GB1237996A - - Google Patents

Info

Publication number
GB1237996A
GB1237996A GB1237996DA GB1237996A GB 1237996 A GB1237996 A GB 1237996A GB 1237996D A GB1237996D A GB 1237996DA GB 1237996 A GB1237996 A GB 1237996A
Authority
GB
United Kingdom
Prior art keywords
march
rinsed
hexovalent
electrogalvanised
mgms
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
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 GB1237996A publication Critical patent/GB1237996A/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
    • C23C22/05—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
    • C23C22/07—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 phosphates
    • C23C22/08—Orthophosphates
    • C23C22/12—Orthophosphates containing zinc cations
    • C23C22/13—Orthophosphates containing zinc cations containing also nitrate or nitrite anions

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

1,237,996. Phosphating electro-galvanised surfaces. PYRENE CO. Ltd. March 9, 1970 [March 7, 1969], No.11216/70. Heading C7U. Phosphate coatings of 50-200 mgms. /sq. ft. are formed on electrogalvanised surfaces, e.g. steel, by treating with a zinc acid phosphate solution containing 0À001-0À02% wt. NO 3 ions. Preferred solutions contain 0À12-0À5% Zn, 0À5-2À2% PO 4 , 0À005-0À015% NO 3 , up to 0À036% Ni and total acidity 7À5-30 points. Preferred temperature is 38‹ -60‹ C. and contact time 2-45 secs. Coated product is water rinsed and then rinsed in aqeuous hexovalent Cr as CrO 3 ,
GB1237996D 1969-03-07 1970-03-09 Expired GB1237996A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US80536469A 1969-03-07 1969-03-07

Publications (1)

Publication Number Publication Date
GB1237996A true GB1237996A (en) 1971-07-07

Family

ID=25191373

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1237996D Expired GB1237996A (en) 1969-03-07 1970-03-09

Country Status (5)

Country Link
BE (1) BE744815A (en)
CA (1) CA928619A (en)
ES (1) ES376636A1 (en)
FR (1) FR2033717A5 (en)
GB (1) GB1237996A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3245411A1 (en) * 1982-12-08 1984-07-05 Gerhard Collardin GmbH, 5000 Köln METHOD FOR PHOSPHATING ELECTROLYTICALLY GALVANIZED METAL GOODS
DE3630246A1 (en) * 1986-09-05 1988-03-10 Metallgesellschaft Ag METHOD FOR PRODUCING PHOSPHATE COVER AND ITS APPLICATION

Also Published As

Publication number Publication date
BE744815A (en) 1970-07-01
CA928619A (en) 1973-06-19
ES376636A1 (en) 1972-05-01
FR2033717A5 (en) 1970-12-04

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Legal Events

Date Code Title Description
PS Patent sealed
PLE Entries relating assignments, transmissions, licences in the register of patents
PLNP Patent lapsed through nonpayment of renewal fees