GB851739A - Improvements in or relating to chemical polishing compositions - Google Patents
Improvements in or relating to chemical polishing compositionsInfo
- Publication number
- GB851739A GB851739A GB2632457A GB2632457A GB851739A GB 851739 A GB851739 A GB 851739A GB 2632457 A GB2632457 A GB 2632457A GB 2632457 A GB2632457 A GB 2632457A GB 851739 A GB851739 A GB 851739A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acid
- chemical polishing
- relating
- polishing compositions
- copper
- 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
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F3/00—Brightening metals by chemical means
- C23F3/04—Heavy metals
- C23F3/06—Heavy metals with acidic solutions
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- ing And Chemical Polishing (AREA)
Abstract
A solution for the chemical polishing of copper and its alloys comprises, by volume 5-40% arsenic acid of a concentration of 80% by weight in water, 2-50% nitric acid of specific gravity 1.5, and 10-75% phosphoric acid of specific gravity 1.75. Additional water up to 20% by volume and/or glacial acetic acid may also be present. A preferred solution contains 10-30% arsenic acid, 10-15% nitric acid, 20-30% phosphoric acid, 30-50% acetic acid, and 0-10% additional water. The polishing of copper, nickel-silver, 70/30 brass, and gilding metal (Cu 80-90%, Zn 20-10%) is exemplified. Specification 738,744 and U.S.A. Specification 2,446,060 are referred to.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2632457A GB851739A (en) | 1957-08-20 | 1957-08-20 | Improvements in or relating to chemical polishing compositions |
| CH6253358A CH393028A (en) | 1957-08-20 | 1958-08-04 | Process for the chemical polishing of articles of copper or its alloys, solution for carrying out this process and article polished by this process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2632457A GB851739A (en) | 1957-08-20 | 1957-08-20 | Improvements in or relating to chemical polishing compositions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB851739A true GB851739A (en) | 1960-10-19 |
Family
ID=10241867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2632457A Expired GB851739A (en) | 1957-08-20 | 1957-08-20 | Improvements in or relating to chemical polishing compositions |
Country Status (2)
| Country | Link |
|---|---|
| CH (1) | CH393028A (en) |
| GB (1) | GB851739A (en) |
-
1957
- 1957-08-20 GB GB2632457A patent/GB851739A/en not_active Expired
-
1958
- 1958-08-04 CH CH6253358A patent/CH393028A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CH393028A (en) | 1965-05-31 |
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