GB1146443A - Impressed current protection of titanium or titanium alloy in acid aqueous solution - Google Patents

Impressed current protection of titanium or titanium alloy in acid aqueous solution

Info

Publication number
GB1146443A
GB1146443A GB16247/66A GB1624766A GB1146443A GB 1146443 A GB1146443 A GB 1146443A GB 16247/66 A GB16247/66 A GB 16247/66A GB 1624766 A GB1624766 A GB 1624766A GB 1146443 A GB1146443 A GB 1146443A
Authority
GB
United Kingdom
Prior art keywords
titanium
plating
electro
alloy
acid
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
GB16247/66A
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.)
M&T Chemicals Inc
Original Assignee
M&T Chemicals 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 M&T Chemicals Inc filed Critical M&T Chemicals Inc
Publication of GB1146443A publication Critical patent/GB1146443A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D3/00—Electroplating: Baths therefor
    • C25D3/02—Electroplating: Baths therefor from solutions
    • C25D3/12—Electroplating: Baths therefor from solutions of nickel or cobalt
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D3/00—Electroplating: Baths therefor
    • C25D3/02—Electroplating: Baths therefor from solutions
    • C25D3/48—Electroplating: Baths therefor from solutions of gold
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D3/00—Electroplating: Baths therefor
    • C25D3/02—Electroplating: Baths therefor from solutions
    • C25D3/50—Electroplating: Baths therefor from solutions of platinum group metals
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/34—Pretreatment of metallic surfaces to be electroplated
    • C25D5/42—Pretreatment of metallic surfaces to be electroplated of light metals
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D7/00—Electroplating characterised by the article coated
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D3/00—Electroplating: Baths therefor
    • C25D3/02—Electroplating: Baths therefor from solutions
    • C25D3/04—Electroplating: Baths therefor from solutions of chromium

Abstract

1,146,443. Preventing corrosion of titanium; electro-plating. M. & T. CHEMICALS Inc. April13, 1966 [April 14, 1965], No.16247/66. Headings C7B and C7E. Titanium or an alloy containing at least 90% Ti is protected from etching while immersed in an aqueous acid solution by placing it in intimate electrical contact with a low hydrogen overvoltage metal having a hydrogen overvoltage equal to or less than that of massive nickel and maintaining on the titanium or alloy a cathodic current density of 0À1 to 2 amps/sq. dm. The low hydrogen overvoltage metal which may be Pt, Pd, Rh, Ir, Au or Ni (including black nickel and electroless nickel) may be placed in intimate contact with the titanium or alloy by overlaying with a foil or a thin foraminous sheet of the metal, or by hot-melt dipping, dusting with metal powder followed by fusing, by immersion plating, by applying a foraminous sheet of a high hydrogen overvoltage metal e.g. steel itself coated with a low hydrogen overvoltage metal such as Pt or Pd, or by electroplating. Water-soluble compounds suitable for use in electro-plating are chloroplatinic acid or its potassium salt, platinum chloride, platinum diamino dinitrite, tetrammine platinous chloride or fluoride, potassium chloroplatinite, palladium dichloride, palladium nitrate, rhodium chloride, iridium tetrachloride, chloroiridic acid, chloroauric acid, gold chloride, and gold cyanide. Electro-plating is effected at temperatures of 20 to 90‹ C. with a cathode current density of 0À5 to 5 amps. /sq.dm. for 0À2 to 5 minutes to give deposits of thickness 0À05 to 0À5 Á which may be porous or even form discrete islands. Strips of Ti alloy containing 2% by weight Pd electro-plated with 0À15 Á Pt from an acid aqueous chloroplatinic acid solution suffered no loss in weight when made cathodic at a current density of 0À8 amp. /sq.dm. in a chromic acid plating bath containing silicofluoride and sulphate catalyst ions. Titanium or alloy so protected may be used for heating coils or elements, heat exchanger coils, partitions, stirrers or as sheets, rods or Ti-clad sheets in such chromium electro-plating baths. Reference is made also to protection in chromic acid plating baths containing simple fluoride, fluoaluminate, fluotitanate or fluoborate catalyst ions.
GB16247/66A 1965-04-14 1966-04-13 Impressed current protection of titanium or titanium alloy in acid aqueous solution Expired GB1146443A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US447973A US3412000A (en) 1965-04-14 1965-04-14 Cathodic protection of titanium surfaces

