Abstract: A method for manufacturing an aluminum nitride particle includes the steps of wet-milling an aluminum nitride material to form a solution containing aluminum nitride powders; blending a binding agent and a dispersing agent with the solution to gain a slurry; and granulating the slurry to obtain the aluminum nitride particle.

Abstract: A method for producing a phosphor includes: providing a blend composed of: (i) a magnesium source; (ii) a silicon source; (iii) an aluminum source; (iv) an oxygen source; (v) a solid nitrogen source; (vi) an ammonium halide; and (vii) an activator ion source; coating the blend with an initiator to obtain a tablet; placing the tablet in a heat insulator; placing a ceramic powder between the tablet and the heat insulator; and heating the tablet to obtain a magnesium-alpha-SiAlON-hosted phosphor.

Abstract: A method for preparing an ester is provided. The method includes steps of mixing an acid and an alcohol in a reactive distillation column to generate a first gas mixture; transporting the first gas mixture out of the reactive distillation column; cooling down the first gas mixture for a phase separation to obtain a first liquid mixture in an upper phase; transporting the first liquid mixture back to the reactive distillation column; obtaining a second liquid mixture at a middle section of the reactive distillation column; transporting the second liquid mixture to a separative distillation column; and obtaining the ester at a bottom section of the separative distillation column.

Abstract: A method and an apparatus for preparing aluminum nitride are disclosed. The method includes the steps of (a) providing an aluminum container, (b) providing a reactant to be received in the aluminum container, and proceeding at least one step selected from a group consisting of step (b1), step (b2) and a combination thereof, (c) placing the aluminum container into a reactor with a specific pressure and introducing nitrogen gas into the reactor, and (d) heating the reactant at a specific temperature till igniting, thereby preparing the aluminum nitride. The step (b1) is placing a layer of an aluminum nitride powder between the reactant and the aluminum container, and the step (b2) is perpendicularly placing at least one aluminum pipe into the reactant.

Abstract: A surface treatment method for aluminum nitride includes the steps of:

Abstract: A reactor includes a cylindrical chamber having an opening transverse to an axial direction of the cylindrical chamber, a cover movable along the axial direction between an open state in which the cover is away from the opening of the cylindrical chamber, and a closed state in which the cover seals the opening of the cylindrical chamber, and an actuator unit connected to said cover. An apparatus for producing aluminum nitride including the reactor is also disclosed.

Abstract: This invention provides a method for production of AlN powder. An Al powder was poured into a refractory container having an opening end. If the packing density of the Al powder was less than 0.8 g/cm3, the container containing the Al powder was placed in a reaction chamber filled with nitrogen. If the packing density was larger than 0.8 g/cm3, porous aluminum tubes were placed vertically in Al powder or an initiator was placed on top of the Al powder or both were taken. The container was then placed in the reaction chamber filled with nitrogen. A nitrogen stream was allowed to flow through the Al powder from the bottom to the top and the combustion synthesis reaction was ignited by heating the top surface of the reactant powder.

Abstract: A method and an apparatus for preparing aluminum nitride are disclosed. The method includes the steps of (a) providing an aluminum container, (b) providing a reactant to be received in the aluminum container, and proceeding at least one step selected from a group consisting of step (b1), step (b2) and a combination thereof, (c) placing the aluminum container into a reactor with a specific pressure and introducing nitrogen gas into the reactor, and (d) heating the reactant at a specific temperature till igniting, thereby preparing the aluminum nitride. The step (b1) is placing a layer of an aluminum nitride powder between the reactant and the aluminum container, and the step (b2) is perpendicularly placing at least one aluminum pipe into the reactant.

Abstract: This invention concerns a method for production of AlN powder. The reactants discovered in the invention are aluminum powder and a compound which contains NHx (e.g. NH2, NH3, NH4, N2H4, and N2H6 etc.) or halogens and which can be thermally decomposed or vaporized below the melting point of Al (660° C.). These two reactants are mixed at an appropriate ratio and then pressed into a compact with an appropriate shape. These two reactants, after being mixed at an appropriate ratio, may also be placed in a refractory container which has an opening at one end or has porous walls. In preparing the reactant compact or the reactant mixture, a dilutant such as AlN powder may also be added and mixed with the two reactants. This reactant compact or reactant mixture is then placed in a reaction chamber which is filled with nitrogen. By heating the reactant compact or the reactant mixture, the combustion synthesis reaction is ignited and AlN powder is produced.

Abstract: A method for manufacturing a dense and functionally gradient composite material is provided. The method includes steps of preparing a reactant compact made of composite materials, igniting the reactant compact so that a combustion wave is propagating on the reactant compact, and compressing the reactant compact while the temperature profile of the reactant compact is gradient to obtain the dense and functionally gradient composite material.

Abstract: A method for preparing aluminium nitride includes a first step in which a mixture is formed of aluminium powder and ammonium halide powder. The mixture is then molded into a tablet, which is ignited in an airtight chamber containing nitrogen gas. Aluminium nitride is formed of the tablet through the combustion reaction of the tablet. The gas generated in the decomposition of the ammonium halide forms a number of channels in the tablet so as to enable nitrogen gas to enter the tablet to react with aluminium. The synthesis of aluminium nitride of high purity under low pressure is possible in view of the catalytic effect of the ammonium halide.

Abstract: A method of manufacturing a powdery AlN comprising steps of: a) providing an airtight vessel, b) preparing a powdery Al and a solid-state nitride, c) wrapping up the powdery Al and the solid-state nitride with an igniting agent, d) putting the wrapped Al and nitride into the vessel, e) evacuating the airtight vessel and filling therein with an N gas, and f) igniting the igniting agent. Since the powdery Al and solid-state nitride are completely wrapped up with an igniting agent, the reaction can be more rapidly and fully completed under a relatively low pressure. In addition, the present method can be used to obtain an AlN having a high purity.