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GB1435518A - Electrolytic treatment of chromium-containing alloys and electro lytes for use therein - Google Patents

Electrolytic treatment of chromium-containing alloys and electro lytes for use therein

Info

Publication number
GB1435518A
GB1435518A GB4704872A GB4704872A GB1435518A GB 1435518 A GB1435518 A GB 1435518A GB 4704872 A GB4704872 A GB 4704872A GB 4704872 A GB4704872 A GB 4704872A GB 1435518 A GB1435518 A GB 1435518A
Authority
GB
United Kingdom
Prior art keywords
chromic
agent
chromium
alloy
cro
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
GB4704872A
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.)
Inco Ltd
Original Assignee
Inco 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 Inco Ltd filed Critical Inco Ltd
Priority to GB5911073*A priority Critical patent/GB1436150A/en
Priority to GB4704872A priority patent/GB1435518A/en
Priority to CA155,185A priority patent/CA1012922A/en
Priority to US00301810A priority patent/US3832292A/en
Priority to IT52892/73A priority patent/IT1066695B/en
Priority to CH1450873A priority patent/CH557889A/en
Priority to FR7336340A priority patent/FR2202956B2/fr
Priority to ES419556A priority patent/ES419556A2/en
Priority to ZA00737932A priority patent/ZA737932B/en
Priority to DK551873A priority patent/DK144338C/en
Priority to SE7313810A priority patent/SE435939B/en
Priority to DE2350994A priority patent/DE2350994C3/en
Priority to BE136580A priority patent/BE805953R/en
Priority to AU61281/73A priority patent/AU479498B2/en
Priority to NL7313995.A priority patent/NL165229C/en
Priority to IN2269/CAL/73A priority patent/IN140769B/en
Priority to JP11525573A priority patent/JPS5546476B2/ja
Priority to AT873773A priority patent/AT326441B/en
Publication of GB1435518A publication Critical patent/GB1435518A/en
Priority to HK70776A priority patent/HK70776A/en
Priority to HK722/76*UA priority patent/HK72276A/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
    • C25D9/00—Electrolytic coating other than with metals
    • C25D9/04—Electrolytic coating other than with metals with inorganic materials
    • C25D9/08—Electrolytic coating other than with metals with inorganic materials by cathodic processes
    • C25D9/10—Electrolytic coating other than with metals with inorganic materials by cathodic processes on iron or steel
    • 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
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Electroplating And Plating Baths Therefor (AREA)
  • Chemical Treatment Of Metals (AREA)
  • Electrochemical Coating By Surface Reaction (AREA)

Abstract

1435518 Electrolytically hardening a film formed on a chromium containing iron alloy INTERNATIONAL NICKEL Ltd 9 Oct 1973 [12 Oct 1972] 47048/72 Headings C7B and C7U The hardness of a porous film, formed on the surface of a Cr-containing Fe alloy by treatment in aqueous chromic and sulphuric acids, is increased by cathodic electrolysis in an electrolyte containing chromic acid and an agent (other than SiF 6 <SP>-</SP> or F<SP>-</SP> ions) capable of promoting the cathodic deposition of an oxidic Cr deposit in preference to metallic Cr. The bath may contain 0.25-7.5 mole/litre CrO 3 with a CrO 3 : agent mole ratio of 20-500:1. The agent may be Ct (from Cr Cl 3 ), NO 3 <SP>-</SP>(HNO 3 ), PO 4 <SP>3-</SP>(H 3 PO 4 ) or acetate (HAc). Current densities of 0.05-17.2 A/dm<SP>2</SP> are disclosed for 2-30 minutes at 20-60‹C. The alloy treated may contain 18-20% Cr and 8-12% Ni. The deposit may be chromic oxide, hydrated chromic oxide and/or chromic hydroxide.
GB4704872A 1970-05-26 1972-10-12 Electrolytic treatment of chromium-containing alloys and electro lytes for use therein Expired GB1435518A (en)

Priority Applications (20)

