GB1219748A - Producing niobium or tantalum powder - Google Patents

Producing niobium or tantalum powder

Info

Publication number
GB1219748A
GB1219748A GB3006069A GB3006069A GB1219748A GB 1219748 A GB1219748 A GB 1219748A GB 3006069 A GB3006069 A GB 3006069A GB 3006069 A GB3006069 A GB 3006069A GB 1219748 A GB1219748 A GB 1219748A
Authority
GB
United Kingdom
Prior art keywords
powder
ingot
cooling
tantalum powder
cooling fluid
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
Application number
GB3006069A
Inventor
Wilbert Ridd George
Denis William John Hazelden
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB3006069A priority Critical patent/GB1219748A/en
Publication of GB1219748A publication Critical patent/GB1219748A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B22F9/00—Making metallic powder or suspensions thereof

Landscapes

  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

1,219,748. Producing Nb and Ta powder. STANDARD TELEPHONES & CABLES Ltd. June 13, 1969, No.30060/69. Heading C7D. Nb or Ta powder is produced by maintaining an ingot of Nb or Ta in H 2 at 400‹ -500‹ C. for a time sufficient for the solubility peak of H 2 in Nb or Ta to be attained (typically 1 hour) and then cooling at a rate such that there is spontaneous disintegration of the ingot. The ingot may first be deoxidized by heating in H 2 at 1000‹ C. The process may be carried out by radio frequency heating in a crucible through the hollow walls of which a cooling fluid is circulated. Cooling is effected by switching off the power and leaving the cooling fluid flowing. Coarse powder may be re-treated by the method described or may form a starting point for conventional grinding, should finer powder be required.
GB3006069A 1969-06-13 1969-06-13 Producing niobium or tantalum powder Expired GB1219748A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3006069A GB1219748A (en) 1969-06-13 1969-06-13 Producing niobium or tantalum powder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3006069A GB1219748A (en) 1969-06-13 1969-06-13 Producing niobium or tantalum powder

Publications (1)

Publication Number Publication Date
GB1219748A true GB1219748A (en) 1971-01-20

Family

ID=10301610

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3006069A Expired GB1219748A (en) 1969-06-13 1969-06-13 Producing niobium or tantalum powder

Country Status (1)

Country Link
GB (1) GB1219748A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2201427A (en) * 1987-02-27 1988-09-01 Cabot Corp Method for deoxidising tantalum/columbium material
US6115235A (en) * 1997-02-28 2000-09-05 Showa Denko Kabushiki Kaisha Capacitor
US6423110B1 (en) 1999-12-08 2002-07-23 Showa Denko K.K. Powder composition for capacitor and sintered body using the composition, and capacitor using the sintered body
US6430026B1 (en) 1999-06-09 2002-08-06 Showa Denko K.K. Electrode material for capacitors and capacitor using the same
US6521013B1 (en) 1998-08-05 2003-02-18 Showa Denko Kabushiki Kaisha Niobium sintered body for capacitor and replace with process for producing same
US6529367B1 (en) 1998-12-15 2003-03-04 Showa Denko Kabushiki Kaisha Niobium capacitor and method of manufacture thereof
US6540810B2 (en) 2000-04-21 2003-04-01 Showa Denko Kabushiki Kaisha Niobium powder for capacitor, sintered body using the powder and capacitor using the same
US6660057B1 (en) 1999-10-01 2003-12-09 Showa Denko K.K. Powder composition for capacitor, sintered body using the composition and capacitor using the sintered body
US6671164B2 (en) 2000-04-24 2003-12-30 Showa Denko Kabushiki Kaisha Niobium powder, sintered body using the powder, and capacitor using the same

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2201427A (en) * 1987-02-27 1988-09-01 Cabot Corp Method for deoxidising tantalum/columbium material
GB2201427B (en) * 1987-02-27 1990-09-19 Cabot Corp Method for deoxidising tantalum/columbium material
US6115235A (en) * 1997-02-28 2000-09-05 Showa Denko Kabushiki Kaisha Capacitor
US6347032B2 (en) 1997-02-28 2002-02-12 Showa Denko Kabushiki Kaisha Capacitor
US7006343B2 (en) 1997-02-28 2006-02-28 Showa Denko Kabushiki Kaisha Capacitor
US6452777B1 (en) 1997-02-28 2002-09-17 Showa Denko Kabushiki Kaisha Capacitor
US6856500B2 (en) 1997-02-28 2005-02-15 Showa Denko Kabushiki Kaisha Capacitor
US6521013B1 (en) 1998-08-05 2003-02-18 Showa Denko Kabushiki Kaisha Niobium sintered body for capacitor and replace with process for producing same
US6656245B2 (en) * 1998-08-05 2003-12-02 Showa Denko Kabushiki Kaisha Niobium sintered body for capacitor and process for producing same
US6529367B1 (en) 1998-12-15 2003-03-04 Showa Denko Kabushiki Kaisha Niobium capacitor and method of manufacture thereof
US6661646B2 (en) 1998-12-15 2003-12-09 Showa Denko Kabushiki Kaisha Niobium capacitor and method of manufacture thereof
US6430026B1 (en) 1999-06-09 2002-08-06 Showa Denko K.K. Electrode material for capacitors and capacitor using the same
US6660057B1 (en) 1999-10-01 2003-12-09 Showa Denko K.K. Powder composition for capacitor, sintered body using the composition and capacitor using the sintered body
US7011692B2 (en) 1999-10-01 2006-03-14 Showa Denko K.K. Powder composition for capacitor, sintered body using the composition and capacitor using the sintered body
US6423110B1 (en) 1999-12-08 2002-07-23 Showa Denko K.K. Powder composition for capacitor and sintered body using the composition, and capacitor using the sintered body
US6689185B2 (en) 2000-04-21 2004-02-10 Showa Denko Kabushiki Kaisha Niobium powder for capacitor, sintered body using the powder and capacitor using the same
US6540810B2 (en) 2000-04-21 2003-04-01 Showa Denko Kabushiki Kaisha Niobium powder for capacitor, sintered body using the powder and capacitor using the same
US7037355B2 (en) 2000-04-21 2006-05-02 Showa Denko Kabushiki Kaisha Niobium powder for capacitor, sintered body using the powder and capacitor using the same
US6671164B2 (en) 2000-04-24 2003-12-30 Showa Denko Kabushiki Kaisha Niobium powder, sintered body using the powder, and capacitor using the same

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