Powder metallurgy processes – Powder metallurgy processes with heating or sintering
Patent
1994-02-02
1995-03-14
Walsh, Donald P.
Powder metallurgy processes
Powder metallurgy processes with heating or sintering
419 30, 419 31, 419 35, 419 38, 419 53, 419 55, B22F 316
Patent
active
053975308
ABSTRACT:
A method for heating metal powder, e.g., iron powder, comprises irradiating the powder with microwaves. The powder may be coated with various materials to enhance the heating effects of the microwave. For example, the powder may be coated with a non-emissive material, such as a ceramic material. The powder may also be coated with a dipole material, such as water or plastic, or a dielectric material.
REFERENCES:
patent: 2299192 (1942-10-01), Tormyn
patent: 3570391 (1971-03-01), Rejler
patent: 3645728 (1972-02-01), Hrinevich, Jr.
patent: 3989518 (1976-11-01), Rueckl
patent: 4345983 (1982-08-01), Wan
patent: 4452756 (1984-06-01), McLeod
patent: 4559429 (1985-12-01), Holcombe
patent: 4574038 (1986-03-01), Wan
patent: 4585619 (1986-04-01), Westin
patent: 4666775 (1987-05-01), Kim et al.
patent: 4689458 (1987-08-01), Levendusky et al.
patent: 4735591 (1988-04-01), Branovich et al.
patent: 4840767 (1989-06-01), Branovich et al.
patent: 4849020 (1989-07-01), Osborne et al.
patent: 4857266 (1989-08-01), Sheinberg et al.
patent: 4865921 (1989-09-01), Hollenberg et al.
patent: 4883936 (1989-11-01), Maynard et al.
patent: 4892579 (1990-01-01), Hazelton
patent: 4895699 (1990-01-01), Branovich et al.
patent: 4908246 (1990-03-01), Fredricks et al.
patent: 4911626 (1990-03-01), Branovich et al.
patent: 4914717 (1990-04-01), Gibbon
patent: 4938673 (1990-07-01), Adrian
patent: 4942278 (1990-07-01), Sheinberg et al.
patent: 4946499 (1990-08-01), Sakuranda et al.
patent: 4952360 (1990-08-01), Gibbon
patent: 5030820 (1991-07-01), Gibbon
patent: 5072087 (1991-10-01), Apte et al.
patent: 5092706 (1992-03-01), Bowen et al.
patent: 5094238 (1992-03-01), Gibbon
patent: 5134260 (1992-07-01), Piehler et al.
patent: 5137587 (1992-08-01), Schultz et al.
patent: 5137588 (1992-08-01), Wecker et al.
patent: 5211896 (1993-05-01), Ward et al.
William L. Wade, Jr., "Method of Forming Ferrite Impregnated Resins For Microwave Measurements," Army Electronics Command, Fort Monmouth, N.J., Availability: IEEE Transactions on Magnetics, v. MAG-10, n1, pp. 96-97, Mar. 1974.
Ostwald, R., "Thin Polymer Layers for Corrosion Protection of Microwave Components," Werkstoffe und Korrosion, Aug, 1990, 41 (8), 451-456.
A. Harrison, "The Use of Formable Powder Technology for Precoat Applications," Powder Coating '90, Cincinnati, Ohio, 9-11 Oct. 1990, Gardner Publications, 6.1-6.22.
J. E. Japka, "Metallurgical Characterization of Iron Micropowders," Aerospace and Defense Technologies, 1991 P/M, Tampa, Florida, USA, 4-6 Mar. 1991, Metal Powder Industries Federation, pp. 79-91.
T. E. Phillips, et al., "Substitution of Copper by Iron in the Superconducting Ceramic Oxide EuBa sub 2 Cu sub 3 0 sub y: Structure, Electrical Conductivity and Microwave Response," J. Supercon., Jun. 1989, 2 (2), 306-316.
K. Satoh et al.; "A New Method of Microwave Coremaking: The K--Y Process," Transactions of the American Foundrymen's Society, vol. 90, Chicago, Ill., 19-12 Apr. 1982, pp. 445-452.
L. E. Murr, "Explosive Processing of Bulk Superconductors," Materials and Manufacturing Processes, 1991, 6 (1), pp. 1-32.
L. Kempfer, "Forming the Pieces of the Ceramic Puzzle," Mater. Eng. (Cleveland), Jun. 1990, 107 (6), 23-26.
Hackler, C. L., "Latest Porcelain Enamel Application Technology For Appliance Components," Ceram. Eng. Sci. Proc., 1988, pp. 375-379.
Rowson, N. A., "Desulphurisation of Coal Using Low Power Microwave Energy," Miner. Eng., 1990, 3 (3-4), pp. 363-368.
S. Iwama, "Preparation of Ultrafine Nitride Particles by Applying Microwave Plasma to Gas Evaporation Technique," J. Soc. Mater. Sci., Japan, Nov. 1987, 36 (410), 1162-1166.
Taylor Lyman, ed., Metals Handbook, vo. 1, "Properties and Selection of Metals," p. 62, (American Society for Metals, 1961).
Ancorsteel 1000, 1000B, 1000C, "Atomized Steel Powders For High Performance Powder Metallurgy Applications," Hoeganaes Corporation, 1990.
Ancorsteel 4600V, "Atomized Low Alloy Steel Powder For Parts Requiring High Hardenability," Hoeganaes Corporation, 1988.
Arvidsson Johan
Narasimhan K. S. V. L.
Porter, Jr. W. John
Rutz Howard G.
Carroll Chrisman D.
Hoeganaes Corporation
Walsh Donald P.
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