Evaluation of adhesion strength of sol-gel ceramic insulation for hts magnets


ÇELİK E., Schwatz J., Avci E., Hascicek Y.

IEEE Transactions on Applied Superconductivity, vol.9, no.2 PART 2, pp.1916-1919, 1999 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 9 Issue: 2 PART 2
  • Publication Date: 1999
  • Doi Number: 10.1109/77.784834
  • Journal Name: IEEE Transactions on Applied Superconductivity
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1916-1919
  • Ankara Yıldırım Beyazıt University Affiliated: No

Abstract

Adhesion strength of high temperature insulation materials deposited on silver was investigated. CeCh and ZrOz based coatings on Ag substrates were prepared by the sol-gel technique. Experiments for determining the adhesion strength between insulations and silver were performed using a mini tensile testing machine. The microstructures of coatings and their interfaces were determined by means of SEM, EDS, and X-ray diffraction. The results indicated that the failure was in the form of a mixed type as interfacial/cohesive defect. The average adhesive strength of ZrOz, CeCh, ZrO2+20wt%MgO, ZrO2+8wt%Y2O3, ZrOz+ 8wt%CeO2, ZrO2+15wt%In2O3 and ZrO2+15wt%SnO2 were found to be 0.763, 0.913,1.045,1.150, 0.915 0.833 and 0.797 MPa, respectively. Y2O3, MgO, and CeCh doped ZrOz showed the best adhesive properties. © 1999 IEEE.