Multi-layer plain bearing having an anti-fretting layer
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An anti-fretting wear, sliding bearing technology, applied in the direction of bearings, shafts and bearings, bearing components, etc., can solve problems such as damage, and achieve the effect of improving wear resistance, hardness and good wear resistance.
Active Publication Date: 2013-02-06
MIBA SINTER AUSTRIA
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example 1
[0080] Example 1: Cyanide-containing electrolyte for deposition of Cu-Sn-Zn alloy
[0081] Copper(I)…………0.25mol / l-0.35mol / l
[0082] Tin(IV)…………0.10mol / l-0.20mol / l
[0083] Zinc………………0.05mol / l-0.20mol / l
[0084] Free cyanide………0.30mol / l-0.45mol / l
[0085] Free alkalinity……………0.20mol / l-0.30mol / l
[0086] Tartrate…………0mol / l-0.20mol / l
[0087] Additives……………0.5g / l-5g / l
[0088] Temperature…………55℃-65℃
[0089] Current density………1A / dm 2 -4A / dm 2
example 2
[0090] Example 2: Cyanide-containing electrolytes for deposition of Cu-Ge-Zn alloys
[0091] Copper(I)…………0.25mol / l-0.35mol / l
[0092]Germanium……………0.05mol / l-0.30mol / l
[0093] Zinc………………0.05mol / l-0.20mol / l
[0094] Free cyanide………0.30mol / l-0.45mol / l
[0095] Free alkalinity……………0.20mol / l-1.0mol / l
[0096] Citrate……………0mol / l-0.20mol / l
[0097] Additives………………0.5g / l-5g / l
[0098] Temperature………………55℃-65℃
[0099] Current density……………1A / dm 2 -4A / dm 2
example 3
[0100] Example 3: Methanesulfonic acid-based cyanide-free electrolyte for deposition of Cu-Sn-Bi alloys
[0101] Copper(II)…………0.25mol / l-0.35mol / l
[0102] Tin(II)…………0.10mol / l-0.20mol / l
[0103] Bismuth…………0.05mol / l-0.2mol / l
[0104] Free acid…………0.8mol / l-2mol / l
[0105] Additives………………5g / l-50g / l
[0106] Temperature……………20℃-30℃
[0107] Current density…………0.5A / dm 2 -3A / dm 2
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Abstract
The invention relates to a multi-layer plain bearing (1) that has a front side (4) that can face the element to be supported and a rear side (6) opposite the front side, comprising a supporting layer (2), a sliding layer (3) arranged on the front side (4), and an anti-fretting layer (5) arranged on the rear side (6), wherein the anti-fretting layer (5) is made of a copper-based alloy having copper mixed-crystal grains. The copper-based alloy of the anti-fretting layer (5) is formed by a binary alloy having an alloying element from the group comprising aluminum, zinc, indium, silicon, germanium, and antimony or by an at least ternary alloy having one alloying element from the group comprising aluminum, zinc, indium, silicon, germanium, tin, and antimony and at least one further element from said group and/or the further group comprising nickel, cobalt, iron, manganese, bismuth, lead, silver, and phosphorus, possibly with unavoidable impurities originating from production, wherein the total fraction of said alloying elements is at least 1 wt % and at most 30 wt %.
Description
technical field [0001] The invention relates to a multilayer plain bearing having a front face which can face an element to be supported and a back face opposite said front face, comprising a support layer, a friction-reducing layer arranged on said front face and an anti-fretting layer arranged on said back face A wear layer, wherein the anti-fretting layer is composed of a copper-based alloy having copper mixed crystal grains. Background technique [0002] Backcoats for plain bearings with anti-fretting layers are already known from the prior art. With such a coating, it is intended to avoid friction welding or fretting corrosion of the plain bearing and thus "seize" in the bearing housing due to undesired relative movements of the components relative to one another. Friction corrosion often also leads to friction fatigue fractures. Tribocorrosion is mainly also determined by the pairing of materials. Hard materials or components with hard surface layers are more prone ...
Claims
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