Superconductor technology: apparatus – material – process – High temperature – per se – Having tc greater than or equal to 150 k
Patent
1990-06-14
1992-02-18
Beck, Shrive
Superconductor technology: apparatus, material, process
High temperature , per se
Having tc greater than or equal to 150 k
505741, 427 62, 427 63, 427282, B05D 512, B05D 302
Patent
active
050894650
ABSTRACT:
A process for producing a superconducting thick film including steps comprising subjecting a powder mixture of oxides or carbonates of Ba, Y and Cu each having an average particle size of less than 5 .mu.m to preliminary sintering, pulverizing the preliminary sintered mass into a powder having an average particle size of less than 10 .mu.m, and then admixing the pulverized powder with an organic vehicle to prepare a paste which is applied on a substrate and is sintered finally. The preliminary sintering is carried out at a temperature ranging from 700.degree. to 950.degree. C., while the final sintering is carried out at a temperature ranging from 800.degree. C. to 1,000.degree. C.
REFERENCES:
patent: 4316785 (1982-02-01), Suzuki et al.
patent: 4392180 (1983-07-01), Nair
patent: 4632846 (1986-12-01), Fujinaka et al.
patent: 4695504 (1987-09-01), Watanabe et al.
patent: 4766010 (1988-08-01), Takeuchi et al.
Koinuma et al. "Preparation of (La.sub.1-x Sr.sub.x)Cu O.sub.4-8 Superconducting Films by Screen Printing Method" Jpn. J. Appl. Phys. vol. 26, No. 4 (1987) L399-L401.
Cava et al. "Bulk Superconductivity at 36k in La.sub.1.8 Sr.sub.0.2 CuO.sub.4 " Phys. Rev. Lett. vol. 58(4) Jan. 1987, pp. 408-410.
Koinuma "High Tc Superconductivity in Screen Printed Yb-Ba-Cu-O Films" Jpn. J. Appl. Phys. 26(5) May 1987 L761-762 (II).
Wu et al., "Superconductivity at 93k in New Mixed-phase Y-Ba-Cu-O Compound System at Ambient Pressure", Physical Review letters B vol. 58 No. 9(1987) pp. 908-910.
Matsumoto et al., "Preparation and Photovoltaic Properties of Screen Printed CaSlCu.sub.x S Solar Cells" Jpn. J. Appl. Phys. vol. 19, No. 1 (1980) L129-134.
Bednorz et al., "Possible High T.sub.c Superconductivity in the Ba-La-Cu-O System", Z. Phys. B--Condensed Matter 64 (1986) pp. 189-193.
Jodai Tetsuji
Sasaki Nobuyuki
Sibata Kenichiro
Yazu Shuji
Beck Shrive
King Roy V.
Sumitomo Electric Industries Ltd.
LandOfFree
Process for producing oxide superconducting thick films by scree 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 for producing oxide superconducting thick films by scree, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for producing oxide superconducting thick films by scree will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1823551