DE1496964A1 - Chromium plating electrolyte - Google Patents

Description

J Oh *. PiuibiiOIi üi.li υιά · ίί. ^; Λ - .. Ύ ((J ^ -uiIIvJaLo) iilixlx ^ li, oarsfiold Ιία. Perivale, J-reenl'orci, 1-iiddleaex / j-rOidb

VerchromuiigaelOiCtrolyt

The Jirfindiuiü "concerns the Vercni'omung baw. Ühromplattiei * and c. j.irfij.iaLmgs according to \ .ircl eiä_e :: i Vercnromuiigseleictrolyten reinpulverisier Ler lloiilenütoff i: u.; ese "üzt.

3ei der .jiei.troabsoiieiauii ^; obtained from a Jad this iirt v / ER aeu microporous Ghroniiiiederscitlä ^ e. JJie G-rö3e the Xoiileiistoifteilciieii (eg u-rapij.it) should not exceed and preferably grooved as ^l j 10 microns Kikron Durciiinesser, for example from 0.02 to 5 Hikron. The concentrations that can be used cover a fairly wide range between 0.1 and 500 g / l, preferably 5 to 15 g / l.

BATH ORIGINAL

909833/1072

The electrolytes which can be used for the production of microporous deposits under the application of this principle of rapidity are also found in a wide range of areas of the - ^ le ^ trolyt, which is an onroiiion uiA i'luorid-, ijilioofluorid - iind / odex · -juliatioiißii ^ i.tii-iilt, iüt ^ eei ^ i.ex, uüiöpxelsweise öalae vci_ Α1ί »&. 1ΐ: ·. * 'υκ11οΐ«. or Araisionium lum / or ^ c-iV / ei'ela: V.ire. jji-ä aurc.igof.lnrxen attempts ev ^ ixoeii, da ;; an oili-coi'liiorid-i.ul'Ui ... «■ ·" Elektro lyt more favorable v / ar, since uarcli the Voiviaucifensein uilico i'luorid der ^ atlioaenffekt: sgrad much ^ rcijsr v / ar. In operation der (iraihit through Iiibev / egunvxi'ilten ..ic air or R'inren changing the clirring in ouspeiiaion ^ exic.lten v / ground.

The concentration of chromium ions can be between 1 and 75%. '., ^T ei _ut aie common nromic acid-ucn' .- Eielsäu.relösuiig verv / endot v.ird, clamt results in the norriialar ratio of 100-1 oliromic acid-οchv / egg'elallure in 50 *: / l "graunite {.5 VjL- kron) n excellent results, a typical combination of such a miscnun .;.; I have shown s

Chromic acid 500 g / l, z.iJ. 1pU-75O κ / 1

SciiV / eic acid 5 es / 1, aJ 1.5-7 _t .5 κ / 1

3-rapIiit 50 g / l, for example 1.0-100 e / 1

909833/1072

BATH ORIGINAL

52 to .43 ° <J

iJtrora density OK, d "to 1G, 5 A / dm

sauvache movement aarc.i _: Lui't

Example of a solution of the silicon fluoride type na aas shared given:. .

Chromic acid: 500-g / 1, a. ^. 300-500 g / l

• 3cixv.ei "icic acid.; F, j / 1, ^{e.g. ί, 0- 1} ι25 g / l-

Potash and / or KatriuEisilicoi''luorid 1/4 - 1L '& /

Graphite:. 30 f / l, a.] 3. 5-75 ß / 1

ieiaperatur. 352 to 43 ° 0 -

ij-troiudicate 10, β biö 32.3 A / dm ' ¹ '

liülen with Liift

iis should eut-neither aluminum-lead or zinc-i31ei anodes be used. The separation from this Jileictrolyte type v; e has excellent corrosion resistance, especially resistance to penetration the corrosion of the green detail. i) the lie of the jilektroist no more difficult than with a usual Veriicsl solution.

The invention lcami for applying the adornment directly on the iron metals or aur isolation on coated

- 90 98 33 / 1Q 72: bä0 original

Ketal, ζ. 13. Sealed ferrous metals are used.

eis ρ IeI 1

ohromaic acid WO g / 1 Q cliwe fe 1 acid e 2.5 g / l graphite 15 g / l 'i'eiuperatur 38 ° above sea level Current density 10.8 A / dm ² Weak β lead with air

example

Chromic acid 275 g / l 43 ⁰ O ο ciiv / e f e 1 acid e 1.7 g / l 16,15 A / dm ² Graphite ^: 15 6/1 with IiUft Potassium or liatrium
Silicofluorid 'i> g / l 'l'enperatur Current density Weak cooling

Be i s ρ i e 1

Chromic acid 275 g / l

Strontium sulfate is in the Üterschufl about the

soluble amount added

12 g / l

SJ09833 / 1072

Potassium or Lodium ailicofluoria j3 g / l

y-rajjL.it 1ü g / l

temperature 43 G

; jtromdicute 21.5 A / dm

Jchvacnes Ü ".U: rei'i. Wit air

e i s d i e 1

Ci * roias.riure 500 s / i ourüiitiuLisaliat g / l Potassium or potassium
trium silicoi'luorid , 5 g / l ü-rapiiit 2 s / i i'eaperatur 43 ° C ütroadi elite 1.6.1 5 A / dm ² rfchv / aches stirring with air

909833/1072 bad original

Claims (6)

- ο - P A 1 'ϊ 1; ϊ A »; 8 ΓΉ 'i Ü i J 1. im .. Vercuroneu suitable ijleictrolyt, Liadur marked, ά & ίί he 1'tiinpalvörisiert.u Ä.oiils = jiöto contains. 2. electrolyte no. Cn iinsurucxi 1, aaduvc " net, ciaii he alü ^ oJalei _t s "cofx j-rapüii ejiTr .-. llu. 3. jjileiftrolyt uacii claim 1 or d, thereby gekeniizeiclinet, that the carbon has an average diameter von weixifjer as 1ü Kikron and in one Amount between Ο, ί and 500 g / l is available. 4. Xilektrolyte according to claim 1, 2 or 3 »dadurc. , .ekennzcicimet, ciaü er Gnrom- ima bcrr-.eielSH.are contains » b. . Electrolyte according to ^ nsoruch 4, thus _o -: eiaiLc - :. c: .- iiet, because it also contains potassium uiid / or i.'atriuiU3ilicof_ -.orid. 6. Verconronurij-sverfanren using an avleic trolytes nacn, one of claims 1 to 5, dadurcxi marked 9833/10 72 ^ BATH ORIGINAL Met, that the electrolyte is wiLr end of the VercJiroinimg er'lia't or on other '.travel in ^ ev / eguri ^ gerLalten v / ird, .i de; i koiile-ititol'l "in bus pension au nalten. 7 · Verfa ^ reii nacn AiLSpinicIi 6, dadurcli gekennzeichnei ;, - ix-lilsi- or Zimi-lead iaiodes can be used. 909833/1072