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GB2114156A - Composite antifriction bearing - Google Patents

Composite antifriction bearing Download PDF

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Publication number
GB2114156A
GB2114156A GB08202304A GB8202304A GB2114156A GB 2114156 A GB2114156 A GB 2114156A GB 08202304 A GB08202304 A GB 08202304A GB 8202304 A GB8202304 A GB 8202304A GB 2114156 A GB2114156 A GB 2114156A
Authority
GB
United Kingdom
Prior art keywords
surface layer
antifriction bearing
diffusion barrier
copper
composite
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
Application number
GB08202304A
Other versions
GB2114156B (en
Inventor
Prematilaka W Kalubowila
Stanislaw P Wach
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHELL INT RESEARCH
Shell Internationale Research Maatschappij BV
Original Assignee
SHELL INT RESEARCH
Shell Internationale Research Maatschappij BV
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by SHELL INT RESEARCH, Shell Internationale Research Maatschappij BV filed Critical SHELL INT RESEARCH
Priority to GB08202304A priority Critical patent/GB2114156B/en
Publication of GB2114156A publication Critical patent/GB2114156A/en
Application granted granted Critical
Publication of GB2114156B publication Critical patent/GB2114156B/en
Expired legal-status Critical Current

Links

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
    • C25D3/56—Electroplating: Baths therefor from solutions of alloys
    • C25D3/58—Electroplating: Baths therefor from solutions of alloys containing more than 50% by weight of copper
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/10—Electroplating with more than one layer of the same or of different metals
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/06—Sliding surface mainly made of metal
    • F16C33/12—Structural composition; Use of special materials or surface treatments, e.g. for rust-proofing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/06—Sliding surface mainly made of metal
    • F16C33/14—Special methods of manufacture; Running-in
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2223/00—Surface treatments; Hardening; Coating
    • F16C2223/30—Coating surfaces
    • F16C2223/70—Coating surfaces by electroplating or electrolytic coating, e.g. anodising, galvanising

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electrochemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Sliding-Contact Bearings (AREA)

Abstract

A composite antifriction bearing comprises a base layer of metal alloy containing at least copper and lead, a surface layer of lead alloyed with an anti-corrosion addition e.g. tin and a diffusion barrier arranged between the surface layer and the base layer, wherein the diffusion barrier comprises copper in combination with phosphorus. The method of applying the diffusion barrier and preferably the surface layer is by means of an electro-deposition process.

Description

SPECIFICATION Composite antifriction bearing The invention relates to a composite antifriction bearing comprising a base layer of metal alloy containing at least copper and lead, a surface layer of lead alloyed with an anti-corrosion addition and a diffusion barrier arranged between the surface layer and the base layer, wherein the diffusion barrier slows down the reaction rate between the anti-corrosion addition of the surface layer and components of the base layer.
The base layer comprises generally a copper-lead alloy or a lead-bronze alloy.
The purpose of the surface layer is to increase the tolerance of the bearing to misalignment, dirt and wear debris, to enable it to operate against unhardened journals and to protect the bearing against corrosion.
The prime purpose of the anti-corrosion addition in the surface layer is to provide resistance to corrosion by hot-oxidised lubricating oils, or lubricating oils contaminated by partially decomposed fuels. The anti-corrosion addition generally is tin or indium.
From U.S. patent specification No. 3,307,926, a diffusion barrier is known consisting of a tinnickel alloy for a composite antifriction bearing having a tin containing surface layer.
It is an object of the invention to provide a composite antifriction bearing having an improved diffusion barrier diminishing depletion of the anti-corrosion addition from the surface layer to a greater extent than the known diffusion barriers. For this purpose the composite antifriction bearing according to the invention comprises a base layer of a metal alloy containing at least copper and lead, a surface layer of lead alloyed with an anti-corrosion addition and a diffusion barrier arranged between the surface layer and the base layer, wherein the diffusion barrier comprises copper in combination with phosphorus.
It is another object of the invention to provide a method of manufacturing such a composite antifriction bearing. For this purpose said method comprises applying copper in combination with phosphorus to the base layer by an electrodeposition process, in order to form the diffusion barrier and then applying the surface layer on top of the diffusion barrier.
The invention will now be further explained with reference to the accompanying drawings, wherein Fig. 1 shows a perspective view of one half of an embodiment of a composite antifriction bearing according to the invention.
Fig. 2 shows a cross-section lI-Il of the embodiment of Fig. 1.
In the composite antifriction bearing as shown, the base layer is indicated by reference numeral 1, which base layer 1 is a metal alloy containing at least copper and lead, such as a copper-lead alloy or a lead-bronze alloy. The base layer 1 may be supported at the outside periphery by a support body (not shown), for example made of steel. The inner side of the base layer 1 is bonded to a diffusion barrier 2 comprising copper in combination with phosphorus. The inner side of the diffusion barrier 2 is bonded to a surface layer 3. The surface layer 3 may have a thickness in the range of from about 6 Mm to 25 Mm.
The surface layer 3 may be a lead-tin alloy, wherein the quantity of tin is in the range of from about 2% to about 20% by weight. Instead the surface layer 3 may be a lead-indium alloy, wherein the quantity of indium is in the range of from about 3% to about 10% by weight. The inner surface 4 of the surface layer 3 is adapted to cooperate with a journal (not shown), wherein the surface 4 and the journal may be separated by a film of a suitable lubricant.
The bearing according to the invention is manufactured by applying copper in combination with phosphorus to the base layer 1 in order to form the diffusion barrier 2 by an electro-deposition process.
In this copper-phosphorus electro-deposition process, an electroplating bath is used having the following composition: Concentration in g/dm3 Substance of aqueous solution Cupric chloride, CuCi2 . 2H20 (s) 60-70 Phosphorous acid, H3PO3 (s) 10-1 5 Orthophosphoric acid, H3PO4 (1) 40-50 (density 1.75 g/cm3) The operating conditions are as follows: Temperature 40-450C Current density 0.3-1.5 A/dm2 pH at 220C 1-0.5 The resulting product is Cu-P with a phosphorus content of 0.050.15% wt.
Finally the surface layer 3 is applied on top of the diffusion barrier 2. This surface layer 3 can for example be applied by an electro-deposition process, which is a process known in the art as such.

