Lev J Tuchinskiy

58647430, Jan 26, 1999

Nov 6, 1996

8/744359

Lev J. Tuchinskiy - Tucson AZ
Robert A. Mallia - Tucson AZ

Materials and Electrochemical Research (MER) Corporation - Tucson AZ

B22F 702

419 2

A method for making multi-channel structures suitable for use as filters, catalyst carriers or the like. A composite rod comprising an outer shell and an inner core is formed of respective mixtures of powders. The mixture for the outer shell comprises a sinterable powdered structural material such as ceramics, metals, intermetallics, and a powdered binder. The inner core comprises a powdered carbon channel-forming filler material such as graphite or amorphous carbon, and a powdered binder. The composite rod may be deformed, as by extrusion, to reduce its diameter. A bundle of composite rods is assembled and deformed, as by extrusion, to reduce the diameter of the bundle and of its component composite rods. Further bundles of the reduced diameter bundles of composite rods may be likewise deformed by extrusion to reduce further the diameter of the component composite rods of the successive bundles, thereby also increasing the number of such rods per given cross section area of the bundle. The final assembly of bundles is consolidated and the binder is removed, as by heating, followed by removal of the carbon inner cores of the composite rods of the assembly of bundles by oxidation and sintering of the remaining structure of ceramic or metal, as the case may be.

20150137404, May 21, 2015

May 16, 2014

14/279707

Lev Tuchinskiy - Houston TX, US

B32B 27/08
C04B 35/447
B32B 27/30
C04B 35/64
B32B 15/04
B32B 27/06

264 461, 428471, 428457, 428520, 4283105, 264 458, 264639, 264642, 26417311

The invention relates to a novel process for commercial production of bulk functionally graded materials (FGM) with a per-determined axial, radial, and spherical gradient profiles. The process is based on the reiterated deformation of the layers of variable cross-section thicknesses made of different materials. That allows significant savings of time, energy and materials. Metals, ceramics, glasses and polymers in different combinations can be brought together with a continuous or stepwise gradual change from one material to another. The invention can be applied to industrial production of functionally graded materials with different types of gradient profiles, which cannot be produced by the existing technologies and which are sought by many key industries. The mechanical, thermal and optical responses of materials produced by the proposed methods are of considerable interest in optics, optoelectronics, tribology, biomechanics, nanotechnology and high temperature technology.