Fray Symposium - The Behavior Of Some Multifunctional Ceramic Structures TBC At Quick Thermal Shock Cycles This is because their main quality of being able to operate at high temperatures, based on small differences in coefficients of expansion obtained between the metal support and ceramic layer.
To achieve TBC structures were utilized ZrO2Y2O3 type powders with micron-and nanoscale structures, which were obtained by Air Plasma Spray techniques (APS) and High Velocity Oxygen Fuel (HVOF).
The dinamics cycles of surfaces deterioration, the structural changes induced by heat shock initiated at heating-cooling rates up to 100°C / s as well as the comparative study of bonding layers made with nanoscale or micron particles, but also and the study the layers sustainability, were made as a result of tests performed on a facility\'s own design, versatile, equipped with single azis robots for handling samples and monitoring systems, data acquisition and processing program with multiple interface types Virtual Instrumentation Engineering Workbench Laboratory (Lab).
The study of such intermediate structures thermal growth oxide (TGO) type at the interface support-bonding layer - TBC ceramic layer is important for revealing the mechanism of delamination of these types of materials.
The study highlights the positive effect of utilising nanometric powders in comparison with micrometer with reference to layer ceramic / metalic support adherence, ceramic layer porosity, the formation of micron vertical cracks relaxing extreme thermal stresses.
The study includes evaluation by the tribology light of wear factors associated to the turbo engines of cogeneration systems and tries to highlight the disruptive effect of rapid heating-cooling rates, respectively of thermal shock in relation with corrosive or erosive –adhesive wear utilising scanning electron microscopy by association ( SEM), combined with X-ray diffraction (XRD),transmission electron microscopy (TEM) phase analysis after the furnace cyclic oxidation.
"/> This is because their main quality of being able to operate at high temperatures, based on small differences in coefficients of expansion obtained between the metal support and ceramic layer.
To achieve TBC structures were utilized ZrO2Y2O3 type powders with micron-and nanoscale structures, which were obtained by Air Plasma Spray techniques (APS) and High Velocity Oxygen Fuel (HVOF).
The dinamics cycles of surfaces deterioration, the structural changes induced by heat shock initiated at heating-cooling rates up to 100°C / s as well as the comparative study of bonding layers made with nanoscale or micron particles, but also and the study the layers sustainability, were made as a result of tests performed on a facility\'s own design, versatile, equipped with single azis robots for handling samples and monitoring systems, data acquisition and processing program with multiple interface types Virtual Instrumentation Engineering Workbench Laboratory (Lab).
The study of such intermediate structures thermal growth oxide (TGO) type at the interface support-bonding layer - TBC ceramic layer is important for revealing the mechanism of delamination of these types of materials.
The study highlights the positive effect of utilising nanometric powders in comparison with micrometer with reference to layer ceramic / metalic support adherence, ceramic layer porosity, the formation of micron vertical cracks relaxing extreme thermal stresses.
The study includes evaluation by the tribology light of wear factors associated to the turbo engines of cogeneration systems and tries to highlight the disruptive effect of rapid heating-cooling rates, respectively of thermal shock in relation with corrosive or erosive –adhesive wear utilising scanning electron microscopy by association ( SEM), combined with X-ray diffraction (XRD),transmission electron microscopy (TEM) phase analysis after the furnace cyclic oxidation.
"/> This is because their main quality of being able to operate at high temperatures, based on small differences in coefficients of expansion obtained between the metal support and ceramic layer.
To achieve TBC structures were utilized ZrO2Y2O3 type powders with micron-and nanoscale structures, which were obtained by Air Plasma Spray techniques (APS) and High Velocity Oxygen Fuel (HVOF).
The dinamics cycles of surfaces deterioration, the structural changes induced by heat shock initiated at heating-cooling rates up to 100°C / s as well as the comparative study of bonding layers made with nanoscale or micron particles, but also and the study the layers sustainability, were made as a result of tests performed on a facility\'s own design, versatile, equipped with single azis robots for handling samples and monitoring systems, data acquisition and processing program with multiple interface types Virtual Instrumentation Engineering Workbench Laboratory (Lab).
The study of such intermediate structures thermal growth oxide (TGO) type at the interface support-bonding layer - TBC ceramic layer is important for revealing the mechanism of delamination of these types of materials.
The study highlights the positive effect of utilising nanometric powders in comparison with micrometer with reference to layer ceramic / metalic support adherence, ceramic layer porosity, the formation of micron vertical cracks relaxing extreme thermal stresses.
The study includes evaluation by the tribology light of wear factors associated to the turbo engines of cogeneration systems and tries to highlight the disruptive effect of rapid heating-cooling rates, respectively of thermal shock in relation with corrosive or erosive –adhesive wear utilising scanning electron microscopy by association ( SEM), combined with X-ray diffraction (XRD),transmission electron microscopy (TEM) phase analysis after the furnace cyclic oxidation.
" /> This is because their main quality of being able to operate at high temperatures, based on small differences in coefficients of expansion obtained between the metal support and ceramic layer.
To achieve TBC structures were utilized ZrO2Y2O3 type powders with micron-and nanoscale structures, which were obtained by Air Plasma Spray techniques (APS) and High Velocity Oxygen Fuel (HVOF).
The dinamics cycles of surfaces deterioration, the structural changes induced by heat shock initiated at heating-cooling rates up to 100°C / s as well as the comparative study of bonding layers made with nanoscale or micron particles, but also and the study the layers sustainability, were made as a result of tests performed on a facility\'s own design, versatile, equipped with single azis robots for handling samples and monitoring systems, data acquisition and processing program with multiple interface types Virtual Instrumentation Engineering Workbench Laboratory (Lab).
The study of such intermediate structures thermal growth oxide (TGO) type at the interface support-bonding layer - TBC ceramic layer is important for revealing the mechanism of delamination of these types of materials.
The study highlights the positive effect of utilising nanometric powders in comparison with micrometer with reference to layer ceramic / metalic support adherence, ceramic layer porosity, the formation of micron vertical cracks relaxing extreme thermal stresses.
The study includes evaluation by the tribology light of wear factors associated to the turbo engines of cogeneration systems and tries to highlight the disruptive effect of rapid heating-cooling rates, respectively of thermal shock in relation with corrosive or erosive –adhesive wear utilising scanning electron microscopy by association ( SEM), combined with X-ray diffraction (XRD),transmission electron microscopy (TEM) phase analysis after the furnace cyclic oxidation.
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2011-Sustainable Industrial Processing Summit
SIPS2011 Volume 7: Composites, Ceramics, Nanomaterials & Titanium Processing

