Superconductivity - Part 23: Residual resistance ratio measurement - Residual resistance ratio of Nb superconductors
NORM herausgegeben am 1.3.2019
Designation standards: ČSN EN IEC 61788-23
Classification mark: 345685
Catalog number: 506363
Publication date standards: 1.3.2019
The number of pages: 40
Approximate weight : 120 g (0.26 lbs)
Country: Czech technical standard
Kategorie: Technische Normen ČSN
This part of IEC 61788 addresses a test method for the determination of the residual resistance ratio (RRR), , of cavity-grade niobium. This method is intended for high-purity niobium grades with 15 < < 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