CS229765B1 - Stabilizimg polishing ingredient for nickel bath for electroplanting of magnesium - Google Patents
Stabilizimg polishing ingredient for nickel bath for electroplanting of magnesium Download PDFInfo
- Publication number
- CS229765B1 CS229765B1 CS493882A CS493882A CS229765B1 CS 229765 B1 CS229765 B1 CS 229765B1 CS 493882 A CS493882 A CS 493882A CS 493882 A CS493882 A CS 493882A CS 229765 B1 CS229765 B1 CS 229765B1
- Authority
- CS
- Czechoslovakia
- Prior art keywords
- magnesium
- bath
- stabilizimg
- electroplanting
- nickel
- Prior art date
Links
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 title claims description 20
- 229910052759 nickel Inorganic materials 0.000 title claims description 10
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 title claims description 7
- 229910052749 magnesium Inorganic materials 0.000 title claims description 6
- 239000011777 magnesium Substances 0.000 title claims description 6
- 239000004615 ingredient Substances 0.000 title 1
- 238000005498 polishing Methods 0.000 title 1
- 238000007747 plating Methods 0.000 claims description 7
- 239000000654 additive Substances 0.000 claims description 6
- 230000000087 stabilizing effect Effects 0.000 claims description 6
- 230000000996 additive effect Effects 0.000 claims description 5
- 229910045601 alloy Inorganic materials 0.000 claims description 4
- 239000000956 alloy Substances 0.000 claims description 4
- 238000005282 brightening Methods 0.000 claims description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 2
- KVBCYCWRDBDGBG-UHFFFAOYSA-N azane;dihydrofluoride Chemical compound [NH4+].F.[F-] KVBCYCWRDBDGBG-UHFFFAOYSA-N 0.000 claims description 2
- 229940104869 fluorosilicate Drugs 0.000 claims description 2
- 238000001465 metallisation Methods 0.000 claims description 2
- 229910052708 sodium Inorganic materials 0.000 claims description 2
- 239000011734 sodium Substances 0.000 claims description 2
- -1 sulphate ions Chemical class 0.000 description 6
- 238000000576 coating method Methods 0.000 description 5
- 238000000354 decomposition reaction Methods 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 210000001280 germinal center Anatomy 0.000 description 2
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 2
- 239000002923 metal particle Substances 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 229910000861 Mg alloy Inorganic materials 0.000 description 1
- 244000052616 bacterial pathogen Species 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 239000004310 lactic acid Substances 0.000 description 1
- 235000014655 lactic acid Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910000159 nickel phosphate Inorganic materials 0.000 description 1
- OHPFZXJAABILIK-UHFFFAOYSA-J nickel(2+);phosphonato phosphate Chemical compound [Ni+2].[Ni+2].[O-]P([O-])(=O)OP([O-])([O-])=O OHPFZXJAABILIK-UHFFFAOYSA-J 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 229910021653 sulphate ion Inorganic materials 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Landscapes
- Chemically Coating (AREA)
Description
(54) Stabilizační a leskutvorná přísada do bezproudové niklovaci lázně na pokovování hořčíku(54) Stabilizing and shining additive for the electroless nickel plating bath for magnesium plating
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Vynález se týká stabilizační a leskutvorné přísady do bezproudové niklovací lázně na hořčík a Jeho slitiny. Stabilizátor a leskutvorná přísada zvyšují životnost lázně a vytvářejí pololesklé niklové -povlaky.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stabilizing and brightening additive for the electroless nickel plating bath for magnesium and its alloys. The stabilizer and the brightener add to the life of the bath and form semi-gloss nickel coatings.
