US3335002A - Manufacture of alloy foils - Google Patents

Manufacture of alloy foils Download PDF

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Publication number
US3335002A
US3335002A US495655A US49565565A US3335002A US 3335002 A US3335002 A US 3335002A US 495655 A US495655 A US 495655A US 49565565 A US49565565 A US 49565565A US 3335002 A US3335002 A US 3335002A
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United States
Prior art keywords
coating
particles
carrier
strip
coatings
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Expired - Lifetime
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US495655A
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English (en)
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John F Clarke
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Texas Instruments Inc
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Texas Instruments Inc
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Application filed by Texas Instruments Inc filed Critical Texas Instruments Inc
Priority to US495655A priority Critical patent/US3335002A/en
Priority to GB43384/66A priority patent/GB1153932A/en
Priority to DE19661533037 priority patent/DE1533037B1/de
Application granted granted Critical
Publication of US3335002A publication Critical patent/US3335002A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C24/00—Coating starting from inorganic powder
    • C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
    • C23C24/082—Coating starting from inorganic powder by application of heat or pressure and heat without intermediate formation of a liquid in the layer
    • C23C24/085—Coating with metallic material, i.e. metals or metal alloys, optionally comprising hard particles, e.g. oxides, carbides or nitrides
    • C23C24/087—Coating with metal alloys or metal elements only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/18—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces by using pressure rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F5/006—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of flat products, e.g. sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/04—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating by means of a rolling mill
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
    • B23K35/0222—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in soldering, brazing
    • B23K35/0244—Powders, particles or spheres; Preforms made therefrom
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/24—Selection of soldering or welding materials proper
    • B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
    • B23K35/3033—Ni as the principal constituent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
    • B22F2998/10—Processes characterised by the sequence of their steps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
    • B23K35/0222—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in soldering, brazing
    • B23K35/0233—Sheets, foils

Definitions

  • the viscosity of the slurry is made such that when applied to the supporting strip it will evenly cling thereto in any posture of the strip.
  • the strip is resistance-heated to dry the slurry thereon. Then the dried slurry is compressed sufficiently on the strip to green-bond the particles of the alloyable powders to one another but without embrittling alloying.
  • the dried, green-bonded and compressed slurry which at this time remains sufficiently flexible, is peeled from the strip. It is then sintered by heating a second time to a temperature high enough to drive off the binder and by diffusion and grain growth to improve the green bonds, but not high enough to effect embrittling alloying of the metal particles. Then the sintered strip is rolled for compaction to final gauge. The strip is then again sintered at a temperature high enough to homogenize by diffusion all of the constituent particles to form the desired alloy which may be brittle but no longer a problem since no more processing steps are required.
  • FIG. 1 is a diagrammatic view, parts being broken away, illustrating apparatus and steps for manufacturing metal strip or foil in accordance with the invention.
  • FIG. 2 is a view illustrating diagrammatically modifications of certain materials which occur as they pass through the process.
  • foil refers to thin sheetmetal alloy, the thickness being a few thousandths of an inch, usually about 0.001" to 0.008 or so.
  • Powder means a finely divided substance. The average particle size is less than 50 microns with substantially no particles exceeding 100 microns in size. The exact size of the par- "ice ticles depends on the hardness of the metals involved, and the shape of the powder particles.
  • slurry means a liquid medium of substantial viscosity containing metal particles suspended in a binder.
  • binder means long-chain, high-molecular-weight organic compounds or the like characterized in that their constituents when comminuted are stringy and when mixed with a liquid such as water swell and act according to the invention to hold or bind the metal particles in suspension and to produce adequate viscosity in the slurry for adherence to a smooth surface. Thus the slurry will adhere evenly to metal surfaces contacted by it.
  • suitable binders are methyl cellulose, nonionic cellulose ether, polyethylene oxide, polyvinyl pyrrolidone et cetera. The intended use of the foil will determine the particular gauge to which it is manufactured.
  • the drawings are illustrative and not to scale because of the small dimensions involved.
  • the process for manufacturing foil according to the invention comprises coating a flexible preferably metal carrier strip with a slurry containing particles or powders of several different metals suspended in a binder, solidifying the slurry by heating to dry it, compacting and sintering it at a relatively low temperature to greenbond particles, and then compacting and sintering it a second time at a relatively high temperature to alloy the metals.
  • the slurry includes a mixture of a longchain high-molecular-weight organic compound acting as a binder, a carrier such as water, and powders of the constituent metals to make the desired alloy.
  • the powders of each of the various elemental metals of the alloy are supplied to the slurry in the proportion desired in the resulting alloy.
  • the particles by mixing are evenly suspended by the binder.
  • the amount of the binder used controls the viscosity of the slurry so that when applied to a metal surface it will cling thereto. For example, its viscosity may be from 1000 to 4000 cps.
  • the percentage of solids therein may be 50% to The objects of this is that when evenly applied, the slurry will remain substantially even in any position of the metal surface. In some but not all cases a conventional wetting agent such as an aerosol may be used to advantage in the slurry.
  • a flexible metal carrier strip 1 is unwound from a reel 3 and fed to a roller coater generally designated 5 for receiving a coating of the slurry. Ultimately the carrier strip 1 is rewound on a reel 6.
  • the carrier strip is preferably composed of a hard metal, such as cold-rolled stainless steel, but if desired may be made of other appropriate material. It may be in the range of from .005" to .050" or so thick.
  • the roller coater 5 comprises a reservoir 7 which receives slurry 9 after it has been thoroughly mixed.
  • the coater has two passages 11 and 13 through which the slurry is delivered to an upper trough 15 and a lower trough 17, respectively.
  • Roller 19 is at one side of trough 15 and is spaced from a metering roller 23 at the other side of the trough. The gap between rollers 19 and 23 determines the amount of slurry carried by the roller 19 to the top side of carrier 1.
  • roller 21 is above trough 17 and the distance it is spaced from metering roller 25 beneath the trough determines the amount of slurry carried by roller 21 to the underside of the carrier 1.
  • the upper and lower surfaces 1A, 1B (FIG. 2) of the carrier become uniformly coated with layers of slurry 9 from the troughs 15 and 17.
  • the wet slurry coatings applied to carrier 1 are indicated at 29 and 31 in FIG. 2.
  • the coatings are substantially the same thickness but may be different.
  • the coatings are held on the carrier at this time by the binder which adheres to the surfaces 1A and 1B (FIG. 2) of the carrier. Coating thickness may be .010, for example, when wet.
  • the coatings 29, 31 are dried on the carrier.
  • the dried coatings are designated 30, 32.
  • the means illustrated in the drawings for drying the wet coatings 29 and 31 comprise resistance heating of the strip 1 by connecting a source of electric current 33 to the strip 1 through conductors 35, 37, including brushes, as indicated at 8 and 10.
  • the electrical resistance strip 1 results in heat being conducted to the wet coatings 29 and 31 which as they move forward reach the dry condition 30 and 32. While the thickness of coatings 29 and 31 may vary, a dried thickness at 30 and 32 of about 0.005 or 0.006" for each coating has been found satisfactory for producing a final foil thickness of about .0015 to 0.002".
  • Strip 1 with the dried coatings 30 and 32 thereon is then passed between rolls 39, 41 of a conventional roller mill.
  • Rolls 39, 41 compact the coatings 30 and 32, thereby reducing their thickness and increasing their density in the aggregate, as indicated at 34 and 36.
  • these rolls 39, 41 effect a reduction in the dry coating thickness in the range of from to 50% or more.
  • a thickness of about .0025" to 0.003" may be obtained from an original thickness of about 0.006", which is satisfactory.
  • the dry coatings and 32 are compacted in the rolling mill an amount sufficient to elfect sufficient green bonding in the solid phase between adjacent particles of metal in the coating, thereby providing a sufficiently cohesive metallic structure to be handled in the remainder of the process.
  • the particles do not green-bond to the strip 1 because of the particle size, shape and hardness. It will be understood that bonding of the particles to the strip is inhibited by the following characteristics: softness of the particles in relation to the strip, certain particle shapes such as flat or acicular, and small particle size. It will be understood that the pressure required for the requisite reduction of the dried slurry is preferably not such as to reduce the thickness of the backing strip 1.
  • the coatings 30 and 32 when dried and compacted by reduction as at 34 and 36, are peeled from strip 1.
  • the carrier strip 1 is then wound on reel 6 and, since the coating has not bonded to the carrier strip during compaction by the rolling mill, the carrier strip can be reused with little or no cleaning or other work being performed on it. Stripping of the compacted dried coatings 34 and 36 from the carrier strip 1 is facilitated by guide rollers 4 and a naturally occurring curling phenomena sometimes called alligatoring. This is the tendency of two sheets being rolled to curl away from one another at the roll exit.
  • the dry coating 34 tends to curl up as viewed in FIG. 1 while the dry coating 36 tends to curl down, thus facilitating drawing away of the coatings from the carrier strip.
  • Next coating 34 is sintered in a furnace 43 and the coating layer 36 is sintered in a furnace designated 45, being guided by rollers 4.
  • Furnaces 43 and 45 may be conventional heating furnaces for sintering and may be provided with inert protective or reducing atmospheres such as argon, hydrogen or the like, depending upon the nature of the metal constituting the starting powdered metal.
  • Coatings 34 and 36 are sintered at a temperature which is sufficient to remove by vaporization most, if not all, dried binder in the coating, and by diffusion and grain growth effecting improvement of the solid-phase green bonds between metal particles of at least one of the metal powder elements in the coating.
  • the sintering temperature is low enough to prevent any substantial homogenization or alloying between particles of different elements in the coatings. Any substantial diffusion of unlike particles of metal in the layers to homogenize and alloy such particles at this time is avoided, since it would cause embrittlement of the coatings 34 and 36 and make it difficult further to process.
  • the coatings at this stage are designated 38 and 40
  • the coating 38 which at this time is not brittle, is compacted to the desired final gauge of the strip or foil by passing the coating between two squeeze rolls 47 and 49 of a conventional rolling mill.
  • the coating 40 is compacted to final gauge by a pair of squeeze rolls 51 and 53.
  • the density of the coatings is somewhat increased as a result of this second compaction.
  • Another purpose is smoothing and final sizing. In this case reduction may be 5% to 40% or so.
  • the compacted coatings are designated 42 and 44. The coatings may be rolled at this time without difiiculty since they are still ductile.
  • the coatings 42 and 44 are rolled to final gauge, they are heated in furnaces 55 and 57 at a temperature higher than thetemperature in the furnaces 43 and 45.
  • the temperature in furnaces 55 and 57 is sufiicient to homogenize all of the constituent particles to form the desired alloy. This occurs by substantially complete diffusion between all like and unlike particles of constituent metals in the coatings.
  • the finished strips or foils of metal or metal alloys are designated 46, 48 and they may be rolled into coils as shown at 59 and 61.
  • the resulting strips 46, 48 are very dense and substantially pore-free. The final alloying may cause embrittlement of the foil, but this is not detrimental since manufacture of the foil is complete.
  • a slurry for a nickel-based brazing alloy was prepared containing by weight 4.5% silicon powder, 3.5% boron powder and 92% nickel powder. These ratios are equivalent to those in the known AMS 4778 brazing alloy.
  • the elemental metal powders were mixed with a polyethylene oxide binder and water as a solvent.
  • the nickel used was a carbonyl nickel (INCO type 255 or the equivalent) which, being fine i.e. 2 to 14 microns in average particle size, is easily sintered at low temperatures over a short period of time. This also favors later stripping away from carrier 1.
  • the slurry was thoroughly mixed and placed in reservoir 7 of reverse roller coating apparatus 5. Thus a thin coating of the slurry (about .010”) was applied to each surface of a hard, cold-rolled stainless steel carrier.
  • the coatings were dried on the carrier by resistance heating of the carrier (as shown at 30, 32). The dried thickness was about .005". The dried coating was then rolled down to about .0025" to compact the coatings (as illustrated at 34, 36 in FIG. 2 of the drawings). This effected initial green bonding between the particles themselves. Due to the small average size of the metal particles, there was no bonding between the metal particles and the carrier. Compaction of the coatings was accomplished without the rolls 39, 41 touching strip 1 and without reduction in its thickness.
  • the green-bonded compacted coatings were peeled off the carrier strip as they left the rolling mill and then passed through the first sintering furnaces such as shown at 43 and 45.
  • the green-bonded compacts were sintered in furnaces 43, 45 at a temperature of about 1400 F. for about 30 seconds to one minute, which was sufficient- 1y high to cause densification of the foil or coating layer and a substantial increase in the nickel-to-nickel bonds in the coatings. Some shrinking occurred to .002". This is illustrated in FIG. 2 of the drawings, where the portion of the coatings designated 38, 40 diagrammatically illustrates nickel particles bonded together as a matrix with the Si and B particles held therein.
  • Brazing foils are normally used at thicknesses in that range.
  • the product was resintered in furnaces such as 55 and 57 for 30 seconds to one minute at a higher temperature of about 1600 F. to homogenize and alloy by diffusion of the three different metals in the coating and by grain growth to bring about alloying.
  • the times consumed in the furnaces are variable, depending upon temperature and the metals that are being sintered. Thirty seconds to a minute is generally satisfactory.
  • strip or foil manufactured by my process is almost 100% metal, the binder and solvent having been vaporized and removed by heating during drying of the coatings and/ or by heating in the sintering furnaces.
  • Another brazing alloy that may be made according to the invention is one constituted by nickel, silicon and chromium particles, the chromium being substituted for the boron in the above-described process.
  • the weight ratio of nickel to silicon to chromium is 71:10:19.
  • Temperatures used in the process in this case are like those above given, except that homogenization takes place at about 1700 F-lSOO" F., the temperature employed for brazing being about 2150 F.
  • powders that may be used are iron and aluminum, with iron in the range of 80% to 90% by weight, and aluminum to by weight.
  • the sintering temperature is on the order of 900 F. or less, and the alloying temperature about 1,000 F. or more.
  • powders that may be used are copper and titanium powders in a 90% to 10% weight ratio, employing temperatures of 500 F. to 600 F. for sintering and about 1,000 F. or more for alloying.
  • Another example comprises the use of nickel and titanium.
  • the weight of nickel powder would be in the range of 70% to 75%, and the titanium to In this case the sintering temperature is about 950 F. or less, and the allowing temperature about 1,000 F.
  • the use of the wetting agent in the slurry is not always required. Thus it is not required when polyethylene oxide, nonionic cellulose ether or polyvinyl pyrrolidone are used as the long-chain, highmolecular-weight organic compound to form the slurry. Also, while in the example the coatings 29 and 31 are applied to strip 1 by roller coating, they could be applied by passing the strip up through a tank, by brushing or by other suitable means for applying a uniform coating on the carrier strip.
  • a coating to a supporting carrier, said coating containing a binding compound and a combination of particles of at least two different metals,
  • nickel, silicon and boron with nickel in excess at first and second temperatures of about 1400 F. and about 1600 F. to 1700 F.;
  • nickel, silicon and chromium with nickel in excess, at first and second temperatures of about 1400' F. and about 1700 F. to 1800 F.;
  • first and second temperatures of about 900 F. or less and about 1000 F. or more;
  • first and second temperatures of about 500 F. to 600 F. and about 1000 F. or more;
  • nickel and titanium with nickel in excess, at about 950 F. or less and about 1000" F. or more.
  • initial squeezing of the dried layers is effected by rolling the layers while they are on the carrier strip by opposed rolls on opposite sides of the carrier strip, the rolling being at a pressure less than that which will reduce the thickness of the carrier strip or to force the metal particles into the carrier strip.
  • the method of manufacturing thin metal alloy foil comprising:

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  • Mechanical Engineering (AREA)
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  • Manufacturing & Machinery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
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US495655A 1965-10-13 1965-10-13 Manufacture of alloy foils Expired - Lifetime US3335002A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US495655A US3335002A (en) 1965-10-13 1965-10-13 Manufacture of alloy foils
GB43384/66A GB1153932A (en) 1965-10-13 1966-09-28 Manufacture Of Thin Metal Sheets
DE19661533037 DE1533037B1 (de) 1965-10-13 1966-10-06 Verfahren zum pulvermetallurgischen Herstellen von duennen Metallbaendern

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US495655A US3335002A (en) 1965-10-13 1965-10-13 Manufacture of alloy foils

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3403999A (en) * 1965-10-13 1968-10-01 Texas Instruments Inc Manufacture of braze shim stock
US3432295A (en) * 1966-12-08 1969-03-11 Hittman Associates Inc Method for making oriented fiber or whisker composites
US3441409A (en) * 1967-01-26 1969-04-29 Chase Brass & Copper Co Method of producing a corrosion resistant alloy of cu-ni by liquid phase sintering
US3508320A (en) * 1968-04-17 1970-04-28 Mallory & Co Inc P R Electrical contact materials and method of making same
US3839026A (en) * 1966-11-18 1974-10-01 British Steel Corp PROCESS FOR THE PRODUCTION OF METAL STRIP FROM Fe POWDER
US3980445A (en) * 1974-07-03 1976-09-14 Vasily Alexeevich Aleshin Method of making filtering metal material
US4491559A (en) * 1979-12-31 1985-01-01 Kennametal Inc. Flowable composition adapted for sintering and method of making
US4617054A (en) * 1984-08-10 1986-10-14 Mixalloy Limited Production of metal strip
EP0677355A1 (de) * 1994-04-13 1995-10-18 PLANSEE Aktiengesellschaft Hartlot
EP0767028A1 (de) * 1995-10-04 1997-04-09 Societe Nationale D'etude Et De Construction De Moteurs D'aviation "Snecma" Verfahren zum Verbinden von intermetallischen Material durch Reaktionssinterung und abgeleitete Anwendungen
EP2969852B1 (de) 2013-03-15 2021-04-21 Texene LLC Flexibler behälter mit induktiver steuerung und entsprechendes verfahren

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3808123A1 (de) * 1988-03-11 1988-07-07 Krupp Gmbh Verfahren zur herstellung von sinterteilen aus feinkoernigen metall- oder keramikpulvern

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Publication number Priority date Publication date Assignee Title
US2582744A (en) * 1948-08-03 1952-01-15 Joseph B Brennan Method of making compact metal strip and electrode produced therefrom
US2851354A (en) * 1954-01-13 1958-09-09 Schwarzkopf Dev Co Process of forming sintered sheets having copper infiltrated portions
US2900254A (en) * 1954-10-13 1959-08-18 Sylvania Electric Prod Process of producing sintered metal sheets
GB855203A (en) * 1956-07-25 1960-11-30 Commissariat Energie Atomique Improvements in porous metallic membranes and method of manufacturing them
US3121631A (en) * 1961-09-11 1964-02-18 Comstock Company Method of and apparatus for forming metal strips
US3227591A (en) * 1963-04-26 1966-01-04 Sylvania Electric Prod Film techniques

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DE586621C (de) * 1930-02-20 1933-10-23 Franz Skaupy Dr Verfahren zur Herstellung von Metallkoerpern
US2290338A (en) * 1941-02-28 1942-07-21 Gen Motors Corp Method of manufacture
US3049795A (en) * 1958-05-02 1962-08-21 Emery I Valyi Gas permeable body
GB898932A (en) * 1958-07-30 1962-06-14 Gen Electric Improvements in casting metal powders
US3171817A (en) * 1961-04-27 1965-03-02 Sylvania Electric Prod Suspension for casting a metal containing film

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2582744A (en) * 1948-08-03 1952-01-15 Joseph B Brennan Method of making compact metal strip and electrode produced therefrom
US2851354A (en) * 1954-01-13 1958-09-09 Schwarzkopf Dev Co Process of forming sintered sheets having copper infiltrated portions
US2900254A (en) * 1954-10-13 1959-08-18 Sylvania Electric Prod Process of producing sintered metal sheets
GB855203A (en) * 1956-07-25 1960-11-30 Commissariat Energie Atomique Improvements in porous metallic membranes and method of manufacturing them
US3121631A (en) * 1961-09-11 1964-02-18 Comstock Company Method of and apparatus for forming metal strips
US3227591A (en) * 1963-04-26 1966-01-04 Sylvania Electric Prod Film techniques

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3403999A (en) * 1965-10-13 1968-10-01 Texas Instruments Inc Manufacture of braze shim stock
US3839026A (en) * 1966-11-18 1974-10-01 British Steel Corp PROCESS FOR THE PRODUCTION OF METAL STRIP FROM Fe POWDER
US3432295A (en) * 1966-12-08 1969-03-11 Hittman Associates Inc Method for making oriented fiber or whisker composites
US3441409A (en) * 1967-01-26 1969-04-29 Chase Brass & Copper Co Method of producing a corrosion resistant alloy of cu-ni by liquid phase sintering
US3508320A (en) * 1968-04-17 1970-04-28 Mallory & Co Inc P R Electrical contact materials and method of making same
US3980445A (en) * 1974-07-03 1976-09-14 Vasily Alexeevich Aleshin Method of making filtering metal material
US4491559A (en) * 1979-12-31 1985-01-01 Kennametal Inc. Flowable composition adapted for sintering and method of making
US4617054A (en) * 1984-08-10 1986-10-14 Mixalloy Limited Production of metal strip
EP0677355A1 (de) * 1994-04-13 1995-10-18 PLANSEE Aktiengesellschaft Hartlot
EP0767028A1 (de) * 1995-10-04 1997-04-09 Societe Nationale D'etude Et De Construction De Moteurs D'aviation "Snecma" Verfahren zum Verbinden von intermetallischen Material durch Reaktionssinterung und abgeleitete Anwendungen
FR2739583A1 (fr) * 1995-10-04 1997-04-11 Snecma Procede d'assemblage par frittage reactif de pieces en materiau intermetallique et applications derivees
US5788142A (en) * 1995-10-04 1998-08-04 Societe Nationale D'etude Et De Construction De Moteurs D'aviation "Snecma" Process for joining, coating or repairing parts made of intermetallic material
EP2969852B1 (de) 2013-03-15 2021-04-21 Texene LLC Flexibler behälter mit induktiver steuerung und entsprechendes verfahren

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DE1533037B1 (de) 1970-07-30
GB1153932A (en) 1969-06-04

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