophysically melt incompatible with the substrate metal, contacting the powder particle substrates with the nonmetallic precursor, chemically reducing the nonmetallic precursor to form coated powder particles comprising the powder particle substrates having a surface-enriched layer of the metallic coating material thereon without melting the powder particle substrates, and processing the coated powder particles to form the article, without melting the powder particle substrates.
REFERENCES:
patent: 2799570 (1957-07-01), Reed et al.
patent: 2828199 (1958-03-01), Findlay
patent: 3449115 (1969-06-01), Galmiche et al.
patent: 4373947 (1983-02-01), Buttner et al.
patent: 4381942 (1983-05-01), Blum et al.
patent: 4452830 (1984-06-01), Yoshizumi
patent: 4525206 (1985-06-01), Soled et al.
patent: 4687632 (1987-08-01), Hurd et al.
patent: 4820339 (1989-04-01), Bienvenu et al.
patent: 4860567 (1989-08-01), Askey et al.
patent: 4892579 (1990-01-01), Hazelton
patent: 4894086 (1990-01-01), Heuther et al.
patent: 4975333 (1990-12-01), Johnson et al.
patent: 5032176 (1991-07-01), Kametani et al.
patent: 5240742 (1993-08-01), Johnson et al.
patent: 5322666 (1994-06-01), Watwe
patent: 5372629 (1994-12-01), Anderson et al.
patent: 5470401 (1995-11-01), McCallum et al.
patent: 5779761 (1998-07-01), Armstrong et al.
patent: 5911865 (1999-06-01), Yih
patent: 5930580 (1999-07-01), Everett
patent: 5958106 (1999-09-01), Armstrong et al.
patent: 6010610 (2000-01-01), Yih
patent: 6540811 (2003-04-01), Hosoe et al.
patent: 6582651 (2003-06-01), Cochran, Jr. et al.
patent: 6737017 (2004-05-01), Woodfield et al.
patent: 6811881 (2004-11-01), Clough
patent: 6849229 (2005-02-01), Ott et al.
patent: 2003/0039860 (2003-02-01), Cheon et al.
patent: 2004/0118245 (2004-06-01), Ott et al.
patent: 2004/0159185 (2004-08-01), Shamblen et al.
patent: 2004/0208773 (2004-10-01), Woodfield
patent: EP0652299 (1995-05-01), None
patent: 2002339006 (2002-11-01), None
patent: 2004027242 (2004-01-01), None
patent: WO 9964638 (1999-12-01), None
Wu Ming-Fang, Yu Chun, Yu Zhi-Shui, Li Rui-Feng; Formation Process of Liquid in Interface of Ti/Cu Contact Reaction Couple; Trans. Nonferrous Met. Soc. China vol. 15 No. 1 Article ID: 1003-6326 (2005) 01-0125-05; Feb. 2005.
Vahlas C., et al., “Fluidization, Spouting, and Metal-Organic CVD of Platinum Group Metals on Powders”, Chemical Vapor Deposition, vol. 8, No. 4, Jul. 2002, pp. 127-144, XP001122587, Wiley-VCH Verlag GmbH, D-69469, Weinheim, DE.
Doyle, Eoghan T. M. et al: “Carbothermic reduction of nickel-cobalt-chromium oxide mixture for the production of NiCoCr superalloy powder” EPD Congr. 1992, Proc. Symp. TMS Annu. Meet., 745-58. Editor(s): Hager, John P. Publisher: Miner. Met. Mater. Soc., Warrendale, PA. CODEN: 58HHA7, 1992, XP0009029023.
Okabe, T.H.: “Electrochemical Deoxidation of Titanium” Metallurgical Transactions B, vol. 24B, Jun. 1993, pp. 449-455, XP000381332 cited in the application abstract; figures 1,3; table 1 par. I Introduction, paragraphs 1, 2, 5; par. II Principle: par. III, A Experimental, Starting materials; par. V, A Discussion, Deoxidation Reaction, paragraph 3.
Ackerman John Frederick
Bain Kenneth Rees
Buczek Matthew Bernard
Gigliotti Michael Francis Xavier
Groh Jon Raymond
General Electric Company
McNees Wallace & Nurick LLC
Wyszomierski George
Zhu Weiping
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