Highly biaxially textured Ni tapes have been strengthened by introducing Al2O3particles with internal oxidation. The tape strength could be increased by a factor of five compared to pure Ni tapes. Therefrom an engineering current density increase by a factor of 4 can be derived by reducing the substrate thickness. Al-oxide formation at the surface of the tapes is prevented by the design of a composite tape consisting of an Al free surface region and an Al containing core with about the same strength. In this composite Al2O3only evolves in the tape core. © 2002 Elsevier Science B.V. All rights reserved.
De Boer, B., Sarma, V., Reger, N., Eickemeyer, J., & Holzapfel, B. (2002). Strengthening of biaxially textured Ni-alloys as substrates for YBCO tape conductors. Physica C: Superconductivity and Its Applications, 372–376(PART 2), 798–801. https://doi.org/10.1016/S0921-4534(02)00910-3