摘要:
A coating process employing coating techniques which allow an end-user to coat steel, rather than relying on a specialized location or supplier, is provided. The techniques produce a coating having high temperature oxidation resistance, greater corrosion resistance, and added surface lubricity to minimize die wear during a stamping process. The techniques also allow configurability with surface textures and allow thickness control. In addition, selective coating of a part or product, for example, around a weld area, and the addition of componentry, for example sensors, with the sensors being employed to monitor the coating, is possible. The coating includes a top functional layer including least one of Al, Ni, Fe, Si, B, Mg, Zn, Cr, h-BN, and Mo, and an interfacial layer with intermetallics formed therein. The interfacial layer can consist of at least one intermetallic, or the interfacial layer can include a mixture of the intermetallic(s) and steel.
摘要:
The present application relates to a method for enhancing metal corrosion resistance of a metal deposited on a substrate, the method comprises contacting the metal coated substrate with a treating composition comprising metal oxide nano-particles. Furthermore, the present application relates to a method for making a mirror comprising a substrate having a metal coated thereon, wherein the method comprises contacting the metal coated substrate with a treating composition comprising metal oxide nano-particles. Preferably, the metal oxide nano-particles are selected from one or more oxides of zinc, iridium, tin, aluminum, cerium, chromium, vanadium, titanium, iron, indium, copper, gold, palladium, platinum, manganese, cobalt, nickel, zirconium, molybdenum, rhodium, silver, indium, wolfram, iridium, lead, bismuth, samarium, erbium, or mixtures of these materials. In addition, the present application relates to the products obtainable by these methods.
摘要:
The invention relates to a method for producing an inlet lining on a stator-side component of a turbomachine, particularly a gas turbine, with at least the following steps: a) providing a stator-side component of a turbomachine, this component being provided with an inlet lining; b) providing a mixture consisting of a solvent, of particles of a metallic parent material for the inlet lining, said particles being insoluble in the solvent, and consisting of a filler, this filler having at least one constituent that is soluble in the solvent; c) applying the mixture to the stator-side component; d) drying the stator-side component and the mixture applied to the component while at least partially expelling the solvent in order to prepare a porous green body; e) diffusion heat treating the component for inwardly diffusing aluminum and/or chromium and for forming intermetallic phases in the forming inlet lining.
摘要:
An inlet valve is partially coated with a protective coating to resist corrosion and gas impingement when used in an internal combustion engine. The inlet valve has a hard cladding that is shaped to function as a valve seat. The hard cladding forms an interface with the valve head body, which is typically made of a softer metallic material than the hard cladding. The protective coating is bonded to the inlet valve and covers the cladding-body interface. The protective coating is resistant to corrosion, wear from gas impingement, and can withstand the high temperatures reached in internal combustion engines. A method for making the inlet valves generally includes masking a portion of the valve stem and the valve seat, applying a protective coating to cladding-body interface, and curing the protective coating or otherwise bonding the protective coating to the inlet valve. An apparatus for coating the valves includes a movable track, a plurality of attachment apparatus for holding a plurality of valves on the track, a spraying device for applying the coating, and an infrared lamp for curing the coating.
摘要:
The invention relates to a component with a substrate region as anti-oxidation coating, in particular, a component for a gas turbine, with a substrate surface and a substrate composition for the component, with a substrate region in the region of the substrate surface of the component, produced by diffusion therein of at least one metal. According to the invention, the component has a substrate composition based on nickel, with an aluminium component of more than 4.5 wt. %, whereby at least one metal of the platinum group is exclusively diffused in the substrate surface of the component to form the substrate region.
摘要:
The present disclosure relates to a method of incorporating lithium into a coating. One may supply a substrate having a coating containing aluminum ions and immersing the substrate including the coating containing aluminum ions in a water-soluble diketone including lithium for exchange where the ketone carbonyls are separated by at least one carbon atom. This may then be followed by exchanging a portion of the aluminum ions with lithium ions from the diketone soluton. Such coatings may have improved chemical resistance.
摘要:
The invention refers to a process for the formation of a thermal barrier coating (102) on a substrate (101), comprising the steps of: a) applying a bond coat (103) on the substrate (101); b) subjecting the bond coat (103) to a low activity aluminizing process, thus obtaining, above the bond coat (103), a temporary intermediate diffusion layer; c) applying, on the temporary intermediate diffusion layer, aluminium powder in suspension with a solvent or aqueous base, said aluminium powder having size distribution from 15 to 150 μm; d) performing a thermal treatment in a vacuum at a pressure from 10 -3 to 10 -5 bars, at a temperature from 800°C to 1050°C and with an active phase having duration in the range of 60 minutes to 4 hours, thus obtaining above the bond coat (103) an enriched intermediate diffusion layer (105); and e) applying a definitive barrier layer (104) on said enriched intermediate diffusion layer (105).
摘要:
Ein Verfahren zum Diffusionsbeschichten einer Oberfläche eines metallischen Substrats mit Zink umfasst die Schritte: a 1 ) Aufbringen einer Suspension, welche eine Flüssigkeit und Zink und/oder eine Zinklegierung als Diffusionsquelle bzw. Zinkspender enthält, auf die zu beschichtende Oberfläche des Substrats, oder a 2 ) Aufbringen einer Flüssigkeit auf die zu beschichtende Oberfläche des Substrats und anschließend Aufbringen von Zink und/oder einer Zinklegierung als Diffusionsquelle bzw. Zinkspender auf die Flüssigkeit, und b) Trocknen des in dem Schritt a 1 ) oder a 2 ) erhaltenen Substrats, c) Durchführen einer Wärmebehandlung des in dem Schritt b) erhaltenen Substrats bei einer Temperatur zwischen 200 und 500°C, aber unterhalb der Schmelztemperatur der Diffusionsquelle unter einer Schutzgasatmosphäre sowie d) Entfernen der in dem Schritt a 1 ) oder a 2 ) aufgebrachten Mischung.
摘要:
A method for diffusing titanium and nitride into a base material having a generally compact, granular microstructure (e.g., carbide). The method generally includes the steps of providing a base material having a generally compact, granular microstructure; providing a salt bath which includes sodium dioxide and a salt selected from the group consisting of sodium cyanate and potassium cyanate; dispersing metallic titanium formed by electrolysis of a titanium compound in the bath; heating the salt bath to a temperature ranging from about 43O°C to about 67O°C; and soaking the base material in the salt bath for a time of from about 10 minutes to about 24 hours. In accordance with another aspect of the present invention, the base material may further be treated with conventional surface treatments or coatings.