Effect of carbon on the structure and superconducting properties of Nb 3 Sn coatings produced by electrocodeposition 1
Article
Received:
Revised:
- 18 Downloads
- 3 Citations
Abstract
The effect of carbon doping on the structure and superconducting properties of Nb3 Sn coatings produced by electrocodeposition of Nb and Sn from molten salts was investigated. The results demonstrate that the addition of fine-particle graphite powder to the melt has an insignificant effect on the microstructure, critical current, and superconducting transition temperature Tc of the coatings but reduces the superconducting transition width (ΔTc≤0.05). Doping of Nb3Sn with carbon from the gas phase (Ar + CCl4) ensures the formation of a fine-grained microstructure and increases the critical current of the material by a factor of 3–3.5 compared to coatings grown in pure argon atmosphere.
Keywords
Microstructure Graphite Argon CCl4 Argon Atmosphere
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
Preview
Unable to display preview. Download preview PDF.
REFERENCES
- 1.Glebov, I.A. 1999Problemy elektromashinostroeniya, elektroenergii, elektrofiziki i ikh reshenieNaukaSt. Petersburg(Critical Issues and Future Directions in the Manufacture of Electrical Machinery, Electric Power Engineering, and Electro-physics)Google Scholar
- 2.Thome, R.J. 1994Magnet Design for International Thermonuclear Experimental ReactorFusion Technol.26465472Google Scholar
- 3.Kolosov, V.N., Superconducting Helicoid on a Basis of Electrolytical Niobium Stannide Coatings as an Alternative to Ordinary Superconducting Windings, VII Russian-Chinese Symp. on New Materials and Technologies, Agoy, 2003, p. 76.Google Scholar
- 4.Foner, S.Schwartz, D.D. eds. 1981Superconductor Materials Science: Metallurgy, Fabrication, and ApplicationPlenumNew YorkTranslated under the title Metallovedenie i tekhnologiya sverkhprovodyashchikh materialov, Moscow: Metallurgiya, 1987Google Scholar
- 5.Ekin, J.W. 1984Strain Effect in Superconducting CompoundsAdv. Cryog. Eng.30823826Google Scholar
- 6.Kolosov, V.N., Gel’, R.P., Drobotenko, G.A. 1993Super-conducting Properties of Nb-Ta-Sn Coatings Produced by ElectrocodepositionFiz. Met. Metalloved.756973Google Scholar
- 7.Kolosov, V.N., Drobotenko, G.A., Gel’, R.P. 1994Effect of Nitrogen on the Structure and Superconducting Properties of Niobium Stannide Produced by ElectrocodepositionFiz. Met. Metalloved.786268Google Scholar
- 8.Ziegler, G., Blos, B., Diepors, H., Wohlleben, K. 1971Einflβ von Kohlenstoff auf die Stromtragfahigkeit von Nb3SnZ. Angew. Phys.31184189Google Scholar
- 9.Ziegler, G. 1973Superconducting Properties of Nb3Sn with High Carbon DopingZ. Naturforsch., A: Phys. Sci.28318319Google Scholar
- 10.Enstrom, R.E., Hanak, J.J., Appert, J.R., Strater, K. 1972Effect of Impurity Gas Addition on the Superconducting Critical Current of Vapor-Deposited Nb3SnJ. Electro-chem. Soc.119743747Google Scholar
- 11.Enstrom, R.E., Appert, J.R. 1972Preparation, Microstructure, and High-Field Superconducting Properties of Nb3Sn Doped with Group-III,-IV,-V,-VI ElementsJ. Appl. Phys.4319151923Google Scholar
- 12.Baraboshkin, A.N. 1976Elektrokristallizatsiya metallov iz rasplavlennykh soleiNaukaMoscow(Electrocrystallization of Metals from Molten Salts)Google Scholar
