EP1315847B1 - Compose destine a la modification de metaux et la restauration de la surface de metaux - Google Patents

Compose destine a la modification de metaux et la restauration de la surface de metaux Download PDF

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Publication number
EP1315847B1
EP1315847B1 EP01970396A EP01970396A EP1315847B1 EP 1315847 B1 EP1315847 B1 EP 1315847B1 EP 01970396 A EP01970396 A EP 01970396A EP 01970396 A EP01970396 A EP 01970396A EP 1315847 B1 EP1315847 B1 EP 1315847B1
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Prior art keywords
compound
amount
mass
cermet
metal
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EP01970396A
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German (de)
English (en)
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EP1315847B8 (fr
EP1315847A2 (fr
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Yuri Alexandrovich Chervonenko
Igor Vladimirovich Nikitin
Igor Filippovich Pustovoy
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RVS TECHNOLOGY Ltd Oy
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RVS TEC Oy
RVS-TEC Oy
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Publication of EP1315847B8 publication Critical patent/EP1315847B8/fr
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Classifications

    • 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
    • C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
    • C23C10/18—Solid state diffusion of only metal elements or silicon into metallic material surfaces using liquids, e.g. salt baths, liquid suspensions
    • 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
    • C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
    • C23C10/18—Solid state diffusion of only metal elements or silicon into metallic material surfaces using liquids, e.g. salt baths, liquid suspensions
    • C23C10/26—Solid state diffusion of only metal elements or silicon into metallic material surfaces using liquids, e.g. salt baths, liquid suspensions more than one element being diffused
    • 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
    • C23C26/00—Coating not provided for in groups C23C2/00 - C23C24/00
    • 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
    • C23C26/00—Coating not provided for in groups C23C2/00 - C23C24/00
    • C23C26/02—Coating not provided for in groups C23C2/00 - C23C24/00 applying molten material to the substrate
    • 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
    • C23C30/00—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process

