134results about "Molten casting coating" patented technology

The invention discloses a metal three-dimensional printing method and equipment thereof. The metal three-dimensional printing method comprises the following steps that melted and flowable metal or softened and flowable metal is put into a molding area used by three-dimensional printing equipment; after not having the flowability, the melted and flowable metal or the softened and flowable metal is converted into printed and molded metal; the melted and flowable metal or the softened and flowable metal is accumulated based on the printed and molded metal until an object to be printed is molded; the object to be printed is formed by the accumulated printed and molded metal. The key characteristics of the metal three-dimensional printing method disclosed by the invention lie in that during molding, binding force between layers and binding force between pixel points are changed in a manner of resistance radiation, and a printing area for performing resistance radiation can be set; a metal part generated by the metal three-dimensional printing method disclosed by the invention is high in strength, high in density, and high in molding accuracy; molding process of each pixel point is monitored; a dismountable assisting bracket can be synchronously generated; a large-scale part can be printed; the equipment is simple in structure and low in cost. The metal three-dimensional printing method and the equipment thereof disclosed by the invention have a substantive progress.

The present invention relates to a liquid-solid rolling bonding method for heterogeneous metals and an apparatus therefor. The method comprises: pouring a liquid metal onto the surface of a heterogeneous solid base metal coated with a soldering flux; rolling the liquid metal and the solid metal under pressure; solidifying the liquid metal and making it bond to the surface of the solid base metal under rapid cooling to realize metallurgical bonding of the two or more metals. The apparatus comprises an unrolling machine, a soldering flux tank, a drying-heating apparatus, a pouring nozzle, an interior water-cooling rollers and a roll-collecting machine arranged in order, a pouring basket is disposed above the pouring nozzle and a base frame is disposed below the pouring nozzle. The present invention has the advantages of high bonding strength, lower production cost, high production efficiency, good product quality, fewer investment for the apparatus and lower consumption of energy. The method of the present invention can replace the convention rolling bonding method in solid-solid phase and is suitable for the production of various clad metal sheets and strip.

Systems and methods in accordance with embodiments of the invention implement layers of metallic glass-based materials. In one embodiment, a method of fabricating a layer of metallic glass includes: applying a coating layer of liquid phase metallic glass to an object, the coating layer being applied in a sufficient quantity such that the surface tension of the liquid phase metallic glass causes the coating layer to have a smooth surface; where the metallic glass has a critical cooling rate less than 1000 K / s; and cooling the coating layer of liquid phase metallic glass to form a layer of solid phase metallic glass.

A discharging apparatus has a substrate holding part 32 which holds a substrate S; an discharging head 34 which discharges a liquid material onto the substrate S; an ion producing device 38 which provides an ionized wind on the substrate S; an exhaust device 40 which is placed on a direction where the ionized wind from the ionized wind producing device 38 is blowing, and the ionized wind is provided toward the liquid material on the substrate S, at least, immediately after discharging the liquid material onto the substrate S.

C-MEMS architecture having carbon structures with high surface areas due to high aspect ratios and nanoscale surface enhancements, and improved systems and methods for producing such structures are provided. Specifically, high aspect ratio carbon structures are microfabricated by pyrolyzing a patterned carbon precursor polymer. Pyrolysing the polymer preferably comprises a multi-step process in an atmosphere of inert and forming gas at high temperatures that trail the glass transition temperature (Tg) for the polymer. The surface area of the carbon microstructures is increases by nanotexturing the surface through oxygen plasma exposure, and by integrating nanoscale structures with the carbon microstructures by exposing the carbon microstructures and a catalyst to hydrocarbon gas. In a preferred embodiment, the carbon microstructures are the source of carbon gas.

A method of bonding a metal to a substrate involves forming an oxide layer on a surface of the substrate, and in a molten state, over-casting the metal on the substrate surface. The over-casting drives a reaction at an interface between the over-cast metal and the oxide layer to form another oxide. The other oxide binds the metal to the substrate surface upon solidification of the over-cast metal.

A method of bonding a metal to a substrate is disclosed herein. The method involves forming a nano-brush on a surface of the substrate, where the nano-brush includes a plurality of nano-wires extending above the substrate surface. In a molten state, the metal is introduced onto the substrate surface, and the metal surrounds the nano-wires. Upon cooling, the metal surrounding the nano-wires solidifies, and during the solidifying, at least a mechanical interlock is formed between the metal and the substrate.

A turbine engine component (10) with a protective aluminide coating (14) that include additions of silicon and a dopant, such as yttrium and / or hafnium, in an amount effective to reduce sulfidation and a deposition process for forming such aluminide coatings (14). A silicon-containing layer (30) may be applied to the superalloy substrate (12) of the component (10) and the aluminide coating (14) formed by exposing component (10) and layer (30) to a vapor phase reactant containing the dopant. The aluminide coating (14), which contains dopant from the layer (30), may operate as a standalone environmental coating or as a bond coating for an optional ceramic thermal barrier layer (24). An optional zirconia layer (26) maybe provided between the aluminide coating (14) and the ceramic thermal barrier layer (24). Alternatively, the dopant may be included in the silicon-containing layer (30) applied to the component (10) before the aluminide coating (14) is formed and no vapor phase reactant containing the dopant is required.

A local environmental cell for a welding spray gun includes an annular ring having a top surface and a bottom surface, wherein the annular ring is adapted for attachment to an outer perimeter of the spray gun; and a plurality of fluid passageways radially disposed about the annular ring having a plurality of openings in the bottom surface of the ring in fluid communication with a vacuum source for providing a vacuum thereto. The use of the local environmental cell permits deposition of local bond coats as well as minimizes the number of steps associated with welding repair processes. For example, the use of the local environmental cell permits welding and formation of a low oxide bond coat during the welding process, thereby eliminating the need for placing the substrate subsequent to a welding process in a separate spray cell to deposit the bond coating.