EP1911862A3 - Electropolishing method for niobium and tantalum - Google Patents

Electropolishing method for niobium and tantalum Download PDF

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Publication number
EP1911862A3
EP1911862A3 EP07018328A EP07018328A EP1911862A3 EP 1911862 A3 EP1911862 A3 EP 1911862A3 EP 07018328 A EP07018328 A EP 07018328A EP 07018328 A EP07018328 A EP 07018328A EP 1911862 A3 EP1911862 A3 EP 1911862A3
Authority
EP
European Patent Office
Prior art keywords
niobium
tantalum
alloys
present
electrolyte
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.)
Granted
Application number
EP07018328A
Other languages
German (de)
French (fr)
Other versions
EP1911862A2 (en
EP1911862B1 (en
Inventor
Siegfried Piesslinger-Schweiger
Olaf BÖHME
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.)
Poligrat GmbH
Original Assignee
Poligrat GmbH
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 Poligrat GmbH filed Critical Poligrat GmbH
Publication of EP1911862A2 publication Critical patent/EP1911862A2/en
Publication of EP1911862A3 publication Critical patent/EP1911862A3/en
Application granted granted Critical
Publication of EP1911862B1 publication Critical patent/EP1911862B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
    • C25F3/00—Electrolytic etching or polishing
    • C25F3/16—Polishing
    • C25F3/22—Polishing of heavy metals
    • C25F3/26—Polishing of heavy metals of refractory metals

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • ing And Chemical Polishing (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Electroplating Methods And Accessories (AREA)

Abstract

Die vorliegende Erfindung betrifft ein Verfahren zum elektrochemischen Polieren von Oberflächen von Metallen und Metalllegierungen, insbesondere von Oberflächen aus Niob, Nioblegierungen, Tantal und Tantallegierungen. Hierbei wird ein Elektrolyt verwendet, der Methansulfonsäure und Ammoniumbifluorid umfasst, und der ebenfalls Gegenstand der vorliegenden Erfindung ist. Dieser Elektrolyt ermöglicht es, Niob- und/oder Tantal-haltige Werkstücke effizient, mit hoher Qualität und auf eine sowohl das Werkstück als auch Mensch und Umwelt schonende Weise zu elektropolieren.The present invention relates to a process for the electrochemical polishing of surfaces of metals and metal alloys, in particular surfaces of niobium, niobium alloys, tantalum and tantalum alloys. In this case, an electrolyte is used which comprises methanesulfonic acid and ammonium bifluoride, and which is also the subject of the present invention. This electrolyte makes it possible to electro-polise niobium- and / or tantalum-containing workpieces efficiently, with high quality, and in a manner that protects both the workpiece and the human and the environment.

EP07018328.0A 2006-10-09 2007-09-18 Electropolishing method for niobium and tantalum Not-in-force EP1911862B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006047713A DE102006047713B3 (en) 2006-10-09 2006-10-09 Electrolyte for electro-polishing surfaces of metal and metal alloys used in the production of gas turbines contains methane sulfonic acid and ammonium difluoride

Publications (3)

Publication Number Publication Date
EP1911862A2 EP1911862A2 (en) 2008-04-16
EP1911862A3 true EP1911862A3 (en) 2010-08-25
EP1911862B1 EP1911862B1 (en) 2017-03-01

Family

ID=38786963

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07018328.0A Not-in-force EP1911862B1 (en) 2006-10-09 2007-09-18 Electropolishing method for niobium and tantalum

Country Status (5)

Country Link
US (1) US20080099345A1 (en)
EP (1) EP1911862B1 (en)
JP (1) JP2008095192A (en)
CA (1) CA2605859A1 (en)
DE (1) DE102006047713B3 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100213078A1 (en) * 2009-02-25 2010-08-26 Ryszard Rokicki Electrolyte composition for electropolishing niobium and tantalum and method for using same
PL2504469T3 (en) * 2009-11-23 2018-12-31 Metcon, Llc Electropolishing methods
US8580103B2 (en) 2010-11-22 2013-11-12 Metcon, Llc Electrolyte solution and electrochemical surface modification methods
KR20170138575A (en) * 2010-11-22 2017-12-15 메트콘, 엘엘씨 Electrolyte solution and electrochemical surface modification methods
ES2604830B1 (en) 2016-04-28 2017-12-18 Drylyte, S.L. Process for smoothing and polishing metals by ionic transport by means of free solid bodies, and solid bodies to carry out said process.
EP3551786B1 (en) 2016-12-09 2021-04-07 RENA Technologies Austria GmbH Electropolishing method and electrolyte for same
AT520365B1 (en) * 2017-08-29 2019-10-15 Hirtenberger Eng Surfaces Gmbh ELECTROLYTE FOR ELECTROPOLISHING METAL SURFACES
ES2734499B2 (en) * 2018-11-12 2020-06-03 Drylyte Sl Use of sulfonic acids in dry electrolytes to polish metal surfaces through ion transport

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5632966A (en) * 1996-03-07 1997-05-27 Alliedsignal Inc. Process for hydrogen fluoride separation
WO2001071068A1 (en) * 2000-03-23 2001-09-27 Technische Universiteit Eindhoven Method for the electrolytic polishing of a metal in the presence of an electrolyte composition, as well as a moulded element obtained by using such a method
US6352636B1 (en) * 1999-10-18 2002-03-05 General Electric Company Electrochemical system and process for stripping metallic coatings
US20040178081A1 (en) * 2002-12-20 2004-09-16 Marianne Gottschling Process for the production of shaped articles of niobium or tantalum by electrochemical etching
DE10320909A1 (en) * 2003-05-09 2004-11-18 Poligrat Holding Gmbh Electrolyte for the electrochemical polishing of metal surfaces

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4663005A (en) * 1985-11-15 1987-05-05 Edson Gwynne I Electropolishing process
US6407047B1 (en) * 2000-02-16 2002-06-18 Atotech Deutschland Gmbh Composition for desmutting aluminum

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5632966A (en) * 1996-03-07 1997-05-27 Alliedsignal Inc. Process for hydrogen fluoride separation
US6352636B1 (en) * 1999-10-18 2002-03-05 General Electric Company Electrochemical system and process for stripping metallic coatings
WO2001071068A1 (en) * 2000-03-23 2001-09-27 Technische Universiteit Eindhoven Method for the electrolytic polishing of a metal in the presence of an electrolyte composition, as well as a moulded element obtained by using such a method
US20040178081A1 (en) * 2002-12-20 2004-09-16 Marianne Gottschling Process for the production of shaped articles of niobium or tantalum by electrochemical etching
DE10320909A1 (en) * 2003-05-09 2004-11-18 Poligrat Holding Gmbh Electrolyte for the electrochemical polishing of metal surfaces

Also Published As

Publication number Publication date
EP1911862A2 (en) 2008-04-16
DE102006047713B3 (en) 2008-03-27
JP2008095192A (en) 2008-04-24
CA2605859A1 (en) 2008-04-09
EP1911862B1 (en) 2017-03-01
US20080099345A1 (en) 2008-05-01

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