Abstract
The processing of In 2O 3–ZrO 2 and SnO 2–ZrO 2 coatings were evaluated on Nb 3Sn wires. Coatings were produced by using reel-to-reel, continuous sol–gel system from solutions of Zr, In, and Sn based organometallic compounds. Microstructure, phase composition and formation of the coatings were characterized by means of ESEM, SEM, EDS, XRD and DTA studies. Sol–gel zirconia based ceramic coatings, varying from submicron to several of microns in thickness, have been successfully applied to Nb 3Sn wires at the National High Magnetic Field Laboratory. Insulated and uninsulated Nb 3Sn conductors, that were heat treated together, showed about the same J c.
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