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8105078 |
Heat treatment jig for semiconductor silicon substrates and method for manufacturing the same
A heat treatment jig for semiconductor silicon substrates is configured such that a cristobalitized oxide film is formed in a region where the cristobalitized oxide film is in contact with a...
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8048365 |
Crucibles for melting titanium alloys
Crucibles for melting titanium alloys having a facecoat including at least one facecoat layer containing an oxide selected from scandium oxide, yttrium oxide, hafnium oxide, a lanthanide series...
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8007712 |
Reinforced refractory crucibles for melting titanium alloys
Reinforced crucibles for melting titanium alloys having a facecoat including at least one facecoat layer, a backing including at least one backing layer, and at least one reinforcing element...
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7790101 |
Articles for use with highly reactive alloys
Articles for use with highly reactive alloys that include a graphite crucible having an interior, and at least a first protective layer applied to the interior of the graphite crucible in which the...
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7761969 |
Methods for making refractory crucibles
Methods for making refractory crucibles capable of managing thermal stresses and suitable for melting highly reactive alloys, the method involving providing a crucible having at least a facecoat...
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7686887 |
Quartz glass crucible for pulling up silicon single crystal and method for producing the same
An object of the invention is to provide a quartz glass crucible reduced in the generation of vibration occurring on the surface of a silicon melt and free from the generation of rough surface and...
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7582133 |
Methods for reducing carbon contamination when melting highly reactive alloys
Methods for reducing carbon contamination when melting highly reactive alloys involving providing a graphite crucible having an interior, applying at least a first protective layer to the interior...
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7204955 |
Casting ladle
A casting ladle has a body (2) with a base (3) and walls (4, 6, 8) made of a laminated composite ceramic material that includes multiple layers of a woven fiber reinforcing fabric embedded in a...
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7195479 |
Hot liner insertion/removal fixture
A fixture (30) adapted to permit the heated exchange of a liner (14) from an operating vertical furnace (10). The fixture is adapted to secure to the base of the liner (14) to both unlock and lower...
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7147910 |
Pyrolytic boron nitride crucible and method
A method of forming a pyrolytic boron nitride (PBN) article and an article having layers of PBN separated by layers of PBN having a dopant of sufficient concentration to induce peeling, the steps...
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7118789 |
Silica glass crucible
A silica glass crucible is manufactured by introducing into a rotating crucible mold bulk silica grain to form a bulky wall including a bottom wall and a side wall. After heating the interior of...
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6841210 |
Multilayer structured quartz glass crucible and method for producing the same
Disclosed is a multilayer structured quartz glass crucible, for pulling up silicon single crystal, whose structure has at least three layers comprising: a translucent outer layer made of naturally...
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6755911 |
Crucible made of carbon fiber-reinforced carbon composite material for single crystal pulling apparatus
A crucible 1 made of a C/C composite material for use in single crystal pulling, the crucible 1 having a lateral cylindrical portion 11 and a bottom portion 12 integrally formed as multiple layers...
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6604941 |
Refractory crucibles and molds for containing reactive molten metals and salts
Refractory ceramics and composite materials consisting of nitrides, mixed nitrides and oxides, and oxynitrides of Group IV metals Hf, Zr, Ti, and Group III metals Sc, Y, and lanthanides La through...
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6533993 |
Variable height liner system
A melting liner for an induction melting furnace includes an integral foot portion for locating a lip portion of the melting liner in a convenient position for pouring molten metal.
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6422861 |
Quartz fusion furnace and method for forming quartz articles
A crucible for melting a silica for fusion of said silica into a desired shape. The crucible having a main body with inner and outer surfaces comprised of a refractory material. In addition, the...
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6136092 |
Quart crucible with large diameter for pulling single crystal and method of producing the same
A crucible with 22 inches or more in inner diameter, which has a small deformation of the body under exposure to abundant heat radiation during pulling a single crystal, and which has no practical...
