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sklademVydáno: 2021-11-01
UNE EN IEC 61788-23:2021
Superconductivity - Part 23: Residual resistance ratio measurement - Residual resistance ratio of cavity-grade Nb superconductors (Endorsed by Asociación Española de Normalización in November of 2021.)
Superconductividad. Parte 23: Medida de la relación de resistencia residual. Relación de resistencia residual de los superconductores de Nb (Ratificada por la Asociación Española de Normalización en noviembre de 2021.)
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| Označení normy: | UNE EN IEC 61788-23:2021 |
| Počet stran: | 38 |
| Vydáno: | 2021-11-01 |
| Status: | Norma |
DESCRIPTION
UNE EN IEC 61788-23:2021
This part of IEC 61788 addresses a test method for the determination of the residual resistance ratio (RRR), RRRr, of cavity-grade niobium. This method is intended for high-purity niobium grades with 150 < RRRr< 600. The test method should be valid for specimens with rectangular or round cross-section, cross-sectional area greater than 1 mm2 but less than 20 mm2, and a length not less than 10 nor more than 25 times the width or diameter.
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