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Scientific American ; Jan. 2 edition, 1909
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| Number | Title | Issue Date |
| 7360488 | Single phase tungsten alloy A single phase metal alloy usually for forming a shaped charge liner for a penetrating jet or explosively formed penetrator forming warhead consists essentially of from a trace to 90%, by weight, of cobalt, from 10% to 50% by weight, of tungsten, and the balance nic... | 04/22/2008 |
| 7232473 | Composite material containing tungsten and bronze High-density composite materials comprising tungsten and bronze are useful as lead replacements in the production of ammunition, weights and other high density articles. The composition of the composite, articles manufactured using the composite, and a process for m... | 06/19/2007 |
| 7226492 | High-powder tungsten-based sintered alloy Tungsten-based alloy material sintered at a high sintering power that may contain additive elements soluble in the nickel and selected from the group constituted, for example, by rhenium, molybdenum, tantalum, niobium, vanadium or a mixture of these, wherein, after ... | 06/05/2007 |
| 7175803 | X-ray tube and method of manufacture The present invention is directed to methods of manufacturing an x-ray tube component, such as an evacuated housing and the like. The component has a radiation shielding layer, which is comprised of a plurality of powder metals, at least one of which is comprised of... | 02/13/2007 |
| 7059233 | Tungsten-containing articles and methods for forming the same Tungsten-containing articles and manufacturing processes for tungsten-containing articles. The articles may include firearms projectiles, such as shot, shot slugs, bullets, big game bullets, lead-equivalent bullets, black powder bullets, etc.; radiation shields; and... | 06/13/2006 |
| 6960319 | Tungsten alloys for penetrator application and method of making the same Disclosed is a flow-softening tungsten alloy having the general formula: W100-pAiBjCkDe wherein W is tungsten; A is one or more elements selected from the ... | 11/01/2005 |
| 6914032 | Method of producing tungsten-copper based composite powder and sintered alloys for heat-sink using said composite powder The present invention relates to a method of producing W—Cu based composite powder, which is used in heat-sink materials for high-power integrated circuits, electric contact materials, etc, and to a method of producing a W—Cu based sintered alloy by using the co... | 07/05/2005 |
| 6890480 | Ductile medium- and high-density, non-toxic shot and other articles and method for producing the same Medium- and high-density articles are formed from melting and casting alloys containing tungsten, iron, nickel and optionally manganese and/or steel. In some embodiments, the articles have densities in the range of 8-10.5 g/cm3, and in other embodiments, ... | 05/10/2005 |
| 6830637 | Large diameter tungsten-lanthana rod A large-diameter tungsten-lanthana rod having an elongated grain structure substantially parallel to the longitudinal axis of the rod is described. The large diameter rod is produced by rolling at a temperature greater than 1400° C. and less than 1700° C. to achie... | 12/14/2004 |
| 6823798 | Tungsten-containing articles and methods for forming the same Manufacturing processes for articles that are formed from compositions of matter that include powders containing tungsten and at least one binder, as well as articles formed thereby. In some embodiments, the processes include compacting the mixture of powders under ... | 11/30/2004 |
| 6815066 | Composite material containing tungsten, tin and organic additive A composite material for use as a lead replacement, comprising a high density metal such as tungsten (W), a lower density metal such as tin (Sn) and an organic additive is disclosed. Also disclosed are processes for forming such composites. The composite is particul... | 11/09/2004 |
| 6796162 | Method and tool of tungsten/heavy metal alloy for hot-forging solid state copper and copper alloys The tungsten/heavy metal alloy is suitable for tools such as extrusion dies and extrusion mandrels for the hot-forming of copper and copper alloys. The novel alloy consists of 80 to 89.9% by weight of tungsten, 2 to 7% by weight of chromium, and a remainder of binde... | 09/28/2004 |
| 6746782 | Diffusion barrier coatings, and related articles and processes A barrier coating is disclosed, containing about 15 atom % to about 95 atom % chromium; and about 5 atom % to about 60 atom % of at least one of rhenium, tungsten, and ruthenium. Nickel, cobalt, iron, and aluminum may also be present. The barrier coating can be disp... | 06/08/2004 |