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6120286 |
Vaporizer boat for metal vaporizing
The invention concerns a resistance-heated vaporizer boat for vaporizing metal. According to the invention, a reduced temperature is generated in the edge region, i.e., along the longitudinal edge...
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6057030 |
Porous ceramic body and kiln furniture made from a porous ceramic body
A porous ceramic body having a ceramic framework is produced having a surface roughness of about 40 microns or less. The ceramic body has a plurality of pores where each pore is interconnected with...
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5989021 |
Quartz crucible with large diameter for pulling single crystal and method of producing the same
A large diameter quartz crucible with an inner diameter of 22 inches or more comprises an opaque silica glass outer layer having bubbles of 10 μm to 250 μm in diameter and 5 mm to 20 mm in t...
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5934900 |
Refractory nitride, carbide, ternary oxide, nitride/oxide, oxide/carbide, oxycarbide, and oxynitride materials and articles
Refractory ceramics and composite materials consisting of nitrides, carbides, mixed carbides and oxides, oxycarbides, mixed nitrides and oxides, and oxynitrides of Group IVB metals Hf, Zr, and Ti,...
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5885071 |
Quartz glass crucible for pulling single crystal
In order to reduce concentrations of impurities in an inner layer of a quartz crucible for pulling a silicon single crystal which comprises an outer layer made of quartz glass and an inner layer...
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5882807 |
Jig for heat treatment and process for fabricating the jig
A jig used for heat treatment made from an SiC-coated silicon carbide material, wherein the SiC film is coated by the CVD method on a silicon carbide matrix in which silicon has been impregnated...
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5495550 |
Graphite flash evaporator having at least one intermediate layer and a pyrolytic boron nitride coating
A flash evaporator vaporization vessel for flash evaporating metal under conditions of repeated thermal cycling having a graphite body, an outer layer of pyrolytic boron nitride and an intermediate...
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5493630 |
Pyrolytic boron nitride coated flash evaporator
A resistance heated evaporator includes a body of graphite having a generally rectangular geometry with opposite ends each of which has four sides. A coating of pyrolytic boron nitride covers...
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5447803 |
Method for forming titanium nitride film and vessel coated by same
A titanium nitride film forming method employing an ion-plating method to produce good decorative properties, to a titanium nitride film forming method which can maintain the stability of the color...
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5314599 |
Barrier layer against fluoride diffusion in linings of aluminum reduction cells
A barrier layer for prevention of solid fluorides penetration, e.g. NaF, from the interior of an aluminum production cell holding a fluoride-containing melt into a refractory layer intended to...
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5158750 |
Boron nitride crucible
A boron nitride crucible having a closed end, an open end, an internal surface and an external surface, and wherein at least a portion of the external surface, preferably proximate the open end of...
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5120029 |
Linings for crucible furnaces and transfer vessels and method of applying same
A crucible furnace or molten metal transfer vessel is provided with a composite lining having an outer insulating liner and an inner cast working liner. The insulating liner has a high insulating...
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4971772 |
High-purity lining for an electric low shaft furnace
An inside lining for the reaction chamber of an electric low shaft furnace, particularly for producing high-purity silicon from silicon oxide by carbothermic reduction, is provided which has a...
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4956208 |
Manufacture of a quartz glass vessel for the growth of single crystal semiconductor
A quartz glass crucible adapted for use in a process for pulling a single crystal semiconductor material having an opaque outer substrate of a quartz glass with a relatively high bubble content and...
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4913652 |
Pyrolytic boron nitride crucible and method for producing the same
A pyrolytic boron nitride crucible is provided. The crucible contains at least five wall layers consisting of first and second wall layers. The thickness of each of the first wall layers is 5 to...
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4865682 |
Growth method of an organic compound single crystal and a boat used therefor
In the boat growth method of the IIIb-Vb group compound, the quartz boat is tridymitized on at least the surface thereof so as to prevent wetting of the boat due to the melt of the compound and...
