Process for the production of multilayered bulk materials

Details Process for the production of multilayered bulk materials Process for the production of multilayered bulk materials

1998-11-24

2000-08-15

Jenkins, Daniel J.

Powder metallurgy processes

Powder metallurgy processes with heating or sintering

Powder shape or size characteristics

419 38, B22F 312

Patent

active

061031879

ABSTRACT:
The present invention relates to a process of the production of multilayered bulk materials. A plurality of constituting powders of a desired multilayered material are mixed at a predetermined ratio, particle of the powders being smaller than 100 .mu.m in size. The powder mixture is mechanically alloyed for a predetermined period of time by using a high-energy ball mill in an argon-filled glove box. The mechanically alloyed powder is loaded in a mold and is then hot-pressed under a uniaxial compressive pressure at a predetermined temperature, resulting in a composition having multilayered structure. The process according to the present invention provides an effective way of overcoming thickness limitations of conventional multilayered materials and enabling low-cost mass production of multilayered materials.

REFERENCES:
patent: 4761263 (1988-08-01), Politis et al.
patent: 5578553 (1996-11-01), Koriyama et al.
patent: 5997273 (1999-12-01), Laquer

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