Back to Search
Start Over
Delamination behavior of Gd123 coated conductor fabricated by PLD
- Source :
- Physica C: Superconductivity and its Applications. 471:1075-1079
- Publication Year :
- 2011
- Publisher :
- Elsevier BV, 2011.
-
Abstract
- We have studied delamination behavior of GdBa2Cu3O7-d (Gd123) coated conductors fabricated by pulsed laser deposition. Two kinds of delamination tests, transverse tensile test and four points bending test, were performed. The delamination strength of 8 and 4–7 MPa was obtained by transverse tensile test, and interfacial cohesive energy of 7.1 and 5.9 J/m2 was obtained by four points bending test for samples fabricated with different processing rates, 20 m/h and 60 m/h, respectively. EPMA and XPS analyses of delaminated surfaces showed that the weakest position in Gd123 coated conductor was inside of Gd123 layer a few nm apart from Gd123/CeO2 interface. The samples exhibiting a lower interfacial energy had a large gradient in oxygen distribution at the interface. The reason why the delamination occurred there is due to strain concentration induced from both lattice mismatch and inhomogeneous oxygen distribution at the interface.
- Subjects :
- Materials science
Delamination
Energy Engineering and Power Technology
Bending
Condensed Matter Physics
Surface energy
Electronic, Optical and Magnetic Materials
Pulsed laser deposition
X-ray photoelectron spectroscopy
Electrical and Electronic Engineering
Composite material
Layer (electronics)
Electrical conductor
Tensile testing
Subjects
Details
- ISSN :
- 09214534
- Volume :
- 471
- Database :
- OpenAIRE
- Journal :
- Physica C: Superconductivity and its Applications
- Accession number :
- edsair.doi...........41f45c2d796ce6ffbb95ac8b1493e9a2