DE1521375C3 - Dip tinning of aluminum - Google Patents
Dip tinning of aluminumInfo
- Publication number
- DE1521375C3 DE1521375C3 DE19641521375 DE1521375A DE1521375C3 DE 1521375 C3 DE1521375 C3 DE 1521375C3 DE 19641521375 DE19641521375 DE 19641521375 DE 1521375 A DE1521375 A DE 1521375A DE 1521375 C3 DE1521375 C3 DE 1521375C3
- Authority
- DE
- Germany
- Prior art keywords
- tin
- stannate
- baths
- aluminum
- acid
- 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
- 229910052782 aluminium Inorganic materials 0.000 title claims 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminum Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims 7
- 229910052718 tin Inorganic materials 0.000 claims description 18
- ATJFFYVFTNAWJD-UHFFFAOYSA-N tin hydride Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 17
- 239000002253 acid Substances 0.000 claims description 11
- 239000002738 chelating agent Substances 0.000 claims description 9
- 239000011780 sodium chloride Substances 0.000 claims description 9
- 150000003839 salts Chemical class 0.000 claims description 8
- QTBSBXVTEAMEQO-UHFFFAOYSA-N acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- RGHNJXZEOKUKBD-SQOUGZDYSA-M D-gluconate Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C([O-])=O RGHNJXZEOKUKBD-SQOUGZDYSA-M 0.000 claims description 4
- 239000003513 alkali Substances 0.000 claims description 4
- 150000008044 alkali metal hydroxides Chemical class 0.000 claims description 4
- 229940050410 gluconate Drugs 0.000 claims description 4
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 238000007654 immersion Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 239000011734 sodium Substances 0.000 claims description 3
- DSLZVSRJTYRBFB-LLEIAEIESA-L D-glucarate(2-) Chemical compound [O-]C(=O)[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C([O-])=O DSLZVSRJTYRBFB-LLEIAEIESA-L 0.000 claims description 2
- IOUCSUBTZWXKTA-UHFFFAOYSA-N dipotassium;dioxido(oxo)tin Chemical compound [K+].[K+].[O-][Sn]([O-])=O IOUCSUBTZWXKTA-UHFFFAOYSA-N 0.000 claims description 2
- KCXVZYZYPLLWCC-UHFFFAOYSA-N edta Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 claims description 2
- KEAYESYHFKHZAL-UHFFFAOYSA-N sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 229940071182 stannate Drugs 0.000 claims 8
- 125000005402 stannate group Chemical group 0.000 claims 8
- CVNKFOIOZXAFBO-UHFFFAOYSA-J tin(4+);tetrahydroxide Chemical compound [OH-].[OH-].[OH-].[OH-].[Sn+4] CVNKFOIOZXAFBO-UHFFFAOYSA-J 0.000 claims 4
- -1 Ethylene diamino Chemical group 0.000 claims 3
- 150000007513 acids Chemical class 0.000 claims 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims 3
- 229910052802 copper Inorganic materials 0.000 claims 3
- 239000010949 copper Substances 0.000 claims 3
- 238000007747 plating Methods 0.000 claims 3
- 238000001556 precipitation Methods 0.000 claims 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims 3
- DHMQDGOQFOQNFH-UHFFFAOYSA-N glycine Chemical compound NCC(O)=O DHMQDGOQFOQNFH-UHFFFAOYSA-N 0.000 claims 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims 2
- 239000011777 magnesium Substances 0.000 claims 2
- 229910052749 magnesium Inorganic materials 0.000 claims 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims 2
- 229910052725 zinc Inorganic materials 0.000 claims 2
- 239000011701 zinc Substances 0.000 claims 2
- PIICEJLVQHRZGT-UHFFFAOYSA-N 1,2-ethanediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 claims 1
- ILYBMUDLGFMEMU-UHFFFAOYSA-N 7-$l^{1}-oxidanyl-2,3,4,5,6,7-hexaoxoheptan-1-olate Chemical compound [O]C(=O)C(=O)C(=O)C(=O)C(=O)C(=O)C[O-] ILYBMUDLGFMEMU-UHFFFAOYSA-N 0.000 claims 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-N Carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 claims 1
- 239000005977 Ethylene Substances 0.000 claims 1
- 239000004471 Glycine Substances 0.000 claims 1
- 229910045601 alloy Inorganic materials 0.000 claims 1
- 239000000956 alloy Substances 0.000 claims 1
- 125000004432 carbon atoms Chemical group C* 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 claims 1
- 150000004985 diamines Chemical class 0.000 claims 1
- 238000007598 dipping method Methods 0.000 claims 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims 1
- 238000005246 galvanizing Methods 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxyl anion Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims 1
- 150000002500 ions Chemical class 0.000 claims 1
- 229910052742 iron Inorganic materials 0.000 claims 1
