Abstract:
An apparatus and method for forming a fusible coating or structure comprising a combustor that is operative to combust a fuel and contain the resulting flame to produce combustion products; means for cooling the combustion products to produce a hot carrier gas stream; and means for introducing fusible material into the hot carrier gas stream.
Abstract:
A method of applying a wear-resistant coating to aluminum sliding contact wear surfaces is disclosed. The method includes providing a plurality of parts having sliding contact wear surfaces and thermal spray coating at least one of a composite aluminum oxide and PTFE or a blend of aluminum oxide and PTFE. The disclosed method may be used to repair aluminum parts subject to sliding contact wear as well as in the design of new aluminum parts subject to sliding contact wear. Improved compressor bleed valves for gas turbine engines and improved fan exit case assemblies are also disclosed.
Abstract:
A method for protecting a boat hull is provided. A first polymer thermal spray coating is applied to a surface of a boat hull and to a rigid member. The rigid member is placed at a desired location on the surface of the boat hull. The rigid member is heated such that the first polymer thermal spray coating adhesively bonds the rigid member to the surface of the boat hull.
Abstract:
Disclosed is a process for applying an insulative coating to a mandrel used in an electromagnetic telemetry antenna assembly. One process includes applying a bond coat to at least a portion of an outer radial surface of a mandrel; applying an electrical isolation layer to the bond coat; applying a first sealant layer to the electrical isolation layer; and heat treating the mandrel in an oven.
Abstract:
A method of manufacturing a thermal barrier coated article including: forming an article having a first and second surface, the article having projections extending from the first surface away from the first and second surface, each projection having a first end adjacent the first surface and a second end remote from the first surface, each projection having a blind passage extending therethrough from the second surface through the article towards the second end of the projection, the blind passage in the projection being closed at the second end of the projection, depositing a thermal barrier coating on the first surface around each of the projections and on the second ends, removing the thermal barrier coating from the second ends, and removing the second end of each projection to form a passage through the projection extending from the second surface through the article to the second end of the projection.
Abstract:
Disclosed is a surface treatment device with a robust nozzle configuration. The device includes a nozzle for ejecting a primary stream of combustible substance to a gaseous atmosphere in an ejection direction; an ignition unit configured to ignite the primary stream in a point of ignition; and an impermeable shield providing a planar surface that is substantially opposite to the ejection direction and has in front of the nozzle a hole that allows passage of the primary stream. The shield is positioned between the nozzle and the point of ignition of the primary stream. The shield is advantageously dimensioned to allow simultaneous passage of the primary stream ejected from the nozzle and a circumferential secondary stream of gas from the gaseous atmosphere via the hole.
Abstract:
A method of applying a barrier coating to a component is provided. The method includes providing the component and preparing a slurry comprising a mixture. The mixture includes about 50-90 percent by volume fraction of a barrier coating composition, the barrier coating composition and 10-50 percent by volume fraction of a plurality of short fibers. The method includes applying at least one layer of the slurry to at least a portion of the component and curing the slurry on the portion of the component to obtain a fiber-reinforced barrier coating.
Abstract:
A method produces a biocidal coating on a substrate, by a flame assisted chemical vapour deposition and a plasma assisted chemical vapour deposition step. In a first step, a biocidal material is deposited onto the substrate, possibly in combination with a first coating forming material. The second step provides a coating forming material onto the first layer, possibly in combination with a second biocidal material. The first step can be a flame assisted CVD step and the second step a plasma assisted CVD step or vice versa.
Abstract:
Refractory metal powders are dehydrided in a device which includes a preheat chamber for retaining the metal powder fully heated in a hot zone to allow diffusion of hydrogen out of the powder. The powder is cooled in a cooling chamber for a residence time sufficiently short to prevent re-absorbtion of the hydrogen by the powder. The powder is consolidated by impact on a substrate at the exit of the cooling chamber to build a deposit in solid dense form on the substrate.
Abstract:
A method for simulating of the thickness of a coating which is placed onto a substrate surface is disclosed. The thickness is simulated using mass conservation principles. In a preferred embodiment at least one reference spray trial is performed, the correlation of a single spray profile to at least one spray process parameter is determined, the single spray profile is simulated using mass conservation principles to an incoming powder jet stream.