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Effect of heating cycle on the structure of Ag films deposited over porcelain substrates

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Abstract

Silver films were deposited over porcelain substrates by using flexible adhesive transfer layers. These films were produced in order to use porcelain utensils over household induction heating plates. Mixtures of different glass ceramic powders with silver powder are used to prepare the self-transfer patterns. These patterns are deposited over porcelain substrates and sintered using different heating cycles. One defect observed in such films is the presence of porosity either at the Ag/porcelain interface or inside the Ag film structure. While lower sintering temperatures produce less porosity, the microstructure of the Ag layer at lower temperatures is no longer composed of a contiguous network of large silver agglomerates. Consequently, the heating capability of the layer through electromagnetic induction is affected. Finally a sintering cycle is proposed for which the film properties are least modified with a minimum level of porosity.

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References

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Authors and Affiliations

  1. Metallurgy and Materials Engineering, Ghulam Ishaq Khan Institute of Engineering Sciences and Technology, 23460, NWFP, Topi, Pakistan

    A. A. Khan

  2. Laboratory of Ceramic Materials and Surface Treatments (LMCTS) (URA CNRS 320), Faculte des Sciences, University of Limoges, 123 Av. Albert Thomas, 87060, Limoges CEDEX, France

    J. C. Labbe

Authors
  1. A. A. Khan
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  2. J. C. Labbe
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Khan, A.A., Labbe, J.C. Effect of heating cycle on the structure of Ag films deposited over porcelain substrates. J. of Materi Eng and Perform 7, 757–760 (1998). https://doi.org/10.1361/105994998770347323

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  • DOI: https://doi.org/10.1361/105994998770347323

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