Oblast zaměření: Supravodivost
Komise : IEC/TC 90 (Superconductivity)
K připomínkám do: 28.05.2019
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This part of IEC 61788 specifies a test method for the determination of the residual resistance ratio (RRR) of Nb-Ti and Nb3Sn composite superconductors with Cu, Cu-Ni, Cu/Cu-Ni and Al matrix. This method is intended for use with superconductor specimens that have a monolithic structure with rectangular or round cross-section, RRR value less than 350, and cross-sectional area less than 4 mm2. In the case of Nb3Sn, the specimens have received a reaction heat-treatment.