DE298207C - - Google Patents
Info
- Publication number
- DE298207C DE298207C DENDAT298207D DE298207DA DE298207C DE 298207 C DE298207 C DE 298207C DE NDAT298207 D DENDAT298207 D DE NDAT298207D DE 298207D A DE298207D A DE 298207DA DE 298207 C DE298207 C DE 298207C
- Authority
- DE
- Germany
- Prior art keywords
- iron
- alkali
- objects
- salts
- immersed
- 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
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 10
- 239000003513 alkali Substances 0.000 claims description 5
- 229910052742 iron Inorganic materials 0.000 claims description 5
- 239000011253 protective coating Substances 0.000 claims description 5
- 239000000155 melt Substances 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 2
- 150000007513 acids Chemical class 0.000 claims description 2
- 150000001447 alkali salts Chemical class 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- KRVSOGSZCMJSLX-UHFFFAOYSA-L Chromic acid Chemical compound O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 claims 2
- 229910001018 Cast iron Inorganic materials 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 claims 1
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- 239000010959 steel Substances 0.000 claims 1
- 229910000460 iron oxide Inorganic materials 0.000 description 3
- 235000013980 iron oxide Nutrition 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- VBMVTYDPPZVILR-UHFFFAOYSA-N iron(2+);oxygen(2-) Chemical class [O-2].[Fe+2] VBMVTYDPPZVILR-UHFFFAOYSA-N 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N oxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 150000001462 antimony Chemical class 0.000 description 1
- -1 antimony salts Chemical class 0.000 description 1
- 229910000423 chromium oxide Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- 159000000014 iron salts Chemical class 0.000 description 1
- 150000002730 mercury Chemical class 0.000 description 1
- 150000002736 metal compounds Chemical class 0.000 description 1
- 229910052752 metalloid Inorganic materials 0.000 description 1
- 150000002738 metalloids Chemical class 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- 150000002826 nitrites Chemical class 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- WGLPBDUCMAPZCE-UHFFFAOYSA-N trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 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
- C23C22/70—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 melts
- C23C22/72—Treatment of iron or alloys based thereon
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)
Description
Taucht man Eisengegenstände in Schmelzen, welche aus sauerstoffabgebenden Alkaliverbindungen der Metalloide (z. B. Alkalinitrate, Alkalinitrite, Alkalipersalze usw.) hergestellt sind, so erhalten sie Schutzüberzüge, welche lediglich aus Eisenoxyduloxyd bestehen. Verwendet man aber Schmelzbäder, in denen gewisse Metallverbindungen gelöst sind, so ist es möglich, gemischt oxydische SchutzüberzügeIf iron objects are immersed in melts, which are made up of oxygen-releasing alkali compounds of metalloids (e.g. alkali nitrates, alkali nitrites, alkali persalts, etc.) are, they receive protective coatings, which consist only of iron oxide. Used But if you have molten baths in which certain metal compounds are dissolved, it is possible to use mixed oxide protective coatings
ίο zu erhalten, welche also neben Eisenoxyden die Oxyde der betreffenden Metalle enthalten.ίο to get, which in addition to iron oxides contain the oxides of the metals in question.
In den üblichen Brünierbeizen, welchen meistIn the usual browning stains, which are mostly
Kupfer- oder Quecksilber-, auch Antimonsalze neben Eisensalzen zugegeben werden, erhaltenCopper or mercury salts, including antimony salts, are added in addition to iron salts
die Eisengegenstände auch Überzüge, an denen Oxyde dieser anderen Metalle mitbeteiligt sind, und man schätzt die so entstandenen Schutzüberzüge eben dieser Zusammensetzung wegen gemeinhin als besonders wirksam ein.the iron objects also coatings in which oxides of these other metals are involved, and the resulting protective coatings are valued for this very composition commonly found to be particularly effective.
Solche gemischt oxydische Schutzüberzüge kann man nach vorliegender Erfindung auch erhalten, wenn man Eisengegenstände in eine aus Alkalisalzen oder Polychromsäuren bestehende Schmelze eintaucht. Der Überzug enthält dann Chromoxyd neben Eisenoxyden. a5 Weil diese Salze beim Schmelzen Sauerstoff leicht abgeben, so dürfen sie nicht überhitzt werden;Such mixed oxide protective coatings can also be obtained according to the present invention if iron objects are immersed in a melt consisting of alkali salts or polychromic acids. The coating then contains chromium oxide in addition to iron oxides. a 5 Because these salts easily give off oxygen when they melt, they must not be overheated;
In diesem Verfahren liegt insofern ein Fortschritt, als dadurch gegenüber der ^tagelang dauernden Beizbrünierung ein solcher Überzug in einigen. Minuten erhalten wird.There is progress in this process in so far as it lasts for days over the previous one permanent browning such a coating in some. Minutes is obtained.
Claims (1)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE298207C true DE298207C (en) |
Family
ID=552433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT298207D Active DE298207C (en) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE298207C (en) |
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0
- DE DENDAT298207D patent/DE298207C/de active Active
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