WO2003091588A2 - Disque de frein a surface de frottement revetue d'une couche protectrice - Google Patents

Disque de frein a surface de frottement revetue d'une couche protectrice Download PDF

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Publication number
WO2003091588A2
WO2003091588A2 PCT/GB2003/001783 GB0301783W WO03091588A2 WO 2003091588 A2 WO2003091588 A2 WO 2003091588A2 GB 0301783 W GB0301783 W GB 0301783W WO 03091588 A2 WO03091588 A2 WO 03091588A2
Authority
WO
WIPO (PCT)
Prior art keywords
component
disc
coating
brake
component according
Prior art date
Application number
PCT/GB2003/001783
Other languages
English (en)
Other versions
WO2003091588A3 (fr
Inventor
Martin Murphy
Original Assignee
Martin Murphy
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 Martin Murphy filed Critical Martin Murphy
Priority to AU2003229943A priority Critical patent/AU2003229943A1/en
Publication of WO2003091588A2 publication Critical patent/WO2003091588A2/fr
Publication of WO2003091588A3 publication Critical patent/WO2003091588A3/fr

Links

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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/02—Braking members; Mounting thereof
    • F16D65/12—Discs; Drums for disc brakes
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/0025—Rust- or corrosion-preventing means
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
    • F16D69/02—Composition of linings ; Methods of manufacturing
    • F16D69/023—Composite materials containing carbon and carbon fibres or fibres made of carbonizable material
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/02—Braking members; Mounting thereof
    • F16D2065/13—Parts or details of discs or drums
    • F16D2065/1304—Structure
    • F16D2065/132—Structure layered
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2200/00—Materials; Production methods therefor
    • F16D2200/0034—Materials; Production methods therefor non-metallic
    • F16D2200/0039—Ceramics
    • F16D2200/0047—Ceramic composite, e.g. C/C composite infiltrated with Si or B, or ceramic matrix infiltrated with metal
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2250/00—Manufacturing; Assembly
    • F16D2250/0038—Surface treatment
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2250/00—Manufacturing; Assembly
    • F16D2250/0038—Surface treatment
    • F16D2250/0046—Coating

Definitions

  • the invention relates to a component such as a brake disc formed of a carbon-based composite with a protective outer layer on the friction surfaces.
  • Disc brakes comprising a caliper and a disc have been widely adopted, particularly for automotive applications.
  • the disc is squeezed during braking between pads of friction material, mounted in the caliper; and since the disc has a high resistance to compression, and since much of the disc is exposed and so can cool more quickly than for instance the drum of a drum brake, a disc brake is less prone than the drum brake to brake "fade” i.e. to partial loss of braking at high disc and/or pad temperatures, as may occur following intensive brake usage over a short period.
  • Such components can be parts used in automotive, aerospace, railways aeronautic, machine tool, construction and like equipment.
  • such discs have utilized some type of reinforcement, invariably carbon filaments in some form such as cloth, chopped fibre, woven and the like.
  • the primary purpose of such filaments is to impart high mechanical properties such as strength and rigidity, to the discs so that they can withstand the forces encountered during braking in high performance applications.
  • Such applications are typically but not exclusively automotive and ⁇ aerospace, for example for use in the braking systems of high performance sports cars and the like.
  • the fabrication of laminated brake discs containing carbon cloth or filament layers is commonly referred to in the art as a carbon/carbon (C/C) composite.
  • carbon is used in the generic sense and can mean either amorphous carbon or crystalline graphite).
  • brake discs have been made utilizing a bulk carbonaceous layer such as bulk graphite in order to reduce the long fabrication time of the C/C composite laminate and to reduce cost.
  • brake discs have also utilized combinations of the C/C composite and bulk graphite layers.
  • discs have been produced from Carbon performs that have been infiltrated with materials other than Carbon, for example Silicon, these discs are sometimes referred to as "Carbon ceramic" discs.
  • Patent EP 0 54 196 teaches the application of a ceramic coating to a metallic substrate, preferably an aluminium MMC, the intention being to improve the temperature capability of the aluminium disc by the formation of a thermal barrier.
  • the present invention teaches the application of a coating to the surface of a C-based brake disc with the intention of protecting the surface of the disc from oxidation and increasing the wear resistance of the disc. Thus the life of the disc is extended and the cost of the component is significantly reduced.
  • the coating also provides one half of the friction couple formed between disc and pad that previously would have been formed between the C-based substrate and the pad.
  • the resultant disc brake possesses the properties of
  • the invention teaches the application of a coating to other types of carbon based brake discs.
  • a coating to other types of carbon based brake discs.
  • alternative materials to the C/C composites used in uncoated brake discs as in the presence of a coating there is no longer the requirement for the carbon based material to have the friction characteristics of a brake material.
  • a brake disc or like component formed of C/C composite the component having a protective coating on at least one surface thereof characterized in that the protective coating is a ceramic coating selected to provide a combination of properties selected from wearresistanee,. thermal capacity, thermal conductivity, friction performance, oxidation resistance and has a thickness of about 0.2 millimetres.
  • one particular component is a brake disc which in use can be worn down by a brake pad during use and in this case the protective coating is selected to protect the surface against an applied abrasive force.
  • the applied abrasive force is the passage of hot gases over the combustors and turbine blades in a jet engine.
  • the coating may be selected to provide corrosion resistance, hardness, wear resistance, compatibility or other properties.
  • the coating may be selected to have thermal properties, e.g. conductivity.
  • the coating can be applied by any method and can be a combination of several coatings and layers incorporating interlayers designed for example to provide high oxidation and/or abrasion resistance and/or bonding of the upper layer to the CDISC-INT-01 Description Page 3
  • the protective coating is applied by electroplating, plasma deposition, magnetron sputtering, dipping or impregnation or a like technique.
  • the coating is chosen to be compatible with the component, e.g. to have a rate of linear heat expansion substantially the same as that of the composite of the brake disc component to avoid the risk of debonding at service temperature.
  • a brake disc of the invention can be used with a wide range of brake pads. For certain applications is possible to use commercially available brake pads without modification.
  • the discs may be used at the front and/or rear of a vehicle, including a racing-vehicle.
  • Figure 1 is a cross-sectional view of a typical disc for use in a disc brake
  • Figure 2 is an enlarged section of a circled portion of Figure 1.
  • the vehicle brake disc 10 is of generally a "floating" form, with a mounting bell portion 13 adapted to be secured to rotate with a vehicle wheel or axle (11); in alternative embodiments the disc can be mounted to rotate with the vehicle propshaft and may be ventilated.
  • the bell and disc are held together in known manner, e.g. by bolts and nuts, not shown.
  • Friction pads A,B are movable into engagement with opposed si e faces 10a, 10b of disc 10 to effect braking of the disc. During such engagement if the disc is rotating, high temperatures are generated at the discs surfaceSi which may have therefore a f ⁇ ctionally induced temperature exceeding 1000°C.
  • the disc 10 comprises a body portion 12, formed of a C/C composite with a coating applied by a plasma spray technique.
  • the density of the composite is about 1.81 gm/cm3.
  • the plasma sprayed coating 20 is applied to a depth sufficient to protect the underlying composite, typically about 0.2 millimetre. In this instance the coating was alumina based.
  • An objective of this particular embodiment of the invention is to provide enhanced wear resistance to the C/C composite.
  • Another objective of this particular embodiment is to provide a friction couple with the brake pad that is similar to that obtained when using the C/C composite without the coating in the same application.
  • a brake disc was prepared according to the invention suitable for application to a Formula 1 racing car. Carbon-carbon composite was used for the substrate and a coating applied consisting of predominantly Alumina by the process of plasma spraying. The disc was tested on a purpose built dynamometer situated at the CDISC-INT-01 Description Page 4

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Materials Engineering (AREA)
  • Braking Arrangements (AREA)

