Classifications

• • C—CHEMISTRY; METALLURGY
  • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
  • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
  • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
  • C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
• • A—HUMAN NECESSITIES
  • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
  • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
  • A47J36/00—Parts, details or accessories of cooking-vessels
  • A47J36/02—Selection of specific materials, e.g. heavy bottoms with copper inlay or with insulating inlay
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
  • B05D5/08—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface
  • B05D5/083—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface involving the use of fluoropolymers
  • B05D5/086—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface involving the use of fluoropolymers having an anchoring layer
• • C—CHEMISTRY; METALLURGY
  • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
  • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
  • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
  • C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
  • C04B41/46—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with organic materials
  • C04B41/48—Macromolecular compounds
  • C04B41/4838—Halogenated polymers
  • C04B41/4842—Fluorine-containing polymers
• • C—CHEMISTRY; METALLURGY
  • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
  • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
  • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
  • C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
  • C04B41/81—Coating or impregnation
  • C04B41/82—Coating or impregnation with organic materials
  • C04B41/83—Macromolecular compounds
• • 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
  • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
  • C23C4/18—After-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
  • 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
  • F16C33/043—Sliding surface consisting mainly of ceramics, cermets or hard carbon, e.g. diamond like carbon [DLC]
• • 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
  • F16C33/20—Sliding surface consisting mainly of plastics
  • F16C33/201—Composition of the plastic
• • 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
  • F16C33/24—Brasses; Bushes; Linings with different areas of the sliding surface consisting of different materials
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
  • F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
  • F28F19/02—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using coatings, e.g. vitreous or enamel coatings

Definitions

• the present invention relates to a non-stick coating for surfaces, for example cooking surfaces, heat exchange surfaces, friction surfaces. It also relates to a process for obtaining the surface and the surface obtained.
• the coatings offered have one to two advantageous properties, but are most often very poor in one or more others.
• the coatings offered have one to two advantageous properties, but are most often very poor in one or more others. For example :
• the object of the invention is to solve at least the problem of the incompatibility of the aforementioned parameters and more particularly to obtain a synthesis of the properties of quasicrystals for their hardness and conductivity, and of PTFE for their non-stick properties. , with the creation of permanent cooking surfaces and also offering remarkable polish.
• a non-stick coating for surfaces according to the invention is characterized in that it is formed: - of a base of quasi-crystalline alloy forming a reticle adhering perfectly by its underside to a matrix and having an upper surface with porosity particular.
• non-stick coating for example surfaces for cooking utensils, characterized in that it uses a composite material consisting of the combination of an underlayer of quasi-crystalline alloy. and of a PTFE type polymer on a matrix and in that the processing is such that the final surface has a porous quasi-crystalline mesh leaving PTFE cells slightly recessed from the surface.
• REPLACEMENT SHEET Processes in which the quasi-crystal / polymer proportion varies according to the desired surface effect to favor the specific and specific properties of one or other of the constituents
• the following describes a coating for surfaces or cooking utensils, the single figure of which shows the structure.
• the quasi-crystalline base (2) is used in such a way that it is porous and the pores (6) are filled with polymer (3) in such a way that the polymer does not surface on the quasi-crystalline surface, but offers a slight shrinkage resulting in a slightly concave surface.
• the coating thus obtained according to the invention consists of the combination of a base of quasi-crystalline alloy (1) (within the meaning of CNRS patent No. FR-A-2 635 117) forming a reticle of variable porosity, and of a non-stick polymer (3) filling the pores (6), the polymer finally occupying a proportion of the surface such that any contact with the working instruments (9) such as knives, cutlery ... is done with the 'quasi-crystalline soul therefore very resistant, while glbal contact with
• the asperities of the quasi-crystalline base (7) are all in the same outcrop plane (8) and all the concave surfaces of the pores are set back relative to said outcrop plane.
• non-stick polymer polytetrafluoroethylene, known by the abbreviation used below for PTFE, is preferably used.
• Such a coating consists according to the invention for example in a surfacing process in two partially superimposed phases whose sequences are known. After an adequate cleaning, the surface (2) is treated by bombardment or thermal spraying of quasi-crystalline particles according to a technique suitable for the use of these pulverulent alloys.
• the conditions for the projection of powdery particles are calculated so as to obtain the desired porosity.
• the treated part is then coated with PTFE and polymerized in the oven.
• the coating formed according to the invention makes it possible to combine the advantages of quasi-crystalline coatings and surfaces based on PTFE, namely, that it combines: - the good thermal qualities of quasi-crystals: the coating saves time 1/3 of cooking and / or power.
• the quasi-crystalline layer then also functions as a bonding layer.
• the contact surface with food is mainly provided by the polymer, reducing to a minimum the phenomena of sticking and gratinating.
• the obturation of the porosity by the polymer reduces the trapping therefore the degradation of
• the non-stick properties of the coating obtained according to the invention can be used for other applications than cooking or heat exchange surfaces, and in particular for all applications where it is sought to reduce the mechanical adhesion. between two surfaces, all tribological applications for resistance to friction and corrosion.
• such a coating can be applied according to the invention on the contact surfaces of an assembly (shaft-bearing).

Landscapes

• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Ceramic Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Materials Engineering (AREA)
• Organic Chemistry (AREA)
• Structural Engineering (AREA)
• Physics & Mathematics (AREA)
• Thermal Sciences (AREA)
• Food Science & Technology (AREA)
• Plasma & Fusion (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Metallurgy (AREA)
• Laminated Bodies (AREA)
• Paints Or Removers (AREA)
• Cookers (AREA)

Applications Claiming Priority (3)

Publications (1)

Family

ID=9431665

Family Applications (1)

Country Status (5)

Cited By (1)

Families Citing this family (15)

Family Cites Families (6)

• 1992
  • 1992-07-03 FR FR9208411A patent/FR2693185B1/fr not_active Expired - Fee Related
• 1993
  • 1993-07-05 CA CA 2116694 patent/CA2116694A1/fr not_active Abandoned
  • 1993-07-05 EP EP93914815A patent/EP0602221A1/de not_active Withdrawn
  • 1993-07-05 WO PCT/FR1993/000691 patent/WO1994001029A1/fr not_active Application Discontinuation
  • 1993-07-05 JP JP6503034A patent/JPH06510692A/ja active Pending

Non-Patent Citations (1)

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