MD960309A - Procedeu de tratare a metalului cu o compoziţie acidă apoasă care nu conţine crom (VI) - Google Patents

Procedeu de tratare a metalului cu o compoziţie acidă apoasă care nu conţine crom (VI)

Info

Publication number
MD960309A
MD960309A MD96-0309A MD960309A MD960309A MD 960309 A MD960309 A MD 960309A MD 960309 A MD960309 A MD 960309A MD 960309 A MD960309 A MD 960309A
Authority
MD
Moldova
Prior art keywords
component
anions
chromium
aqueous acidic
thah
Prior art date
Application number
MD96-0309A
Other languages
English (en)
Russian (ru)
Inventor
Shawn Dolan
Original Assignee
Henkel Corporation
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 Henkel Corporation filed Critical Henkel Corporation
Publication of MD960309A publication Critical patent/MD960309A/ro

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
    • C23C22/34—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 fluorides or complex fluorides

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

Invenţia se referă la procedeele de tratare a suprafeţelor de metal cu compoziţii acide apoase pentru formarea unor învelişuri, ce se transformă prin uscare pe loc.Procedeul constă în aceea că învelişul de conversiune lipsit de crom, cel puţin, echivalent, după valorile rezistenţei la coroziune, cu învelişurile de conversiune obişnuite cu crom, poate fi format pe metale, în special, pe oţel zincat, cu un lichid acid apos, ce se usucă, care conţine: (A) un component al anionilor, fiecare constând din (i), cel puţin, patru atomi de fluor şi (ii), cel puţin, un atom de element selectat din grupa constituită din titan, zirconiu, hafniu, siliciu şi bor, şi, opţional, (iii) unul sau câţiva atomi de oxigen; (B) un component al cationilor de elemente selectate din grupa constituită din cobalt, magneziu, mangan, zinc, nichel, cositor, zirconiu, fier, aluminiu şi cupru, raportul cantităţii totale de cationi de acest component la cantitatea totală de anioni de component (A) constituind, cel puţin, 2:5; şi (C) o cantitate suficientă de acid liber, pentru a-i atribui compoziţiei, după diluarea cu apă, un pH în banda de valori cuprinsă între 0,5 şi 5,0 şi, opţional, (D) o compoziţie care va forma o peliculă organică după uscare.
MD96-0309A 1991-08-30 1992-08-12 Procedeu de tratare a metalului cu o compoziţie acidă apoasă care nu conţine crom (VI) MD960309A (ro)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US75270791A 1991-08-30 1991-08-30
PCT/US1992/006469 WO1993005198A1 (en) 1991-08-30 1992-08-12 Process for treating metal with aqueous acidic composition that is substantially free from chromium (vi)

Publications (1)

Publication Number Publication Date
MD960309A true MD960309A (ro) 1998-06-30

Family

ID=25027457

Family Applications (1)

Application Number Title Priority Date Filing Date
MD96-0309A MD960309A (ro) 1991-08-30 1992-08-12 Procedeu de tratare a metalului cu o compoziţie acidă apoasă care nu conţine crom (VI)

Country Status (12)

Country Link
US (2) US5342456A (ro)
EP (2) EP0600982A1 (ro)
JP (1) JP3280080B2 (ro)
KR (1) KR100292447B1 (ro)
AU (1) AU662758B2 (ro)
BR (1) BR9206419A (ro)
CA (1) CA2113453C (ro)
MD (1) MD960309A (ro)
MX (1) MX9204924A (ro)
SG (1) SG54222A1 (ro)
TW (1) TW224491B (ro)
WO (1) WO1993005198A1 (ro)

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Also Published As

Publication number Publication date
CA2113453C (en) 2003-04-29
EP0825280A2 (en) 1998-02-25
TW224491B (ro) 1994-06-01
US5342456A (en) 1994-08-30
JP3280080B2 (ja) 2002-04-30
BR9206419A (pt) 1995-04-04
SG54222A1 (en) 1998-11-16
CA2113453A1 (en) 1993-03-18
EP0825280A3 (en) 1998-04-01
US5449414A (en) 1995-09-12
JPH05195244A (ja) 1993-08-03
AU662758B2 (en) 1995-09-14
KR100292447B1 (ko) 2001-06-01
WO1993005198A1 (en) 1993-03-18
MX9204924A (es) 1993-03-01
AU2427692A (en) 1993-04-05
EP0600982A1 (en) 1994-06-15

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