The Experts below are selected from a list of 16302 Experts worldwide ranked by ideXlab platform

Peter Moore - One of the best experts on this subject based on the ideXlab platform.

  • thermal Shock Testing of thermal barrier coating bondcoat systems
    Journal of Materials Engineering and Performance, 2004
    Co-Authors: Ann Bolcavage, John Foster, Albert Feuerstein, Peter Moore
    Abstract:

    Various methods of thermal Shock Testing are used by aircraft and industrial gas turbine engine (IGT) manufacturers to characterize new thermal barrier coating systems in the development stage as well as for quality control. The cyclic furnace oxidation test (FCT), widely used in aircraft applications, stresses the ceramic/bondcoat interface, predominantly through thermally grown oxide (TGO) growth stress. The jet engine thermal Shock (JETS) test, derived from a burner rig test, creates a large thermal gradient across the thermal barrier coating (TBC), as well as thermomechanical stress at the interface. For IGT applications with long high-temperature exposure times, a combination of isothermal preoxidation and thermal Shock Testing in a fluidized bed reactor may better represent the actual engine conditions while both types of stress are present. A comparative evaluation of FCT, JETS, and a combined isothermal oxidation and fluidized bed thermal Shock test has been conducted for selected ceramic/bondcoat systems. The results and the failure mechanisms as they relate to the TBC system are discussed. A recommendation on the test method of choice providing best discrimination between the thermal Shock resistance of the ceramic layer, the ceramic/bondcoat interface, and even substrate related effects, is given.

  • Thermal Shock Testing of thermal barrier coating/bondcoat systems
    Journal of Materials Engineering and Performance, 2004
    Co-Authors: Ann Bolcavage, John Foster, Albert Feuerstein, Peter Moore
    Abstract:

    Various methods of thermal Shock Testing are used by aircraft and industrial gas turbine engine (IGT) manufacturers to characterize new thermal barrier coating systems in the development stage as well as for quality control. The cyclic furnace oxidation test (FCT), widely used in aircraft applications, stresses the ceramic/bondcoat interface, predominantly through thermally grown oxide (TGO) growth stress. The jet engine thermal Shock (JETS) test, derived from a burner rig test, creates a large thermal gradient across the thermal barrier coating (TBC), as well as thermomechanical stress at the interface. For IGT applications with long high-temperature exposure times, a combination of isothermal preoxidation and thermal Shock Testing in a fluidized bed reactor may better represent the actual engine conditions while both types of stress are present. A comparative evaluation of FCT, JETS, and a combined isothermal oxidation and fluidized bed thermal Shock test has been conducted for selected ceramic/bondcoat systems. The results and the failure mechanisms as they relate to the TBC system are discussed. A recommendation on the test method of choice providing best discrimination between the thermal Shock resistance of the ceramic layer, the ceramic/bondcoat interface, and even substrate related effects, is given.

Ann Bolcavage - One of the best experts on this subject based on the ideXlab platform.

  • thermal Shock Testing of thermal barrier coating bondcoat systems
    Journal of Materials Engineering and Performance, 2004
    Co-Authors: Ann Bolcavage, John Foster, Albert Feuerstein, Peter Moore
    Abstract:

    Various methods of thermal Shock Testing are used by aircraft and industrial gas turbine engine (IGT) manufacturers to characterize new thermal barrier coating systems in the development stage as well as for quality control. The cyclic furnace oxidation test (FCT), widely used in aircraft applications, stresses the ceramic/bondcoat interface, predominantly through thermally grown oxide (TGO) growth stress. The jet engine thermal Shock (JETS) test, derived from a burner rig test, creates a large thermal gradient across the thermal barrier coating (TBC), as well as thermomechanical stress at the interface. For IGT applications with long high-temperature exposure times, a combination of isothermal preoxidation and thermal Shock Testing in a fluidized bed reactor may better represent the actual engine conditions while both types of stress are present. A comparative evaluation of FCT, JETS, and a combined isothermal oxidation and fluidized bed thermal Shock test has been conducted for selected ceramic/bondcoat systems. The results and the failure mechanisms as they relate to the TBC system are discussed. A recommendation on the test method of choice providing best discrimination between the thermal Shock resistance of the ceramic layer, the ceramic/bondcoat interface, and even substrate related effects, is given.