- 13.Gamburg, Yu.D. 1997Elektrokhimicheskaya kristallizatsiya metallov i splavovYanus-KMoscow(Electrocrystallization of Metals and Alloys)Google Scholar
- 14.Saltykova, N.A., Esina, N.O., and Zyryanov, V.G., Effect of Metal and Oxide Particles Suspended in the Melt on the Structure of Molybdenum Electrodeposits, IV Ural’skaya konferentsiya po vysokotemperaturnoi fizicheskoi khimii i elektrokhimii (IV Ural Conf. on High-Temperature Physical Chemistry and Electrochemistry), Sverdlovsk, 1985, part 1, pp. 191–192.Google Scholar
- 15.Baraboshkin, A.N., Saltykova, N.A., Talanova, M.I., Martem’yanova, Z.S. 1970Controlled Passivation during Electrodeposition of Metals from Molten Salts: I. Effect of Vapor Composition on the Structure of Molybdenum DepositsElektrokhimiya615521555Google Scholar
- 16.Baraboshkin, A.N., Saltykova, N.A., Molchanov, A.M., et al. 1972Controlled Passivation during Electrodeposition of Metals from Molten Salts: I. Effect of Electrolysis Conditions and Vapor Composition on the Structure of Molybdenum Deposits Produced in a Carbon Dioxide AtmosphereElektrokhimiya8883886Google Scholar
- 17.Kushkhov, K., Novoselova, I.A., Shapoval, V.I., Tishchenko, A.A. 1992Electroreduction of Polytungstate Melts at an Excess Carbon Dioxide PressureElektrokhimiya28779784Google Scholar
- 18.Bashkirov, Yu.A., Vinogradov, V.M., Darinskaya, E.V., et al. 1974On the Nature of Pinning Sites in Polycrystalline Niobium Stannide FilmsFiz. Met. Metalloved.37517524Google Scholar
- 19.Philipsborn, H. 1964schsysteme von Verbindundendes Cr 3 Si—Typs und Deren Polimorphia-ErscheinnungenJurisZürichGoogle Scholar
- 20.Kolosov, V.N., Effect of Processing Conditions on the Surface Purity and Interstitial Impurity Distribution in the Surface Layer of Molybdenum, Fiz. Khim. Obrab. Mater., 2004, no. 1, pp. 51–57.Google Scholar
- 21.Kolosov, V.N. 1998Evaluation of High Frequency Superconductivity of Nb 3 Sn Coatings Obtained by Joint Electro-chemical DepositionRefractory Metals in Molten SaltsKluwerDordrecht239244Google Scholar
- 22.Kolosov, V.N., Novichkov, V.Yu. 2003Zero-Current Deposition of Superconducting Nb 3 Sn Coatings from Molten SaltsNeorg. Mater.39583590[Inorg. Mater. (Engl. Transl.), vol. 39, no. 5, pp. 485–491]Google Scholar
- 23.Kolosov, V.N., Shevyrev, A.A. 2004Effect of Heat Treatment on the Structure and Properties of Superconducting Nb and Nb3Sn ElectrodepositsNeorg. Mater.40286291[Inorg. Mater. (Engl. Transl.), vol. 40, no. 3, pp. 235–240]Google Scholar
- 24.Konstantinov, V.I. 1977Elektroliticheskoe poluchenie tantala, niobiya i ikh splavovMetallurgiyaMoscow(Electrodeposition of Tanta-lum, Niobium, and Their Alloys)Google Scholar
- 25.Kolosov, V.N., Gel’, R.P., Drobotenko, G.A., Shevyrev, A.A. 1994On the Possibility of Stabilizing the A-15 Structure of Electrolytic Nb by SnFiz. Met. Metalloved.777982Google Scholar
- 26.Kolosov, V.N., Shevyrev, A.A. 2003Properties of Niobium Carbide Layers Produced by Niobium Electrodeposition on Graphite from Molten SaltsPererabotka prirodnogo i tekhnogennogo syr’ya, soderzhashchego redkie, blagorodnye i tsvetnye metallyKol’skii Nauchnyi Tsentr, Ross. Akad. NaukApatity120122(Processing of Natural and Man-Made Raw Materials Containing Rare, Noble, and Nonferrous Metals)Google Scholar
- 27.Campbell, A.M., Evetts, J.E. 1972Critical Currents in SuperconductorsTaylor and FrancisLondonGoogle Scholar
Copyright information
© MAIK “Nauka/Interperiodica” 2004