DE1621172A1 - Electrolyte for the deposition of bright gold coatings - Google Patents
Electrolyte for the deposition of bright gold coatingsInfo
- Publication number
- DE1621172A1 DE1621172A1 DE19671621172 DE1621172A DE1621172A1 DE 1621172 A1 DE1621172 A1 DE 1621172A1 DE 19671621172 DE19671621172 DE 19671621172 DE 1621172 A DE1621172 A DE 1621172A DE 1621172 A1 DE1621172 A1 DE 1621172A1
- Authority
- DE
- Germany
- Prior art keywords
- electrolyte
- deposition
- arsenic
- bright gold
- gold coatings
- 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.)
- Granted
Links
- 239000003792 electrolyte Substances 0.000 title claims description 11
- 238000000576 coating method Methods 0.000 title description 4
- 230000008021 deposition Effects 0.000 title description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 title description 2
- 239000010931 gold Substances 0.000 title description 2
- 229910052737 gold Inorganic materials 0.000 title description 2
- 239000003921 oil Substances 0.000 claims 1
- 229910052785 arsenic Inorganic materials 0.000 description 8
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 8
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 150000001495 arsenic compounds Chemical class 0.000 description 2
- -1 halides Arsenate Chemical class 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- KDYFGRWQOYBRFD-UHFFFAOYSA-N succinic acid Chemical compound OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 2
- BJEPYKJPYRNKOW-REOHCLBHSA-N (S)-malic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O BJEPYKJPYRNKOW-REOHCLBHSA-N 0.000 description 1
- DJHGAFSJWGLOIV-UHFFFAOYSA-K Arsenate3- Chemical class [O-][As]([O-])([O-])=O DJHGAFSJWGLOIV-UHFFFAOYSA-K 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910001854 alkali hydroxide Inorganic materials 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000008044 alkali metal hydroxides Chemical class 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- BJEPYKJPYRNKOW-UHFFFAOYSA-N alpha-hydroxysuccinic acid Natural products OC(=O)C(O)CC(O)=O BJEPYKJPYRNKOW-UHFFFAOYSA-N 0.000 description 1
- 229940000489 arsenate Drugs 0.000 description 1
- GCPXMJHSNVMWNM-UHFFFAOYSA-N arsenous acid Chemical class O[As](O)O GCPXMJHSNVMWNM-UHFFFAOYSA-N 0.000 description 1
- 239000001630 malic acid Substances 0.000 description 1
- 235000011090 malic acid Nutrition 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- PTLRDCMBXHILCL-UHFFFAOYSA-M sodium arsenite Chemical compound [Na+].[O-][As]=O PTLRDCMBXHILCL-UHFFFAOYSA-M 0.000 description 1
- 239000001384 succinic acid Substances 0.000 description 1
- NJRXVEJTAYWCQJ-UHFFFAOYSA-N thiomalic acid Chemical compound OC(=O)CC(S)C(O)=O NJRXVEJTAYWCQJ-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/48—Electroplating: Baths therefor from solutions of gold
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electroplating And Plating Baths Therefor (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Chemically Coating (AREA)
Description
DH, XCiG. F. WTTESTHOFF BIFL. ING, G.DH, XCiG. F. WTTESTHOFF BIFL. ING, G.
8 MtTNCSEU 9O SCHTViIIGEHSTHASSi: 28 MtTNCSEU 9O SCHTVIIGEHSTHASSi: 2
TELEFON 22 06 51TELEPHONE 22 06 51
TEtEOHAMMAUBESSE: ΡΠΟΤΕΟΤΡΛΤΕΝΤ Mt)KOHISTEtEOHAMMAUBESSE: ΡΠΟΤΕΟΤΡΛΤΕΝΤ Mt) KOHIS
lA-33lA-33
■rie■ rie
h r- el b u η κ h r- el bu η κ
zu der Patentanmeldung to the patent application
Korporation, 75 liiver hoad üutley 10, j>iew Jersey, U0 ü. A»Corporation, 75 liiver hoad üutley 10, j> iew Jersey, U 0 ü. A »
De treffendDe aptly
yt für die Abscheidung; yon u-lanz».-.Old-yt for separation ; yon u-lanz ».-. Old-
Die iirfindunp: betrifft einen Elektrolyt und dessen Mun/> zur Herstellung von glänzenden ooldüöer- Kh:-.in, i/isjpenonderö fur QlanzKoldüberzü^ie aus 24— Karäti-HMi i/olrJ. In dem erfindungs;r';emassen üJieictroiyt befindet :;Lch in L(j::ua;.- ein Oolcithioiuaiatkomplex in alKalischer ijör-un^· sowie oiiio Verin^e wenpe von Arsen," welches als iöraichen .jalz zu;-ef;eben vrird. Der pil-f/ort des Elektrolyts ist auf ca. Io bis 11,3 einp.ostellt. Die Arbeitstemperatur botr-i^t ca. ?A bis 82Ü(J. Der erfindungs/veinässe The iirfindunp: relates to an electrolyte and its Mun /> for the production of glossy ooldüöer- Kh - in, i / isjpenonderö for QlanzKoldüberzü ^ ie from 24 Karäti-HMi i / olrJ.. In the fiction; r '; emassen üJieictroiyt is:; Lch in L (j :: ua; .- an Oolcithioiuaiatkomplex in Alkalischer ijör-un ^ · as well as oiiio Verin ^ e wenpe of arsenic, "which as iöraichen .jalz zu; -ef; just vrird . the pil-f / place of the electrolyte is einp.ostellt to approximately Io to 11.3. the working temperature botr-i ^ t ca.? A to 82 U (J. the Invent / veinässe
