GB962904A - Improvements in the anodic surface treatment of titanium and titanium base alloys - Google Patents

Improvements in the anodic surface treatment of titanium and titanium base alloys

Info

Publication number
GB962904A
GB962904A GB1968859A GB1968859A GB962904A GB 962904 A GB962904 A GB 962904A GB 1968859 A GB1968859 A GB 1968859A GB 1968859 A GB1968859 A GB 1968859A GB 962904 A GB962904 A GB 962904A
Authority
GB
United Kingdom
Prior art keywords
metal
titanium
formate
anodizing
produce
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
GB1968859A
Inventor
Louis Lionel Shreir
Richard Anthony Piggott
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.)
SECR AVIATION
Minister of Aviation
Original Assignee
SECR AVIATION
Minister of Aviation
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 SECR AVIATION, Minister of Aviation filed Critical SECR AVIATION
Priority to GB1968859A priority Critical patent/GB962904A/en
Publication of GB962904A publication Critical patent/GB962904A/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
    • C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/02—Anodisation
    • C25D11/26—Anodisation of refractory metals or alloys based thereon

Landscapes

  • 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)

Abstract

A process of anodizing titanium or titanium base alloy to produce a surface which will absorb and retain lubricant comprises using an electrolyte containing an ionizable formate, such as an alkali metal, ammonium, or alkaline earth metal formate, and/or free formic acid, the latter, when present, having a concentration not higher than 60% v/v, the anodizing being effected at a temperature not higher than 50 DEG C. and at such a current density and for such a time as to produce a micro-pitted metal/metal oxide interface. The electrolyte may contain solvents such as alcohols or glycol and platinum or platinized titanium cathodes may be employed. In the case of tubes, a wire cathode extending through the tube interior may be used. The metal may be pretreated to remove atmospherically produced oxide film by immersing it in a solution comprising by volume 40% HNO3, 30% H2SO4 and 30% HF or alternatively by etching it in concentrated HCl. The micropitted metal, after removal of the anodic oxide coating, is receptive to the adhesion of other metals, e.g. Pt, by electroplating or other coating processes.
GB1968859A 1959-06-09 1959-06-09 Improvements in the anodic surface treatment of titanium and titanium base alloys Expired GB962904A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1968859A GB962904A (en) 1959-06-09 1959-06-09 Improvements in the anodic surface treatment of titanium and titanium base alloys

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1968859A GB962904A (en) 1959-06-09 1959-06-09 Improvements in the anodic surface treatment of titanium and titanium base alloys

Publications (1)

Publication Number Publication Date
GB962904A true GB962904A (en) 1964-07-08

Family

ID=10133546

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1968859A Expired GB962904A (en) 1959-06-09 1959-06-09 Improvements in the anodic surface treatment of titanium and titanium base alloys

Country Status (1)

Country Link
GB (1) GB962904A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4846837A (en) * 1986-02-12 1989-07-11 Technische Universitaet Karl-Marx-Stradt Ceramic-coated metal implants

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4846837A (en) * 1986-02-12 1989-07-11 Technische Universitaet Karl-Marx-Stradt Ceramic-coated metal implants

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