Claims (10)

1. A composite antifriction bearing comprising a base layer of a metal alloy containing at least copper and lead, a surface layer of lead alloyed with an anti-corrosion addition and a diffusion barrier arranged between the surface layer and the base layer, wherein the diffusion barrier comprises copper in combination with phosphorus.
2. The antifriction bearing as claimed in claim 1, wherein the anti-corrosion addition is tin.
3. The antifriction bearing as claimed in claim 2, wherein the quantity of tin in the surface layer is in the range of from about 2% to about 20% by weight
4. The antifriction bearing as claimed in claim 1 wherein the anti-corrosion addition is indium.
5. The composite antifriction bearing as claimed in claim 4, wherein the quantity of indium in the surface layer is in the range of from about 3% to about 10% by weight.
6. The composite antifriction bearing as claimed in any one of the claims 1-5, wherein the thickness of the surface layer is in the range of from about 6 m to about 25 zIm.
7. A method of manufacturing a composite antifriction bearing as claimed in any one of the claims 1 to 6, comprising applying copper in combination with phosphorus to the base layer by an electrodeposition process, in order to form the diffusion barrier, and then applying the surface layer on top of the diffusion barrier.
8. The method as claimed in claim 7, wherein the surface layer is applied by an electro-deposition process.
9. A composite antifriction bearing substantially as described with particular reference to the accompanying drawings.
10. A method of manufacturing a composite antifriction bearing substantially as described.
GB08202304A 1982-01-27 1982-01-27 Composite antifriction bearing Expired GB2114156B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08202304A GB2114156B (en) 1982-01-27 1982-01-27 Composite antifriction bearing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08202304A GB2114156B (en) 1982-01-27 1982-01-27 Composite antifriction bearing

Publications (2)

Publication Number Publication Date
GB2114156A true GB2114156A (en) 1983-08-17
GB2114156B GB2114156B (en) 1985-06-05

Family

ID=10527910

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08202304A Expired GB2114156B (en) 1982-01-27 1982-01-27 Composite antifriction bearing

Country Status (1)

Country Link
GB (1) GB2114156B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2134136A (en) * 1983-01-19 1984-08-08 Shell Int Research An electronic conduit and a method of manufacturing it
GB2240989A (en) * 1990-02-03 1991-08-21 Glyco Metall Werke Wear-resistant bearing overlay with improved non-slip.

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2134136A (en) * 1983-01-19 1984-08-08 Shell Int Research An electronic conduit and a method of manufacturing it
GB2240989A (en) * 1990-02-03 1991-08-21 Glyco Metall Werke Wear-resistant bearing overlay with improved non-slip.
US5300368A (en) * 1990-02-03 1994-04-05 Glyco-Metall-Werke Glyco B.V. & Co. Kg Highly wear-resistant overlay with improved slip and a method of its production

Also Published As

Publication number Publication date
GB2114156B (en) 1985-06-05

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PCNP Patent ceased through non-payment of renewal fee