Method of electrophoretic deposition of laminated green bodies

Details Method of electrophoretic deposition of laminated green bodies Method of electrophoretic deposition of laminated green bodies

1997-04-23

1999-07-06

Mayekal, Kishor

Chemistry: electrical and wave energy

Processes and products

Electrophoresis or electro-osmosis processes and electrolyte...

204490, 204491, C25D 1302

Patent

active

059193476

ABSTRACT:
A method of electrophoretic deposition of a ceramic green body. A ceramic powder is optionally washed with a polar solvent such as deionized water, dried, and suspended in a polar organic solvent in a proportion of at least 20% by weight. A positive surface charge is imposed on the suspended particles by conventional means such as ball milling or ultrasonic treatment. A green body is deposited on a cathode by passing a direct electric current of constant current density through the suspension. The density of the green body generally is at least 70% of theoretical. The density of the fired body generally is at least 98% of theoretical. A layered green body may be deposited by using several suspensions of differing global ceramic composition and depositing each microlayer in a different suspension.

REFERENCES:
patent: 4279725 (1981-07-01), Powers et al.
patent: 5002647 (1991-03-01), Tanabe et al.
patent: 5194129 (1993-03-01), Kerkar et al.
patent: 5700361 (1997-12-01), Shiomitsu et al.
patent: 5795456 (1998-08-01), Friedman et al.
Chartier, et al, "Laminar Ceramic Composites", J. Eur. Cer. Soc., 15 (1995) 101-107. no month available.
Nicholson et al, "Electrophoretic Deposition and its use to Synthesize ZrO.sub.2 /Al.sub.2 O.sub.3 Microlaminate Ceramic/Ceramic Composites", J. of Material Science, 28 (1993) 6274-6278. no month available.
Sakar, P., "Electrophoretic Deposition and Its Use to Synthesize Al.sub.2 O.sub.3/ YSZ Microlaminate Ceramic/Ceramic Composites", Ceram. Eng. Sci.
Sakar et al, "Structural Ceramic Microlaminates by Electrophoretic Deposition", J. Am. Ceramic Soc., vol. 75, No. 10, pp. 2907-2909, (1992). no month available.
Woolf et al, "Fabrication of Long Length Bi-2223 Superconductor Tape Using Continuous Electrphoretic Deposition on Round and Flat Substrates", J. of Electronic Masterials, vol. 24, No. 12, pp. 1797-1801, (1995). no month available.
Ishihara et al, "Preparation of Yttria-Stabilized Zirconia Films for Solid Oxide Fuel Cells by Electrophoretic Deposition Method", Chemistry Letters (Japan), pp. 943-946, (1992). no month available.
Whitehead et al, "Non-Planar Al.sub.2 O.sub.3/ UPSZ Laminates by Electrophoretic Deposition Using Al.sub.2 O.sub.3 Fibre Electrodes", No ref given. (no date available).
Andrews et al, "The Forming of Ceramic Bodies by Electrophoretic Deposition", Proc. Brit. Ceramic Soc., pp. 211-229, (1968). no month available.
Brownie et al, "Electrophoretic Deposition of Ceramic Sol Particles on Ceramic Substrates" Ceram. Eng. Sci. Proc., 14(9-10), pp. 707-716, (1993). no month available.

Affiliated with

Also associated with

Rating

Method of electrophoretic deposition of laminated green bodies does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of electrophoretic deposition of laminated green bodies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of electrophoretic deposition of laminated green bodies will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-896661