IE36418B1 - Treatment of chromium alloys - Google Patents

Treatment of chromium alloys

Info

Publication number
IE36418B1
IE36418B1 IE844/72A IE84472A IE36418B1 IE 36418 B1 IE36418 B1 IE 36418B1 IE 844/72 A IE844/72 A IE 844/72A IE 84472 A IE84472 A IE 84472A IE 36418 B1 IE36418 B1 IE 36418B1
Authority
IE
Ireland
Prior art keywords
treatment
definite
colouring
chromium alloys
potential difference
Prior art date
Application number
IE844/72A
Other versions
IE36418L (en
Inventor
A C Hart
V A Smith
A N Skedgell
Original Assignee
Int Nickel Ltd
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 Int Nickel Ltd filed Critical Int Nickel Ltd
Publication of IE36418L publication Critical patent/IE36418L/en
Publication of IE36418B1 publication Critical patent/IE36418B1/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
    • C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
    • C23C22/24—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing hexavalent chromium compounds
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/73—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals characterised by the process
    • C23C22/77—Controlling or regulating of the coating process
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D21/00—Processes for servicing or operating cells for electrolytic coating
    • C25D21/12—Process control or regulation
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G23/00—Feeding fibres to machines; Conveying fibres between machines
    • D01G23/02—Hoppers; Delivery shoots

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Metallurgy (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Textile Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Electrochemistry (AREA)
  • Chemical Treatment Of Metals (AREA)
  • Electrochemical Coating By Surface Reaction (AREA)

Abstract

Colouring of the surface of a chromium alloy which is immersed in an aqs. solns of chromic acid and sulphuric acid, is controlled by maintaining a potential difference between the surface of the alloya dn a reference electrode and removing the alloy from the soln when this potential difference alters by a definite degree from the predefined bending potential, the definite degree being related to the desired colour. Process enables a definite colour to be obtd. reproducibly on the surface of the chromium alloy without using visual control of the colouring process. [FR2143231A1]
IE844/72A 1971-06-22 1972-06-15 Treatment of chromium alloys IE36418B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB2922971 1971-06-22
GB1794072 1972-04-18

Publications (2)

Publication Number Publication Date
IE36418L IE36418L (en) 1972-12-22
IE36418B1 true IE36418B1 (en) 1976-10-27

Family

ID=26253018

Family Applications (1)

Application Number Title Priority Date Filing Date
IE844/72A IE36418B1 (en) 1971-06-22 1972-06-15 Treatment of chromium alloys

Country Status (16)

Country Link
JP (1) JPS5225817B1 (en)
AT (1) AT313013B (en)
AU (1) AU462078B2 (en)
BE (1) BE785277A (en)
CA (1) CA970667A (en)
CH (1) CH554422A (en)
DK (1) DK136623B (en)
FI (1) FI53136C (en)
FR (1) FR2143231A1 (en)
IE (1) IE36418B1 (en)
IL (1) IL39698A0 (en)
IT (1) IT958597B (en)
LU (1) LU65545A1 (en)
NL (1) NL147790B (en)
NO (1) NO130690C (en)
SE (1) SE373883B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5479823U (en) * 1977-11-11 1979-06-06
JPS6022065B2 (en) * 1983-07-11 1985-05-30 日新製鋼株式会社 Continuous coloring method for stainless steel strip
US4576414A (en) * 1984-01-27 1986-03-18 Caterpiller Tractor Co. Seat belt apparatus
JP5030560B2 (en) * 2006-11-29 2012-09-19 クリナップ株式会社 Mirror cabinet

Also Published As

Publication number Publication date
FR2143231B1 (en) 1978-03-03
AT313013B (en) 1974-01-25
IL39698A0 (en) 1972-08-30
NO130690C (en) 1975-01-22
IT958597B (en) 1973-10-30
FI53136C (en) 1978-02-10
AU462078B2 (en) 1975-05-20
DK136623B (en) 1977-10-31
NO130690B (en) 1974-10-14
JPS5225817B1 (en) 1977-07-09
DK136623C (en) 1978-04-10
AU4349572A (en) 1973-12-20
NL7208471A (en) 1972-12-28
CA970667A (en) 1975-07-08
DE2230157A1 (en) 1973-02-01
CH554422A (en) 1974-09-30
FI53136B (en) 1977-10-31
NL147790B (en) 1975-11-17
LU65545A1 (en) 1973-01-22
SE373883B (en) 1975-02-17
IE36418L (en) 1972-12-22
DE2230157B2 (en) 1975-12-11
BE785277A (en) 1972-12-22
FR2143231A1 (en) 1973-02-02

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