GB1358216A - Passivation of zinc - Google Patents
Passivation of zincInfo
- Publication number
- GB1358216A GB1358216A GB3818472A GB3818472A GB1358216A GB 1358216 A GB1358216 A GB 1358216A GB 3818472 A GB3818472 A GB 3818472A GB 3818472 A GB3818472 A GB 3818472A GB 1358216 A GB1358216 A GB 1358216A
- Authority
- GB
- United Kingdom
- Prior art keywords
- zinc
- compound
- trivalent
- plus
- passivation
- 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
Links
- 239000011701 zinc Substances 0.000 title abstract 6
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 title abstract 4
- 229910052725 zinc Inorganic materials 0.000 title abstract 4
- 238000002161 passivation Methods 0.000 title abstract 2
- 150000001875 compounds Chemical class 0.000 abstract 4
- 229910052793 cadmium Inorganic materials 0.000 abstract 2
- 229910002651 NO3 Inorganic materials 0.000 abstract 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 abstract 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 abstract 1
- 229960002645 boric acid Drugs 0.000 abstract 1
- 235000010338 boric acid Nutrition 0.000 abstract 1
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical class [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 abstract 1
- 238000007598 dipping method Methods 0.000 abstract 1
- 150000002823 nitrates Chemical class 0.000 abstract 1
- 238000005507 spraying Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
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
- C23C22/24—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
- C23C22/30—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 containing also trivalent chromium
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
1358216 Passivation of zinc INSTITUT KHIMII I KHIMICHESKOI TEKHNOLOGH AKADEMII NAUK LITOVSKOI SSR 16 Aug 1972 [5 Oct 1971] 38184/72 Heading C7U A composition for passivating zinc comprises, in parts by weight, (A) at least one trivalent Cr compound, 5 to 20, calculated as Cr (B) at least one hexavalent Cr compound, 0À1 to 2À0, as Cr (C) at least one nitrate, 10-25, as NO 3 - and (D) at least one B compound, 1À8-6, as B. Suitable compounds are: (A) Cr 2 (SO 4 ) 3 .6H 2 O; K 2 Cr 2 (SO 4 ) 4 .2H 2 O; Cr 2 (SO 4 ) 3 .6H 2 O plus K 2 Cr 2 (SO 4 ) 4 .24H 2 O; Cr(NO 3 ) 3 .9H 2 O; or Cr(NO 3 ) 3 .9H 2 O plus Cr 2 (SO 4 ) 3 .6H 2 O (B) CrO 3 and/or chromates and/or dichromates of NH 4 , Be, K, Cd, Li, Mg, Na and/or Zn (C) nitrates of NH 4 , Be, K, Cd, Li, Mg, Na and/or Zn and (D) orthoboric acid, Mg orthoborate, polyborates of NH 4 , Be, K, Li, Mg and/or Na. The composition may be dissolved in water to give a trivalent Cr content of 3-6 g/l and a pH of 2À1 0À3 (adjusted with H 2 SO 4 ) and zinc articles are passivated by dipping or spraying at 15-35C for 10-20 seconds.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU7101702264A SU427614A1 (en) | 1971-10-05 | 1971-10-05 | Composition for zing passivation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1358216A true GB1358216A (en) | 1974-07-03 |
Family
ID=20489398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3818472A Expired GB1358216A (en) | 1971-10-05 | 1972-08-16 | Passivation of zinc |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US3880772A (en) |
| CS (1) | CS171853B1 (en) |
| DD (1) | DD99182A1 (en) |
| DE (1) | DE2244489B2 (en) |
| FR (1) | FR2156579B1 (en) |
| GB (1) | GB1358216A (en) |
| HU (1) | HU164916B (en) |
| IT (1) | IT965190B (en) |
| PL (1) | PL84468B1 (en) |
| SU (1) | SU427614A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2144773A (en) * | 1983-07-19 | 1985-03-13 | Omi Int Corp | Non-peroxide trivalent chromium passivation |
| GB2255783A (en) * | 1991-05-13 | 1992-11-18 | Enthone Omi Inc | Chromate conversion coatings containing an inorganic silicate; silicate compositions |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1228000A (en) * | 1981-04-16 | 1987-10-13 | David E. Crotty | Chromium appearance passivate solution and process |
| JPS62107096A (en) * | 1985-11-01 | 1987-05-18 | Nippon Parkerizing Co Ltd | Surface treatment of galvanized steel sheet |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3121032A (en) * | 1960-09-27 | 1964-02-11 | M & T Chemicals Inc | Process for applying a protective transparent coating to zinc and cadmium and composition therefor |
| US3404046A (en) * | 1964-09-25 | 1968-10-01 | Hooker Chemical Corp | Chromating of zinc and aluminum and composition therefor |
| AU412989B2 (en) * | 1967-04-20 | 1971-05-04 | John Lysaght (Australia) Limited | Composition and process for inhibiting corrosion of zinc surfaces |
| DE1769582C3 (en) * | 1967-06-14 | 1979-12-13 | British Chrome & Chemicals Ltd., Stockton-On-Tees (Grossbritannien) | Surface treatment agents for metals, processes for their production and their use for producing corrosion-resistant and electrically resistant coatings |
| US3620777A (en) * | 1968-07-24 | 1971-11-16 | Hooker Chemical Corp | Chromate chemical coating solution for zinc alloy |
| US3582368A (en) * | 1968-12-30 | 1971-06-01 | Borden Inc | Corrosion-inhibiting composition |
-
1971
- 1971-10-05 SU SU7101702264A patent/SU427614A1/en active
-
1972
- 1972-08-08 US US278867A patent/US3880772A/en not_active Expired - Lifetime
- 1972-08-16 GB GB3818472A patent/GB1358216A/en not_active Expired
- 1972-09-02 IT IT52516/72A patent/IT965190B/en active
- 1972-09-05 FR FR7231458A patent/FR2156579B1/fr not_active Expired
- 1972-09-06 DD DD165484A patent/DD99182A1/xx unknown
- 1972-09-11 DE DE2244489A patent/DE2244489B2/en not_active Withdrawn
- 1972-09-15 CS CS6328A patent/CS171853B1/cs unknown
- 1972-10-03 HU HUII117A patent/HU164916B/hu unknown
- 1972-10-03 PL PL1972158054A patent/PL84468B1/pl unknown
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2144773A (en) * | 1983-07-19 | 1985-03-13 | Omi Int Corp | Non-peroxide trivalent chromium passivation |
| GB2255783A (en) * | 1991-05-13 | 1992-11-18 | Enthone Omi Inc | Chromate conversion coatings containing an inorganic silicate; silicate compositions |
| GB2255783B (en) * | 1991-05-13 | 1995-05-10 | Enthone Omi Inc | Process for forming chromate conversion coatings |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2156579B1 (en) | 1976-08-13 |
| IT965190B (en) | 1974-01-31 |
| DE2244489B2 (en) | 1979-11-15 |
| HU164916B (en) | 1974-05-28 |
| PL84468B1 (en) | 1976-04-30 |
| DD99182A1 (en) | 1973-07-20 |
| FR2156579A1 (en) | 1973-06-01 |
| US3880772A (en) | 1975-04-29 |
| CS171853B1 (en) | 1976-11-29 |
| SU427614A1 (en) | 1977-11-05 |
| DE2244489A1 (en) | 1973-04-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |