Abstract: A thermal barrier coating for an internal combustion engine includes an insulating coating applied on engine valves and exhaust components, where a chosen material of the insulating coating comprises a material of a sodium zirconium phosphate (“NZP”) class of ceramics that has a coefficient of thermal expansion (“CTE”) greater than 5 ppm/C.

Abstract: A thermal barrier coating for an internal combustion engine includes an insulating thermal spray coating, where a chosen material of the insulating thermal spray coating has a thermal conductivity lower than 2 W/mK in fully dense form and the chosen material includes a coefficient of thermal expansion within 5 ppm/K of a coefficient of thermal expansion of a material of a component of the internal combustion engine upon which the coating is placed.

Abstract: A coating on a substrate is disclosed having layers including yttrium aluminum garnet (YAG) and yttrium aluminum monoclinic (YAM).

Abstract: Thermal barrier coatings and methods to make such coatings present improved resistance to CMAS infiltration. The method for forming a thermal barrier coating includes applying a layer of the thermal barrier coating to a component having a surface, forming a plurality of first channels in the thermal barrier coating, and forming a plurality of second channels in the thermal barrier coating. The first channels extend through a thickness of the thermal barrier coating from an interface with the surface of the component to a free surface opposite the interface. The second channels are disposed between the free surface and the interface and extending lengthwise generally parallel to the free surface of the thermal barrier coating, wherein the thermal barrier coating comprises a material comprising yttrium aluminum garnet (YAG) or yttria stabilized zirconia (YSZ).

Abstract: A thermal barrier coating for an internal combustion engine includes an insulating thermal spray coating, where a chosen material of the insulating thermal spray coating has a thermal conductivity lower than 2 W/mK in fully dense form and the chosen material includes a coefficient of thermal expansion within 5 ppm/K of a coefficient of thermal expansion of a material of a component of the internal combustion engine upon which the coating is placed.

Abstract: A coating on a substrate is disclosed having layers including yttrium aluminum garnet (YAG) and yttrium aluminum monoclinic (YAM).

Abstract: A thermal barrier coating for an internal combustion engine includes an insulating thermal spray coating, where a chosen material of the insulating thermal spray coating has a thermal conductivity lower than 2 W/mK in fully dense form and the chosen material includes a coefficient of thermal expansion within 5 ppm/K of a coefficient of thermal expansion of a material of a component of the internal combustion engine upon which the coating is placed.

Abstract: A coating on a substrate is disclosed having layers including yttrium aluminum garnet (YAG) and yttrium aluminum perovskite (YAP).

Abstract: A thermal barrier coating for an internal combustion engine includes an insulating thermal spray coating, where a chosen material of the insulating thermal spray coating has a thermal conductivity lower than 2 W/mK in fully dense form and the chosen material includes a coefficient of thermal expansion within 5 ppm/K of a coefficient of thermal expansion of a material of a component of the internal combustion engine upon which the coating is placed.

Abstract: A method for manufacturing a coating includes dissolving at least one salt in a mixture of water and ethanol to form a precursor solution, adding an additive to the precursor solution to form a fuel solution, and injecting the fuel solution into a plasma flame. The additive includes at least one of urea or ammonium acetate. The additive functions as a fuel to increase a temperature of the plasma flame. The method further includes manufacturing the coating on a substrate. The coating includes a garnet structure including a predetermined amount of yttrium-aluminum, one or more first cracks extending completely through a thickness of the coating, and a porosity greater than ten volume percent.

Abstract: Thermal barrier coatings and methods to make such coatings present improved resistance to CMAS infiltration. The method for forming a thermal barrier coating includes applying a layer of the thermal barrier coating to a component having a surface, forming a plurality of first channels in the thermal barrier coating, and forming a plurality of second channels in the thermal barrier coating. The first channels extend through a thickness of the thermal barrier coating from an interface with the surface of the component to a free surface opposite the interface. The second channels are disposed between the free surface and the interface and extending lengthwise generally parallel to the free surface of the thermal barrier coating, wherein the thermal barrier coating comprises a material comprising yttrium aluminum garnet (YAG) or yttria stabilized zirconia (YSZ).

Abstract: A thermal barrier coating for an internal combustion engine includes an insulating thermal spray coating, where a chosen material of the insulating thermal spray coating has a thermal conductivity lower than 2 W/mK in fully dense form and the chosen material includes a coefficient of thermal expansion within 5 ppm/K of a coefficient of thermal expansion of a material of a component of the internal combustion engine upon which the coating is placed.