BADBATH
.10 9 8 13/1567.10 9 8 13/1567
lÄ-33 V^lÄ-33 V ^
Elektrolyt eignet sich für Stromdichten von cäo 0,2 Ms 1,1 A/dm2,Electrolyte suitable for current densities of CAE o Ms 0.2 1.1 A / dm 2,
Arsen wird der Lösung in einer solchenArsenic is the solution in such a
bis u,Xl r zugesetzt, daß ungefähr 10 iao/1/in jjösun." vorhanden sind» Die zugabe kann mit einer beliecigen Arsenverbindung erfolgen, welche in dem Elektrolyt bei einem pH-Wert zwischen 10 und 11,5 eine ausreichende Löslichkeit besitzt. Da es sich um einen alkalischen Elektrolyt handelt, sind für diesen Üvieck die Alkaliarsenite und -arsenate besonders geeignet, wan kann das Arsen jedoch auch in .form des uxyds oder Halogenide in den Elektrolyt einbringen. In diesem !••all bildet sich das Arsenit oder Arsenat mit aem Alkalimetall des Elektrolyten»until u, Xl r added that about 10 iao / 1 / in jjösun. "are available. The addition can be made with any arsenic compound which has sufficient solubility in the electrolyte at a pH between 10 and 11.5. Since it is an alkaline electrolyte, the alkali arsenites and arsenates are particularly suitable for this region, but where arsenic can also be introduced into the electrolyte in the form of uxyds or halides Arsenate with aem alkali metal of the electrolyte »
Ein verfahren zur elektrolytischen mit einem iiericaptometalli-complexsalz ist Dereits aus der UtJ Patentschrift 3 238 112 bekannt, hier vard als Herkaptoverbindung ein "netallitoraplex von 2-lierkapto bernsteinsäure oder i'hioapf el säure beschrieben. Wird in dem Elektrolyt nur ein AlKaIi-.A method for electrolytic with a iiericaptometalli-complex salt is Dereits known from UtJ patent specification 3 238 112, here vard a "netallitoraplex" as a Herkapto connection of 2-lierkapto succinic acid or i'hioapf el acid described. If only an AlKaI-.
BAD ORIGINAL.BATH ORIGINAL.
1 0 9 8 1 8../ 15 6 71 0 9 8 1 8 ../ 15 6 7
lA-33 7LA-33 7
gcoläthio-nalatlcomplex ohne Arsen nach der Erfindung angewandt, so sind die Überzüge, wenn sie eine otärke von ungerähr 2,5 «ua (100 mil): erreichen nur meist halb glänzendegcoläthio-nalatlcomplex without arsenic according to the invention When applied, the coatings are if they are of a distressing strength of about 2.5 ″ and others (100 mil): only reach mostly semi shiny
Die herstellung von Alkälit:olathiomalaten kann z.bfc nacn. den in"den üb Patentschriiten 1 9y^ 213 oder 3 23p 112 beschriebenen verfahren geschehen»The manufacture of Alkälit: olathiomalaten can z.bfc nacn. those in "the above patent documents 1 9y ^ 213 or 3 23p 112 procedure described happen »
Der eri'in&ungrsgemässe Elektrolyt für die Abscheidung; -von G-lanzgoldüberzügen enthält 40 bis lOü g/l xhioapi'elsä.urec 2y bis 60 {·/!. Alkali hy droxyd, Λ bis 8 p/1 U-old zugesetzt in i?iorm von Alkaligolöthiomalatj lü •na/1 bis v=,12 ε;/!, vorzugsvjeise Iu bis 3^ rag/l Arsen zugesetzt als lösliche Ar seilverbindung, x^obei dieser Elektrolyt einen pH-wert γοη. IG bis 12 und' eine Temperatur von 25"bis 75°^ besitzen soll und sich für eine stromdichte von 0,2 bis ü,? A/dm (2 bis 7 A/Bqeft*) eignet,The eri'in & improper electrolyte for the deposition; - of glossy gold coatings contains 40 to 10 g / l xhioapi'elsä.urec 2y to 60 {· / !. Alkali hydroxide, Λ to 8 p / 1 U-old added in i? i orm of Alkaligolöthiomalatj lü • na / 1 to v =, 12 ε; / !, preferably Iu to 3 ^ rag / l arsenic added as a soluble arsenic compound, x ^ if this electrolyte has a pH value γοη. IG to 12 and 'should have a temperature of 25 "to 75 ° ^ and is suitable for a current density of 0.2 to g,? A / dm (2 to 7 A / Bq e ft *),
uan Kann mit dem Arsengelialt sehrwohl. auch über 3ü mr/l rensn und erhält -UlanZ^OlduberZUge,- jedoch fuhrt aie zusätzliche Arsenmenge nicht zu einer .Steigerung der; -.ilanzeß.uan can very well with the arsenic. also over 3ü mr / l rensn and receives -UlanZ ^ OlduberZUge, - however, the additional amount of arsenic does not lead to an increase in the; -.ilanzeß.
