GB/T 42472-2023 Active National standards

GB/T 42472-2023 Critical current measurement—Retained critical current after double bending at room temperature of Ag-sheathed Bi-2223 superconducting wires

Publish Date: 2023-03-17 Implement Date: 2023-10-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 42472-2023

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: \nTest methods for the physical properties of metals

ICS Name: Conductor materials

Publish Date: 2023-03-17

Implement Date: 2023-10-01

Pages: 21 pages

Scope

This document describes the test method for the critical current of short and straight Bi-2223 oxide superconductors at room temperature after double bending. The samples are single-core or multi-core silver and/or silver-clad superconducting wires with a flat or square structure. The superconducting wires can be encapsulated with copper alloy, stainless steel, or nickel alloy strips.
This document is applicable to superconductors with a critical current of less than 300 A and an n-value greater than 5. The test for the critical current after double bending at room temperature is conducted without an external magnetic field, and the samples are immersed in open liquid nitrogen.