DE1072050B - - Google Patents
Info
- Publication number
- DE1072050B DE1072050B DENDAT1072050D DE1072050DA DE1072050B DE 1072050 B DE1072050 B DE 1072050B DE NDAT1072050 D DENDAT1072050 D DE NDAT1072050D DE 1072050D A DE1072050D A DE 1072050DA DE 1072050 B DE1072050 B DE 1072050B
- Authority
- DE
- Germany
- Prior art keywords
- tin
- steel
- copper
- iron
- salts
- 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.)
- Pending
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 19
- 229910052718 tin Inorganic materials 0.000 claims description 17
- KRHYYFGTRYWZRS-UHFFFAOYSA-N HF Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims description 16
- ATJFFYVFTNAWJD-UHFFFAOYSA-N tin hydride Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 16
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 229910052742 iron Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 8
- 239000010949 copper Substances 0.000 claims description 8
- 229910000597 tin-copper alloy Inorganic materials 0.000 claims description 8
- 150000002739 metals Chemical class 0.000 claims description 6
- 150000003839 salts Chemical class 0.000 claims description 6
- 239000011780 sodium chloride Substances 0.000 claims description 6
- 230000002378 acidificating Effects 0.000 claims description 5
- XOLBLPGZBRYERU-UHFFFAOYSA-N Tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 claims description 4
- 229910001128 Sn alloy Inorganic materials 0.000 claims description 3
- 150000002500 ions Chemical class 0.000 claims description 3
- 230000003647 oxidation Effects 0.000 claims description 3
- 238000007254 oxidation reaction Methods 0.000 claims description 3
- -1 tin-copper Chemical compound 0.000 claims description 3
- 239000000654 additive Substances 0.000 claims description 2
- 230000000996 additive Effects 0.000 claims description 2
- 229910045601 alloy Inorganic materials 0.000 claims description 2
- 239000000956 alloy Substances 0.000 claims description 2
- REDXJYDRNCIFBQ-UHFFFAOYSA-N aluminium(3+) Chemical class [Al+3] REDXJYDRNCIFBQ-UHFFFAOYSA-N 0.000 claims description 2
- 238000006460 hydrolysis reaction Methods 0.000 claims description 2
- 238000007654 immersion Methods 0.000 claims description 2
- 238000001556 precipitation Methods 0.000 claims description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N HCl Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims 2
- 230000001070 adhesive Effects 0.000 claims 2
- 239000000853 adhesive Substances 0.000 claims 2
- 239000012266 salt solution Substances 0.000 claims 2
- 229910000906 Bronze Inorganic materials 0.000 claims 1
- ARUVKPQLZAKDPS-UHFFFAOYSA-L Copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 claims 1
- YUOWTJMRMWQJDA-UHFFFAOYSA-J Tin(IV) fluoride Chemical compound [F-].[F-].[F-].[F-].[Sn+4] YUOWTJMRMWQJDA-UHFFFAOYSA-J 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 239000010974 bronze Substances 0.000 claims 1
- 239000011248 coating agent Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 claims 1
- 229910000365 copper sulfate Inorganic materials 0.000 claims 1
- 238000005755 formation reaction Methods 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 230000003334 potential Effects 0.000 claims 1
- 239000005060 rubber Substances 0.000 claims 1
- IUTCEZPPWBHGIX-UHFFFAOYSA-N tin(2+) Chemical class [Sn+2] IUTCEZPPWBHGIX-UHFFFAOYSA-N 0.000 claims 1
- OBBXFSIWZVFYJR-UHFFFAOYSA-L tin(2+);sulfate Chemical compound [Sn+2].[O-]S([O-])(=O)=O OBBXFSIWZVFYJR-UHFFFAOYSA-L 0.000 claims 1
- 229910000375 tin(II) sulfate Inorganic materials 0.000 claims 1
- 239000003792 electrolyte Substances 0.000 description 3
- HPGGPRDJHPYFRM-UHFFFAOYSA-J Tin(IV) chloride Chemical class Cl[Sn](Cl)(Cl)Cl HPGGPRDJHPYFRM-UHFFFAOYSA-J 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminum Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 2
- 229910052793 cadmium Inorganic materials 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-M fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N al2o3 Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 150000001661 cadmium Chemical class 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005137 deposition process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 239000006259 organic additive Substances 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N oxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000003638 reducing agent Substances 0.000 description 1
- 238000010517 secondary reaction Methods 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 150000003606 tin compounds Chemical class 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc 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
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/31—Coating with 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)
- Chemically Coating (AREA)
Description
Die Erfindung befaßt sich mit der stromlosen Abscheidung von Zinn oder Zinn-Kupfer-Legierungen auf Eisen und Stahl aus wäßrigen, sauren Bädern. Derartige Überzüge werden als Korrosionsschutz, zu dekorativen Zwecken oder aus sonstigen Gründen auf Eisen und Stahl aufgebracht.The invention is concerned with the electroless deposition of tin or tin-copper alloys on iron and steel from aqueous, acidic baths. Such coatings are used as corrosion protection, too applied to iron and steel for decorative purposes or for other reasons.