Application Number Priority Date Filing Date Title
GB5911073*A GB1436150A (en) 1970-05-26 1972-10-12 Electrolytic treatment of chromium containing alloys and electrolytes for use therein
GB4704872A GB1435518A (en) 1972-10-12 1972-10-12 Electrolytic treatment of chromium-containing alloys and electro lytes for use therein
CA155,185A CA1012922A (en) 1972-10-12 1972-10-30 Catalytic cathodic hardening of oxide films
US00301810A US3832292A (en) 1972-10-12 1972-10-30 Catalytic cathodic hardening of oxide films
IT52892/73A IT1066695B (en) 1972-10-12 1973-10-03 METHOD FOR TREATING ALLOYS CONTAINING CHROME AND ELECTROLYTES USED IN IT
DK551873A DK144338C (en) 1972-10-12 1973-10-11 PROCEDURE AND ELECTROLYTE TO INCREASE THE HARDNESS OF A MOVIE CREATED ON THE SURFACE OF A CORROSION RESISTANT, CHROME-PROCEDURAL IRON ALLOY
NL7313995.A NL165229C (en) 1972-10-12 1973-10-11 METHOD FOR INCREASING THE HARDNESS OF A POROUS LAYER THAT IS FORMED ON THE SURFACE OF A CRYSTAL IRON ALLOY.
ES419556A ES419556A2 (en) 1971-05-24 1973-10-11 Method of increasing the hardness of a film formed on the surface of an alloy. (Machine-translation by Google Translate, not legally binding)
ZA00737932A ZA737932B (en) 1972-10-12 1973-10-11 Electrolytic treatment of chromium-containing alloys and electrolyties for use therein
CH1450873A CH557889A (en) 1972-10-12 1973-10-11 PROCEDE DE TRAITEMENT ELECTROLYTIQUE D'ALLIAGES CONTENANT DU CHROME.
SE7313810A SE435939B (en) 1972-10-12 1973-10-11 VIEW TO HAVE THE HARDNESS OF A POROS MOVIE THAT WAS PICTURED ON THE SURFACE OF A CHROME STAINLESS STEEL STYLE BY TREATING THE STEEL IN A WATER SOLUTION OF CHROME AND SULFUR ACIDS
DE2350994A DE2350994C3 (en) 1972-10-12 1973-10-11 Method and electrolyte for increasing the hardness of a porous coating
BE136580A BE805953R (en) 1972-10-12 1973-10-11 TREATMENT OF STAINLESS STEELS AND OBTAINED STEELS
AU61281/73A AU479498B2 (en) 1972-10-12 1973-10-11 Electrolytic treatment of chromium-containing alloys and electrolytes for use therein
FR7336340A FR2202956B2 (en) 1972-10-12 1973-10-11
IN2269/CAL/73A IN140769B (en) 1971-05-18 1973-10-12
JP11525573A JPS5546476B2 (en) 1972-10-12 1973-10-12
AT873773A AT326441B (en) 1972-10-12 1973-10-12 METHOD OF ELECTROLYTIC HARDENING OF A FILM FORMED ON A CHROME-CONTAINING ALLOY
HK70776A HK70776A (en) 1972-10-12 1976-11-11 Electrolytic treatment of chromium containing alloys and electrolytes for use therein
HK722/76*UA HK72276A (en) 1972-10-12 1976-11-18 Electrolytic treatment of chromium-containing alloys and electrolytes for use therein

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4704872A GB1435518A (en) 1972-10-12 1972-10-12 Electrolytic treatment of chromium-containing alloys and electro lytes for use therein

Publications (1)

Publication Number Publication Date
GB1435518A true GB1435518A (en) 1976-05-12

Family

ID=10443517

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4704872A Expired GB1435518A (en) 1970-05-26 1972-10-12 Electrolytic treatment of chromium-containing alloys and electro lytes for use therein

Country Status (16)

Country Link
US (1) US3832292A (en)
JP (1) JPS5546476B2 (en)
AT (1) AT326441B (en)
BE (1) BE805953R (en)
CA (1) CA1012922A (en)
CH (1) CH557889A (en)
DE (1) DE2350994C3 (en)
DK (1) DK144338C (en)
ES (1) ES419556A2 (en)
FR (1) FR2202956B2 (en)
GB (1) GB1435518A (en)
HK (1) HK72276A (en)
IT (1) IT1066695B (en)
NL (1) NL165229C (en)
SE (1) SE435939B (en)
ZA (1) ZA737932B (en)

Cited By (2)

* 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
GB2230275A (en) * 1989-02-27 1990-10-17 Omi Int Corp Conversion composition and process

Families Citing this family (5)

* 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
CA1274754A (en) * 1985-09-06 1990-10-02 Gary A. Reghi Passivation process and composition for zinc-aluminum alloys
JPS62168006U (en) * 1986-04-16 1987-10-24
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
KR102572078B1 (en) * 2018-01-04 2023-08-30 삼성전자주식회사 Passivation Surface Treatment of Stainless Steel

Cited By (2)

* 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
GB2230275A (en) * 1989-02-27 1990-10-17 Omi Int Corp Conversion composition and process

Also Published As

Publication number Publication date
DE2350994A1 (en) 1974-05-09
CH557889A (en) 1975-01-15
ATA873773A (en) 1975-02-15
AT326441B (en) 1975-12-10
BE805953R (en) 1974-04-11
IT1066695B (en) 1985-03-12
SE435939B (en) 1984-10-29
DK144338C (en) 1982-07-19
US3832292A (en) 1974-08-27
JPS5546476B2 (en) 1980-11-25
DK144338B (en) 1982-02-22
DE2350994B2 (en) 1979-02-22
ZA737932B (en) 1975-06-25
NL165229C (en) 1981-03-16
NL165229B (en) 1980-10-15
FR2202956A2 (en) 1974-05-10
FR2202956B2 (en) 1977-09-09
NL7313995A (en) 1974-04-16
ES419556A2 (en) 1976-05-01
AU6128173A (en) 1975-04-17
DE2350994C3 (en) 1979-10-11
HK72276A (en) 1976-11-26
CA1012922A (en) 1977-06-28
JPS4994530A (en) 1974-09-07

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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

Effective date: 19931008