Hardfacing is used to protect wear surfaces of drill bits and other downhole tools. A hardfacing member can be formed by heating a metal matrix material, e.g., via a laser process, injecting a plurality of particles into the heated metal matrix material, disposing the mixture on at least a portion of a substrate thereby forming a hardfacing member having a particle-embedded metal matrix material, and attaching the hardfacing member to a main body.

Disclosed herein are methods for producing an ultra-dense and ultra-smooth ceramic coating. A method includes feeding a slurry of ceramic particles into a plasma sprayer. The plasma sprayer generates a stream of particles directed toward the substrate, forming a ceramic coating on the substrate upon contact.

The invention discloses an iron-based amorphous nanocrystalline laser cladding composite coating and preparation and test methods thereof; the composition of the cladding composite coating meets the molecular formula: FeaCobNicBdSiyNbe, wherein a, b, c, d, y, and e respectively represent the atomic percentage of the corresponding alloy element; a plus b plus c plus d plus y plus e equals 100; the preparation method is: weighing the raw materials and mixing to obtain the alloy powder, substrate pretreatment, tiling the alloy powder on the surface of the substrate, the laser beam is scanned vertically to perform laser cladding on the alloy powder. The composite has a certain amorphous content, high microhardness, excellent wear resistance, and outstanding fracture strength. The preparation process is simple, the raw materials do not contain rare earths or volatile elements, and the application prospect is broad.

The invention discloses an iron-based amorphous nanocrystalline laser cladding composite coating and preparation and test methods thereof; the composition of the cladding composite coating meets the molecular formula: FeaCobNicBdSiyNbe, wherein a, b, c, d, y, and e respectively represent the atomic percentage of the corresponding alloy element; a plus b plus c plus d plus y plus e equals 100; the preparation method is: weighing the raw materials and mixing to obtain the alloy powder, substrate pretreatment, tiling the alloy powder on the surface of the substrate, the laser beam is scanned vertically to perform laser cladding on the alloy powder. The composite has a certain amorphous content, high microhardness, excellent wear resistance, and outstanding fracture strength. The preparation process is simple, the raw materials do not contain rare earths or volatile elements, and the application prospect is broad.

A method of forming an implant having a porous tissue ingrowth structure and a bearing support structure. The method includes depositing a first layer of a metal powder onto a substrate, scanning a laser beam over the powder so as to sinter the metal powder at predetermined locations, depositing at least one layer of the metal powder onto the first layer and repeating the scanning of the laser beam.

A method of forming an implant having a porous tissue ingrowth structure and a bearing support structure. The method includes depositing a first layer of a metal powder onto a substrate, scanning a laser beam over the powder so as to sinter the metal powder at predetermined locations, depositing at least one layer of the metal powder onto the first layer and repeating the scanning of the laser beam.

The method makes it possible to produce a decorated element for a timepiece or piece of jewelry. This decorated element may be, for example, a watch dial. The method includes the steps of taking a base substrate, and micromachining on said base substrate a mould or decorative partitions in a programmed pattern, and filling the mould or the decorative partitions with at least one filler material to obtain the decorated element. The filler material may be enamel.

The method makes it possible to produce a decorated element for a timepiece or piece of jewelry. This decorated element may be, for example, a watch dial. The method includes the steps of taking a base substrate, and micromachining on said base substrate a mould or decorative partitions in a programmed pattern, and filling the mould or the decorative partitions with at least one filler material to obtain the decorated element. The filler material may be enamel.

A method of controllably coating a fiber preform has been developed. The method includes infiltrating a fiber preform with a first solvent to form a solvent-filled preform. After the infiltration, a slurry is applied to one or more outer surfaces of the solvent-filled preform to form a slurry coating thereon. The slurry coating comprises particulate solids dispersed in a second solvent having a vapor pressure higher than that of the first solvent. The slurry coating and the solvent-filled preform are dried. During drying, the second solvent evaporates from the slurry coating before the first solvent evaporates from the solvent-filled preform. The slurry coating dries to form a porous surface coating comprising the particulate solids on the one or more outer surfaces of the solvent-filled preform. The drying of the solvent-filled preform continues after formation of the porous surface coating to remove the first solvent.

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.