Bekanntlich kann man Kupfer mit stärker elektronegativen Metallen, wie z. B. mit Zinn, nur dann abscheiden, wenn ■ man die Ionenkonzentration des Kupfers so weit erniedrigt, daß sich das Potential des Kupfers nach der Seite der unedleren Metalle verschiebt. Der Elektrolyt besitzt daher immer eine höhere Konzentration an. Zinnsalzen. Für die Höhe der Gesamtauflage ist bei der Abscheidung, einer Zinn-Kupfer-Legierung- die Kupferkonzentration: des Bades maßgebend, da trotz eines in der Lösung vor^ handenen hohen Verhältnisses von Zinn zu Kupfer der Niederschlag immer mehr Kupfer als Zinn enthält. Die stromlose Abscheidung des Zinns aus einem Zinn-Kupfer-Bad ist nur möglich, wenn das Zinn als zweiwertiges lon vorliegt. Die zweiwertigen Zinnverbindungen sind aber starke Reduktionsmittel, d. h., sie besitzen ein großes Bestreben, in den vierwertigen Zustand überzugehen. Diese Oxydation wird schon durch den Luftsauerstoff hervorgerufen und durch Licht. Wärme und weitere Einflüsse gefördert. Außerdem werden die Zinnsalze bei geringen Säurekonzentrationen hydrolytisch gespalten. Durch diese Nebenreaktionen der Aufoxydation und Hydrolyse entsteht als Reaktionsprodukt Zinnsäure, die ausfällt, so daß in untragbarer Weise große Zinnmengen für den eigentlichen Abscheidungsprozeß im Bad laufend verlorengehen. Der Zinngehalt der abgeschiedenen Legierung beträgt daher höchstens 5 Gewichtsprozent. Die ausgefallene Zinnsäure, die teilweise kolloidaler Natur ist, behindert zudem die weitere Abscheidung, so daß das Bad nach kurzer Zeit unbrauchbar wird. Auch saure Elektrolyt^ in denen Kieselfluorwasserstoffsäure vorhanden ist, verursachen bei Zupfer-Zinn-Bädern, insbesondere bei höheren Temperaturen, durch Ausscheidung von Siliziumoxyd und Zinnsäure unbrauchbare Überzüge u»d führen zu einer verminderten Lebensdauer des Elektrolyten. Schließlich sind bei den bisher bekannten Verfahren infolge der beschriebenen Nachteile auch sehr lange Tauchzeiten, die je nach den Konzentrationsverhältnissen Zinn—Kupfer zwischen 5 und 20 Minuten liegen, erforderlich, so daß diese Verfahren für Durchlaufverfahren mit relativ hohen Geschwindigkeiten, wie sie v.. B. bei der Behandlung von Drähten oder Bändern üblich sind, ungeeignet sind.As is well known, you can use copper with more electronegative metals, such as. B. with tin, only deposit if ■ the ion concentration of the copper is lowered so far that the potential of the copper shifts to the side of the less noble metals. The electrolyte therefore always has a higher concentration. Tin salts. The copper concentration of the bath is decisive for the amount of the total layer when a tin-copper alloy is deposited, since despite a high ratio of tin to copper in the solution, the deposit always contains more copper than tin. The electroless deposition of tin from a tin-copper bath is only possible if the tin is present as a divalent ion. The divalent tin compounds, however, are strong reducing agents, ie they tend to change into the tetravalent state. This oxidation is caused by the oxygen in the air and by light. Heat and other influences promoted. In addition, the tin salts are hydrolytically split at low acid concentrations. These secondary reactions of oxidation and hydrolysis give rise to stannic acid as a reaction product, which precipitates, so that unacceptably large amounts of tin are continuously lost for the actual deposition process in the bath. The tin content of the deposited alloy is therefore at most 5 percent by weight. The precipitated stannic acid, which is partly colloidal in nature, also hinders further deposition, so that the bath becomes unusable after a short time. Even acidic electrolytes, in which hydrofluoric acid is present, cause coatings in Zupfer-tin baths, especially at higher temperatures, due to the precipitation of silicon oxide and stannic acid, and lead to a reduced service life of the electrolyte. Finally, with the hitherto known processes due to the above-described disadvantages also very long immersion times, which are, depending on the concentration ratios of tin-copper is between 5 and 20 minutes, is required, so that these methods for continuous process at relatively high speeds as they v .. B . are common in the treatment of wires or ribbons, are unsuitable.
