Schematic cross sections and pictures of (a) coatings with a wide Al2O3 area and thinner NiCrAlY area following the predefined geometry, and (b) coatings applied following an accurate geometry for both Al2O3 and NiCrAlY layers

Heating and electrically conductive layers

Department of Surface and Coating Technologies

Electrically conductive structures for electrical applications

The production of functional coatings on glass or glass ceramic substrates is of outstanding interest in modern product development due to the specific thermophysical properties of glasses, like low or even negative coefficient of thermal expansion, low heat conductivity and high dimensional stability. Ceramic-metal mixed layers as conductive coatings on glass ceramics were thermally sprayed with atmospheric plasma spray. The coatings presents high coating adhesion, coating mechanical stability and thermal resistance up to 200°C, with optimized residual stress distribution and electrical conductivity.

Cross section micrographs of (a) Al2O3–NiCrAlY bilayer, (b) TiO2 coating and (c) TiO2/NiCrAlY 90/10% mixed phases coating systems
Photo: IMTCCC - University of Stuttgart

P-525: FLORISTAN, M.; FONTARNAU, R.; KILLINGER, A.; GADOW, R.: Development of electrically conductive plasma sprayed coatings on glass ceramic substrates. In: Surface & Coatings Technology 205 (2010), S. 1021–1028

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