  • Thermal Shock Testing of thermal barrier coating/bondcoat systems
    Journal of Materials Engineering and Performance, 2004
    Co-Authors: Ann Bolcavage, John Foster, Albert Feuerstein, Peter Moore
    Abstract:

    Various methods of thermal Shock Testing are used by aircraft and industrial gas turbine engine (IGT) manufacturers to characterize new thermal barrier coating systems in the development stage as well as for quality control. The cyclic furnace oxidation test (FCT), widely used in aircraft applications, stresses the ceramic/bondcoat interface, predominantly through thermally grown oxide (TGO) growth stress. The jet engine thermal Shock (JETS) test, derived from a burner rig test, creates a large thermal gradient across the thermal barrier coating (TBC), as well as thermomechanical stress at the interface. For IGT applications with long high-temperature exposure times, a combination of isothermal preoxidation and thermal Shock Testing in a fluidized bed reactor may better represent the actual engine conditions while both types of stress are present. A comparative evaluation of FCT, JETS, and a combined isothermal oxidation and fluidized bed thermal Shock test has been conducted for selected ceramic/bondcoat systems. The results and the failure mechanisms as they relate to the TBC system are discussed. A recommendation on the test method of choice providing best discrimination between the thermal Shock resistance of the ceramic layer, the ceramic/bondcoat interface, and even substrate related effects, is given.

Albert Feuerstein - One of the best experts on this subject based on the ideXlab platform.

  • thermal Shock Testing of thermal barrier coating bondcoat systems
    Journal of Materials Engineering and Performance, 2004
    Co-Authors: Ann Bolcavage, John Foster, Albert Feuerstein, Peter Moore
    Abstract:

    Various methods of thermal Shock Testing are used by aircraft and industrial gas turbine engine (IGT) manufacturers to characterize new thermal barrier coating systems in the development stage as well as for quality control. The cyclic furnace oxidation test (FCT), widely used in aircraft applications, stresses the ceramic/bondcoat interface, predominantly through thermally grown oxide (TGO) growth stress. The jet engine thermal Shock (JETS) test, derived from a burner rig test, creates a large thermal gradient across the thermal barrier coating (TBC), as well as thermomechanical stress at the interface. For IGT applications with long high-temperature exposure times, a combination of isothermal preoxidation and thermal Shock Testing in a fluidized bed reactor may better represent the actual engine conditions while both types of stress are present. A comparative evaluation of FCT, JETS, and a combined isothermal oxidation and fluidized bed thermal Shock test has been conducted for selected ceramic/bondcoat systems. The results and the failure mechanisms as they relate to the TBC system are discussed. A recommendation on the test method of choice providing best discrimination between the thermal Shock resistance of the ceramic layer, the ceramic/bondcoat interface, and even substrate related effects, is given.

  • Thermal Shock Testing of thermal barrier coating/bondcoat systems
    Journal of Materials Engineering and Performance, 2004
    Co-Authors: Ann Bolcavage, John Foster, Albert Feuerstein, Peter Moore
    Abstract:

    Various methods of thermal Shock Testing are used by aircraft and industrial gas turbine engine (IGT) manufacturers to characterize new thermal barrier coating systems in the development stage as well as for quality control. The cyclic furnace oxidation test (FCT), widely used in aircraft applications, stresses the ceramic/bondcoat interface, predominantly through thermally grown oxide (TGO) growth stress. The jet engine thermal Shock (JETS) test, derived from a burner rig test, creates a large thermal gradient across the thermal barrier coating (TBC), as well as thermomechanical stress at the interface. For IGT applications with long high-temperature exposure times, a combination of isothermal preoxidation and thermal Shock Testing in a fluidized bed reactor may better represent the actual engine conditions while both types of stress are present. A comparative evaluation of FCT, JETS, and a combined isothermal oxidation and fluidized bed thermal Shock test has been conducted for selected ceramic/bondcoat systems. The results and the failure mechanisms as they relate to the TBC system are discussed. A recommendation on the test method of choice providing best discrimination between the thermal Shock resistance of the ceramic layer, the ceramic/bondcoat interface, and even substrate related effects, is given.

