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Strength Analysis of Self-Supported Films Produced by Aqueous Electrophoretic Deposition

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The goal of this work is to study the feasibility of the characterization of the fracture strength of porous alumina/zirconia thin layers by three-point bending and Weibull analysis. Films have been obtained by electrophoretic deposition on graphite and thermo-gelation of the deposit with carrageenan. On sintering, graphite is burned out and self-supported films are obtained. Strength values are well fitted to a simple two-parameter Weibull distribution. The fracture origins are subcritical growth cracks that originated at the surface irregularities associated with the processing method. A Weibull modulus around 3 is obtained.
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Document Type: Research Article

Affiliations: Instituto de Cerámica y Vidrio, CSIC, Campus de Cantoblanco, E-28049, Madrid, Spain

Publication date: 01 September 2005

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