Dosud se stabilizační a leskutvomé přísady do bezproudově niklující lázně pro pokovování hořčíku a jeho slitin nepoužívají. Při niklování hořčíku a jeho slitin dochází k uvolňování kovových částic, které následně tvoří zárodky způsobující rozklad lázně. Tato skutečnost se projevuje především u lázní obsahujících chloridové nebo síranové ionty, kde dochází k rozkladu vlivem zárodečných center tvořených suspensí uvolněných částic hořčíkové slitiny.So far, stabilizing and brightening additives have not been used in the electroless nickel plating bath for the metallization of magnesium and its alloys. The nickel plating of magnesium and its alloys releases metal particles, which in turn form germs causing the decomposition of the bath. This is particularly evident in baths containing chloride or sulphate ions, where decomposition occurs due to embryonic centers formed by a suspension of released magnesium alloy particles.
Výše uvedené nedostatky jsou odstraněny stabilizační a leskutvomou přísadou podle vynálezu, jejíž podstata spočívá v tom, že je tvořena fluorokřemičitanem v množství 0,1 až 1 g/1 a Κ,Κ-Diethyldithiokarbaminanem sodným v množství 0,01 až 100 mg/1 lázně. Ν,Ν-Diethyldithiokarbaminan omezuje růst zárodečných center, způsobujících rozklad niklovací lázně a přítomnost fluorokřemičitanů působí na zjemnění růstu krystalů niklového povlaku a na jeho strukturu, čímž je příznivě ovlivněna duktilita povlaku, jeho korozní odolnost. Snižuje se vnitřní pnutí povlaku a je zpomalena difuse vodíku při pokovování.The above-mentioned drawbacks are eliminated by the stabilizing and shining additive according to the invention, which consists in that it consists of a fluorosilicate in an amount of 0.1 to 1 g / l and a sodium Κ-diethyldithiocarbaminate in an amount of 0.01 to 100 mg / l bath . Ν, Ν-Diethyldithiocarbaminan limits the growth of the germinal centers causing the nickel bath decomposition, and the presence of fluorosilicates acts to refine the crystal growth of the nickel coating and its structure, favorably affecting the ductility of the coating and its corrosion resistance. The internal tension of the coating is reduced and the hydrogen diffusion during plating is slowed down.
Kové a vyšší účinky stabilizační a leskutvorné přísady dle vynálezu spočívají v tom, že zamezují rozkladu niklovací lázně omezováním růstu zárodečných center a zabraňují uvolňování kovových částic hořčíku do lázně. Podstatně se zvyšuje životnost a využitelnost lázně a tím se zároveň snižují výrobní náklady a dochází k úsporám pracnosti a materiálu. Vytvářejí se kvalitní pololesklé povlaky s výbornou adhesí a dobrou korozní odolností.The metal and higher effects of the stabilizing and shining additive according to the invention are that they prevent the decomposition of the nickel bath by limiting the growth of the germinal centers and prevent the release of magnesium metal particles into the bath. The lifetime and usability of the bath is considerably increased, thus reducing production costs and saving labor and material. High-quality semi-glossy coatings are produced with excellent adhesion and good corrosion resistance.
Příklady konkrétního provedení:Examples of specific embodiments:
1. Posfornan nikelnatý 25g/l1. Nickel diphosphate 25g / l
Kyselina mléčná 22,5g/lLactic acid 22,5g / l
Kyselý fluorid amonný 14,25g/lAmmonium acid fluoride 14,25g / l
- vylučovací rychlost 20 mikrometrů/hod.- Elimination rate of 20 microns / hour.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS493882A CS229765B1 (en) | 1982-06-30 | 1982-06-30 | Stabilizimg polishing ingredient for nickel bath for electroplanting of magnesium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS493882A CS229765B1 (en) | 1982-06-30 | 1982-06-30 | Stabilizimg polishing ingredient for nickel bath for electroplanting of magnesium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CS229765B1 true CS229765B1 (en) | 1984-06-18 |
Family
ID=5393238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS493882A CS229765B1 (en) | 1982-06-30 | 1982-06-30 | Stabilizimg polishing ingredient for nickel bath for electroplanting of magnesium |
Country Status (1)
| Country | Link |
|---|---|
| CS (1) | CS229765B1 (en) |
-
1982
- 1982-06-30 CS CS493882A patent/CS229765B1/en unknown
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