Publications (1)

Publication Number Publication Date
GB1146443A true GB1146443A (en) 1969-03-26

Family

ID=23778493

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16247/66A Expired GB1146443A (en) 1965-04-14 1966-04-13 Impressed current protection of titanium or titanium alloy in acid aqueous solution

Country Status (5)

Country Link
US (1) US3412000A (en)
JP (1) JPS5012381B1 (en)
DE (1) DE1521875A1 (en)
GB (1) GB1146443A (en)
NL (1) NL6604939A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1403399A2 (en) * 2002-09-25 2004-03-31 Titanium Metals Corporation Titanium article having improved corrosion resistance

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3505178A (en) * 1967-05-12 1970-04-07 Engelhard Ind Inc Process of electroplating an article by sequentially passing the same and a platinum coated tungsten anode through a series of different electroplating baths
FI59426C (en) * 1974-02-15 1981-08-10 Froehler Kg Hans ELEKTROLYSANLAEGGNING FOER FRAETANDE ELEKTROLYTER
US4268586A (en) * 1975-06-26 1981-05-19 General Electric Company Corrosion resistant zirconium alloy structural components and process
US4256556A (en) * 1978-11-24 1981-03-17 Diamond Shamrock Corporation Anodically polarized surface for biofouling and scale control
JPH023901U (en) * 1988-06-16 1990-01-11
US20040026256A1 (en) * 2002-08-08 2004-02-12 Lindgren Joseph T. Method and apparatus for protecting tooling in a lead-free bath

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2507400A (en) * 1943-08-02 1950-05-09 Sk Wellman Co Method of electroplating with iron and cobalt
US2538991A (en) * 1946-04-06 1951-01-23 Buel Metals Company Process for producing brittle iron plate
US2834101A (en) * 1955-02-23 1958-05-13 Curtiss Wright Corp Method of brazing titanium
BE569804A (en) * 1957-07-26
NL99396C (en) * 1957-10-24 1900-01-01
US2987453A (en) * 1959-04-14 1961-06-06 Harshaw Chem Corp Method of electrodepositing chromium
US3065154A (en) * 1959-06-29 1962-11-20 Bendix Corp Method of plating chromium and the like to titanium, its alloys, and the like
US3103484A (en) * 1959-10-10 1963-09-10 Anodes for electrolytic chlorine
US3254015A (en) * 1961-07-28 1966-05-31 Bishop & Co Platinum Works J Process for treating platinum-coated electrodes
GB1008032A (en) * 1962-10-08 1965-10-22 Englehard Ind Inc Electrodeposition of platinum

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1403399A2 (en) * 2002-09-25 2004-03-31 Titanium Metals Corporation Titanium article having improved corrosion resistance
EP1403399A3 (en) * 2002-09-25 2004-04-07 Titanium Metals Corporation Titanium article having improved corrosion resistance
EP1734153A2 (en) * 2002-09-25 2006-12-20 Titanium Metals Corporation Titanium article having improved corrosion resistance
EP1734153A3 (en) * 2002-09-25 2007-04-11 Titanium Metals Corporation Titanium article having improved corrosion resistance
KR100721107B1 (en) 2002-09-25 2007-05-22 티타늄 메탈스 코포레이션 Titanium article having corrosion resistance

Also Published As

Publication number Publication date
US3412000A (en) 1968-11-19
JPS5012381B1 (en) 1975-05-12
NL6604939A (en) 1966-10-17
DE1521875A1 (en) 1969-10-23

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