BS EN IEC 61788-23:2018
Superconductivity - Residual resistance ratio measurement. Residual resistance ratio of Nb superconductors
Superconductivity - Residual resistance ratio measurement. Residual resistance ratio of Nb superconductors
- Статус документа:
- Отменён
- Формат:
- Электронный (PDF)
- Дата публикации:
- 31 октября 2018 г.
- ICS:
- 17.220
- Технический комитет:
- CENELEC
- SKU:
- BS EN IEC 61788-23:2018
Abstract
1 Scope This part of IEC 61788 addresses a test method for the determination of the residual resistance ratio ( RRR ), r RRR , of cavity-grade niobium. This method is intended for high-purity niobium grades with 15 < r RRR < 600. The test method should be valid for specimens with rectangular or round cross-section, cross-sectional area greater than 1 mm 2 but less than 20 mm 2 , and a length not less than 10 nor more than 25 times the width or diameter.
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