5 results about "Titanium aluminium nitride" patented technology

The invention discloses a method for recycling PET-titanium aluminum nitride composite material cutting chips, and belongs to the technical field of solid waste resource recycling. The method sequentially comprises the steps of scrap pretreatment, separation of an organic component PET, high-temperature roasting, acid leaching, precipitation and purification of a titanium component, precipitation and purification of an aluminum component and the like. Through a set of integrated technological process, efficient separation of organic components and inorganic components in the composite material is achieved, and high-value titanium and aluminum elements are subjected to multi-section directional conversion to be prepared into high-purity titanium dioxide and aluminum hydroxide products respectively.

This invention belongs to the field of coating technology, specifically relating to a method for preparing a titanium aluminum nitride coating for hot extrusion dies. The preparation method includes the following steps: (1) heating the die; (2) pre-bombardment; (3) coating deposition: nitrogen gas is introduced into the coating chamber to maintain the total pressure of the mixed gas at 1×10⁻⁶. ‑1 -5×10 ‑1 Pa, the substrate bias voltage of the titanium-aluminum alloy target is 20-30V, and a titanium-aluminum nitride coating with a thickness of 3-4μm is deposited; (4) Quenching: Quenching is performed at a temperature of 700-800℃; (5) Die cooling: The hot extrusion die is first cooled to 400-500℃, held for 30-60min, and then naturally cooled to obtain the titanium-aluminum nitride coating. The titanium-aluminum nitride coating obtained by this invention has an aluminum content of 55-60%, a high temperature resistance of over 900℃, and a hardness of over 3300HV, which improves the service life of the hot extrusion die.

The present invention provides elastic wave devices, filters, and multiplexers capable of improving power handling. [Solution] The elastic wave device comprises a piezoelectric layer 15, a first layer 31 provided on the piezoelectric layer 15 which is a titanium aluminum nitride layer, a chromium aluminum nitride layer, a chromium nitride layer, a diamond-like carbon layer, or a titanium carbide nitride layer, and a second layer 32 provided on the first layer 31 which is a metal layer formed of a metal with a lower electrical resistivity than the first layer 31, and includes a pair of comb-shaped electrodes 22 including electrode fingers 23.

The utility model relates to the technical field of cutters, and discloses a tungsten steel alloy anti-curling cutter which comprises an ergonomic cutter handle, a mounting groove and an anti-curling mechanism, the inner end of the ergonomic cutter handle is provided with the mounting groove, the inner end of the ergonomic cutter handle is provided with the anti-curling mechanism, and the mounting groove is provided with the anti-curling mechanism. A replacement mechanism is movably arranged at the outer end of the ergonomic knife handle; the anti-curling mechanism comprises a cutting edge, a connecting block, a tungsten steel alloy layer, a titanium alloy layer and a titanium aluminum nitride coating, and the cutting edge is arranged on one side of the ergonomic knife handle. According to the tungsten steel alloy anti-curling cutter, by arranging the anti-curling mechanism, the anti-curling effect of the tungsten steel alloy cutter is conveniently improved, the cutter edge body is made of a tungsten steel alloy material, the titanium alloy layers are arranged on the two sides of the tungsten steel alloy layer, the overall deformation resistance is enhanced and curling is prevented through combination of the high-pressure sintering technology, and the titanium nitride aluminum coating can improve the hardness of the cutter edge; the wear resistance and the corrosion resistance are further improved, and the service life of the cutter is prolonged.

The invention provides a PVD (Physical Vapor Deposition) coating with an amorphous metal-nanocrystalline ceramic layered structure and a preparation method of the PVD coating, and belongs to the technical field of metal material surface treatment. The coating comprises at least one amorphous metal layer and at least one nanocrystalline ceramic layer, and the amorphous metal layers and the nanocrystalline ceramic layers are alternately arranged. The amorphous metal layer is made of titanium-aluminum alloy doped with Ta and Si, and the amorphous metal layer is made of titanium-aluminum nitride doped with Ta and Si. According to the preparation method, a PVD coating is obtained by layer-by-layer deposition in a mode of cooperating ion beams with magnetron sputtering. According to the layered alternate coating composed of the amorphous metal layers and the nanocrystalline ceramic layers, the high strength, toughness and corrosion resistance are integrated, the amorphous metal layers in the coating are well combined with the sections of the nanocrystalline ceramic layers, the coating is well combined with a substrate, and the coating is not prone to falling off. The metal sub-layer and the nanocrystalline ceramic layer with high toughness greatly improve the comprehensive mechanical property of the multi-layer coating.