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4823359 |
Furnance having dense refractory oxide liner
A refractory product is shown in the form of a dense sintered alumina-chromia, zirconia-alumina-silica, zirconia-alumina body, or zirconia-chromia-alumina having less than about 8% of homogeneously...
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4775565 |
Vessel for refractory use having multi-layered wall
The inventive vessel, e.g. crucible, made of a refractory inorganic material such as boron nitride has a multi-layered wall structure which is an integral alternate lamination of layers of higher...
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4747774 |
Conforming crucible/susceptor system for silicon crystal growth
A crucible/susceptor system is described in which the walls of the crucible and the susceptor cavity are sloped outward in an angle sufficient for the force of gravity to exceed the inward pulling...
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4734031 |
Vessel for holding high temperature bulk materials
A vessel for holding high temperature bulk materials, such as a ladle for handling molten metal, includes a steel bucket containing a permanent outer layer of refractory material. Within the outer...
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4668481 |
Apparatus for manufacturing a compound-semiconductor single crystal by the liquid encapsulated czochralski (LEC) process
A compound-semiconductor single-crystal-manufacturing apparatus comprises a crucible for holding a molten raw material of GaAs and a liquid capsule element of B2 O3, a crucible holder, a heat...
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4654068 |
Apparatus and method for ablating liquefaction of materials
Converting thermally meltable materials to a liquefied state is carried out on a lining of pulverulent material. As liquefied material is drained from the surface, additional unmelted material is...
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4613306 |
Evaporator crucible for vacuum depositing systems
Evaporator crucible for vacuum depositing systems, having a crucible bottom with at least one bottom opening for the introduction of material in rod form for evaporation. At a distance from the...
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4608473 |
Modified zirconia induction furnace
A high temperature induction furnace (10) for drawing lightguide fiber (52) from a silica preform (44) has an axially located tubular zirconium dioxide susceptor (34) therein. Prior to use, at...
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4564379 |
Method for ablating liquefaction of materials
Converting thermally meltable materials to a liquefied state is carried out on a lining of pulverulent material. As liquefied material is drained from the surface, additional unmelted material is...
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4545798 |
Ablating liquefaction employing plasma
Converting thermally meltable materials to a liquefied state is carried out by a plasma heat source encircled by a layer of the unmelted material. As liquefied material is drained from the surface,...
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4528939 |
Electrically conductive containment vessel for molten aluminum
The present invention is directed to a containment vessel which is particularly useful in melting aluminum. The vessel of the present invention is a multilayered vessel characterized by being...
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4529428 |
Method and apparatus for feeding an ablation liquefaction process
In a method and apparatus for melting pulverulent material such as glass batch wherein liquefaction takes place on a stable layer of pulverulent material, adjustable means are provided for feeding...
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4528163 |
Crucible for semiconductor manufacturing purposes and a process for manufacturing the crucible
A crucible for semiconductor technology purposes, especially for the production of silicon crystals, comprising an outer layer portion or layer of silicon dioxide, especially an outer made from...
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4521238 |
Method and apparatus for controlling an ablation liquefaction process
Process control method and apparatus for an ablation liquefaction chamber including primary and secondary burners positioned to direct a primary combustion flame for electively heating portions of...
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4521235 |
Method and apparatus for controlling wall layer thickness in a liquefaction process
In a process for liquefying glass batch and the like, wherein a layer of batch is maintained as a lining in the liquefaction vessel, the thickness of the lining is monitored by measuring the...
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4515755 |
Apparatus for producing a silicon single crystal from a silicon melt
An apparatus for producing silicon single crystal from melted silicon by the pull-up process using a seed crystal, wherein at least a portion of a device in contact with the melted silicon includes...
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4496387 |
Transition between batch preheating and liquefying stages apparatus
A rotary batch preheating kiln feeding batch materials to a batch liquefying vessel is separated from the liquefying vessel by a transition section including duct means to direct exhaust gas from...
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