- 150000002596 lactones Chemical class 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- 229910052751 metal Inorganic materials 0.000 claims 1
- 239000002184 metal Substances 0.000 claims 1
- 150000002739 metals Chemical class 0.000 claims 1
- 229910052759 nickel Inorganic materials 0.000 claims 1
- 159000000001 potassium salts Chemical class 0.000 claims 1
- 239000002244 precipitate Substances 0.000 claims 1
- 229910052710 silicon Inorganic materials 0.000 claims 1
- 239000010703 silicon Substances 0.000 claims 1
- 229910052708 sodium Inorganic materials 0.000 claims 1
- 159000000000 sodium salts Chemical class 0.000 claims 1
- 239000000126 substance Substances 0.000 claims 1
- KWYUFKZDYYNOTN-UHFFFAOYSA-M potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 15
- UPMFZISCCZSDND-JJKGCWMISA-M Sodium gluconate Chemical compound [Na+].OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C([O-])=O UPMFZISCCZSDND-JJKGCWMISA-M 0.000 description 3
- 229940005574 Sodium gluconate Drugs 0.000 description 3
- 239000000176 sodium gluconate Substances 0.000 description 3
- 235000012207 sodium gluconate Nutrition 0.000 description 3
- FEWJPZIEWOKRBE-XIXRPRMCSA-N Mesotartaric acid Chemical compound OC(=O)[C@@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-XIXRPRMCSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive Effects 0.000 description 1
- 150000001447 alkali salts Chemical class 0.000 description 1
- 230000003247 decreasing Effects 0.000 description 1
- 230000001419 dependent Effects 0.000 description 1
- RBNPOMFGQQGHHO-UHFFFAOYSA-M glycerate Chemical compound OCC(O)C([O-])=O RBNPOMFGQQGHHO-UHFFFAOYSA-M 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 229940095064 tartrate Drugs 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
Description
essigsäure und Ν,Ν-Dihydroxyäthylglycin können in Form der Säure oder in Form eines Salzes, zweckmäßigerweise als Alkalisalze, zugesetzt werden.acetic acid and Ν, Ν-dihydroxyethylglycine can be used in In the form of the acid or in the form of a salt, expediently as alkali salts, can be added.
Das erfindungsgemäße Verzinnungsverfahren kann bei Temperaturen zwischen Raumtemperatur und 900C, vorzugsweise zwischen 40 und 800C, insbesondere 600C, durchgeführt werden. Die Eintauchzeiten können zwischen 1 und 6 Minuten liegen.The tinning of the invention may at temperatures between room temperature and 90 0 C, preferably between 40 and 80 0 C, are performed in particular from 60 0 C. Immersion times can be between 1 and 6 minutes.
Die Erfindung wird durch die folgenden Beispiele näher erläutert.The invention is illustrated in more detail by the following examples.
Es werden vier Lösungen hergestellt, die 70 g/l Kaliumstannat und 0,4,8 bzw. 12 g/l Kaliumhydroxyd enthalten. Die Lösungen werden auf eine Temperatur von 6O0C gebracht. In jede Lösung wird eine Scheibe eines Zylinders aus einer Aluminiumlegierung (D-132 Alcoa) genau 4 Minuten eingetaucht. Die Scheiben werden aus den Lösungen entnommen, getrocknet und gewogen. Dann wird der-Zinnbelag von den Scheiben durch Eintauchen in eine Mischung aus 3 Teilen Wasser und 1 Teil konzentrierter Salpetersäure entfernt, worauf die Scheiben wieder gebogen werden. Aus dein Gewichtsverlust wird die Dicke des Überzugs berechnet.Four solutions are prepared which contain 70 g / l potassium stannate and 0.4, 8 or 12 g / l potassium hydroxide. The solutions are brought to a temperature of 6O 0 C. A disk of a cylinder made of an aluminum alloy (D-132 Alcoa) is immersed in each solution for exactly 4 minutes. The disks are removed from the solutions, dried and weighed. The tin coating is then removed from the disks by immersion in a mixture of 3 parts of water and 1 part of concentrated nitric acid, whereupon the disks are bent again. The thickness of the coating is calculated from your weight loss.
Hierauf werden zu jeder Lösung 8 g/l Natriumgluconat zugesetzt, worauf der Verzinnungsvorgang und die Bestimmung der Dicke des Überzugs wiederholt wird. Hierauf werden den einzelnen Lösungen weitere Mengen Natriumgluconat zugesetzt, bis jede der vier Lösungen 39 g/l davon enthält. Nach jeder Zugabe wird die erhaltene Überzugsdicke bestimmt. Die Ergebnisse sind in Tabelle 1 aufgezeigt.8 g / l sodium gluconate are then added to each solution, followed by the tinning process and repeating the determination of the thickness of the coating. Thereupon the individual solutions further amounts of sodium gluconate are added until each of the four solutions contains 39 g / l of it. After every The thickness of the coating obtained is determined by adding. The results are shown in Table 1.
