Investigation on the phase transformation of Bi-2223/Ag superconducting tapes during heating

被引：1

作者：

Huang, K. -T. ^{[1
]}

Qu, T. -M. ^{[2
]}

Xie, P. ^{[1
]}

Han, Z. ^{[1
]}

机构：

[1] Tsinghua Univ, Dept Phys, Appl Superconduct Res Ctr, Beijing 100084, Peoples R China

[2] Tsinghua Univ, Dept Mech Engn, Key Lab Adv Mat Proc Technol, Minist Educ, Beijing 100084, Peoples R China

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2013年 / 490卷

关键词：

Bi-2223/Ag tape; In situ resistance; Oxygen diffusion; Liquid phase; AG-SHEATHED TAPES; CU-O SYSTEM; HIGH-TEMPERATURE; SINGLE-CRYSTALS; IN-SITU; ELECTRONIC CONDUCTION; BI; PB(2223); TAPES; OXYGEN DIFFUSION; RESISTIVITY; BI2SR2CACU2O8+DELTA;

D O I：

10.1016/j.physc.2013.04.071

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The phase transformation of Bi-2223/Ag superconducting tapes during heating was investigated. The resistance of the ceramic core as a function of the heating temperature was measured in situ. The pO(2) of the outlet gas in the heating process was also monitored continuously. By comparing the heating process with the X-ray diffraction and T-c measurements taken from samples quenched at different temperatures, we have identified that the heating process could be divided into the following regions: (1) the oxygen diffusion (OD) region, which is mainly influenced by OD; (2) the Pb-rich phase evolution (PbE) region, in which the formation and decomposition of the Pb-rich phases occur; (3) the liquid phase formation (LF) region, in which resistance increased rapidly with increasing temperature. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：43 / 48

页数：6

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