18 results about "Nitride" patented technology

The invention provides an aluminum and aluminum alloy matrix aluminum nitride reinforced gradient composite surface layer. In the surface layer, aluminum and an aluminum alloy matrix are melted by nitrogen arc with a simple process to ensure that Al and N elements in a melting bath to perform nitridation reaction, namely Al reacts with N to generate AlN, so as to obtain the 'AlN reinforced gradient composite surface layer'. Compared with a thin surface nitridated (AlN) layer prepared by reactive sputtering, chemical vapor deposition, ion injection, plasma nitridation and other methods, the surface layer has large thickness (0.13-0.3mm), has the microstructural characteristic of surface gradient composites, and has remarkably improved microhardness and abrasion resistance compared with the aluminum and the aluminum alloy matrix.

Disclosed is a polarized light emitting diode (LED) capable of emitting polarized light in the front direction thereof by forming a first grating layer on a quantum well layer and forming a second grating layer on a substrate. The polarized LED includes a nitride thin film formed on a substrate, a quantum well layer formed on the nitride thin film, a first grating layer formed on the quantum well layer to allow a part of light generated from the quantum well layer to pass through the first grating layer and to reflect remaining light, and a second grating layer formed on the substrate to rotate the light reflected from the first grating layer such that the reflected light passes through the first grating layer.

The present invention relates to formulations comprising aluminum nitride nanoparticles, at least one dispersant and at least one aqueous solvent, to the method for obtaining said formulations as well as to their use for obtaining a leveling barrier layer.

The invention relates to an aluminum alloy surface treating technology and particularly relates to an aluminum alloy surface titanium dioxide conversion coating solution and a using method thereof. The aluminum alloy surface titanium dioxide conversion coating solution is an aqueous solution which contains titanium salt and fluoride, and the pH value of the aqueous solution is regulated to 3.5-4.5 by using non-reducing acid. After being pretreated, the surface of aluminum alloy is soaked into the aluminum alloy surface titanium dioxide conversion coating solution for 1-15min, thus a conversion coating is formed on the surface of the aluminum alloy. According to the invention, the chemical conversion treatment is carried out by using titanium salt instead of chromic acid, the surface of the aluminum alloy is etched by using low-concentration fluorine ions, and titanyl sulfate or titanyl nitride is induced to hydrolyze to generate a titanium dioxide conversion coating on the surface of the aluminum alloy, wherein the titanium dioxide conversion coating is uniform in color and luster and excellent in corrosion resistance. The titanium salt is nonpoisonous, the conversion solution is simple in component, no great number of energy is consumed, and no environment hazards are caused, therefore, a clean production process is achieved.

Embodiments disclosed herein relate to a TFT and methods for manufacture thereof. Specifically, the embodiments herein relate to methods for forming a semiconductor layer at a low temperature for use in a TFT. The semiconductor layer may be formed by depositing a nitride or oxynitride layer, such as zinc nitride or oxynitride, and then converting the nitride layer into an oxynitride layer with a different oxygen content. The oxynitride layer is formed by exposing the deposited nitride layer to a wet atmosphere at a temperature between about 85 degrees Celsius and about 150 degrees Celsius. The exposure temperature is lower than the typical deposition temperature used for forming the oxynitride layer directly or annealing, which may be performed at temperatures of about 400 degrees Celsius.

The invention discloses an abrasive-containing emulsifying compound metal cutting solution. The cutting solution is characterized by being prepared from the following raw materials in parts by weight: 3-5 parts of aluminum hydroxide powder, 1-2 parts of hydroquinone, 2-4 parts of aluminum nitride, 4-6 parts of nano medical stone powder, 1-2 parts of stannous chloride, 2-3 parts of sodium metasilicate pentahydrate, 5-6 parts of sodium dibutyl naphthalene sulfonate, 1.5-2.5 parts of propylene glycol alginate, 2-4 parts of alpha-sulfomonocarboxylate, 5-7 parts of aid and 200 parts of deionized water. The added abrasive such as the nano medical stone is matched with a surfactant, so that the cutting solution disclosed by the invention has good dispersibility and abrasion resistance and has the effects of sterilization and deodorization; the abrasion resistance, dispersibility, lubricity and film-forming property are strengthened by adding the aid; the aid is matched with the surfactant, so that the cutting solution has excellent lubricity, abrasion resistance and cleaning and cooling property; the cutting solution disclosed by the invention, which is in the shape of water-based emulsion, is excellent in performance, simple and feasible in processing technology and low in cost.

