Various embodiment related to methods for coating a metal substrate with a silicon nitride ceramic coating are disclosed herein. The metal substrate may be a biomedical implant with a laser-cladded silicon nitride coating for promoting osteogenesis.

Intended is to improve the corrosion resistance of an overlay used in a nuclear power plant, and to reduce dissolution of cobalt from an overlay. The corrosion and wear resistant overlay 7 is formed along a surface of a base 2 by laser lamination modeling, and is configured from a plurality of metal layers 1a, 1b, 1c, and 1d of a Co-base alloy. The thickness of carbide eutectics that precipitate in the metal layers 1a, 1b, 1c, and 1d is the largest in the metal layer 1a closest to the base 2, and is gradually smaller in the metal layers 1b, 1c, and 1d farther away from the base 2. The intensity of the laser beam applied to form layers by laser lamination modeling is adjusted so that the carbide eutectics that precipitate in at least the outermost metal layer 1d have a controlled size of 10 μm or less.

Intended is to improve the corrosion resistance of an overlay used in a nuclear power plant, and to reduce dissolution of cobalt from an overlay. The corrosion and wear resistant overlay 7 is formed along a surface of a base 2 by laser lamination modeling, and is configured from a plurality of metal layers 1a, 1b, 1c, and 1d of a Co-base alloy. The thickness of carbide eutectics that precipitate in the metal layers 1a, 1b, 1c, and 1d is the largest in the metal layer 1a closest to the base 2, and is gradually smaller in the metal layers 1b, 1c, and 1d farther away from the base 2. The intensity of the laser beam applied to form layers by laser lamination modeling is adjusted so that the carbide eutectics that precipitate in at least the outermost metal layer 1d have a controlled size of 10 μm or less.

Process for formation of composite coatings and composite coatings formed thereby. A process for formation of a metal-matrix composite coating on a surface of a substrate is provided. The substrate is an aluminum alloy. The metal-matrix composite coating is formed on the substrate through laser deposition using filler materials comprising aluminum, silicon and graphite. The particles forming the metal-matrix composite coating are formed in-situ from the filler materials. A metal-matrix composite coating obtained by the laser deposition process with in-situ formation of particles is also provided.

Process for formation of composite coatings and composite coatings formed thereby. A process for formation of a metal-matrix composite coating on a surface of a substrate is provided. The substrate is an aluminum alloy. The metal-matrix composite coating is formed on the substrate through laser deposition using filler materials comprising aluminum, silicon and graphite. The particles forming the metal-matrix composite coating are formed in-situ from the filler materials. A metal-matrix composite coating obtained by the laser deposition process with in-situ formation of particles is also provided.

A system is disclosed for depositing material on a component. The system includes a deposition device operatively coupled to a fiber optic Nd:YAG laser. The deposition device includes a focusing prism that focuses the Nd:YAG laser at a focal area on a bladed disk, where the focal area on the bladed disk is between two blades of the disk. The system further includes an imaging means that views the focal area of the component. The imaging means and the fiber optic Nd:YAG laser each are positioned in a substantially similar optical relationship to the focal area on the bladed disk The system further includes an additive material delivery means that delivers additive material to the component at the focal area on the component.

The disclosed invention includes articles having advantageous ceramic layers with a ceramic/metal intermediate layer that diminishes towards a pure metal core. Such articles have substantial use in unconventional, harsh environments.

A metal-ceramic article and method for creating the same is disclosed in which the article has undergone machining to remove outer surface volume. The intermediate layer of the article includes a gradient of a metal and metal-ceramic that diminishes toward a metal core.

A flexible self-adaptive composite carbon brush-type electromagnetic composite field synchronous laser cladding device, comprising an electromagnetic field synchronous coupling module that processes a part to be processed, a mechanical arm that drives the electromagnetic field synchronous coupling module to move, and a laser that generates laser; the electromagnetic field synchronous coupling module comprises a laser head, an electric field portion and a magnetic field portion; the magnetic field portion comprises two magnetic field generating modules, and the electric field portion comprises two electric field generating modules, the magnetic field portion and the electric field portion both being fixedly erected at the periphery of the laser head by means of a supporting structure. This invention adopts four sets of coil parts arranged in the annular circumference, and continuous adjustment of the magnetic field size can be realized with the external magnetic field power supply, and the size meets the use requirement; the design of the pointed part of the iron core head improves the magnetic field intensity and linearity of the processing surface. The supporting structure ensures simultaneous follow-up coupling of the electric and magnetic fields.

A flexible self-adaptive composite carbon brush-type electromagnetic composite field synchronous laser cladding device, comprising an electromagnetic field synchronous coupling module that processes a part to be processed, a mechanical arm that drives the electromagnetic field synchronous coupling module to move, and a laser that generates laser; the electromagnetic field synchronous coupling module comprises a laser head, an electric field portion and a magnetic field portion; the magnetic field portion comprises two magnetic field generating modules, and the electric field portion comprises two electric field generating modules, the magnetic field portion and the electric field portion both being fixedly erected at the periphery of the laser head by means of a supporting structure. This invention adopts four sets of coil parts arranged in the annular circumference, and continuous adjustment of the magnetic field size can be realized with the external magnetic field power supply, and the size meets the use requirement; the design of the pointed part of the iron core head improves the magnetic field intensity and linearity of the processing surface. The supporting structure ensures simultaneous follow-up coupling of the electric and magnetic fields.