A method for coating a metal based component surface wherein said metal based component has an inner and/or outer surface portion that is to be coated, and which surface portion comprises a carbide forming composition. A cavity having one or more cavity walls, wherein said at least one inner and/or outer surface portion forms at least a portion of said one or more cavity walls is provided, and a portion of the cavity is filled with diamond powder. Thereafter gas is removed from the interface between said diamond powder and said at least one inner and/or outer surface portion, and the cavity is subjected to a hot pressing process for a predetermined time at a predetermined pressure and a predetermined temperature such that said diamond powder diffusion bonds to said at least one one inner and/or outer surface portion. Finally at least a part of said diamond powder is removed from said at least one cavity.

The object of the present invention is to produce a metal part equipped with a protection system, particularly for turbine blades for aircraft engines, having a thermal barrier that is improved in terms of thermal properties, adhesion to the part and resistance to oxidation/corrosion. In order to achieve this, the method according to the invention produces in a single step, from specific ceramics, coating layers using SPS technology. According to one embodiment, a metal part is produced according to an SPS flash sintering method and comprises a superalloy substrate (22), a metal sub-layer (21), a TGO oxide layer (25) and the thermal barrier (23) formed by said method from at least two chemically and thermally compatible ceramic layers (2a, 2b). A first ceramic (2a), referred to as the inner ceramic, is designed to have a substantially higher expansion coefficient. The outer ceramic (2b) is designed to have at least lower thermal conductivity, and a sintering temperature and/or maximum operating temperature that is substantially higher. The thermal barrier (23) has a composition and porosity gradient (3) from the metal sub-layer (21) to the outer ceramic (2b).

A method for fabricating an electrical conductor on a substrate by cold spraying includes propelling a solid powder composition that includes copper and highly oriented pyrolytic graphite using a gas propellant, and directing the solid powder composition towards the substrate at a velocity sufficient to cause the solid powder composition to undergo plastic deformation and to adhere to the substrate to deposit the electrical conductor thereon.

Hexavalent chromium-free slurry formulations which are suitable in the production of ceramic overlay coating systems are described. The formulations provide superior hot corrosion and heat oxidation protection for superalloy substrates. A basecoat slurry and topcoat slurry are provided. The basecoat slurry includes an aluminum phosphate based aqueous solution having a molar ratio of Al:PO.sub.4 higher than about 1:3 with the incorporation of metal oxide particles. The topcoat slurry includes an aluminum phosphate based aqueous solution having a molar ratio of Al:PO.sub.4 higher than about 1:3. Both of the basecoat slurry and the topcoat slurry are hexavalent chromium-free.

In an aspect, a method of filling a plurality of cooling holes in an airfoil component, the method comprises injecting a curable composition into a fill channel such that the curable composition flows through the fill channel to the plurality of cooling holes; forming a plurality of beads of the curable composition on a surface of the component over the plurality of cooling holes; directing a radiation to the respective beads in directions parallel to the respective central axes of the cooling holes associated with the respective beads to cure curable composition of the respective beads; and heating the component to cure the curable composition located in the fill channel.

An object of the present invention is to provide a functional material which achieves overall improvement in safety and usefulness of an oil. According to the present invention, the use of a calcined product of soft porous ancient marine humus makes it possible to improve a quality of various oils.

A method for protecting a coating on a surface of a component is provided. The method includes a coating step for coating at least a portion of the component with a ceramic slurry. A projecting step is used for projecting a pattern of light onto the component with a lithographic process to expose and solidify a ceramic layer. A removing step is used for removing unexposed portions of the ceramic slurry from the component. A heating step heats the component to sinter the ceramic layer. The ceramic layer comprises multiple ridges with each of the ridges having a curvilinear pattern.

A method for protecting a coating on a surface of a component is provided. The method includes a coating step for coating at least a portion of the component with a ceramic slurry. A projecting step is used for projecting a pattern of light onto the component with a lithographic process to expose and solidify a ceramic layer. A removing step is used for removing unexposed portions of the ceramic slurry from the component. A heating step heats the component to sinter the ceramic layer. The ceramic layer is formed with multiple fracture planes.

The present invention relates a coating powder comprising a rare earth oxyfluoride (Ln-OF) and having: an average particle size (D.sub.50) of 0.1 to 10 m, a pore volume of pores having a diameter of 10 m or smaller of 0.1 to 0.5 cm.sup.3/g as measured by mercury intrusion porosimetry, and a ratio of the maximum peak intensity (S0) assigned to a rare earth oxide (Ln.sub.xO.sub.y) in the 2 angle range of from 20 to 40 to the maximum peak intensity (S1) assigned to the rare earth oxyfluoride (Ln-OF) in the same range, S0/S1, of 1.0 or smaller in powder X-ray diffractometry using Cu-K rays or Cu-K.sub.1 rays.

The disclosure relates to a method of conducting a coiled tubing operation. In one implementation, a method includes forming a tubing string, the tubing string having an outer surface. The method also includes applying a coating to an application portion of the outer surface of the tubing string. The application portion includes a portion of the tubing string that will be disposed in a horizontal section of a wellbore, and the coating has a surface energy lower than a surface energy of the outer surface of the tubing string to thereby reduce friction between the tubing string and a casing disposed in the horizontal section of the wellbore as the tubing string is lowered into the wellbore.