The invention discloses high heat input welding resistant building steel and a production method thereof, and belongs to the technical field of steel production. The steel for the building comprises the following chemical components in percentage by mass: 0.05 to 0.18 percent of C, 0.05 to 0.75 percent of Si, 0.65 to 1.75 percent of Mn, 0.003 to 0.02 percent of P, 0.001 to 0.015 percent of S, 0.005 to 0.075 percent of Al, 0.01 to 0.05 percent of Nb, 0.01 to 0.07 percent of V, 0.005 to 0.04 percent of Ti, 0.001 to 0.01 percent of Mg + Ca, 0.002 to 0.01 percent of O, 0.005 to 0.015 percent of N and the balance of Fe and residual elements, the contents of V, Ti and N also meet the relational expression: 1.06 [Ti] < 3.64 [N] < [V] + 1.06 [Ti]. Precipitated particles formed by nitrides of titanium, niobium and vanadium and oxides of magnesium and calcium play roles in pinning austenite grains and promoting ferrite nucleation; and by adjusting alloy components and a smelting process, the number and form of various nitrides and oxides are reasonably and effectively controlled, coarse structures generated in the welding heat cycle process are eliminated, and the welding performance of the building steel is improved.

A method for fabricating semiconductor device includes providing a substrate having a first device region and a second device region. Floating gate structure is formed in the first device region. Liner layer and nitride layer are sequentially deposited over the first device region and the second device region. The floating gate structure is conformally covered. Etching back process is performed on the nitride layer to reduce thickness of the nitride layer. The first device region is still covered by the nitride layer. A photomask layer is formed over the substrate with an opening region to expose the second device region for cleaning. The photomask layer is removed. A gate oxide layer grows on the substrate in the second device region. Anisotropic etching process is performed to remove the nitride layer, resulting in a nitride spacer on a lower portion of a sidewall of the floating gate structure.

A memory device includes a substrate and a first dielectric layer formed over the substrate. At least two charge storage elements are formed over the first dielectric layer. The substrate and the first dielectric layer include a shallow trench filled with an oxide material. The oxide material formed in a center portion of the shallow trench is removed to provide a region with a substantially rectangular cross-section.

Methods and structures for improving alignment contrast for patterning a metal layer generally includes depositing a metal layer having a plurality of grains, wherein grain boundaries between the grains forms grooves at a surface of the metal layer. The metal layer is subjected to surface treatment to form an oxide or a nitride layer and fill the surface grooves. The metal layer can be patterned using alignment marks in the metal layer and/or underlying layers. Filling the grooves with the oxide or nitride increases alignment contrast relative to patterning the metal layer without the surface treating.

The invention relates to a method for preparing carbonitride-silicide solid solution composite ceramic at a low temperature by a reaction hot pressing sintering technology, and belongs to the field of multiphase ceramic materials. The invention aims to solve the technical problems of poor sinterability and high-temperature performance of the existing multiphase ceramic. The method comprises the following steps: 1, mixing carbide powder, carbonitride powder and silicon powder, and carrying out ball milling to obtain composite powder; and 2, sintering the composite powder obtained in the step 1 to obtain the carbonitride-silicide solid solution composite ceramic. Fourth subgroup carbides and carbonitride capable of generating solid-phase exchange are selected, the solid-phase reaction and the solid-solution coupling synergistic process of original powder in the sintering process are fully utilized, an anion-cation dual solid solution or split-phase solid solution can be formed, and compared with a traditional means, the sintering temperature can be reduced by 300-500 DEG C. And the relatively low sintering temperature ensures that the material prepared by the method has a fine average grain size, and the strength and the hardness of the material are remarkably improved.

The invention discloses a stainless steel separation piece and a preparation method thereof. A carbon-nitride-carbide composite plating layer is plated on the surface of stainless steel. The plating layer at least contains the components of carbon, ferrochromium nitride, iron carbides and chromium carbides. In presence of catalyst precursors, gas-state carbon hydrogen compounds and catalyst accelerators, the composite plating layer is prepared through CVD reaction under specific conditions. The composite plating layer of the stainless steel separation piece is compact, rigid, stable in qualityand excellent in matchability with the stainless steel, and resists high temperature; in high-temperature hot pressing molding, molded parts are not bonded, in particular diamond saw blades are not bonded, so that the diamond saw blades are high in molding quality; and the stainless steel separation piece can be continuously recycled to achieve long service life. The preparation method is cheap and easy-obtained in raw materials, low in energy consumption, short in needed time and simple, and realizes low cost of CVD plating layers.

A method of producing an endless metal ring includes welding ends of a maraging steel plate such that the maraging steel plate has a ring shape, annealing the maraging steel plate with the ring shape in a furnace at 845° C. or higher, and nitriding the annealed maraging steel plate, wherein, during the annealing, a dew point temperature indicating an amount of water in the furnace is adjusted such that a value of the dew point temperature [° C.] is equal to or higher than a value obtained by subtracting 35 from time [min] at an annealing temperature of 845° C. or higher.