摘要:
A method of coating a substrate surface. The method includes plasma spraying a direct-spray component onto a substrate surface, and plasma spraying an over-spray component onto the substrate surface. The direct-spray and over-spray components form a plasma coating surface contacting at least a portion of the substrate surface.
摘要:
To apply a thermal barrier coating (10), a plasma jet (5) is generated by a plasma torch in a work chamber (2) and is directed to the surface of a substrate (3) introduced into the work chamber, and a ceramic coating material is applied to the substrate surface by means of PS-PVD, wherein the coating material is injected into the plasma jet as a powder and is partly or completely vaporized there. On applying the thermal barrier coating, in a first workstep the feed rate of the injected powder is set so that a large part of the injected powder vaporizes, wherein the coating material condenses from the vapor phase on the substrate surface and forms mixed phases with the material of the substrate surface. In a second workstep, the feed rate of the injected powder it increased by at least a factor of 5, whereby the portion of the powder which vaporizes is reduced and the coating material is deposited in the form of elongate columns which form an anisotropic microstructure and which are aligned substantially perpendicular to the substrate surface.
摘要:
According to at least one aspect of the present invention, a method is provided for forming a polymerized coating on a surface of a substrate. In at least one embodiment, the method comprises providing a plasma gun having an outlet; introducing a pre-polymer molecule into the outlet of the plasma gun to form a number of fragments of the pre-polymer molecule as a plasma output including a direct-spray component and an over-spray component; at least partially isolating the direct-spray component and the over-spray component from each other to respectively obtain an isolated directed-spray component and an isolated over-spray component; and depositing at least a portion of the isolated direct-spray component and the isolated over-spray component onto the surface of the substrate through the outlet to form a base polymerized coating. The plasma gun is optionally operated at atmospheric pressure.
摘要:
The disclosed subject matter includes devices and methods relating to anode assemblies and/or X-ray assemblies. In some aspects, a method of forming an X-ray assembly may include providing an anode base formed of a first material and including a first end. The method may include depositing a second material different from the first material over a first surface of the anode base to form a coated portion of the anode base. The coated portion may be configured such that some backscattered electrons do not travel beyond the coated portion.
摘要:
A method of coating a substrate surface. The method includes plasma spraying a direct-spray component onto a substrate surface, and plasma spraying an over-spray component onto the substrate surface. The direct-spray and over-spray components form a plasma coating surface contacting at least a portion of the substrate surface.
摘要:
The invention provides a cylinder bore spraying apparatus capable of carrying out honing processing and finishing after a sprayed film is formed in a cylinder bore in a state where the cylinder bore is deformed by a dummy head. A sprayed film is formed on an inner peripheral surface of a cylinder bore by a spraying gun in a state where a dummy head is pressed against a cylinder block such that a cylinder head is fastened to the cylinder block by a bolt. Thereby, a deformed state of a cylinder bore is simulated. A protection mask prevents the sprayed film from adhering to the dummy head and is detachably attached to the liner hole of the dummy head.
摘要:
The disclosed subject matter includes devices and methods relating to anode assemblies and/or X-ray assemblies. In some aspects, a method of forming an X-ray assembly may include providing an anode base formed of a first material and including a first end. The method may include depositing a second material different from the first material over a first surface of the anode base to form a coated portion of the anode base. The coated portion may be configured such that some backscattered electrons do not travel beyond the coated portion.
摘要:
A downhole tool for use in wellbores comprises a layer of hydrophobic material over a body, wherein the layer of hydrophobic material comprises a transition metal boride having a higher hydrophobicity than the body. The downhole tool may comprise a body having a composition and the layer of hydrophobic material comprising a discontinuous phase of the transition metal binder dispersed within a first continuous phase comprising a metal binder. The layer of material may be chemically bonded to the body. An interface between the body and the layer of material may comprise the transition metal boride dispersed within a second continuous phase comprising the metal binder and the composition of the body. Methods of forming downhole tools include forming such a layer of material at a surface of a body of a downhole tool.
摘要:
The invention provides a cylinder bore spraying apparatus capable of carrying out honing processing and finishing after a sprayed film is formed in a cylinder bore in a state where the cylinder bore is deformed by a dummy head. A sprayed film is formed on an inner peripheral surface of a cylinder bore by a spraying gun in a state where a dummy head is pressed against a cylinder block such that a cylinder head is fastened to the cylinder block by a bolt. Thereby, a deformed state of a cylinder bore is simulated. A protection mask prevents the sprayed film from adhering to the dummy head and is detachably attached to the liner hole of the dummy head.
摘要:
To apply a thermal barrier coating (10), a plasma jet (5) is generated by a plasma torch in a work chamber (2) and is directed to the surface of a substrate (3) introduced into the work chamber, and a ceramic coating material is applied to the substrate surface by means of PS-PVD, wherein the coating material is injected into the plasma jet as a powder and is partly or completely vaporized there. On applying the thermal barrier coating, in a first workstep the feed rate of the injected powder is set so that a large part of the injected powder vaporizes, wherein the coating material condenses from the vapor phase on the substrate surface and forms mixed phases with the material of the substrate surface. In a second workstep, the feed rate of the injected powder it increased by at least a factor of 5, whereby the portion of the powder which vaporizes is reduced and the coating material is deposited in the form of elongate columns which form an anisotropic microstructure and which are aligned substantially perpendicular to the substrate surface.