| 6562207 | Refractory metal silicide alloy sputter targets, use and manufacture thereof Sputter target, method of manufacture of same and sputter coating process using the target as a sputtering source are disclosed. The sputter target comprises an Me/Si multi-phase, consolidated blend wherein the Si component is present in a very small amou... | 05/13/2003 |
| 6527880 | Ductile medium-and high-density, non-toxic shot and other articles and method for producing the same Medium- and high-density articles are formed from melting and casting alloys containing tungsten, iron, nickel and optionally manganese and/or steel. In some embodiments, the articles have densities in the range of 8-10.5 g/cm3, and in other em... | 03/04/2003 |
| 6447715 | Methods for producing medium-density articles from high-density tungsten alloys Methods for producing medium-density articles from recovered high-density tungsten alloy (WHA) material, and especially from recovered WHA scrap. In one embodiment of the invention, the method includes forming a medium-density alloy from WHA material and ... | 09/10/2002 |
| 6270549 | Ductile, high-density, non-toxic shot and other articles and method for producing same Ductile, high-density, non-toxic W--Ni--Mn--Fe alloy compositions and methods of manufacture by which they may be converted to shot (for use in shotshells) and other useful products traditionally made of lead alloys are presented. Product of the present i... | 08/07/2001 |
| 6200694 | Mo-W material for formation of wiring, Mo-W target and method for production thereof, and Mo-W wiring thin film A Mo--W material for the formation of wirings is discloses which, as viewed integrally, comprises 20 to 95% of tungsten and the balance of molybdenum and inevitable impurities by atomic percentage. The Mo--W material for wirings is a product obtained by c... | 03/13/2001 |
| 6190466 | Non-sag tungsten wire The invention relates to non-sag tungsten wire for being used in light sources or heating elements, which tungsten wire is prepared from a tungsten block by powder metallurgy process with thermomechanical technique, and has an overlapped crystal structure... | 02/20/2001 |
| 6090227 | Structural units for glass melts made from a molybdenum/tungsten alloy Structural units which come into contact with glass melts and ceramic melts are exposed to strong corrosive attack. Molybdenum is a known material for glass melt electrodes but it is not usable for the majority of highly corrosive glass and ceramic melts.... | 07/18/2000 |
| 6045601 | Non-magnetic, high density alloy A high density, non-magnetic alloy is described along with a process for manufacturing it. The preferred composition for the alloy is approximately 95% by weight of tungsten and 5% of austenitic stainless steel. The process for manufacturing the alloy beg... | 04/04/2000 |
| 5919321 | Target material of metal silicide A novel metal silicide target material is provided which can effectively restrict the occurrence of fine particles. The target material has a structure comprising metal silicide and free silicon, which material has a relative density more than 100% which ... | 07/06/1999 |
| 5916363 | Oriented molybdenum or tungsten single crystal and manufacturing method thereof Secondary recrystallized grains having a plurality of crystal orientations in a polycrystalline compact of molybdenum or tungsten, which contains at least one element selected from the group consisting of calcium and magnesium in amount of 0.007 to 0.090 ... | 06/29/1999 |
| 5896553 | Single phase tungsten-titanium sputter targets and method of producing same A single phase W-Ti sputter target and a method of manufacturing the target are disclosed. The target is produced by mixing powders of tungsten and titanium and subjecting the mixed powders to a pressing operation for a time, temperature and pressure suff... | 04/20/1999 |
| 5889220 | Copper-tungsten alloys and their manufacturing methods Copper-tungsten alloys used for materials of electrode, electric contacts, package materials for semiconductors, heat sink and their manufacturing methods. The copper-tungsten alloy contains preferably 5 to 30 wt. % of copper, 0.002 to 0.04 wt. % of phosp... | 03/30/1999 |
| 5863492 | Ternary heavy alloy based on tungsten-nickel-manganese A high density, high strength and high compressive strain tungsten heavy alloy consists essentially of tungsten in the amount of approximately 90% by weight, and the rest Mn and Ni in an amount sufficient to cause sintering at between 1100° and 1400° C.... | 01/26/1999 |