Abstract: Thermal barrier coatings and methods to make such coatings present improved resistance to CMAS infiltration. The method for forming a thermal barrier coating includes applying a layer of the thermal barrier coating to a component having a surface, forming a plurality of first channels in the thermal barrier coating, and forming a plurality of second channels in the thermal barrier coating. The first channels extend through a thickness of the thermal barrier coating from an interface with the surface of the component to a free surface opposite the interface. The second channels are disposed between the free surface and the interface and extending lengthwise generally parallel to the free surface of the thermal barrier coating.

Abstract: Thermal barrier coatings and methods to make such coatings present improved resistance to CMAS infiltration. The method for forming a thermal barrier coating includes applying a layer of the thermal barrier coating to a component having a surface, forming a plurality of first channels in the thermal barrier coating, and forming a plurality of second channels in the thermal barrier coating. The first channels extend through a thickness of the thermal barrier coating from an interface with the surface of the component to a free surface opposite the interface. The second channels are disposed between the free surface and the interface and extending lengthwise generally parallel to the free surface of the thermal barrier coating.

Abstract: A solution precursor plasma spray process (SPPS) produces compositionally graded and porosity graded coatings with no discrete interfaces and with reduced coating stress and improved coating durability. The disclosed SPPS process may fabricate superior thick monolithic thermal barrier coatings with engineered microstructural defects (cracks, pores) and thin, dense coatings for a variety of engineering applications. The disclosed coatings may possess a continuous variation of one or more physical properties selected from density, thermal conductivity, emissivity, thermal expansion coefficient, abrasion resistance, erosion resistance, hardness, fracture toughness, gas penetration resistance, liquid penetration resistance, elastic modulus, and strain tolerance.

Abstract: A coating on a substrate is disclosed having layers including yttrium aluminum garnet (YAG) and yttrium aluminum perovskite (YAP).

Abstract: An indicator device with wireless communication functionality for monitoring a position of a valve actuating device. The indicator device including a visual indication device having an outer beacon and an inner beacon received within the outer beacon and arranged to rotate relative to the outer beacon, a wireless module including at least one sensor, positioned within the inner beacon of the visual indication device, and configured to transmit a message using the wireless module, and a shaft extending through the visual indication device and coupled to the valve actuating device. Rotation of the shaft is detectable by the at least one sensor of the wireless module to indicate the position of the valve actuating device, and the indicator device is sealed to inhibit infiltration of liquid and penetration of debris to the wireless module.

Abstract: A microwave plasma apparatus for processing a material includes a plasma chamber, a microwave radiation source, and a waveguide guiding microwave radiation from the microwave radiation source to the plasma chamber. A process gas flows through the plasma chamber and the microwave radiation couples to the process gas to produce a plasma jet. A process material is introduced to the plasma chamber, becomes entrained in the plasma jet, and is thereby transformed to a stream of product material droplets or particles. The product material droplets or particles are substantially more uniform in size, velocity, temperature, and melt state than are droplets or particles produced by prior devices.

Abstract: The invention relates to the preparation of hydrated alkaline silicate compositions for making intumescent layers for fireproof glazing, said compositions being such that, when applied between glass sheets, they form a solid gel without drying, wherein the compositions are obtained from a stable and fluid solution subjected to partial dehydration at a limited temperature and under a reduced pressure for a duration shorter than that required for the mass curing of the final composition.

Abstract: Systems, methods, and devices are disclosed for producing substantially uniform droplets. The system includes a fluid reservoir vessel defining a fluid reservoir, a separation membrane at one end of the fluid reservoir, at least one capillary channel at an opposite end of the fluid reservoir, a solution dispenser, and a piezo actuator in contact with a separation membrane. The separation membrane has a thickness greater than about 0.2 mm, and the solution dispenser maintains the fluid reservoir filled with fluid such that the fluid simultaneously contacts the separation membrane and the capillary channel. The solution dispenser maintains the fluid reservoir under pressure to create a fluid stream exiting the capillary. The piezo actuator is in contact with the separation membrane on a side opposite that in contact with the fluid, and the piezo actuator transfers a pressure wave through the fluid in the fluid reservoir to break up the fluid stream into uniform droplets.