GB2117403A - Composite antifriction bearing - Google Patents

Composite antifriction bearing Download PDF

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Publication number
GB2117403A
GB2117403A GB08207532A GB8207532A GB2117403A GB 2117403 A GB2117403 A GB 2117403A GB 08207532 A GB08207532 A GB 08207532A GB 8207532 A GB8207532 A GB 8207532A GB 2117403 A GB2117403 A GB 2117403A
Authority
GB
United Kingdom
Prior art keywords
surface layer
diffusion barrier
antifriction bearing
copper
base layer
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
GB08207532A
Other versions
GB2117403B (en
Inventor
Prematilaka W Kalubowila
Stanislaw P Wach
Michael B Levens
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 Internationale Research Maatschappij BV
Original Assignee
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 Internationale Research Maatschappij BV filed Critical Shell Internationale Research Maatschappij BV
Priority to GB08207532A priority Critical patent/GB2117403B/en
Publication of GB2117403A publication Critical patent/GB2117403A/en
Application granted granted Critical
Publication of GB2117403B publication Critical patent/GB2117403B/en
Expired legal-status Critical Current

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Classifications

    • 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
    • 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
    • C25D7/00—Electroplating characterised by the article coated
    • C25D7/10—Bearings

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

Abstract

A composite antifriction bearing comprises a base layer 1 of metal alloy containing at least copper and lead, a surface layer 3 of lead alloyed with an anti-corrosion addition (e.g. tin or indium) and a diffusion barrier 2 arranged between the surface layer and the base layer, wherein the diffusion barrier comprises copper in combination with boron. The diffusion barrier prevents depletion of the anti- corrosion agent from the surface layer. The diffusion barrier and the surface layer may be applied by electrodeposition. <IMAGE>

Description

SPECIFICATION Composite antifriction bearing The invention relates to 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 anticorrosion addition and a diffusion barrier arranged between the surface layer and the base layer, wherein the diffusion barrier siows 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 copperlead 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 go 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 purpbsk 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 boron.
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 boron to the base layer by an electro-deposition 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 11-11 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 boron. 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 ,um to 25 ,um. 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 boron to the base layer 1 in order to form the diffusion barrier 2 by an electro-deposition process.
In this copper-boron electro-deposition process, an electroplating bath is used having the following composition: Concentration in gll of aqueous Substance solution Cupric sulphate, CuSO4.5H20 30 Boric acid, H3BO3 40 The operating conditions are as follows: Temperature 20-250C Cathode current density 0.5-1.0 A/dm2 The anode/cathode area ratio is for example 1:1 and the anodes are of copper.
The resulting product is Cu-B with a boron content of up to 0.02% 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
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 boron.
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
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (10)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Composite antifriction bearing The invention relates to 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 anticorrosion addition and a diffusion barrier arranged between the surface layer and the base layer, wherein the diffusion barrier siows 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 copperlead 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 go 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 purpbsk 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 boron. 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 boron to the base layer by an electro-deposition 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 11-11 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 boron. 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 ,um to 25 ,um. 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 boron to the base layer 1 in order to form the diffusion barrier 2 by an electro-deposition process. In this copper-boron electro-deposition process, an electroplating bath is used having the following composition: Concentration in gll of aqueous Substance solution Cupric sulphate, CuSO4.5H20 30 Boric acid, H3BO3 40 The operating conditions are as follows: Temperature 20-250C Cathode current density 0.5-1.0 A/dm2 The anode/cathode area ratio is for example 1:1 and the anodes are of copper. The resulting product is Cu-B with a boron content of up to 0.02% 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
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 boron.
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 6ym to about 25 ,um.
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 boron to the base layer by an electro-deposition 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 electrodeposition 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.
GB08207532A 1982-03-15 1982-03-15 Composite antifriction bearing Expired GB2117403B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08207532A GB2117403B (en) 1982-03-15 1982-03-15 Composite antifriction bearing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08207532A GB2117403B (en) 1982-03-15 1982-03-15 Composite antifriction bearing

Publications (2)

Publication Number Publication Date
GB2117403A true GB2117403A (en) 1983-10-12
GB2117403B GB2117403B (en) 1985-06-05

