Hostname: page-component-78c5997874-t5tsf Total loading time: 0 Render date: 2024-11-06T02:03:49.102Z Has data issue: false hasContentIssue false
  • English
  • Français

Inhomogeneities In Sol-Gel Coatings

Published online by Cambridge University Press:  28 February 2011

B. D. Fabes. ,
D. L. Klein.  and
L. J. Raymond
B. D. Fabes.
Affiliation:
University of Arizona.Department of Materials Science and Engineering.Tucson. Arizona 85721
D. L. Klein.
Affiliation:
University of Arizona.Department of Materials Science and Engineering.Tucson. Arizona 85721
Get access

Abstract

The structure of sol-gel derived silica coatings was investigated using nanoindentation. chemical etching. and cross-sectional TEM. For coatings heated at 100°C. the surfaces were harder, etched slower, and appeared less porous than the interior of the coatings. For samples fired at higher temperatures (400–800°C). the surfaces remained harder and etched slower than the interior. even though the porosity appeared to be evenly distributed throughout the thickness of the coating. It is proposed that this difference is due to inhomogeneities on two scales in the coatings: bulk porosity and skeletal strain.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 180: Symposium A – Better Ceramics Through Chemistry IV , 1990 , 605
Copyright
Copyright © Materials Research Society 1990

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1. Fabes, B.D. and Oliver, W.C., to be published in J. Non-Cryst. Sol. . (1990).Google Scholar
2. Oliver., W.C. MRS Bulletin. 11. (5) 15–19 (1986).Google Scholar
3. Pethica, J.B. and Oliver, W.C.. pp. 13–23 in Thin Films: Stresses and Mechanical Properties. edited by Bravman., C. Nix., W. Barnett., D. and Smith, D. Mater. Res. Soc. Proc . 130. Pittsburgh. PA. (1989).Google Scholar
4. Doerner, M.F.. and Nix., W.D. J. Mater. Res. 1. 601–609 (1986).Google Scholar
5. Fabes, B.D. and Oliver, W.C., to be published in Proceedings of Symposium K of the Spring Meeting of the Materials Research Society. San Francisco. Ca. 1990.Google Scholar
6. Cornett., K.D. Fabes., B.D. and Oliver., W.C. to be published in Proceedings of Symposium K of the Spring Meeting of the Materials Research Society. San Francisco. Ca. 1990.Google Scholar
7. Pliskin., W.A. J. Vac. Sci. Tech 14 (5) 1064–1081 (1977).Google Scholar
8. Paneva, A. and Ohlidal., I. Thin Solid Films. 145, 23–27 (1986).Google Scholar
9. Easwarakjanthan., T. Michel., C. and Ravelet., S. Surface Science . 197. 339–345 (1988)Google Scholar
10. Bu-abbud., G.H. Basura, N.M., and Woodlam, J.A., Thin Solid Films , 138, 27–41 (1986).Google Scholar
11. Fitch., J.T. Bjorkman., C.H. Summakeris, J.J.. and Lucovsky, G.. pp. 289–294 in Thin Films: Stresses and Mechanical Properties . edited by Bravman, C.. Nix, W., Barnett., D. and Smith, D.. Mater. Res. Soc. Proc . 130. Pittsburgh. PA. (1989).Google Scholar
12. Weisenbach., L. Klein, D.L., Zelinski, B.J.J., and Fabes., B.D. these Proceedings.Google Scholar
13. Scherer., G.W. J. Non-Cryst. Sol.. 89. 217–238 (1987).Google Scholar
14. Brinker., C.J. Tallant., D.R. Roth., E.P. and Ashley, C.S. J. Non-Cryst. Sol 82 117–126 (1986).Google Scholar
15. Fabes, B.D. and Uhlmann., D.R. J. Amer. Ceram. Soc. 73 (4) 978–988 (1990).Google Scholar