GB1239788A - Improvements in or relating to aluminium base alloys and a colour anodizing process - Google Patents
Improvements in or relating to aluminium base alloys and a colour anodizing processInfo
- Publication number
- GB1239788A GB1239788A GB5042368A GB5042368A GB1239788A GB 1239788 A GB1239788 A GB 1239788A GB 5042368 A GB5042368 A GB 5042368A GB 5042368 A GB5042368 A GB 5042368A GB 1239788 A GB1239788 A GB 1239788A
- Authority
- GB
- United Kingdom
- Prior art keywords
- anodizing
- etched
- alloy
- acid
- cast
- 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
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
- C22C21/08—Alloys based on aluminium with magnesium as the next major constituent with silicon
Landscapes
- 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
1,239,788. Aluminium alloy; anodizing. KAISER ALUMINUM & CHEMICAL CORP. Oct. 23, 1968 [Nov. 1967], No.50423/68. Headings C7A and C7B. An aluminium base alloy comprises:- Cr 0À25-0À8% Mg 0À25-0À6% and Si 3À2-3À8% the balance, apart from normal amounts of impurities and incidental elements, being Al. The other elements present may include 0À01-0À05% Ti or B as well as a residual amount of Na from the "modification" of the alloys. The alloy is suitable for casting and for colour anodizing in the as cast condition as follows: - (a) The cast alloy is etched in an oxidizing acid (e.g. HNO 3 + HF) to avoid the production of a grey cast on anodizing, and (b) The etched body is anodized in an electrolyte which may contain H 2 SO 4 , or a source of sulphate ions plus sulphosalicylic acid, sulphophthalic acid or sulphoresorcinal, or oxalic acid. If a grey or black coating is required the body must be heat-treated above 300‹ F, for at least 2 hours and then cooled prior to anodizing (preferably before the etching step). The heating may be a solution treatment above 700‹ F. which may be followed by quenching and ageing. Machined surfaces do not require to be etched to produce a haze free anodic coating.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US68102767A | 1967-11-06 | 1967-11-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1239788A true GB1239788A (en) | 1971-07-21 |
Family
ID=24733496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5042368A Expired GB1239788A (en) | 1967-11-06 | 1968-10-23 | Improvements in or relating to aluminium base alloys and a colour anodizing process |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE1806746A1 (en) |
| FR (1) | FR1590846A (en) |
| GB (1) | GB1239788A (en) |
| SE (1) | SE337516B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114316693A (en) * | 2021-12-30 | 2022-04-12 | 王永勤 | Preparation method of super-hydrophobic coating |
-
1968
- 1968-10-23 GB GB5042368A patent/GB1239788A/en not_active Expired
- 1968-11-02 DE DE19681806746 patent/DE1806746A1/en active Pending
- 1968-11-04 SE SE1494068A patent/SE337516B/xx unknown
- 1968-11-06 FR FR1590846D patent/FR1590846A/fr not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114316693A (en) * | 2021-12-30 | 2022-04-12 | 王永勤 | Preparation method of super-hydrophobic coating |
| CN114316693B (en) * | 2021-12-30 | 2022-10-21 | 佛山市顺德区固得丽涂料有限公司 | Preparation method of super-hydrophobic coating |
Also Published As
| Publication number | Publication date |
|---|---|
| FR1590846A (en) | 1970-04-20 |
| DE1806746A1 (en) | 1969-06-12 |
| SE337516B (en) | 1971-08-09 |
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