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CORROSION BEHAVIOR OF HIGH-TEMPERATURE SUPERCONDUCTOR YBa2Cu3-YAgyO7-x IN THE PRESENCE OF WATER
Korean Journal of Chemical Engineering, November 1995, 12(5),
10.1007/BF02705860
10.1007/BF02705860
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Abstract
Because of the presence of water vapor, YBa2Cu3-YAgyO7-x degrades easily in the atmosphere and thus very difficult to put it to practical use. When Cu is partially substituted with Ag, however, there is not much a decrease in the critical temperature (Tc):Tc is 89 K compared with 91 K without substitution. Moreover, partial substitution of Ag increases density, hardness, and superconducting particle size and above all improves considerably its stability in water. In this study YBa2Cu3-YAgyO7-x and YBa2Cu3-YAgyO7-x as a result of a partial substitution of Ag for Cu were synthesized by pyrophoric method. We investigated their stabilities in water by XRD, SEM, and EPMA after immersing samples in distilled water for 3 hours. We can see that YBa2Cu3-YAgyO7-x was the largest particle size and anticorrosion behavior.
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References
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Yang YM, Out P, Jhao BR, Jhao YY, Li L, Ran QZ, Jin RY, J. Appl. Phys., 66(1), 312 (1989)
