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

2005 ◽  
Vol 36 (1) ◽  
pp. 25-32 ◽  
Author(s):  
A. Mehner ◽  
W. Datchary ◽  
N. Bleil ◽  
H.-W. Zoch ◽  
M. J. Klopfstein ◽  
...  
Keyword(s):  
Crack Formation ◽  
Sol Gel ◽  
Microstructure Density ◽  
Zirconia Films

Corrosion of Glazes Coated with Functional Films in Detergent Solutions

2006 ◽  
Vol 45 ◽  
pp. 156-161 ◽  
Author(s):  
Minna Piispanen ◽  
Linda Fröberg ◽  
Thomas Kronberg ◽  
Sami Areva ◽  
Leena Hupa
Keyword(s):  
Surface Roughness ◽  
Everyday Life ◽  
Surface Topography ◽  
Chemical Resistance ◽  
Sol Gel ◽  
Optical Microscope ◽  
Alkaline Environments ◽  
Zirconia Films ◽  
Excellent Chemical ◽  
Detergent Solutions

The goal of this work was to establish the compatibility of mat glazes with functional films known to render the surfaces with self-cleaning or easy-to-clean properties. Glazes with wollastonite, pseudowollastonite, diopside and zircon as the main crystalline phases in the surfaces were coated with fluoropolymer as well as ceramic, sol-gel derived titania and zirconia films. The glazes were soaked in typical detergent solutions used in everyday life up to four days. The surface roughness was measured with confocal optical microscope and the surface was imaged and analyzed with SEM/EDXA. When applied on wollastonite and pseudowollastonite containing glazes the functional films readily reacted in water solutions by pitting of the surface in the vicinity of the crystals. The ceramic titania and zirconia films showed better chemical resistance on wollastonite –free glazes, while the fluoropolymer film corroded in the most alkaline environments. The results indicate that functional films could be used also on rough surfaces without markedly affecting the surface topography. However, the films should be applied only on glazes with an excellent chemical resistance.

Transparent ion-conducting ceria-zirconia films made by sol–gel technology

1998 ◽  
Vol 53 (3-4) ◽  
pp. 341-347 ◽  
Author(s):  
X Luo ◽  
B Zhu ◽  
C Xia ◽  
G.A Niklasson ◽  
C.G Granqvist
Keyword(s):  
Sol Gel ◽  
Ion Conducting ◽  
Zirconia Films

The dependence of structural and mechanical properties on film thickness in sol-gel zirconia films

1998 ◽  
Vol 13 (2) ◽  
pp. 388-395 ◽  
Author(s):  
Melissa J. Paterson ◽  
Peter J. K. Paterson ◽  
Besim Ben-Nissan
Keyword(s):  
Mechanical Properties ◽  
Film Thickness ◽  
Sol Gel ◽  
Depth Profiling ◽  
Structure Morphology ◽  
Property Changes ◽  
Film Substrate ◽  
Thickness Independent ◽  
Zirconia Films ◽  
Measured Hardness

The structure, morphology, and mechanical properties of sol-gel zirconia films have been examined using XRD, AES depth profiling, AFM, and ultramicro indentation. There is a systematic variation in the structure and morphology of the zirconia films with increasing thickness. These changes include increases in the amount of monoclinic phase, substrate oxides, and a decrease in grain size. Ultramicro indentation measurements indicate measured hardness increases with film thickness. The highest hardness value was 6.12 GPa for a 900 nm thick film. However, these values may be influenced by the substrate oxide layer at the film/substrate interface which increases with film thickness. The modulus of the films appears to be thickness independent. As the films are made up of a number of separately fired layers, it appears that the property changes observed are also related to the number of thermal cycles experienced by the sample.

Facile preparation of sol–gel-derived ultrathin and high-dielectric zirconia films for capacitor devices

2012 ◽  
Vol 258 (24) ◽  
pp. 10084-10088 ◽  
Author(s):  
Hsin-Chiang You ◽  
Chun-Ming Chang ◽  
Tzeng-Feng Liu ◽  
Chih-Chia Cheng ◽  
Feng-Chih Chang ◽  
...  
Keyword(s):  
Sol Gel ◽  
Facile Preparation ◽  
High Dielectric ◽  
Zirconia Films
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