Reaction of YBa2Cu3O7-δ Powder with NOx Gas in an Aerosol Reactor |
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| Authors: | David C. Hitchcock Richard P. Rusin D. Lynn Johnson |
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| Affiliation: | Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208–3108 |
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| Abstract: | Thermodynamic calculations predict, and experiments verify, that YBa2Cu3O7-8 (123) powder is unstable in the presence of NOx-containing aerosol reactor exhaust gases at temperatures below about 600°C. Powders collected above the stability temperature are single-phase 123, while powders collected at lower temperature contain Ba(NO3)2 formed by reaction of the powder with NOx, after exit from the hot zone. |
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| Keywords: | superconductors aerosol thermodynamics reactors nitrogen oxides |
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