GB843426A - Surface treatment of articles composed of an aluminium base alloy - Google Patents
Surface treatment of articles composed of an aluminium base alloyInfo
- Publication number
- GB843426A GB843426A GB29007/58A GB2900758A GB843426A GB 843426 A GB843426 A GB 843426A GB 29007/58 A GB29007/58 A GB 29007/58A GB 2900758 A GB2900758 A GB 2900758A GB 843426 A GB843426 A GB 843426A
- Authority
- GB
- United Kingdom
- Prior art keywords
- article
- temperature
- base alloy
- fluoroborate
- ammonium tetrafluoroborate
- 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
- C23C26/00—Coating not provided for in groups C23C2/00 - C23C24/00
- C23C26/02—Coating not provided for in groups C23C2/00 - C23C24/00 applying molten material to the substrate
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
- C22F1/047—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with magnesium as the next major constituent
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/68—Temporary coatings or embedding materials applied before or during heat treatment
- C21D1/70—Temporary coatings or embedding materials applied before or during heat treatment while heating or quenching
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical Treatment Of Metals (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
A finished or semi-finished article composed of an Al-base alloy containing 0.1-15% Mg is coated with an organic ammonium fluoroborate which yields boron trifluoride when heated to a temperature between 400 DEG F. and 750 DEG F., and heated to a temperature between 400 DEG and 750 DEG F. for a time sufficiently long to cause disappearance of the fluoroborate and the formation of a protectve film on the surface of the article. The Al-base alloy may also contain one or more of Cu 0.1-12%, Si 0.25-14%, Zn 0.1-20% and Mn 0.1-3%, together with not more than 3% in all of one or more of Cr 0.05-0.5%, Ti 0.01-0.5%, Ni 0.25-2.5%, B 0.01-0.5%, Be 0.002-2%, Mo 0.1-0.5%, Zr 0.1-0.5%, Ta 0.1-0.5%, Nb 0.1-0.5% and Co 0.1-0.5%: specific examples are given of the alloy. The fluoroborate may be di-n-butyl ammonium tetrafluoroborate, n-octadecyl N,N,N-trimethyl ammonium tetrafluoroborate or di-n-amyl ammonium tetrafluoroborate, and may be applied to the article in solution (aqueous or alcoholic, with wetting or other surface-active agents if desired), or in a molten state. The article may subsequently be de-gassed by heating at a temperature above 750 DEG F. but below the temperature of incipient fusion. Specification 494,274 and U.S.A. Specification 2,379,467 is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US843426XA | 1957-09-18 | 1957-09-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB843426A true GB843426A (en) | 1960-08-04 |
Family
ID=22184342
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB29007/58A Expired GB843426A (en) | 1957-09-18 | 1958-09-10 | Surface treatment of articles composed of an aluminium base alloy |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB843426A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1281781A1 (en) * | 2001-07-30 | 2003-02-05 | Alcoa Inc. | Alloy composition for making blister-free aluminum forgings and parts made therefrom |
-
1958
- 1958-09-10 GB GB29007/58A patent/GB843426A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1281781A1 (en) * | 2001-07-30 | 2003-02-05 | Alcoa Inc. | Alloy composition for making blister-free aluminum forgings and parts made therefrom |
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