Aligned Bismuth, Strontium, Calcium Cuprate Coatings on Polycrystalline Substrates.
Abstract
The present invention relates in general to a process for forming thick film superconducting coatings on a polycrystalline substrate and, more particularly, to a process for forming a thick film of BiaSrbCacCudOx(BSCCO) on a polycrystalline substrate. A process is provided for forming an oriented thick film superconducting coating on a polycrystalline substrate, the coating comprising at least two highly oriented components. The process is a powdered mixture prepared from Bi2O3, SrCO3, CaCO3, and CuO onto a polycrystalline substrate; rapidly heating the resultant coated substrate to a temperature of from about 1000-1100 C for a period of from about 5-30 minutes, thereby melting the powder and forming a thick film coating; rapidly quenching the coated substrate to below 500 C, which is below the temperature at which phase transition occurs. Patent applications. (jes)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 21, 1990
- Accession Number
- ADD014522
Entities
People
- J. R. Spann
- Lajos Tóth
Organizations
- United States Department of the Navy