Abstract

L'invention concerne un composant tel qu'un disque de frein, constitué d'un composite à base de carbone et dont la surface de frottement est recouverte d'une couche extérieure protectrice. Cette couche extérieure protectrice est, de préférence, formée à partir d'une céramique et sélectionnée pour fournir un certain coefficient de frottement et/ou une forte résistance à l'usure appropriée aux conditions de fonctionnement. Cette invention permet l'utilisation d'une gamme étendue de substrats à base de carbone dans la fabrication de freins pour une rentabilité et une efficacité technique optimales.
PCT/GB2003/001783 2002-04-26 2003-04-25 Disque de frein a surface de frottement revetue d'une couche protectrice WO2003091588A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003229943A AU2003229943A1 (en) 2002-04-26 2003-04-25 Brake disc with protective coating on the friction surface

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0209565A GB2388560A (en) 2002-04-26 2002-04-26 Carbon-carbon brake disc with protective outer layer on friction surface
GB0209565.1 2002-04-26

Publications (2)

Publication Number Publication Date
WO2003091588A2 true WO2003091588A2 (fr) 2003-11-06
WO2003091588A3 WO2003091588A3 (fr) 2004-01-08

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2003/001783 WO2003091588A2 (fr) 2002-04-26 2003-04-25 Disque de frein a surface de frottement revetue d'une couche protectrice

Country Status (3)

Country Link
AU (1) AU2003229943A1 (fr)
GB (1) GB2388560A (fr)
WO (1) WO2003091588A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2100864A1 (fr) * 2008-03-05 2009-09-16 Audi AG Procédé de fabrication de surfaces ou couches de friction d'une plaque de frein en céramique et carbone et plaque de frein en céramique et carbone dotée de telles surfaces ou couches friction

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8689671B2 (en) 2006-09-29 2014-04-08 Federal-Mogul World Wide, Inc. Lightweight armor and methods of making
US8084089B2 (en) * 2007-02-20 2011-12-27 Tech M3, Inc. Wear resistant coating for brake disks with unique surface appearance and method for coating

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4290510A (en) * 1978-12-14 1981-09-22 Chrysler Corporation Wear resistant coated article
GB2249558A (en) * 1990-09-14 1992-05-13 Martin John Michael Murphy Coated metal matrix composite component; brake disc
US5526914A (en) * 1994-04-12 1996-06-18 Lanxide Technology Company, Lp Brake rotors, clutch plates and like parts and methods for making the same

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04183774A (ja) * 1990-11-19 1992-06-30 Toyota Motor Corp 摩擦材料
DE29610498U1 (de) * 1996-06-14 1996-08-29 Zornik, Miklavz, Lesce Fahrzeugbrems- bzw. Fahrzeugkupplungsscheibe aus C-C/SiC-Werkstoff
DE29617774U1 (de) * 1996-10-12 1996-11-28 Dr.Ing.H.C. F. Porsche Ag, 70435 Stuttgart Bremsscheibe
US6737120B1 (en) * 1999-03-04 2004-05-18 Honeywell International Inc. Oxidation-protective coatings for carbon-carbon components
DE29924019U1 (de) * 1999-08-26 2001-10-11 Porsche Ag Reibpaarung für Scheibenbremsen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4290510A (en) * 1978-12-14 1981-09-22 Chrysler Corporation Wear resistant coated article
GB2249558A (en) * 1990-09-14 1992-05-13 Martin John Michael Murphy Coated metal matrix composite component; brake disc
US5526914A (en) * 1994-04-12 1996-06-18 Lanxide Technology Company, Lp Brake rotors, clutch plates and like parts and methods for making the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2100864A1 (fr) * 2008-03-05 2009-09-16 Audi AG Procédé de fabrication de surfaces ou couches de friction d'une plaque de frein en céramique et carbone et plaque de frein en céramique et carbone dotée de telles surfaces ou couches friction

Also Published As

Publication number Publication date
AU2003229943A1 (en) 2003-11-10
AU2003229943A8 (en) 2003-11-10
GB0209565D0 (en) 2002-06-05
GB2388560A (en) 2003-11-19
WO2003091588A3 (fr) 2004-01-08

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