GB395491A - A process for preventing the tarnishing of the surface of silver and its alloys - Google Patents
A process for preventing the tarnishing of the surface of silver and its alloysInfo
- Publication number
- GB395491A GB395491A GB14541/32A GB1454132A GB395491A GB 395491 A GB395491 A GB 395491A GB 14541/32 A GB14541/32 A GB 14541/32A GB 1454132 A GB1454132 A GB 1454132A GB 395491 A GB395491 A GB 395491A
- Authority
- GB
- United Kingdom
- Prior art keywords
- silver
- alloys
- tarnishing
- preventing
- 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
- C23C22/24—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
-
- 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
-
- 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
- C23C22/48—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 not containing phosphates, hexavalent chromium compounds, fluorides or complex fluorides, molybdates, tungstates, vanadates or oxalates
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)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
- Electroplating Methods And Accessories (AREA)
Abstract
An invisible protective coating is formed on the surface of silver or silver alloys by treating with a solution containing chromic acid. Cuprammonium chloride, a persulphate, or both of these substances may be added to the solution. The metal is preferably first degreased and then immersed in the solution, washed, and dried.
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE395491X | 1931-05-23 | ||
DE737433X | 1931-05-23 | ||
DE1995225X | 1931-05-23 | ||
DEV26875D DE572342C (en) | 1931-05-23 | 1931-05-24 | Process for preventing tarnishing of surfaces made of silver or a silver alloy |
DEV27314D DE601408C (en) | 1931-05-23 | 1931-09-17 | Process for preventing tarnishing of objects made of nickel, copper and alloys of these metals |
Publications (1)
Publication Number | Publication Date |
---|---|
GB395491A true GB395491A (en) | 1933-07-20 |
Family
ID=61187870
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB14541/32A Expired GB395491A (en) | 1931-05-23 | 1932-05-23 | A process for preventing the tarnishing of the surface of silver and its alloys |
Country Status (4)
Country | Link |
---|---|
US (1) | US1995225A (en) |
DE (2) | DE572342C (en) |
FR (1) | FR737433A (en) |
GB (1) | GB395491A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4135801A1 (en) * | 1990-11-03 | 1992-05-07 | Glaverbel | REFLECTIVE PRODUCTS AND METHOD FOR THE PRODUCTION THEREOF |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2548419A (en) * | 1945-08-23 | 1951-04-10 | Poor & Co | Method for production of lustrous zinc |
NL102025C (en) * | 1955-05-14 | |||
US5219617A (en) * | 1989-09-19 | 1993-06-15 | Michigan Chrome And Chemical Company | Corrosion resistant coated articles and process for making same |
US20150184307A1 (en) * | 2012-07-31 | 2015-07-02 | Daiwa Fine Chemicals Co., Ltd. (Laboratory) | Silver electroplating solution |
-
1931
- 1931-05-24 DE DEV26875D patent/DE572342C/en not_active Expired
- 1931-09-17 DE DEV27314D patent/DE601408C/en not_active Expired
-
1932
- 1932-05-20 US US612646A patent/US1995225A/en not_active Expired - Lifetime
- 1932-05-23 GB GB14541/32A patent/GB395491A/en not_active Expired
- 1932-05-23 FR FR737433D patent/FR737433A/en not_active Expired
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4135801A1 (en) * | 1990-11-03 | 1992-05-07 | Glaverbel | REFLECTIVE PRODUCTS AND METHOD FOR THE PRODUCTION THEREOF |
GB2254339A (en) * | 1990-11-03 | 1992-10-07 | Glaverbel | Treating silver reflective coatings with a solution containing ions selected from cr, v, ti, fe, in, cu and al |
US5296297A (en) * | 1990-11-03 | 1994-03-22 | Glaverbel | Reflective articles having improved corrosion resistance |
GB2254339B (en) * | 1990-11-03 | 1994-09-07 | Glaverbel | Reflective articles and methods of manufacturing same |
US5374451A (en) * | 1990-11-03 | 1994-12-20 | Glaverbel | Reflective articles and methods of manufacturing same |
DE4135801C2 (en) * | 1990-11-03 | 2000-07-06 | Glaverbel | Process for producing a glass substrate with at least one reflective metal coating with improved resistance to corrosion and its use |
Also Published As
Publication number | Publication date |
---|---|
DE601408C (en) | 1934-08-15 |
DE572342C (en) | 1933-03-14 |
US1995225A (en) | 1935-03-19 |
FR737433A (en) | 1932-12-12 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB366813A (en) | Improvements in or relating to electrolytes and amalgamating baths for the production of metallic coatings | |
GB581639A (en) | Improvements in the treatment of cast iron for the reception of tin coatings thereon | |
GB590852A (en) | Improvements in and relating to the treatment of phosphate-coated metal surfaces | |
GB395491A (en) | A process for preventing the tarnishing of the surface of silver and its alloys | |
GB381402A (en) | Improvements in or relating to the surface treatment of aluminium or aluminium alloys | |
GB482689A (en) | Improvements in and relating to the protection of magnesium rich alloys | |
GB615110A (en) | Improvements in and relating to cleaning and electro-plating processes | |
GB614671A (en) | Improvements in or relating to the formation of oxide coatings on aluminium surfaces | |
GB414966A (en) | Anodic coating of zinc base metals | |
GB313901A (en) | Improvements in processes for producing coatings on metal articles | |
GB314769A (en) | An improved process for coating metals | |
GB406988A (en) | Improvements in or relating to the treatment of the surfaces of aluminium or aluminium alloy articles | |
GB606240A (en) | Improvements in the treatment of the surfaces of articles made of aluminium or its alloys | |
GB419469A (en) | Improvements in and relating to the coating of objects made of zinc or covered with zinc | |
GB489211A (en) | Improved method of bright-pickling articles of copper-zinc alloys | |
GB309380A (en) | ||
GB459263A (en) | Process for the anodic coating of aluminium and aluminium alloys and electrolytes therefor | |
GB482958A (en) | Improvements in or relating to the electrodeposition of zinc | |
GB877385A (en) | Method of chromium plating aluminium or aluminium alloy | |
GB830258A (en) | Galvanizing process | |
GB272610A (en) | Improvements in and relating to the treatment of metal surfaces | |
GB325540A (en) | Method of applying zinc coatings to iron articles | |
GB595596A (en) | Improvements in and relating to the blackening of copper and copper alloy surfaces | |
GB488687A (en) | Providing cast-iron articles with a cell-like surface | |
GB380882A (en) | Improvements in or relating to hardening alloy steels |