GB1305636A - - Google Patents

Info

Publication number
GB1305636A
GB1305636A GB2521570A GB1305636DA GB1305636A GB 1305636 A GB1305636 A GB 1305636A GB 2521570 A GB2521570 A GB 2521570A GB 1305636D A GB1305636D A GB 1305636DA GB 1305636 A GB1305636 A GB 1305636A
Authority
GB
United Kingdom
Prior art keywords
film
alloy
coloured
acid
solution
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
GB2521570A
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 filed Critical
Publication of GB1305636A publication Critical patent/GB1305636A/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
    • C25D11/38—Chromatising
    • 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
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F17/00—Multi-step processes for surface treatment of metallic material involving at least one process provided for in class C23 and at least one process covered by subclass C21D or C22F or class C25

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Treatment Of Metals (AREA)
  • Electroplating Methods And Accessories (AREA)

Abstract

1305636 Electrolytically hardening a film formed on a chromium containing alloy INTERNATIONAL NICKEL Ltd 14 May 1971 [26 May 1970; 11 Jan 1971] 25215/70 Headings C7B and C7U A corrosion-resistant Cr-containing alloy is treated in an aqueous solution of chromic and sulphuric acids, with or without other constituents, to form a film (e. g. a coloured film) thereon and thereafter is subjected to electrolysis as the cathode in an electrolyte from which Cr can be deposited for a period of time adequate to harden the film but not so long that any Cr becomes visible on the surface as a white deposit. It is statedthat possibly metallic chromium is deposited. The electrolysis electrolyte may be (i) an aqueous solution of chromic and sulphuric acid, (ii) a solution of chromic acid containing additions of silico-fluoride or fluoride ions either singly or in combination with sulphate ions or (iii) a solution of a trivalent Cr salt dissolved in dimethyl formamide solution. The Cr-containing alloy may be austenitic, ferritic or martensitic stainless steel, iron based alloy of Fe-Ni-Cr-Mo-Ti-Al, cobalt based alloy of Co-Cr-Ni-Mo or an alloy of Ni-Cr-Ti. Different colours may be produced on different parts of the Cr-containing alloy by forming an acid-resisting layer on one or more areas, initiating the film-forming treatment, removing the acid-resisting layer, completing the film forming treatment, and then subjecting the whole alloy to the cathodic hardening treatment. Coloured steel sheets treated by the process can be deep drawn or passed through patterned rolls to increase their rigidity. Since the hardened coloured films resist boiling water, coloured stainless steel saucepans can be produced.
GB2521570A 1970-05-26 1970-05-26 Expired GB1305636A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB2521570 1970-05-26
GB124571 1971-01-11

Publications (1)

Publication Number Publication Date
GB1305636A true GB1305636A (en) 1973-02-07

Family

ID=26236586

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2521570A Expired GB1305636A (en) 1970-05-26 1970-05-26

Country Status (13)

Country Link
US (2) US3755117A (en)
JP (1) JPS5331817B1 (en)
AT (1) AT304986B (en)
BE (1) BE767691A (en)
CA (2) CA1009605A (en)
CH (1) CH525287A (en)
DK (1) DK135855B (en)
ES (1) ES391488A1 (en)
FR (1) FR2090295B1 (en)
GB (1) GB1305636A (en)
NL (1) NL149556B (en)
NO (1) NO130239B (en)
SE (1) SE382079B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4518467A (en) * 1981-06-01 1985-05-21 Inco Selective Surfaces Limited Selective solar surfaces

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1569882A (en) * 1976-02-13 1980-06-25 Inco Europ Ltd Treatment of chromium-containing iron alloys
US4915799A (en) * 1986-02-21 1990-04-10 Kinki Yakuhin Industrial Co., Ltd. Electrolytic coloring method for chromium alloy
US4756874A (en) * 1986-12-22 1988-07-12 General Electric Company Minimization of radioactive material deposition in water-cooled nuclear reactors
US20050266130A1 (en) * 2004-05-28 2005-12-01 Henry Aoki Method for solidification and storing of components extracted from plant, animal, or mineral matter and extract components extracted from held plant, animal, or mineral matter
US20050287222A1 (en) * 2004-06-24 2005-12-29 Henry Aoki Method for producing water containing extracted ingredients from plant, animal, or mineral matter
EP1995355A1 (en) * 2006-10-24 2008-11-26 Wolf-Dieter Franz Greyish chromium surface
JP5030560B2 (en) * 2006-11-29 2012-09-19 クリナップ株式会社 Mirror cabinet
US8128994B1 (en) * 2008-09-30 2012-03-06 Taylor Made Golf Company, Inc. Method of applying decorative layers to a steel shaft
CN106435585B (en) * 2016-08-16 2019-07-12 深圳市诚达科技股份有限公司 A kind of surface C TS method for anti-corrosion treatment of stainless steel part

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA448565A (en) * 1948-05-18 The Coloron Corporation Electroplating
US1827247A (en) * 1927-10-18 1931-10-13 Western Electric Co Method of protecting metal surfaces
US1827204A (en) * 1927-10-18 1931-10-13 Western Electric Co Method of protecting metal surfaces
US1946151A (en) * 1931-06-20 1934-02-06 Aluminum Co Of America Protecting aluminum from corrosion
US2283171A (en) * 1938-06-30 1942-05-19 Allegheny Ludlum Steel Colored steel
US2219554A (en) * 1938-11-23 1940-10-29 Allegheny Ludlum Steel Coloration of stainless steel
US2172353A (en) * 1938-11-23 1939-09-12 Allegheny Ludlum Steel Coloration of stainless steel
US3081238A (en) * 1958-09-03 1963-03-12 Quaker Chem Corp Electrolytic treatment of metal surfaces
US3210220A (en) * 1962-07-30 1965-10-05 Norman E Clegg Process for coating stainless steel
GB1097197A (en) * 1965-11-05 1967-12-29 Int Nickel Ltd Colouring nickel-containing stainless steel
BE696034A (en) * 1966-03-26 1967-09-01
US3535213A (en) * 1967-12-20 1970-10-20 Yawata Seitetsu Kk Method of surface-treating metals

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4518467A (en) * 1981-06-01 1985-05-21 Inco Selective Surfaces Limited Selective solar surfaces

Also Published As

Publication number Publication date
CH525287A (en) 1972-07-15
FR2090295A1 (en) 1972-01-14
US3755117A (en) 1973-08-28
US3766023A (en) 1973-10-16
NO130239B (en) 1974-07-29
AT304986B (en) 1973-02-12
CA1008401A (en) 1977-04-12
DE2126129A1 (en) 1971-12-09
BE767691A (en) 1971-11-26
JPS5331817B1 (en) 1978-09-05
SE382079B (en) 1976-01-12
ES391488A1 (en) 1973-06-16
NL149556B (en) 1976-05-17
NL7107126A (en) 1971-11-30
DK135855C (en) 1977-11-28
FR2090295B1 (en) 1975-01-17
CA1009605A (en) 1977-05-03
DK135855B (en) 1977-07-04
DE2126129B2 (en) 1976-08-05

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years