Superconducting coatings in the system Bi-Ca-Sr-Cu-O prepared by plasma spraying

Asthana, A.; Han, P. D.; Falter, L. M.; Payne, D. A.; Hilton, G. C.; Van Harlingen, D. J.
August 1988
Applied Physics Letters;8/29/1988, Vol. 53 Issue 9, p799
Academic Journal
Superconducting coatings in the system Bi-Ca-Sr-Cu-O were deposited on alumina substrates by plasma spray methods. The coatings were superconducting in the ‘‘as-sprayed’’ condition and improved with heat treatment. The best results were for coatings with resistivity values near 10 mΩ cm at room temperature and zero resistance at 96 K. The coatings had a magnetic transition near 80 K, with a weak diamagnetic signal up to 112 K. Superconductivity in the coatings was associated with two distinct phases, one of which was not identified. Scanning electron microscopy, x-ray diffraction, electrical resistivity, and magnetic measurements were used to characterize the coatings.


Related Articles

  • Optimization of Deposition Parameters or α-Al2O3 Coatings by Double Glow Plasma Technique. Lin, Y. -B.; Shen, Y. -Z.; Chen, T. -F.; Jie Tao // Kemija u Industriji;2015, Vol. 64 Issue 9/10, p457 

    The parameters to prepare α-Al2O3 coatings by double glow plasma technique were optimized to obtain dense and thick α-Al2O3 coatings on 316 L stainless steel at low temperature of 580 °C. The parallel distance between the source electrode and the substrate, working pressure, source...

  • Low-resistivity, YBa2Cu3O7-to-silver electrical contacts by plasma spraying. Katz, J. D.; Willis, J. O.; Maley, M. P.; Castro, R. G. // Journal of Applied Physics;2/15/1989, Vol. 65 Issue 4, p1792 

    Presents a study which developed a simple cost-effective method for the fabrication of low-resistivity contacts for high-temperature superconducting ceramics. Measurement of surface resistivities; Electrical properties of the contacts fabricated in the study; Description of plasma spraying...

  • High Tc superconducting films of Y-Ba-Cu oxide prepared by low-pressure plasma spraying. Tachikawa, K.; Watanabe, I.; Kosuge, S.; Kabasawa, M.; Suzuki, T.; Matsuda, Y.; Shinbo, Y. // Applied Physics Letters;3/21/1988, Vol. 52 Issue 12, p1011 

    A low-pressure plasma spraying technique for depositing high Tc Y-Ba-Cu-O thick films has been developed. Films with a thickness range of 20–100 μm have been prepared by using Y0.3Ba0.7CuOx powders. After post-annealing in oxygen for 1 h at 950 °C, the films, which were deposited on...

  • Feasibility study of producing alumina foam by plasma spraying. Devasenapathi, A.; Ng, H.W.; Tan, G.H. // Proceedings of the Institution of Mechanical Engineers -- Part L;2004, Vol. 218 Issue 3, p231 

    Plasma spraying was utilized as a tool to produce alumina (Al2O3) foam based on a new methodology. Blended powder of Al2O3 and calcium oxide (CaO) of different composition was plasma sprayed on predesigned moulds. The sprayed specimens were subsequently treated in water and glycerol in an...

  • Dielectric properties of plasma-spray-deposited BaTiO[sub3] and Ba[sub0.68]Sr[sub0.32]TiO[sub3] thick films. Ahn, K.; Wessels, B. W.; Sampath, S. // Journal of Materials Research;May2003, Vol. 18 Issue 5, p1227 

    Presents information on a study that investigated the dielectric properties of high-constant dielectric BaTiO[sub3] and Ba[sub0.68]Sr[0.32]TiO[sub3] thick films deposited on alumina substrates using a plasma-spray process. Methodology of the study; Results and discussion of the study.

  • Comparative Study of the Electrical Properties and Characteristics of Thermally Sprayed Alumina and Spinel Coatings. Toma, Filofteia-Laura; Scheitz, Stefan; Berger, Lutz-Michael; Sauchuk, Viktar; Kusnezoff, Mihails; Thiele, Sven // Journal of Thermal Spray Technology;Jan2011, Vol. 20 Issue 1/2, p195 

    In this study, APS and HVOF processes have been used to prepare alumina (AlO) and magnesium spinel (MgAlO) coatings designed for insulating applications. The electrical characteristics, i.e., dielectric strength and electrical resistance (electrical resistivity) were investigated using different...

  • Flattening and Cooling of Millimeter- and Micrometer-Sized Alumina Drops. Goutier, S.; Vardelle, M.; Labbe, J. C.; Fauchais, P. // Journal of Thermal Spray Technology;Jan2011, Vol. 20 Issue 1/2, p59 

    n experimental setup was developed to produce fully melted, millimeter-sized, ceramic or metallic drops with impact velocities up to 10 m/s. Such impact velocities allow achievement of impact Weber numbers, close to those of the plasma spray process ( We = 2300) with droplets in the tens of...

  • Microstructural Characterizations of Plasma-Sprayed ZrO[sub 2]/Al[sub 2]O[sub 3] Thermal Barrier Coatings as Related to Oxidation Behavior. Limarga, A. M.; Widjaja, S.; Yip, T. H.; Teh, L. K. // International Journal of Modern Physics B: Condensed Matter Phys;1/20/2002, Vol. 16 Issue 1/2, p233 

    Thermally grown oxide scales can provide high-temperature oxidation protection if they are slow growing, sound and adherent to the substrate. In thermal barrier coatings (TBCs), failure occurs near or at the interface between the metallic bond coat and its thermally grown alumina layer. Oxide...

  • Effect of torch power on the microstructure of plasma sprayed Al2O3 coatings. Marcinauskas, Liutauras; Milieška, Mindaugas; Kėželis, Romualdas // Surface & Interface Analysis: SIA;Jul2016, Vol. 48 Issue 7, p552 

    Al2O3 coatings were formed on stainless steel substrates by atmospheric plasma spraying using air and hydrogen gasses. The increase of the power increases the mean plasma flow temperature and velocity from 4540 to 5150 K and 1460 to 1590 m/s, respectively. The effect of torch power on the...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics