US3496425A - Art of forming powder compacts of uniform interconnected porosity - Google Patents

Art of forming powder compacts of uniform interconnected porosity Download PDF

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Publication number
US3496425A
US3496425A US707813A US3496425DA US3496425A US 3496425 A US3496425 A US 3496425A US 707813 A US707813 A US 707813A US 3496425D A US3496425D A US 3496425DA US 3496425 A US3496425 A US 3496425A
Authority
US
United States
Prior art keywords
powder
die
tantalum
container
particles
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US707813A
Other languages
English (en)
Inventor
Milton E Kirkpatrick
Ralph A Mendelson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Northrop Grumman Space and Mission Systems Corp
Original Assignee
TRW Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by TRW Inc filed Critical TRW Inc
Application granted granted Critical
Publication of US3496425A publication Critical patent/US3496425A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
    • H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/004—Details
    • H01G9/04—Electrodes or formation of dielectric layers thereon
    • H01G9/048—Electrodes or formation of dielectric layers thereon characterised by their structure
    • H01G9/052—Sintered electrodes
    • 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
    • B22F3/02—Compacting 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
    • B22F3/02—Compacting only
    • B22F3/04—Compacting only by applying fluid pressure, e.g. by cold isostatic pressing [CIP]
    • 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
    • B22F3/10—Sintering only
    • B22F3/11—Making porous workpieces or articles
    • B22F3/1103—Making porous workpieces or articles with particular physical characteristics
    • 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
    • B22F3/12—Both compacting and sintering
    • B22F3/1208—Containers or coating used therefor
    • 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
    • B22F3/12—Both compacting and sintering
    • B22F3/14—Both compacting and sintering simultaneously
    • B22F3/15—Hot isostatic pressing
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/04—Making non-ferrous alloys by powder metallurgy
    • C22C1/045—Alloys based on refractory metals

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Power Engineering (AREA)
  • Materials Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Powder Metallurgy (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
US707813A 1968-02-23 1968-02-23 Art of forming powder compacts of uniform interconnected porosity Expired - Lifetime US3496425A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US70781368A 1968-02-23 1968-02-23

Publications (1)

Publication Number Publication Date
US3496425A true US3496425A (en) 1970-02-17

Family

ID=24843258

Family Applications (1)

Application Number Title Priority Date Filing Date
US707813A Expired - Lifetime US3496425A (en) 1968-02-23 1968-02-23 Art of forming powder compacts of uniform interconnected porosity

Country Status (4)

Country Link
US (1) US3496425A (fr)
DE (1) DE1906255B1 (fr)
FR (1) FR2002433A1 (fr)
GB (1) GB1266013A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4059442A (en) * 1976-08-09 1977-11-22 Sprague Electric Company Method for making a porous tantalum pellet
US4126451A (en) * 1977-03-30 1978-11-21 Airco, Inc. Manufacture of plates by powder-metallurgy

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50106844A (fr) * 1974-01-31 1975-08-22
CA1222152A (fr) * 1982-09-20 1987-05-26 Walter J. Rozmus Methode et dispositif thermiques d'agglomeration de materiaux
IL164017A0 (en) * 2004-09-09 2005-12-18 Cerel Ceramic Technologies Ltd Solid electrolyte capacitor with controlled properties and method for manufacturing the same

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2299228A (en) * 1938-01-12 1942-10-20 Radio Patents Corp Electric condenser
US2406345A (en) * 1942-04-15 1946-08-27 Joseph B Brennan Electrode and method of making same
US3004332A (en) * 1958-09-02 1961-10-17 Bell Telephone Labor Inc Powder metallurgy process
US3166693A (en) * 1965-01-19 Form an oxide
US3302073A (en) * 1963-10-21 1967-01-31 Gen Electric Electrical capacitors and electrode material therefor
US3330999A (en) * 1964-01-31 1967-07-11 Int Standard Electric Corp Electrolytic capacitor with dielectric film formed on ceramic material

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE693504C (de) * 1935-06-27 1940-07-11 Gen Motors Corp Vorrichtung zum Formen keramischer Koerper, bei der fein gepulverter keramischer Stoff in die Hoehlung eines Formblockes eingefuellt wird

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3166693A (en) * 1965-01-19 Form an oxide
US2299228A (en) * 1938-01-12 1942-10-20 Radio Patents Corp Electric condenser
US2406345A (en) * 1942-04-15 1946-08-27 Joseph B Brennan Electrode and method of making same
US3004332A (en) * 1958-09-02 1961-10-17 Bell Telephone Labor Inc Powder metallurgy process
US3302073A (en) * 1963-10-21 1967-01-31 Gen Electric Electrical capacitors and electrode material therefor
US3330999A (en) * 1964-01-31 1967-07-11 Int Standard Electric Corp Electrolytic capacitor with dielectric film formed on ceramic material

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4059442A (en) * 1976-08-09 1977-11-22 Sprague Electric Company Method for making a porous tantalum pellet
US4126451A (en) * 1977-03-30 1978-11-21 Airco, Inc. Manufacture of plates by powder-metallurgy

Also Published As

Publication number Publication date
GB1266013A (fr) 1972-03-08
DE1906255B1 (de) 1971-06-24
FR2002433A1 (fr) 1969-10-17

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