NDLI: The Influence of Processing on Crack Formation, Microstructure, Density and Hardness of Sol-Gel Derived Zirconia Films

Content Provider	Springer Nature Link
Author	Mehner, A. Datchary, W. Bleil, N. Zoch, H. W. Klopfstein, M. J. Lucca, D. A.
Copyright Year	2005
Abstract	Sol-gel zirconia films were deposited onto stainless steel and glass substrates by dip-coating. The correlation between the withdrawal speed, the sol composition and the resulting film thickness was studied. If a critical film thickness is exceeded, crack formation occurs. Cracking is one of the major drawbacks of the sol-gel deposition method because of the limitation of the maximum film thickness achievable without crack formation via single step deposition. The correlation between sol composition and crack formation was examined. Especially the role of polyethylene glycol (PEG)—an organic additive to reduce crack formation—was studied. Multi-layer coatings were deposited to characterize film density and hardness as a function of the heat treatment temperature from 400 to 800^∘C. The film density was found to be between 4 g cm$^{−3}$ to 5.5 g cm$^{−3}$ and the film hardness was in the range of 2.8 to 6.0 GPa, with a steep increase observed between 450 to 600^∘C.
Starting Page	25
Ending Page	32
Page Count	8
File Format	PDF
ISSN	09280707
Journal	Journal of Sol-Gel Science and Technology
Volume Number	36
Issue Number	1
e-ISSN	15734846
Language	English
Publisher	Springer-Verlag
Publisher Date	2005-10-01
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	sol-gel zirconia film cracking polyethylene glycol film hardness Ceramics, Glass, Composites, Natural Methods Inorganic Chemistry Optical and Electronic Materials Nanotechnology
Content Type	Text
Resource Type	Article
Subject	Ceramics and Composites Chemistry Materials Chemistry Biomaterials Condensed Matter Physics Electronic, Optical and Magnetic Materials

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