John Foster - One of the best experts on this subject based on the ideXlab platform.

  • thermal Shock Testing of thermal barrier coating bondcoat systems
    Journal of Materials Engineering and Performance, 2004
    Co-Authors: Ann Bolcavage, John Foster, Albert Feuerstein, Peter Moore
    Abstract:

    Various methods of thermal Shock Testing are used by aircraft and industrial gas turbine engine (IGT) manufacturers to characterize new thermal barrier coating systems in the development stage as well as for quality control. The cyclic furnace oxidation test (FCT), widely used in aircraft applications, stresses the ceramic/bondcoat interface, predominantly through thermally grown oxide (TGO) growth stress. The jet engine thermal Shock (JETS) test, derived from a burner rig test, creates a large thermal gradient across the thermal barrier coating (TBC), as well as thermomechanical stress at the interface. For IGT applications with long high-temperature exposure times, a combination of isothermal preoxidation and thermal Shock Testing in a fluidized bed reactor may better represent the actual engine conditions while both types of stress are present. A comparative evaluation of FCT, JETS, and a combined isothermal oxidation and fluidized bed thermal Shock test has been conducted for selected ceramic/bondcoat systems. The results and the failure mechanisms as they relate to the TBC system are discussed. A recommendation on the test method of choice providing best discrimination between the thermal Shock resistance of the ceramic layer, the ceramic/bondcoat interface, and even substrate related effects, is given.

  • Thermal Shock Testing of thermal barrier coating/bondcoat systems
    Journal of Materials Engineering and Performance, 2004
    Co-Authors: Ann Bolcavage, John Foster, Albert Feuerstein, Peter Moore
    Abstract:

    Various methods of thermal Shock Testing are used by aircraft and industrial gas turbine engine (IGT) manufacturers to characterize new thermal barrier coating systems in the development stage as well as for quality control. The cyclic furnace oxidation test (FCT), widely used in aircraft applications, stresses the ceramic/bondcoat interface, predominantly through thermally grown oxide (TGO) growth stress. The jet engine thermal Shock (JETS) test, derived from a burner rig test, creates a large thermal gradient across the thermal barrier coating (TBC), as well as thermomechanical stress at the interface. For IGT applications with long high-temperature exposure times, a combination of isothermal preoxidation and thermal Shock Testing in a fluidized bed reactor may better represent the actual engine conditions while both types of stress are present. A comparative evaluation of FCT, JETS, and a combined isothermal oxidation and fluidized bed thermal Shock test has been conducted for selected ceramic/bondcoat systems. The results and the failure mechanisms as they relate to the TBC system are discussed. A recommendation on the test method of choice providing best discrimination between the thermal Shock resistance of the ceramic layer, the ceramic/bondcoat interface, and even substrate related effects, is given.

Ruzhuan Wang - One of the best experts on this subject based on the ideXlab platform.

  • thermal Shock study of ceramic materials subjected to heating using a simple developed test method
    Journal of Alloys and Compounds, 2015
    Co-Authors: Ruzhuan Wang, Weiguo Li, Dingyu Li, Xueliang Shen, Bo Li, X J Zhang, Xiaozhi Wu
    Abstract:

    Abstract The research for the thermal Shock resistance of ceramic materials during the ascending thermal Shock has great significance. In this paper, a simple test method for the thermal Shock Testing of ceramic materials during heating is developed by refitting the quenching furnace. The method can control the target temperature of thermal Shock and temperature distribution in the surface of materials better compared to the existing commonly used Testing methods. During the Testing, the specimen is designed to fall into a furnace chamber with a desired thermal Shock temperature accurately and momentarily. The retained flexural strength of the specimen after thermal Shocking is obtained. The results show that the thermal Shock resistance of ceramic materials is very sensitive to the thermal Shock temperature. The retained flexural strength of specimen without optical cracks on the surface can degrade seriously owing to the emergence of cracks in the interior of materials. The microstructure evolution in the interior of materials such as the phase transition has great effect on the thermal Shock resistance of ceramic materials. This study will provide the technical reserves and theoretical bases for the research of the thermal Shock resistance of ceramic materials under heating.