Skip to main content Accessibility help
×
Home

Study of Contact Angles of Metals and Alloys on the Superconducting YBa2Cu3O7-x

  • Siu-Wai Chan (a1), W. G. Bader (a1), N. S. Yeung (a1) and G. W. Hull (a1)

Abstract

Wettability and contactibility of selected metals and alloys on superconducting YBa2Cu3O7-x were studied. Droplets of metals and alloys were formed by melting short segments of wires on pellets of YBa2Cu3O7-x The wires were melted in a rapid thermal annealer with an oxygen atmosphere to lessen the oxygen loss from the YBa2Cu3O7-x surface. The contact angles of the solidified droplets on the pellets were measured from the micrographs taken with a scanning electron microscope. Contact angles less than 90° were obtained with Pb and Ag, while angles greater than 90° were obtained with Bi metal, 40Pb/60Sn, and 99Pb/lSb alloys. Pb alloyed with either Sn or Sb increased the wetting angles. The contact angles provided a direct measurement of wetting characteristics and were used to relate various surface energies and the work of adhesion between tested metallic systems and YBa2Cu3O7-x.

Copyright

References

Hide All
1. Bednorz, J. G. and Muller, K. A., Z. Phys. B 64, 189 (1986).
2. Wu, M. K., Ashburn, J. R., Torng, C. T., Hor, P. H., Meng, R. L., Gao, L., Huang, Z. J., Wang, Y. Q. and Chu, C. W., Phys. Rev. Lett. 58, 908 (1987).
3. Young, T., Phil. Trans. R. Soc. 95, 65 (1805)
4. Barboux, P., Tarascon, J. M., Greene, L. H., Hull, G. W., and Bagley, B. G., J. of Appl. Phys. 63 8 (1988).
5. Kaiser, D. L., Holtzberg, F., Chisholm, M. F., and Worthington, T. K., J. of Crystal Growth, 85 593 (1987).
6. See Murr, L. E., “Interfacial Phenomena in Metals and Alloys,” (Addison-Wesley, Reading, MA.), 1975, p.101.
7. Dupre, A., Theorie Mecanique de la chaleur (Gauthier Villars, Paris), 1869.
8. Cook, R. F., Dinger, T. R., and Clarke, D. R., Appl. Phys. Lett., 51 454 (1987).
9. See Ralls, K. M., Courtney, T. H., Wulff, J., “Materials Science and Engineering,” (Wiley & Sons, New York), 1976, p.305.
10. Humenik, M. Jr. and Kingery, W. D., J. Amer. Ceram. Soc. 37 18 (1954).

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed