GB1319766A - Phosphating process - Google Patents
Phosphating processInfo
- Publication number
- GB1319766A GB1319766A GB1319766DA GB1319766A GB 1319766 A GB1319766 A GB 1319766A GB 1319766D A GB1319766D A GB 1319766DA GB 1319766 A GB1319766 A GB 1319766A
- Authority
- GB
- United Kingdom
- Prior art keywords
- nitrite
- nitrate
- oct
- nano
- solution
- 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
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
- C23C22/14—Orthophosphates containing zinc cations containing also chlorate 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)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Chemical Treatment Of Metals (AREA)
Abstract
1319766 Phosphatising IMPERIAL CHEMICAL INDUSTRIES 7 Oct 1970 [23 Oct 1969] 51925/69 Headings C7U In phosphatisation of a metallic substrate by contact with an acidic zinc phosphate solution containing chlorate, there is maintained in the solution, as coating proceeds, a nitrite concentration of at least 0À003 wt% and a nitrate concentration of at least 0À5 wt% (calculated as NO 2 and NO 3 respectively) by addition of nitrite and nitrate. Preferred amounts of chlorate, nitrite and nitrate are 0À01 - 1% (as CIO 3 ), 0À003 - 0À05% and 0À5 - 2% respectively; nitrate may be added as NaNO 3 , NH 4 NO 3 , or Zn (NO 3 ) 2 and nitrite as NaNO 2 or NH 4 NO 2 . The solution may contain Ni ions when used on galvanized steel; it is applied to ferrous metal. such as steel by dipping, or preferably, spraying, at 100 - 130‹C.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB5192569 | 1969-10-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1319766A true GB1319766A (en) | 1973-06-06 |
Family
ID=10461956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1319766D Expired GB1319766A (en) | 1969-10-23 | 1969-10-23 | Phosphating process |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1319766A (en) |
-
1969
- 1969-10-23 GB GB1319766D patent/GB1319766A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |