A modified method to measure delamination strength of stabilizer free REBCO coated conductor under transverse tension

• Published in: Physica. C, Superconductivity Vol. 583; p. 1353850
• Main Authors: Dai, Kaihang, Guo, Chunjiang, Zhu, Jiamin, Jin, Zhijian, Hong, Zhiyong, Zhao, Yue, Zhang, Zhiwei
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 15.04.2021; Elsevier BV
• Subjects: Adhesive strength; Conductors; Copper; Delamination; Delamination strength; Fracture surfaces; High temperature superconductors; Ion beam assisted deposition; Mechanical properties; Polymer matrix composites; REBCO coated conductor; Stabilizers (agents); Stainless steel; Stainless steels; Studies; Tensile strength; REBCO coated conductor; Mechanical properties; Delamination strength
• ISSN: 0921-4534; 1873-2143
• DOI: 10.1016/j.physc.2021.1353850

•A modified transverse tensile testing method by using epoxy adhesive was developed.•Decreasing operation temperature can improve the delamination strength of CCs.•At 77 K, the critical stress is almost double compared to the result at RT. A setup of transverse tension measurements of high temperature superconductor (HTS) RE-Ba-Cu-O coated conductors are modified for simplicity. Modification includes using high strength epoxy films instead of solder as adhesive agents and changing the shape of contact surface between test samples and anvils. This method was designed to measure delamination strength of stabilizer free REBCO coated conductors with a width more than 10 mm. It is also applicable to REBCO coated conductors with copper or stainless-steel stabilizers. Samples made by the IBAD/PLD process were tested by this test. Effect of operation temperature on the delamination strength of coated conductors was investigated. In addition, fracture surfaces of delaminated samples were studied.