| 5831188 | Composite shots and methods of making Methods of making high specific gravity shotgun shot and small arms projectiles from melts containing primarily tungsten and iron, and particularly including specific melting temperature depressants and using specific quenching both compositions are descr... | 11/03/1998 |
| 5821441 | Tough and corrosion-resistant tungsten based sintered alloy and method of preparing the same A tungsten based sintered alloy has excellent corrosion resistance under high temperatures and high humidities, and has good toughness. The alloy can be employed as such without requiring further corrosion protection such as Ni plating, due to its corrosi... | 10/13/1998 |
| 5760317 | Flow softening tungsten based composites Disclosed is a flow-softening tungsten alloy having the general formula: W100-p Tx My Bz wherein W is tungsten; T is one or more elements selected from the group sisting of titanium, zirconium and hafnium; M is one or mo... | 06/02/1998 |
| 5738948 | Electrode-wiring material and electrode-wiring substrate using the same The present invention discloses an electrode wiring material including at least one main element selected from the group consisting of Mo and W and an additional element selected from the group consisting of Kr and Xe in an amount of 0.0003 atomic % to 3 ... | 04/14/1998 |
| 5740516 | Firearm bolt A firearm bolt prepared from an alloy of tungsten, nickel and iron having a density of about from 14.1 g/cc to 18.0 g/cc. The alloy preferably also contains at least one of molybdenum, cobalt, rhenium, tantalum and gold. The alloy is preferably manufactur... | 04/14/1998 |
| 5512240 | Tungsten electrode material An arc discharge electrode material used for various electrode materials for arc welding, which is excellent in arc ignitability and consumability. The composition is 0.02 to 1.0 wt % lanthanum boride and the rest of tungsten.... | 04/30/1996 |
| 5403375 | Fine-particle metal powders This invention relates to fine-particle powders of the metals Fe, Co, Ni, W and/or Mo which have a defined particle size of 1.0 nm to less than 1 00 nm. Less than 1% of the individual particles of the powder deviate by more than 40% from the average parti... | 04/04/1995 |
| 5306364 | High toughness tungsten based heavy alloy containing La and Ca. manufacturing thereof A tungsten based heavy alloy having a W--Ni--Fe based composition containing traces of lanthanum or calcium, thereby capable of exhibiting high toughness, irrespective of the content of impurities such as phosphorous and sulfur contained therein, the cool... | 04/26/1994 |
| 5306569 | Titanium-tungsten target material and manufacturing method thereof A titanium-tungsten target material capable of limiting the amount of particles generated during sputtering and a method of manufacturing this titanium-tungsten material. The titanium-tungsten target material has a titanium-tungsten alloy phase which occu... | 04/26/1994 |
| 5294269 | Repeated sintering of tungsten based heavy alloys for improved impact toughness A method for heat-treatment of tungsten based alloys, capable of improving impact toughness while keeping tensile strength and elongation. The method comprises maintaining a sintered tungsten based alloy consisting of 86 to 99 weight % tungsten and the ba... | 03/15/1994 |
| 5261941 | High strength and density tungsten-uranium alloys Alloys of tungsten and uranium and a method for making the alloys. The amount of tungsten present in the alloys is from about 55 vol % to about 85 vol %. A porous preform is made by sintering consolidated tungsten powder. The preform is impregnated with m... | 11/16/1993 |
| 5234487 | Method of producing tungsten-titanium sputter targets and targets produced thereby Tungsten-titanium sputter targets of at least 95% theoretical density are provided with little or no ଲ(Ti, W) phase constituent. Such targets will minimize troublesome particulate emissions during sputter coating conditions.... | 08/10/1993 |
| 5217818 | Substrate material for magnetic head and magnetic head using same A substrate material for a magnetic head, which comprises an oxide composed mainly of WO3 and has a thermal expansion coefficient of 100 to 130×10-7 /° C., and a magnetic head using the substrate material.... | 06/08/1993 |
| 5087299 | Vibration-proof tungsten wire A vibration-proof tungsten wire which forms, in cases where the diameter of the wire is D mm and when an electric current corresponding to 90% of the fusion current value is passed therethrough for 5 minutes, a wire having a crystal grain boundary at which bub... | 02/11/1992 |
