Metallurgical apparatus – Means treating solid metal
Patent
1999-03-23
1999-11-23
Jenkins, Daniel J.
Metallurgical apparatus
Means treating solid metal
425 78, 29DIG31, B22F 312
Patent
active
059894873
ABSTRACT:
An apparatus for bonding a particle material to near theoretical density, includes a chamber, a punch and die assembly for supporting a particle material, plungers for applying shear and/or axial pressures, and a power supply for applying a current. In the first stage, a pulsed current of about 1 to 20,000 amps., is applied to the particle material for a predetermined time period, and substantially simultaneously therewith, a shear force of about 5-50 MPa is applied. In the second stage, an axial pressure of about less than 1 to 2,000 MPa is applied to the particle material for a predetermined time period, and substantially simultaneously therewith, a steady current of about 1 to 20,000 amps. is applied. The apparatus may be used to bond metallic, ceramic, intermetallic and composite materials to near-net shape, directly from precursors or elemental particle material without the need for synthesizing the material. The method may also be applied to perform combustion synthesis of a reactive material, followed by consolidation or joining to near-net shaped articles or parts. The apparatus may further be used to repair a damaged or worn substrate or part, coat a particle onto a substrate, and grow single crystals of a particle material.
REFERENCES:
patent: 3250892 (1966-05-01), Inoue
patent: 3340052 (1967-09-01), Inoue
patent: 3598566 (1971-08-01), Inoue
patent: 3670137 (1972-06-01), Inoue
patent: 4005956 (1977-02-01), Inoue
patent: 5084088 (1992-01-01), Okazaki
patent: 5134260 (1992-07-01), Piehler et al.
patent: 5427660 (1995-06-01), Kamimura et al.
patent: 5529746 (1996-06-01), Knoss et al.
patent: 5678166 (1997-10-01), Piehler et al.
patent: 5694640 (1997-12-01), Greetham
patent: 5704555 (1998-01-01), Arastoopour
patent: 5743471 (1998-04-01), Ivanov et al.
patent: 5794113 (1998-08-01), Munir et al.
F.V. Lenel, "Resistance Sintering Under Pressure" Journal of Metals, vol. 7, No. 1, pp. 158-167 (1955).
M.J. Tracy et al, "Consolidation Of Nanocrystalline Nb-A1 Powders By Plasma Activated Sintering" NanoStructured Materials, vol. 2, pp. 441-449 (1993).
Sethuram Krupashankara M.
Sudarshan Tirumalai S.
Yoo Sang H.
Jenkins Daniel J.
Materials Modification Inc.
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