Es ist bereits bekannt, zur stromlosen Abscheidung von Zinn auf Aluminium oder Aluminiumlegierungen das Zinnbad mit einem Gehalt an Flußsäure bzw. deren Verfahren zur stromlosen Abscheidung von Zinn oder Zinn-Kupfer-Legierungen auf Eisen und StahlIt is already known for the electroless deposition of tin on aluminum or aluminum alloys the tin bath with a content of hydrofluoric acid or its method for electroless deposition from tin or tin-copper alloys to iron and steel
Anmelder:Applicant:
Feiten & Guillgaume CarIswerk Eisen und Stahl Aktiengesellschaft, Köln-Mülheim, Schanzenstr. 24/28Feiten & Guillgaume CarIswerk Eisen und Stahl Aktiengesellschaft, Cologne-Mülheim, Schanzenstr. 24/28
Dipl.-Chem. Josef Delille, Köln-Mülheim, ist als Erfinder genannt wordenDipl.-Chem. Josef Delille, Cologne-Mülheim, has been named as the inventor
Salzen zu versehen. Abgesehen davon, daß bei der Abscheidung von Zinn auf Aluminium ganz andere Verhältnisse vorliegen als bei der Abscheidung von Zinn auf Eisen, dient der Zusatz von Flußsäure bzw. deren Salzen bei dem bekannten Verfahren lediglich zur Beseitigung des auf dem Aluminium vorhandenen Oxydfilms. Außerdem benötigt dieses Verfahren, um überhaupt zu brauchbaren Überzügen zu gelangen, Zusatzstoffe organischer Natur.To add salts. Apart from the fact that the deposition of tin on aluminum is completely different Conditions exist than in the deposition of tin on iron, the addition of hydrofluoric acid or their salts in the known method only to remove what is present on the aluminum Oxide films. In addition, this process requires, in order to achieve usable coatings at all, Organic additives.
Ferner ist die Herstellung von Cadmiumüberzügen auf Metallen bekannt, wobei man die Metalle mit einer Lösung eines Cadmiumsalzes und eines Fluorids zusammenbringt und das Cadmium durch chemische Umsetzung mit dem Grundmetall oder eines eigens für diesen Zweck gemachten Zusatzes in Gestalt von feinverteilten Metallen, wie Zink, ausscheidet. Hierbei handelt es sich jedoch nicht um eine wäßrige Lösung. Der- Zusatz des Fluorids soll dabei die Wirkung des notwendigen Flußmittels bei der Beseitigung der Oxyde von der Oberfläche des zu überziehenden Metalls verbessern.Furthermore, the production of cadmium coatings on metals is known, whereby the metals are brought together with a solution of a cadmium salt and a fluoride and the cadmium is precipitated by chemical reaction with the base metal or an additive made especially for this purpose in the form of finely divided metals such as zinc . However, this is not an aqueous solution. The - addition of fluoride is intended to improve the the necessary flux in the removal of oxides from the surface to be coated metal effect.
Die Erfindung stellt sich auf Aufgabe, die eingangs geschilderten Schwierigkeiten bei der stromlosen Abvoti Zinn oder Zinn-Kupfer-LegierungenThe invention is based on the task of solving the difficulties outlined at the beginning with the currentless Abvoti Tin or tin-copper alloys
scheidungdivorce
909 690/337909 690/337
Claims (1)
USA.-Patentschrift Nr. 2 580 773;
Chemisches Zentralblatt, 1941/11, S. 3243, Referat über die schwedische Patentschrift Nr. 101 532;
Machu, »Moderne Galvano-Technik«, 1954, S. 430.Considered publications:
U.S. Patent No. 2,580,773;
Chemisches Zentralblatt, 1941/11, p. 3243, report on Swedish patent specification No. 101 532;
Machu, "Moderne Galvano-Technik", 1954, p. 430.
Publications (1)
Publication Number | Publication Date |
---|---|
DE1072050B true DE1072050B (en) | 1959-12-24 |
Family
ID=596594
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT1072050D Pending DE1072050B (en) |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE1072050B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1248419B (en) * | 1964-08-17 | 1967-08-24 | Collardin Gmbh Gerhard | Immersion bath for the electroless deposition of copper-tin layers |
DE1274417B (en) * | 1962-09-07 | 1968-08-01 | Metallgesellschaft Ag | Solution for the electroless deposition of tin-copper alloy coatings on metal surfaces |
-
0
- DE DENDAT1072050D patent/DE1072050B/de active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1274417B (en) * | 1962-09-07 | 1968-08-01 | Metallgesellschaft Ag | Solution for the electroless deposition of tin-copper alloy coatings on metal surfaces |
DE1248419B (en) * | 1964-08-17 | 1967-08-24 | Collardin Gmbh Gerhard | Immersion bath for the electroless deposition of copper-tin layers |
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