Abstract:
Ce procédé comprend les étapes suivantes: fourniture d'un dispositif de greffage (20) comprenant une torche (26) produisant une flamme (28) dans un volume d'air ambiant, et un support (33) de refroidissement disposé en regard de la flamme (28); défilement continu du matériau allongé (14) à travers la flamme (28) entre la torche (26) et le support de refroidissement (33); greffage continu de nanostructures de carbone (16) sur le matériau allongé (14) lors de son défilement à travers la flamme (28).
Abstract:
Ce procédé comprend les étapes suivantes : - amenée d'au moins un gaz combustible à travers une torche (22) pour engendrer une flamme (24) à la sortie de la torche (22); - disposition d'un substrat (90) en regard et à l'écart de la sortie de la torche (22), la flamme (24) entrant en contact avec le substrat (90); - injection d'un matériau dispersé dans la flamme (24); - croissance de nanostructures dans la flamme (24). Le matériau dispersé est formé de particules solides contenant de l'oxygène, au moins une partie des nanostructures formées dans la flamme (24) étant greffées à la surface des particules.
Abstract:
The present disclosure generally relates to systems, apparatus and methods of plasma spraying and plasma treatment of materials based on high specific energy molecular plasma gases that may be used to generate a selected plasma. The present disclosure is also relates to the design of plasma torches and plasma systems to optimize such methods.
Abstract:
A method and apparatus for forming an electrochemical layer of a thin film battery is provided. A precursor mixture comprising electrochemically active precursor particles dispersed in a carrying medium is provided to a processing chamber and thermally treated using a combustible gas mixture also provided to the chamber. The precursor is converted to nanocrystals by the thermal energy, and the nanocrystals are deposited on a substrate. A second precursor may be blended with the nanocrystals as they deposit on the surface to enhance adhesion and conductivity.
Abstract:
A method and apparatus for forming an electrochemical layer of a thin film battery is provided. A precursor mixture comprising electrochemically active precursor particles dispersed in a carrying medium is provided to a processing chamber and thermally treated using a combustible gas mixture also provided to the chamber. The precursor is converted to nanocrystals by the thermal energy, and the nanocrystals are deposited on a substrate. A second precursor may be blended with the nanocrystals as they deposit on the surface to enhance adhesion and conductivity.
Abstract:
A composite body that is spall resistant and comprises a substantially discontinuous cermet phase in a substantially continuous metal rich matrix phase. The composite body is typically bonded to a substrate to form a hardfacing on the substrate. The composite body exhibits ductile phase toughening with a strain to failure of at least about 2 percent, a modulus of elasticity of less than about 46 million pounds per square inch, and a density of less than about 7 grams per cubic centimeter. The metal rich matrix phase between the ceramic rich regions in the composite body has an average minimum span of about 0.5 to 8 microns to allow ductility in the composite body. The composite body has a Vicker's hardness number of greater than approximately 650. The discontinuous cermet phase is in the form of ceramic rich regions embedded within the composite body, and it includes ceramic particles and a cermet binder. The ceramic particles having a Moh's hardness of at least approximately 7.5, a modulus of elasticity of less than approximately 46 million pounds per square inch, and an average particle size of from about 0.1 to 10 microns. The ceramic rich regions exhibit high hardness as compared with the matrix phase.
Abstract:
A method is disclosed for applying thermal spray particles to a composite, wherein the method includes the steps of providing a composite that includes a thermally sensitive surface, and applying the thermal spray particles at a temperature that is high enough to cause a temperature-dependent change in the thermally sensitive surface of the composite. The temperature-dependent change improves adhesion between the thermal spay particles and the composite.
Abstract:
Nano- and micron sized metal oxide and mixed metal oxide particles are injected into a high temperature region wherein the temperature is between about 400 ° C and less than 2000 ° C, and collected as particles or as coatings wherein a particulate nature is substantially maintained. The particles are altered in at least one of phase, morphology, composition, and particle size distribution, and may achieve further changes in these characteristics by coinjection of metal oxide precursor in liquid form.
Abstract:
An improved design for a thermal spray gun includes an atomizer (70, 102), a combustion chamber (10, 104), an interconnector (30, 106), and a barrel (50, 108). Also included are methods for thermally spraying a substrate. One method for thermally spraying a substrate includes directing at least one fuel stream and at least one oxidant stream to a thermal spray gun with the improved design to form a thermal spray and directing the thermal spray against the surface to apply the coating.
Abstract:
A method for controlling a spray form process is disclosed. The method uses an infrared sensor, in the form of a two-wavelength imaging pyrometer (16) to provide real-time measurement of the surface temperature distribution of a product produced by the spraying process.