BAD 1098 13/1567 :,-=·BATH 1098 13/1567:, - =
i'-ol/enöes Beispiel erläutert die üirfindung:i'-ol / enoe example explains the finding:
Es wurde einö' wässerige" Lösung hergestellt," wobei 52 'Fi'liioapfelsäure' mit- einer· wässerigen' Lösung- : van Matriumhydröxyd entsprechend' kO g· H'aüH gemischt ■ xtfurden. ungefähr 8· g ü-oidy wabtes in Form eimes vorgebildeten riatriumgoldthiomalats angewandt wird, wird in dieses Gemisch eingebracht und mit Wasser auf 1 1 aufgefüllt,: Nun wurden ungefähr 35 mB Natriumarsenit oder "eine andere Lö-.sliche. Ar.se.nver-bin'dung eingebracht, iso dai3 in.der Lösung ca. ZQ mg Arsen vorlagen, wenn . . erforderlich, wird Natronlauge .oder Thioapfelsäure zur Einstellung des pH-Werts auf 11,5 eingebracht. Es wurde bei einer Temperatur von 70°C und einer Stromdichte . von 0,2 ii/dm (2 A/sq..ft.) bei einer Spannung von 0,7 V elektroiysiert, lvian erhielt Glanzüberzüge bis zu einer Schichtdicke von ca. 12 t7 mm und darüber (500 mil).An aqueous "solution" was produced, "whereby 52 'fi'liio malic acid' was mixed with an" aqueous "solution : of sodium hydroxide corresponding to ' kO g · H'aüH. about 8 · g u-oidy wabtes enclosed between the layer preformed riatriumgoldthiomalats is applied in the form, is introduced into this mixture and made up with water to 1 1 ,: Now were about 35 m B sodium arsenite or "another LOE .sliche. Ar.se. The solution was about 10 mg of arsenic, if.. necessary, sodium hydroxide solution .or thio malic acid is brought in to adjust the pH to 11.5. It was brought in at a temperature of 70 ° C and a current density. 0.2 ii / dm (2 a / sq..ft.) elektroiysiert at a voltage of 0.7 V, v l ian received gloss coatings up to a layer thickness of about 12 t 7 mm or more, (500 mil).
'!Patentansprüche ' ! Claims
1 09 81 8'/,1-56.71 09 81 8 '/, 1-56.7
Claims (1)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US58467966A | 1966-10-06 | 1966-10-06 | |
| US58467966 | 1966-10-06 | ||
| DES0112287 | 1967-10-05 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DE1621172A1 true DE1621172A1 (en) | 1971-04-29 |
| DE1621172B2 DE1621172B2 (en) | 1976-03-11 |
| DE1621172C3 DE1621172C3 (en) | 1976-10-28 |
Family
ID=
Also Published As
| Publication number | Publication date |
|---|---|
| GB1195379A (en) | 1970-06-17 |
| FR1540639A (en) | 1968-09-27 |
| DE1621172B2 (en) | 1976-03-11 |
| NL6713221A (en) | 1968-04-08 |
| NL155316B (en) | 1977-12-15 |
| CH466661A (en) | 1968-12-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C3 | Grant after two publication steps (3rd publication) | ||
| E77 | Valid patent as to the heymanns-index 1977 | ||
| EHJ | Ceased/non-payment of the annual fee |