| Patent Number |
Title Of Patent |
Date Issued |
| 5813543 |
Method of sorting pieces of material |
September 29, 1998 |
| A method of sequentially sorting pieces of material in real-time into output bins where each piece has a composition defined by a plurality of control elements. Each piece is analyzed to determine the concentrations of each control element in the piece. The output bins are assigned targe |
| 5516595 |
Production of ceramic and ceramic-metal composite articles with surface coatings |
May 14, 1996 |
| The invention comprises a method of making self-supporting ceramic and ceramic composite structures by the oxidation reaction of a body of molten parent metal precursor with a vapor-phase oxidant to form an oxidation reaction product. This reaction or growth is continued to form a thick, |
| 5409580 |
Process and apparatus for melting metals and composites while reducing losses due to oxidation |
April 25, 1995 |
| A process and apparatus for melting metals that react rapidly with air at elevated temperatures to form a stable metal oxide and/or that contains a metal oxide prior to being exposed to elevated temperature, while reducing metal losses due to oxidation or the presence of the oxides. The |
| 5401694 |
Production of metal carbide articles |
March 28, 1995 |
| A method for manufacture of Group IVB metal carbide comprising a carbide of a metal selected from the group consisting of titanium, hafnium and zirconium ceramic composites is provided wherein a permeable mass of filler and carbon is contacted with a molten Group IVB metal. The molten |
| 5254509 |
Production of metal carbide articles |
October 19, 1993 |
| A method for manufacture of Group IVB metal carbide comprising a carbide of a metal selected from the group consisting of titanium, hafnium and zirconium ceramic composites is provided wherein a permeable mass of filler and carbon is contacted with a molten Group IVB metal. The molten |
| 5082807 |
Production of metal carbide articles |
January 21, 1992 |
| A method for manufacture of Group IVB metal carbide ceramic composites is provided wherein a permeable mass of filler and carbon is contacted with a molten Group IVB metal. The molten metal is maintained in contact with the permeable mass for a sufficient period to infiltrate the permeab |
| 5064788 |
Production of ceramic and ceramic-metal composite articles with surface coatings |
November 12, 1991 |
| The invention comprises a method of making self-supporting ceramic and ceramic composite structures by the oxidation reaction of a body of molten parent metal precursor with a vapor-phase oxidant to form an oxidation reaction product. This reaction or growth is continued to form a thick, |
| 4981632 |
Production of ceramic and ceramic-metal composite articles incorporating filler materials |
January 1, 1991 |
| A method of producing a composite comprising a self-supporting polycrystalline material obtained by oxidation reaction of a molten parent metal with a vapor-phase oxidant comprising infiltrating a filler exhibiting inter-particle pore volume with a parent metal under conditions which |
| 4948764 |
Production of ceramic and ceramic-metal composite articles with surface coatings |
August 14, 1990 |
| The invention comprises a method of making self-supporting ceramic and ceramic composite structures by the oxidation reaction of a body of molten parent metal precursor with a vapor-phase oxidant to form an oxidation reaction product. This reaction or growth is continued to form a thick, |
| 4891338 |
Production of metal carbide articles |
January 2, 1990 |
| A method for manufacture of Group IVB metal carbide ceramic composites is provided wherein a permeable mass of filler and carbon is contacted with a molten Group IVB metal. The molten metal is maintained in contact with the permeable mass for a sufficient period to infiltrate the permeab |
| 4820461 |
Production of ceramic articles incorporating porous filler material |
April 11, 1989 |
| Production of composite ceramic articles using a porous bed or preform of filler material with a molten metal in the presence of a vapor phase oxident, for effecting infiltrating growth of a polycrystalline matrix of a metal-oxidant reaction product into the filler bed or preform, wherei |
| 4790873 |
Removing inclusions from molten metal |
December 13, 1988 |
| The invention provides a method of removing inclusions from molten metal, particularly aluminum, by(a) contacting the molten metal with a medium which retains metal-non-wettable inclusions. The medium may be liquid such as a fused salt mixture; or solid such as a filter or metal-non-wett |
| 4737254 |
Linings for aluminium reduction cells |
April 12, 1988 |
| A lining to support the liquid contents of an aluminium electrolytic reduction cell includes an upper layer which is penetrated by electrolyte during operation of the cell, consisting essentially of unbonded alumina, including a substantially close-packed array of alumina shapes, the gap |
| 4737253 |
Aluminium reduction cell |
April 12, 1988 |
| In an aluminium reduction cell including a cell lining and embedded therein at least one cathode current collector including a high temperature section comprising an electrically conducting refractory material such as titanium diboride, generally in conjunction with molten aluminium meta |
| 4726842 |
Metallic materials re-inforced by a continuous network of a ceramic phase |
February 23, 1988 |
| A cermet material comprises an intergrown network of a minor proportion of ceramic such as TiB.sub.2 in a metal matrix such as Al. The cermet is prepared by forming a minor proportion by weight of a ceramic phase in situ in a molten metal phase and holding the mixture of elevated tem |
| 4613418 |
Aluminium reduction cells |
September 23, 1986 |
| An aluminium reduction cell includes a potlining 16, which may be of alumina, with cathode current collectors 24, 32 embedded therein. The cell floor has an array of depressions 22 with at least one collector at the bottom of each depression. The depressions are filled with metal-wettabl |
| 4612103 |
Aluminium reduction cells |
September 16, 1986 |
| An aluminium reduction cell includes an anode 10, electrolyte 12, a cathode 14, a potlining 16 which may be of alumina and cathode current collectors embedded therein. The collectors include a section comprising a major proportion by volume of bodies 22, e.g. of titanium diboride or a |
| 4599320 |
Refractory lining material for electrolytic reduction cell for aluminum production and method of |
July 8, 1986 |
| A method of making a refractory material, e.g. suitable for use in lining Al electrolytic cells, comprises passing molten Al containing suspended particles of a transition metal diboride (e.g. TiB.sub.2) through a refractory filter, on and in which the particles are deposited. The filter |
| 4551218 |
Electrolytic reduction cells |
November 5, 1985 |
| In an electrolytic reduction cell in which molten metal is produced by electrolysis of a molten electrolyte, less dense than the molten metal product, the molten product metal collects at the bottom of the cell. A filter is provided at this location and is constructed from a material |
| 4500643 |
Shaped refractory metal boride articles and method of making them |
February 19, 1985 |
| A shaped refractory article of titanium diboride or other metal has a microstructure with a weight average grain diameter of from 0.5 to 5 microns and substantially no grains larger than 10 microns diameter, from 10% to 45% by volume being made up of interconnected pores the majority |
| 4495047 |
Electrolytic reduction cells |
January 22, 1985 |
| In an electrolytic reduction cell for the production of a molten metal by electrolysis of a molten electrolyte, the product metal collects on a cathodic carbon floor having embedded steel current collector bars for leading out the cathodic current. In order to reduce the wave motion of |
| 4443313 |
Electrolytic reduction cells |
April 17, 1984 |
| In an electrolytic reduction cell for the production of molten metal, particularly aluminium, by electrolysis of a less dense salt monolayer of ceramic shapes is located on the floor of the cell. Such shapes are formed of a ceramic material, wettable by molten aluminium, but not wettable |
| 4405415 |
Electrolytic refining of molten metal |
September 20, 1983 |
| In a process for refining Al or Mg a stream of relatively impure molten metal is passed along one face of a grille separator having interstices of the order of 0.1-1 cm in width. The interstices are filled with a molten salt electrolyte adapted to transport ions of the selected metal (Al |
