超清版 GB/T 44371-2024 临界弯曲直径测量液氮温区Bi-2223 超导带材的临界弯曲直径测量

ICS 29.050；77.040.01
CCS H 62；H 21
中华人民共和国国家标准
GB/T 44371—2024
临界弯曲直径测量
液氮温区Bi-2223 超导带材的
临界弯曲直径测量
Critical bending diameter measurement—
Critical bending diameter measurement of Bi-2223
superconducting wires in liquid nitrogen temperature
2024-08-23 发布2025-03-01 实施
国家市场监督管理总局
国家标准化管理委员会发 布

目　　次
前言 ····································································································· Ⅲ
引言 ····································································································· Ⅳ
1 范围 ·································································································· 1
2 规范性引用文件 ······················································································ 1
3 术语和定义 ··························································································· 1
4 原理 ·································································································· 2
5 测量装置 ······························································································ 2
5.1 概述 ······························································································ 2
5.2 测量组件 ························································································· 2
5.3 U﹘I 特性测量系统 ·············································································· 3
6 样品准备和安装 ······················································································ 3
6.1 样品尺寸要求 ···················································································· 3
6.2 样品的安装 ······················································································ 4
7 测量步骤 ······························································································ 4
7.1 初始临界电流测量 ··············································································· 4
7.2 弯曲状态下临界电流测量 ········································································ 4
7.3 临界弯曲直径测定 ··············································································· 5
7.4 多次冷热循环的影响（可选） ··································································· 5
8 结果计算 ······························································································ 5
8.1 临界电流计算 ···················································································· 5
8.2 n﹘值计算（可选） ··············································································· 6
8.3 临界弯曲直径计算 ··············································································· 6
8.4 测量不确定度 ···················································································· 6
9 测量报告 ······························································································ 7
9.1 被测样品详情 ···················································································· 7