DE1621206A1 - Process for coating sliding, rubbing, workpieces subject to wear and tear - Google Patents

Description

PROCESS SLIDING TO BITE STRATIFICATION. HEATING. .. "' ON VERSCnIJ) ISS CLAIMED TRACK PIECES" Λ;

It has long been known that one can use metallic or;

non-metallic solids of various electrolytes, e.g. electrolytic nickel baths, and that these are stored in the precipitation during the electrolysis T / earth,. : "-.--; ^

By Iwkorporation yön Feststoffteilcheix the physical, cheraisehen and electro-chemical properties> köririen scliaften the deposited il ^ are talls significantly affected, such as hardness, wear resistance, Reibuntjskoeffiiaient, Temperäturbeständigkeit, Oxydatipnsbe- i sfiändigkeit, Eorrosionsbeständigkeit _t reflection properties, \ G-lana "■ ■ . .. _ _; - '■ - -' ■ .. = - ■ ■ "■". ■. ■. . ⁷ - ■ _ ^; ;: - -, ..- ■ -. - _:

Hatall coverings made according to this process; However, the watch is on the fact that with thicker layers, like them be used for technical purposes, even after application post-processing of directional internal anodes, processes, such as grinding operations, are required *

In the event of an accident / baths or procedures for stBomloseii: Separation of iron Ketallnlederpchlägen * ν '

In the literature, the term ec |. I indicates that the electroless baths from all impurities by I'eat - : StofftoiXciien are to be kept free, otherwise they are as a result of nucleation; disintegrate. l

JSs has; now surprisingly shown that electroless _; J5äderii-a number of usual, slightly soluble particles of corresponding purity and considerable partial size can be added, which have been built into the leather sole, dioso parts kb'jinen in the bath, e.g. Air, Stiokatöff ^) or be kept in 8uBpenai.ön * - i

In the meantime, an electroless nickel electrolyte has become known in the literature, to which small solid particles are to be added for the purpose of depositing a thin nickel layer ο After a Yerühromuhg a microporous chromium layer is to be achieved in order to achieve an increased corrosion protection effect of the precipitate «(Patent GDR kl ko6) "■

The present invention refers to the "electroless" deposition relatively dioker "dispersion hardened ¹¹ metal coatings. The term" current-solvent deposition "as used herein, refers to the deposition of ρ metal coatings without external power source, preferably by chemical reduction"

We refer to metal coatings as "dispersion hardened", in embedded in solid particles that are inert during deposition became. These particles of metal can be partially or to be completely enclosed "

Nach.dem method according to the invention, it is also possible relatively large particles (O, O1 · - ■ IQO microns) without current to add working baths and the corresponding waste ' To get divorces even in continuous operation, like that that ζ.B * precipitates between 5 ■ * 2GO microns are obtained can. These dispersion hardened metal coatings have opposite the electrolytically produced the advantage that the Dimensional accuracy is maintained up to the full layer thickness and a processing of the layers after the deposition completely omitted or can be kept to a minimum.

Another advantage of the electroless deposited, dispersion hardened Metal coatings are the layers that ■ duroh the! Intercalation of solid particles in most Cases have already experienced an increase in hardness Temperature effect can be hardened even further (1000 to 1100 HV).> Such hardnesses can be electrolytic the bottom of the layers cannot be reached "

109823 / 1360- ^{C 3} "

After the hej? DGftdmigs ^r gViiiasseii ^; Ve ~ rf alireii Ιερίΐίΐθ'ΐΐ'Vot ^ eU

all Te lie- "- Ib ^ eIS Etiideit 'been,''uiie rth. " of practice''slidingb'e-

Ansprudit wercfeii ', e.g. ll ^

Used as matrix lcäiin ije'ispUelswei'se ⁷ * .werdeiij '*

Table 1 '^;;% - · '' ^ -

I nickel'-? ^: V

30 'g / l' ^ iclce'lclilörid '"' ' ; 15 g / l .. sodium acetate. ,. - ·, -,

10 g / l sodium hypoplasia pH 4 ""'.''."'""■ - ■ ■ '■' ■ _ ■■■ - ^ri . '■' ■ - · ;:

95 ⁰ C ■ '- ;;''■/.-*';; ■ '

> '3Q g / l- Nickel sulfate - ...,. "■ tüÖ g / l sodium citrate "-"

-50 ^v g / l> Aaimioniuiiiclalorid '■ ^:

10 g / l

pn a-10

^ iökelGlilorid, / ί < : <.

10 _v g / l _s ..Natrivuncitra-fc. . \

Zq 'g / l ■ ""' Sodium acetafc """""''"'.

20 g / l 'sodium succinate · ". · 3 ml / 1 Nz-JDiatixylborazaii

0.01 g / l BIe i clil or id pH 50 mi ^ l'Hetliäiiöi '''65 C

II copper.

a) 20, g / 1 copper sulfate ■ "100 'g / l Tr'iilä

20 ml / 1 formaldehyde

^ ore-r Sefgnettesalz ibeztf. EDTA as Complexing agent)

III cobalt

a), 35.g / l · _λ cobalt clilprid. ^ '. ; _: '20 g / l sodium acetate ¹ ^ / sodium hypopliospliit ·

t OSf 8Z3 4 1 3 _; ^%

b) 30 g / l cobalt sulphate 110 g / l sodium citrate * K5 g / l ammonium chloride 12 g / l sodium hypophosphite

95 c

Nickel / cobalt a) 20 g / l Niekelchiorid

10 g / l cobalt chloride 20 g / l sodium citrate 10 g / l sodium hypophosphite

95 C

b) 25 g / l nickel sulphate. 5 g / l cobalt chloride

60 g / l ammonium chloride

15 g / l sodium hypophosphite

PH _o 9i5 95 C

, l) These basic solutions contain pesticides according to Table II Suspended Atisserdera can add brighteners τί-earth »

As solids, for example, they can be used alone or in combination will:

Table II

Kaolin

Glasraehl talc graphite Plastics diamond

Oxides, carbides, nitrides, borides, suicides, sulfides, silicates, sulfates, carbonates, phosphates _t oxalates, fluorides of

Aluminum magnesium

Boron calcium

Chromium: barium

Hafnium strontium

Molybdenum cerium

Silicon: Bisen 'Titan Manganese

Tantalum

Vanadium _r

. Tungsten zirconium nickel

The diameter of the solid particles can vary depending on the application Purpose of precipitation in the range of 0.01 to IQO

Microns. 109 8 2 37 1 3 ßO SADOMGiNAL

Claims (1)

Fat e η ta η s ρ r ü c h e: I) 'method' for Β _θ scliiciittuig: sliding, rubbing ,; heels that are stressed on the sole, because you rc h. geke η η ζ ei ο η η. et that an electroless Metallisierungslaad are added therein, insoluble hezw * sctnrerlösliclie Feststoffteilälien in Eorngrössen of 0.01 to 100 microns, that can be stored in ittit dön metal precipitate, 2 ') Method according to claim 1, characterized in that "fr, ate the solid particles by moving them in suspension being held" : " 3) Method according to claim Z _9, characterized in that an electroless oil bath is used »· ^ f) Method according to claim 1 and 2, characterized in that that a touchless cobalt bath is used, 5) Method according to claim 1 and 2, characterized in that d.as an electroless nickel / cobalt alloy bath is used will. ": 6) Method according to claim 1 and 2, characterized in that an electroless copper bath is used » BATH ORIGINAL 109823/1360