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2240343A (en) * 1990-01-19 1991-07-31 Honda Motor Co Ltd Crystalline lead alloy sliding surface
AT393367B (en) * 1986-01-20 1991-10-10 Glyco Metall Werke LAYER COMPOSITE MATERIAL, ESPECIALLY FOR SLIDING AND FRICTION ELEMENTS, AND METHOD FOR THE PRODUCTION THEREOF
GB2256235A (en) * 1991-05-31 1992-12-02 Honda Motor Co Ltd Slide member.
GB2256903A (en) * 1991-06-11 1992-12-23 Honda Motor Co Ltd Slide bearing
GB2257759A (en) * 1991-07-18 1993-01-20 Honda Motor Co Ltd Slide member
EP0960959A1 (en) * 1998-05-27 1999-12-01 FÜRSTLICH HOHENZOLLERNSCHE WERKE LAUCHERTHAL GMBH &amp; CO. Method of producting a metallic composite body and composite body

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB706672A (en) * 1952-03-05 1954-03-31 Glacier Co Ltd Improvements in or relating to plain bearings
GB733212A (en) * 1953-01-16 1955-07-06 Glacier Co Ltd Improvements in or relating to plain bearings
GB1600951A (en) * 1977-05-16 1981-10-21 Glyco Metall Werke Sliding bearing with an anti friction layer of an alloy with a lead-tin-copper base

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB706672A (en) * 1952-03-05 1954-03-31 Glacier Co Ltd Improvements in or relating to plain bearings
GB733212A (en) * 1953-01-16 1955-07-06 Glacier Co Ltd Improvements in or relating to plain bearings
GB1600951A (en) * 1977-05-16 1981-10-21 Glyco Metall Werke Sliding bearing with an anti friction layer of an alloy with a lead-tin-copper base

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT393367B (en) * 1986-01-20 1991-10-10 Glyco Metall Werke LAYER COMPOSITE MATERIAL, ESPECIALLY FOR SLIDING AND FRICTION ELEMENTS, AND METHOD FOR THE PRODUCTION THEREOF
US5310606A (en) * 1990-01-19 1994-05-10 Honda Giken Kogyo Kabushiki Kaisha Slide member
GB2240343A (en) * 1990-01-19 1991-07-31 Honda Motor Co Ltd Crystalline lead alloy sliding surface
DE4101386C2 (en) * 1990-01-19 2001-04-12 Honda Motor Co Ltd Slider
US5468567A (en) * 1990-01-19 1995-11-21 Honda Giken Kogyo Kabushiki Kaisha Slide member
GB2240343B (en) * 1990-01-19 1993-11-17 Honda Motor Co Ltd Slide member
FR2693775A1 (en) * 1991-05-31 1994-01-21 Honda Motor Co Ltd Sliding organ.
GB2256235B (en) * 1991-05-31 1995-07-12 Honda Motor Co Ltd Slide member
US5320912A (en) * 1991-05-31 1994-06-14 Honda Giken Kogyo Kabushiki Kaisha Slide member
US5322743A (en) * 1991-05-31 1994-06-21 Honda Giken Kogyo Kabushiki Kaisha Slide member
US5322742A (en) * 1991-05-31 1994-06-21 Honda Giken Kogyo Kabushiki Kaisha Slide member
US5324596A (en) * 1991-05-31 1994-06-28 Honda Giken Kogyo Kabushiki Kaisha Slide member
GB2256235A (en) * 1991-05-31 1992-12-02 Honda Motor Co Ltd Slide member.
US5342698A (en) * 1991-06-11 1994-08-30 Honda Giken Kogyo Kabushiki Kaisha Slide bearing
GB2256903B (en) * 1991-06-11 1995-03-29 Honda Motor Co Ltd Slide bearing
GB2256903A (en) * 1991-06-11 1992-12-23 Honda Motor Co Ltd Slide bearing
GB2257759A (en) * 1991-07-18 1993-01-20 Honda Motor Co Ltd Slide member
GB2257759B (en) * 1991-07-18 1995-12-20 Honda Motor Co Ltd Slide member
EP0960959A1 (en) * 1998-05-27 1999-12-01 FÜRSTLICH HOHENZOLLERNSCHE WERKE LAUCHERTHAL GMBH &amp; CO. Method of producting a metallic composite body and composite body

Also Published As

Publication number Publication date
GB2117403B (en) 1985-06-05

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PCNP Patent ceased through non-payment of renewal fee