GB438816A - Improvements relating to a protective treatment of metals and alloys - Google Patents

Improvements relating to a protective treatment of metals and alloys

Info

Publication number
GB438816A
GB438816A GB23328/34A GB2332834A GB438816A GB 438816 A GB438816 A GB 438816A GB 23328/34 A GB23328/34 A GB 23328/34A GB 2332834 A GB2332834 A GB 2332834A GB 438816 A GB438816 A GB 438816A
Authority
GB
United Kingdom
Prior art keywords
salt
solution
treatment
phosphate
copper
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
GB23328/34A
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.)
Individual
Original Assignee
Individual
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
Priority to BE410815D priority Critical patent/BE410815A/xx
Application filed by Individual filed Critical Individual
Priority to GB23328/34A priority patent/GB438816A/en
Priority to US32117A priority patent/US2097211A/en
Priority to FR793729D priority patent/FR793729A/en
Publication of GB438816A publication Critical patent/GB438816A/en
Expired legal-status Critical Current

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
    • C23C22/78—Pretreatment of the material to be coated

Landscapes

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

Abstract

Metals which are to be coated with a surface layer of phosphate G by treatment with phosphoric acid or a solution of phosphates are subjected to a preliminary treatment by immersion for a period of from a few seconds to a few minutes in a dilute solution of a copper salt, e.g. the sulphate, or a nickel salt, or a solution containing both a copper salt and a nickel salt. The metal may be given a treatment in a solution of a zinc salt prior to the treatment in the copper or nickel salt solution or a zinc salt may be added to the solution of the copper or nickel salt. An electric current is preferably employed to hasten the action, the article being made the cathode. The conditions of the preliminary treatment are such that no definite plating is formed, but the metal is given a smooth surface which improves the adherence of the phosphate coating. When a preliminary treatment in a zinc salt solution is employed a solution containing zinc sulphate, common salt, boric acid, aluminium sulphate, and dextrine may be used. The phosphate coating may be formed by using a bath of phosphoric acid or iron phosphate with or without metallic iron. Other phosphates such as chromium, nickel, or copper phosphate may be added to the bath. After the phosphate coating has been formed the treated metal may be immersed in oil at ordinary or at elevated temperature. According to the first Provisional Specification an electric current may be used during the phosphate treatment and according to the second Provisional Specification the preliminary treatment may comprise the deposition of any metal, e.g. zinc, either by electrolysis or by simple immersion.
GB23328/34A 1934-08-13 1934-08-13 Improvements relating to a protective treatment of metals and alloys Expired GB438816A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
BE410815D BE410815A (en) 1934-08-13
GB23328/34A GB438816A (en) 1934-08-13 1934-08-13 Improvements relating to a protective treatment of metals and alloys
US32117A US2097211A (en) 1934-08-13 1935-07-18 Protective treatment of metals and alloys
FR793729D FR793729A (en) 1934-08-13 1935-08-10 Improvements relating to a protective treatment for metals and alloys

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB23328/34A GB438816A (en) 1934-08-13 1934-08-13 Improvements relating to a protective treatment of metals and alloys

Publications (1)

Publication Number Publication Date
GB438816A true GB438816A (en) 1935-11-25

Family

ID=10193827

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23328/34A Expired GB438816A (en) 1934-08-13 1934-08-13 Improvements relating to a protective treatment of metals and alloys

Country Status (4)

Country Link
US (1) US2097211A (en)
BE (1) BE410815A (en)
FR (1) FR793729A (en)
GB (1) GB438816A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0035193A1 (en) * 1980-02-21 1981-09-09 Nippon Steel Corporation Process for producing cold rolled steel strip having an excellent phosphatizing property

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3468724A (en) * 1966-03-31 1969-09-23 Amchem Prod Metal coating process
FR1554824A (en) * 1967-12-04 1969-01-24
JPS58181889A (en) * 1982-04-17 1983-10-24 Nippon Steel Corp Preparation of single surface zinc electroplated steel plate
DE4012795A1 (en) * 1990-04-21 1991-10-24 Metallgesellschaft Ag ACTIVATING AGENT FOR PHOSPHATING
US9574093B2 (en) * 2007-09-28 2017-02-21 Ppg Industries Ohio, Inc. Methods for coating a metal substrate and related coated metal substrates
US8282801B2 (en) * 2008-12-18 2012-10-09 Ppg Industries Ohio, Inc. Methods for passivating a metal substrate and related coated metal substrates

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0035193A1 (en) * 1980-02-21 1981-09-09 Nippon Steel Corporation Process for producing cold rolled steel strip having an excellent phosphatizing property

Also Published As

Publication number Publication date
FR793729A (en) 1936-01-30
BE410815A (en)
US2097211A (en) 1937-10-26

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