Aus dieser Tabelle ist ersichtlich, daß die Dicke des abgeschiedenen Zinns aus den Bädern, die nur Zinn und Alkalimetallhydroxyd und kein Gluconat enthielten, in großem Maße mit dem Gehalt an freiem Alkali schwankte. Die Zinnabscheidung stieg auf das Dreifache, wenn der Kaliumhydroxydgehalt sich von O auf 12 g/l erhöhte. In Bädern mit Natriumgluconat war die Abscheidung dagegen viel weniger vom Gehalt an freiem KOH abhängig. Die Abscheidungen aus den Bädern mit Gluconat besaßen ein besseres AussehenFrom this table it can be seen that the thickness of the deposited tin from the baths containing only tin and contained alkali metal hydroxide and no gluconate, in large part with the content of free Alkali fluctuated. The tin deposition increased threefold when the potassium hydroxide content decreased from O increased to 12 g / l. In contrast, in baths with sodium gluconate, the deposition was much less of the content dependent on free KOH. The deposits from the gluconate baths looked better
as und weniger Streifen, insbesondere bei hohen Kaliumhydroxydgehalten von 8 und 12 g/l.as and fewer streaks, especially with high potassium hydroxide contents from 8 and 12 g / l.
Es wurde eine weitere Reihe von Versuchen durchgeführt, wobei andere Chelatisierungsmittel verwendet wurden. Die Ergebnisse sind in Tabelle 2 enthalten.Another series of experiments was carried out using different chelating agents became. The results are shown in Table 2.
Der Vorteil des Arbeitens gemäß der Erfindung ist klar ersichtlich.The advantage of working in accordance with the invention is clearly evident.
Zusatzadditive
g/lg / l
KOH-KonzentrationKOH concentration
1,5 g/l 2 g/l 4 g/l1.5 g / l 2 g / l 4 g / l
(Dicke der Zinnschicht in μ) 6 g/l(Thickness of the tin layer in μ) 6 g / l
8 g/l8 g / l
9 g/l9 g / l
12 g/l12 g / l
1,40 5,201.40 5.20
4,56
8,94
4,95
4,004.56
8.94
4.95
4.00
5,285.28
6,05 3,70 2,79 5,35 2,61 5,12 3,826.05 3.70 2.79 5.35 2.61 5.12 3.82
2,542.54
3,043.04
Claims (1)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US31233163A | 1963-09-30 | 1963-09-30 | |
US31233163 | 1963-09-30 | ||
DEM0062617 | 1964-09-29 |
Publications (3)
Publication Number | Publication Date |
---|---|
DE1521375A1 DE1521375A1 (en) | 1969-08-21 |
DE1521375B2 DE1521375B2 (en) | 1976-03-04 |
DE1521375C3 true DE1521375C3 (en) | 1976-10-21 |
Family
ID=
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE845736C (en) | Process for phosphating metals | |
DE457729C (en) | Process for the treatment of iron or steel or objects with iron or steel surfaces with solutions containing phosphoric acid | |
DE1496916B1 (en) | Cyanide-free, galvanic bath and process for the deposition of galvanic coatings | |
DE1803524A1 (en) | Ruthenium compound and process for its preparation | |
DE877233C (en) | Bath for the production of galvanic coatings | |
DE1521889B1 (en) | METHOD OF PHOSPHATING IRON AND STEEL | |
DE1521375C3 (en) | Dip tinning of aluminum | |
DE2235814B2 (en) | Process for the surface treatment of shaped glass bodies by applying an aqueous solution containing aluminum phosphate to the heated glass surface and a solution for carrying out the process | |
DE1521364B2 (en) | ALKALINE AQUATIC TINNING BATH FOR ALUMINUM | |
DE1521375B2 (en) | TINING OF ALUMINUM | |
DE2750932A1 (en) | CYANIDE-FREE BATHROOM FOR ELECTRONIC GOLD DEPOSITION AND PROCESS FOR SEPARATING GOLD | |
DE1621632A1 (en) | Agent for pickling aluminum | |
DE1040135B (en) | Process for the production of semiconductor arrangements from silicon or the like by using a chemical etching process at the point of the p-n transition | |
DE1521364C (en) | Alkaline, aqueous dip tinning bath for aluminum | |
DE584411C (en) | Process for the production of corrosion-resistant coatings on iron and steel | |
DE887292C (en) | Process for activating metal surfaces | |
DE742412C (en) | Bath for the production of firmly adhering lead coatings on aluminum and aluminum alloys | |
DE587166C (en) | Galvanizing process | |
DE860445C (en) | Process and solution for the treatment of metallic surfaces | |
DE1242970B (en) | Process for the regeneration of an exhausted bath for the chemical deposition of a metal coating containing boron | |
DE583349C (en) | Process to improve the rust-protecting phosphate coatings on iron objects | |
DE601652C (en) | Process for the electrolytic felling of silver from thiosulphate solutions | |
DE1621172C3 (en) | Galvanic bright gold bath | |
DE2548832C3 (en) | Process for the catalytic germination of surfaces, in particular insulating material surfaces and a solution for carrying out the process | |
DE508207C (en) | Process for the production of adhesive coatings on aluminum and its alloys |