Process of making a superconducting glass-ceramic composition

Details Process of making a superconducting glass-ceramic composition Process of making a superconducting glass-ceramic composition

1988-09-27

1990-11-13

Roy, Upendra

Superconductor technology: apparatus, material, process

High temperature , per se

Having tc greater than or equal to 150 k

252519, 252521, 420901, 423593, 505704, 505739, H01L 2352, H01L 3924

Patent

active

049701959

ABSTRACT:
A process for preparing a glass-ceramic material with superconducting properties is disclosed.
In the first step of this process, a powder batch comprised of a glass-former and of barium oxide, yttrium oxide, and copper oxide (or the precursors of one or more of these oxides) is provided. These oxides (or their precursors) are present in varying amounts for the Ba.sub.2 YCu.sub.3 O.sub.x composition.
In the second step of the process, the powder batch is melted at a temperature of from about 1170 to 1300 degrees Celsius while under an oxygen-containing atmosphere.
In the third step of the process, the molten batch is rapidly cooled, thereby forming glass.
In the fourth step of the process, the glass is heat-treated at a temperature of from about 750 to about 950 degrees Celsius.

REFERENCES:
patent: 4536328 (1985-08-01), Hankey
Masuda et al., Jap. Jour. Appl. Phys. 27 (Aug. 1988) L-417.
Bhargava et al. in High Tc Superconductors II, ed. Capone II et al., Apr. 1988, MRS Symposium, p. 59.
Nasu et al, J. Non-Cryst. Solids (Oct. 1988) vol. 105, p. 185 "Abstract".
Zhens et al, Phys. Rev. 38B (Oct. 1, 1988) p. 7166.

Affiliated with

Also associated with

Rating

Process of making a superconducting glass-ceramic composition does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process of making a superconducting glass-ceramic composition, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process of making a superconducting glass-ceramic composition will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-776913