Editors:Florian K
Publisher:Flogen Star OUTREACH
Publication Year:2012
Pages:646 pages
ISBN:978-0-9879917-6-8
ISSN:2291-1227 (Metals and Materials Processing in a Clean Environment Series)

    The Behavior Of Some Multifunctional Ceramic Structures TBC At Quick Thermal Shock Cycles

    Sorin DIMITRIU1; Victor Manoliu2;
    1UNIVERSITY POLITEHNICA OF BUCHAREST, Bucharest, Romania; 22AERONAUTICAL RESEARCH INSTITUTE - INCAS, Bucharest, Romania;
    Type of Paper: Regular
    Id Paper: 298
    Topic: 9

    Abstract:

    Ceramic thermal barrier coatings (TBC) is a widely accepted technical solution for protection at heat shock and temperature of so-called "hot parts" utilized in aerospace, energy, metallurgy industries,etc.This is because their main quality of being able to operate at high temperatures, based on small differences in coefficients of expansion obtained between the metal support and ceramic layer.To achieve TBC structures were utilized ZrO2Y2O3 type powders with micron-and nanoscale structures, which were obtained by Air Plasma Spray techniques (APS) and High Velocity Oxygen Fuel (HVOF).The dinamics cycles of surfaces deterioration, the structural changes induced by heat shock initiated at heating-cooling rates up to 100°C / s as well as the comparative study of bonding layers made with nanoscale or micron particles, but also and the study the layers sustainability, were made as a result of tests performed on a facility's own design, versatile, equipped with single azis robots for handling samples and monitoring systems, data acquisition and processing program with multiple interface types Virtual Instrumentation Engineering Workbench Laboratory (Lab).The study of such intermediate structures thermal growth oxide (TGO) type at the interface support-bonding layer - TBC ceramic layer is important for revealing the mechanism of delamination of these types of materials.The study highlights the positive effect of utilising nanometric powders in comparison with micrometer with reference to layer ceramic / metalic support adherence, ceramic layer porosity, the formation of micron vertical cracks relaxing extreme thermal stresses.The study includes evaluation by the tribology light of wear factors associated to the turbo engines of cogeneration systems and tries to highlight the disruptive effect of rapid heating-cooling rates, respectively of thermal shock in relation with corrosive or erosive –adhesive wear utilising scanning electron microscopy by association ( SEM), combined with X-ray diffraction (XRD),transmission electron microscopy (TEM) phase analysis after the furnace cyclic oxidation.

    Keywords:

    Thermal Barrier Coating (TBC), plasma–sprayed zirconia APS, thermal schok, thermal palling

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    Cite this article as:

    DIMITRIU S and Manoliu V. The Behavior Of Some Multifunctional Ceramic Structures TBC At Quick Thermal Shock Cycles. In: Florian K, editors. Sustainable Industrial Processing Summit SIPS2011 Volume 7: Composites, Ceramics, Nanomaterials & Titanium Processing. Volume 7. Montreal(Canada): FLOGEN Star Outreach;2012. p..