DE182421C - - Google Patents
Info
- Publication number
- DE182421C DE182421C DENDAT182421D DE182421DA DE182421C DE 182421 C DE182421 C DE 182421C DE NDAT182421 D DENDAT182421 D DE NDAT182421D DE 182421D A DE182421D A DE 182421DA DE 182421 C DE182421 C DE 182421C
- Authority
- DE
- Germany
- Prior art keywords
- metal
- aluminum
- precipitates
- oxide layer
- annealing
- 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.)
- Active
Links
- 229910052782 aluminium Inorganic materials 0.000 claims description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminum Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 229910001510 metal chloride Inorganic materials 0.000 claims description 3
- 150000002736 metal compounds Chemical class 0.000 claims description 3
- 239000002244 precipitate Substances 0.000 claims description 3
- 238000000137 annealing Methods 0.000 claims description 2
- 238000004040 coloring Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 239000004922 lacquer Substances 0.000 claims 1
- 230000001590 oxidative Effects 0.000 claims 1
- 239000003973 paint Substances 0.000 claims 1
- 241000189705 Dunedin group Species 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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
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)
- Electroplating Methods And Accessories (AREA)
Description
3tafaeziic§an &alcul'anil's. 3tafaeziic§an & a lcul'anil's.
fepuqt bet fepuqt bet
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
PATENTSCHRIFTPATENT LETTERING
- Ja 182421 KLASSE 48 d. GRUPPE- Yes 182421 CLASS 48 d. GROUP
Zusatz zum Patente 163545 vom 9. August 1904.Addendum to patent 163545 from August 9, 1904.
Patentiert im Deutschen Reiche vom 7. Februar 1906 ab. Längste Dauer: 8. August 1919.Patented in the German Empire on February 7, 1906. Longest duration: August 8, 1919.
Bei der technischen Ausbildung des durch Patent 163545 geschützten Verfahrens wurde gefunden, daß gewisse Metallverbindungen in Lösungen, insbesondere Metallchloride, wenn sie auf die Oberfläche des Aluminiums gebracht wurden, auch ohne Vorbehandlung desselben reduziert wurden und einen farbigen Überzug bildeten, wobei zugleich eine Oxydation des Aluminiums eingeleitet wurde.During the technical training of the process protected by patent 163545 found that certain metal compounds in solutions, especially metal chlorides, when they have been applied to the surface of the aluminum, even without pretreatment of the same were reduced and formed a colored coating, at the same time an oxidation of aluminum was introduced.
Vorliegende Erfindung' macht von dieser Beobachtung Gebrauch, indem durch die genannten Metallverbindungen das Aluminium oberflächlich zur Oxydation gebracht wird dadurch, daß man dieselben aufstreicht undThe present invention makes use of this observation by passing through the aforesaid Metal compounds the aluminum is superficially oxidized by spreading it on and
.15 einige Zeit wirken läßt, bis sich ein farbiger Niederschlag gebildet hat. Auf die entstandene oder entstehende Oxydschicht werden dann, nachdem sie fixiert ist, z. B. durch Glühen, weitere leicht reduzierbare, färbende Substanzen aufgebracht. Auf letztere können, falls die Reduktion bis zum reinen Metall durchgeführt wird, auch auf galvanischem Wege weitere Metallschichten niedergeschlagen werden..15 Let it act for some time until a colored precipitate has formed. On the resulting or resulting oxide layer are then, after it is fixed, z. B. by annealing, more easily reducible, coloring Substances applied. The latter can, if the reduction to pure metal is carried out, further metal layers are also deposited by electroplating will.
Da diese galvanischen Niederschläge nicht auf dem blanken Metall haften, sondern auf der von einem zweiten Metall überzogenen Oxydschicht, so fällt die große Schwierigkeit weg, das Aluminium metallisch blank zu machen, wie dies z. B. auch schon durch Lösung der immer vorhandenen sehr dünnen Oxydschicht des Aluminiums durch geschmolzene Metallchloride bei hoher Temperatur versucht worden ist.Because these galvanic deposits do not adhere to the bare metal, but to the oxide layer covered by a second metal, the great difficulty falls way to make the aluminum metallic bright, as z. B. by solving the very thin ones that are always present Oxide layer of aluminum from molten metal chlorides at high temperature has been tried.
3535
Claims (1)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE182421C true DE182421C (en) |
Family
ID=446522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT182421D Active DE182421C (en) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE182421C (en) |
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0
- DE DENDAT182421D patent/DE182421C/de active Active
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