Abstract:
A liner is placed into a crucible to prevent semiconductor material from contacting the interior surfaces of the crucible and to allow the crucible to be reused in the making of semiconductor ingots.
Abstract:
The present invention relates to an apparatus and method for purifying silicon using directional solidification. The apparatus can be used more than once for the directional solidification of silicon without failure. The apparatus and method of the present invention can be used to make silicon crystals for use in solar cells.
Abstract:
The invention relates to a crucible for melting and crystallizing a metal, a semiconductor material, or a metal alloy, wherein a crucible wall of a crucible base body is made at least partially of a crucible material comprising silicon nitride and silicon dioxide at a weight ratio of between about 1:10 and about 1:1 (Si3N4 : SiO2). The invention further relates to a component for a crucible base body of a crucible for melting and crystallizing a metal, a semiconductor material, or a metal alloy, wherein a component segment is made at least partially of a crucible material comprising silicon nitride and silicon dioxide at a weight ratio of between about 1:10 and about 1:1 (Si3N4 : SiO2), and to a method for producing a component for a crucible base of a crucible for melting and crystallizing a metal, a semiconductor material, or a metal alloy, wherein a component segment is formed at least partially of a crucible material comprising silicon nitride and silicon dioxide at a weight ratio of between about 1:10 and about 1:1 (Si3N4 : SiO2).
Abstract:
The invention relates to a crucible for melting and crystallizing a metal, a semiconductor material, or a metal alloy, wherein a crucible wall of a crucible base body is made at least partially of a crucible material comprising silicon nitride and silicon dioxide at a weight ratio of between about 1:10 and about 1:1 (Si3N4 : SiO2). The invention further relates to a component for a crucible base body of a crucible for melting and crystallizing a metal, a semiconductor material, or a metal alloy, wherein a component segment is made at least partially of a crucible material comprising silicon nitride and silicon dioxide at a weight ratio of between about 1:10 and about 1:1 (Si3N4 : SiO2), and to a method for producing a component for a crucible base of a crucible for melting and crystallizing a metal, a semiconductor material, or a metal alloy, wherein a component segment is formed at least partially of a crucible material comprising silicon nitride and silicon dioxide at a weight ratio of between about 1:10 and about 1:1 (Si3N4 : SiO2).
Abstract translation:本发明涉及的坩埚以熔化和结晶金属,半导体材料或金属合金,其中,坩埚基体的坩埚中至少部分地由一个坩埚材料的其中氮化硅和二氧化硅在约1:10至约1之间的重量比:1(氮化硅: 二氧化硅)包含的内容。 此外,本发明涉及一种用于熔化坩埚的坩埚基体的成分和结晶金属,半导体材料或金属合金,其中的组成部分至少部分地由一个坩埚材料的其中氮化硅和二氧化硅在约1:10和之间的重量比 约1:1(氮化硅为:SiO2)包含,以及一种用于制造组件,其用于熔融的坩埚的坩埚基体和结晶金属,半导体材料或金属合金,其中一部件部分是至少部分地形成从坩埚材料的氮化硅的方法和 二氧化硅的重量比为约1:10至约1:1(Si 3 N 4:SiO 2)。
Abstract:
A method of sealing a surface and structure of a refractory crucible with a ceramic, comprising the steps of: (a) heating a refractory crucible to a predetermined temperature; (b) applying a wetting agent to a surface of the crucible; (c) applying a ceramic slip along the inner surface of the crucible; (d) applying a vacuum to an outer surface of the crucible; (e) removing excess slip from the inner surface of the crucible; (f) heating the crucible to remove moisture therefrom; and (g) firing the crucible at a temperature between 1.300°C and about 1.700°C.
Abstract:
The product of a molten alkali metal metalate phase separation can be processed into a purified metal from a metal source. Metal sources include native ores, recycled metal, metal alloys, impure metal stock, recycle materials, etc. The method uses a molten alkali metal metalate as a process medium or solvent in purifying or extracting high value metal or metal oxides from metal sources. Vitrification methods using the silicate glass separation phase can be prepared as is or can be prepared with a particulate phase distributed throughout the silica glass phase and encapsulated and fixed within the continuous glass phase. Tungsten metal can be obtained from an alkali metal rungstate. A typically finely divided tungsten metal powder can be obtained from a variety of tungsten sources including recycled tungsten scrap, tungsten carbide scrap, low grade tungsten ore typically comprising tungsten oxide or other form of tungsten in a variety of oxidation states.
Abstract:
The invention relates to equipment for refining a load of silicon(s) that comprises a crucible (5) including at least one sole (20) made of a first refractory material having good heat conductivity, means (26, 28) for cooling the sole, a protection member (30) made of at least a second refractory material having low heat conductivity and to be provided between the crucible and the load, and induction heating means (23, 24) of the load including a winding (23) provided in or under the sole.
Abstract:
L'invention concerne un creuset monobloc (10) pour la fusion d'un produit non ferreux, du type comportant un fond (12) délimité par une surface interne sensiblement plane (16) du creuset entourée par une surface interne courbe (18) muni de moyens de marquage (20) matérialisant la base d'une zone imaginaire de remplissage (22) du produit à l'état solide dans le creuset, dans lequel les moyens de marquage (20, 20') séparent la surface plane (16) en une première partie (24) centrale et une seconde partie (26) périphérique. L'invention concerne également un procédé de remplissage d'un creuset pour la fusion d'un produit non ferreux, au cours duquel on dispose le produit à l'état solide dans une zone imaginaire (22) de remplissage du creuset. On utilise des moyens de marquage (20) pour matérialiser une base de la zone imaginaire de remplissage du produit à l'état solide dans le creuset, et l'on dispose le produit en fonction de ces moyens de marquage de telle sorte que le produit puisse se dilater lors de la fusion du produit non ferreux sans entrer en contact avec la surface interne courbe du creuset.
Abstract:
The thermit welding device (1) of the present invention comprises: a tubular thermit welding crucible (3) having a bottom portion provided with a through portion (6) to an exterior, and having a glass layer or metal layer formed on an inner tubular surface; and a body portion comprising a cavity portion (10) forming a welding portion, and a passageway (9, 11) communicating with said through portion (6) at one opening portion and communicating with said cavity portion (10) at another opening portion.