Definitions

  • the invention refers to mechanical engineering and metallurgy and can be predominantly used for the development of ceramic metal alloys and surfaces based on ferrous and nonferrous metals that possess high tribotechnical characteristics, wear resistance, and corrosion stability, and also for restoration of worn-out metal surfaces by forming ceramic metal (hereafter "cermet”) layers upon them.
  • ceramic metal hereafter "cermet"
  • halide reacts with anti-friction alloy components of the friction surface with formation of halogenides of these components on the surface possessing high anti-friction properties.
  • Alkaline metals contained in the alloy react with water contained in lubricating oil, which results in the destruction of the alloy components tin, antimony or bismuth, whose fine particles react with halide.
  • Fine particles of tin, antimony or bismuth halogenides diffuse, under the high pressure effect of lubricating oil, into anti-friction alloy of the friction surface, which results in restoration of the surface by covering it with a thin, elastic, wearresistant layer of soft metal.
  • Another known mixture is used in the method of roller bearing processing prior to operation ( SU 1196552, 1985 ); it contains copper powder in the amount of 16 - 20 % of the mass of the mixture, lead powder in the amount of 4 - 6 % of the mass of the mixture, polytetrafluoroethylene powder in the amount of 1- 2 % of the mass of the mixture, and soap lubricant grease in the amount of 72 - 79 % of the mass of the mixture.
  • Introduction of designated mixture into roller bearing provides the finish upgrading and reduces the friction coefficient and wear intensity.
  • lubricant that is used in the method of friction pair processing ( SU 1668471, 1991 ), and contains lubrication oil, metal-containing additives, for example copper- or zinc-based, and abrasive particles, for example of aluminium oxide with dispersity up to 10 ⁇ m.
  • metal-containing additives for example copper- or zinc-based
  • abrasive particles for example of aluminium oxide with dispersity up to 10 ⁇ m.
  • the friction pair performing the function of cathode is treated under operating load, speed and temperature, with an anode insulated from friction pair and made of additive material introduced into lubrication zone.
  • Particles of additive metal are deposited first of all within the surface microroughnesses, which improves the fineness of the friction surface treatment. Fine abrasive particles deposited along with metal particles improve the wear resistance of the deposited metal coating.
  • All said known compounds based on metal powders and organic binder improve the wear resistance only due to friction coefficient reduction, being a result of either surface smoothing, due to filling of the friction surface microroughnesses with particles of the compound, or formation at the surface of chemical compounds with high antifriction properties. In some cases it is accompanied by the formation at the friction surface of finest films that negligibly compensate their wear.
  • the drawbacks of said compounds are the low strength and corrosion resistance of friction surfaces obtained with their aid.
  • tribotechnical compounds are known to form a film on friction surfaces with a predominant content of iron based on fine-grained mixture of minerals and organic binder:
  • Said tribotechnical compounds are subjected to mechanical activation differing in conditions and means of achievement, arranged between friction surfaces, and bedded in.
  • the formed servovite films restore the worn friction surfaces and possess the cermet properties, due to which they favor the enhancement of corrosion and wear resistance and decrease of the friction coefficient.
  • said servovite films possess low durability due to fragility and possible lamination, and also non-uniformity of thickness and structure heterogeneity, which is the result of the nature of their formation process at the bedding-in stage, which is rather spontaneous than controllable.
  • Such servovite films can only be formed on friction surfaces with a predominant iron content, and therefore the designated known tribotechnical compounds cannot be used for modification and restoration of friction surfaces made of other metals and alloys.
  • the process of servovite film formation is connected with bedding-in process in the operating mode or similar modes, which restricts the area of tribotechnical compounds application, as it enables to apply them for the purposes of modification and restoration of friction surfaces only, and exclusively when a machine is repaired without dismantling.
  • the rehabilitation compound may be considered that is used in the method of formation of protecting coating selectively compensating the wear of friction and contact surfaces and the machine parts ( RU 2135638, 1999 , C 23 C 26 / 00).
  • the rehabilitation compound chosen to be the prototype is used for wear resistant coating deposition upon friction and contact surfaces of iron-based alloys, and contains fine-grained mixture with the dispersity of 5 - 10 ⁇ m of ophite in the amount of 50-80% of the compound mass, nephrite in the amount of 10 - 40 % of the compound mass, shungite in the amount of 1- 10 % of the compound mass and catalyst in the amount up to 10 % of the compound mass.
  • this rehabilitation compound is introduced into standard lubricant and delivered along with the lubricant to friction surfaces, after which the friction surfaces are bedded in for 0.5 - 1.5 hours, and cermet protective coating of friction surfaces is formed in the course of machine operation.
  • the temperature in friction surface micro volumes rises, under the effect of friction, to 900 - 1200 °C.
  • reactions of replacement of magnesium atoms by iron atoms from crystal lattices of either steel or iron alloy, of which the friction surfaces are manufactured occur in the sites of crystal lattices of ophite and nephrite, being the components of the rehabilitation compound.
  • new heteroatomic crystals are formed, having more extended spatial structures, which contributes to the formation of a protective coating that compensates the preliminary wear of friction surfaces.
  • the formed cermet protective coating has a higher thickness and higher wear and corrosion resistance.
  • the process of the protective coating formation during machine operation is of a spontaneous, uncontrolled character, which results in the non-uniformity of its thickness and structure heterogeneity, and does not allow to obtain protective coatings with specified predictable parameters.
  • This feature, and the non-identity of the spatial configuration of the crystal lattice of ophite and nephrite minerals used as basic components of the known rehabilitation compound result in an insufficient strength of the formed cermet protective coating.
  • the scope of use of the known rehabilitation compound is restricted by its application to restoration of friction surfaces made exclusively of iron-based metals and alloys, and in the process of machine operation only.
  • the known rehabilitation compound has a limited storage time, which is related to the increase of the compound dispersity with time due to so-called cohesion, provided by coagulation of individual particles of the compound with each other under the effect of Van der Waals forces.
  • the purpose of the invention is to provide a composition for modification of metals and metal surface restoration, forming a cermet that possesses high strength, structure homogeneity and thickness uniformity, with specified predictable parameters, both in the bulk and on the surface of ferrous and non-ferrous metals and alloys, having a long storage time, and also allowing for the application range extension of said compound.
  • composition for modifying metals and restoring metal surfaces containing fine-grained mixture of serpophite and catalyst in accordance with the invention differs from the above known prototype by additionally containing kaolinite and crystallizer (crystallizing agent) at the following component ratio: serpophite - 40 - 70 %, kaolinite - 10 - 40%, crystallizer or crystallizing agent - 5 - 10% and catalyst - 5 - 10% of the total compound mass.
  • the mixture dispersity is 0.1 - 10.0 ⁇ m
  • amesite is used as the kaolinite
  • pyrolusite is used as the crystallizer
  • metasilicate is used as the catalyst.
  • serpentine group as the mineral that has the very kaolinite type crystal lattice of serpophite and kaolinite, for example amesite, in the proposed compound for modifying metals and restoring metal surfaces provides higher strength and homogeneity of modified metals, as well as larger thickness, homogeneity and durability of the restored metal surface with a simultaneous enhancement of the binding of the layer with the surface on which it is formed.
  • the cleaning of the friction surface microrelief is carried out by fine particles of minerals, being the components of the proposed compound, and these particles are work hardened into the purified microrelief of the friction surfaces.
  • the friction and grinding of the particles of the compound on the friction surfaces and the clean-out of the microroughness of these surfaces induce energy evolution, resulting in the surfaces being treated heating up to the temperature of 700-1200 °C in the microvolumes of the friction surfaces. Similar heating renders the surface layers of the friction body metal up to either fluidity or a state close to it. This results in intensive diffusion of particles of the proposed compound into the surface layer of the metal.
  • the basis of the proposed compound are serpophite, corresponding to the formula of Mg 3 [Si 2 O 5 ](OH) 4 and kaolinite, for example amesite, having the formula of (Mg 2 A1)[(SiA1)O 5 ](OH) 4 .
  • the metal atoms of the friction surfaces substitute the magnesium atoms at the sites of the serpophite crystal lattice and magnesium and aluminium atoms at the sites of the amesite crystal lattice.
  • the atoms of the friction surface metal replace, first of all, those magnesium and aluminium atoms that are located at the sites of the surface layers of serpophite and amesite crystal structures respectively.
  • aluminium atoms at the sites of the amesite crystal lattice can be replaced not only by iron atoms of the friction surfaces, but also by atoms of basic nonferrous metals used in mechanical engineering, as for example those of copper and zinc. Therefore the proposed compound can be used for modifying and restoring surfaces of both ferrous and non-ferrous metals and alloys.
  • metasilicate as a catalyst and a lower dispersity of the compound enable to reduce to 400 - 700 °C the temperatures in microvolumes of the friction surfaces, on which the designated substitution reactions take place.
  • the cermet layer is formed on the friction surfaces being restored.
  • the basis of the proposed compound are serpophite and one of kaolinites, for example, amesite, that possess an identical, so-called kaolinite-like structure of the crystal lattice. They represent fibrous-tubular and coiled (roll) conglomerate crystals composed of a complex composition of octahedral- and tetrahedral-type plane crystals. Owing to the identity of the crystal lattice structures, the designated minerals appear to be more compatible, and therefore the obtained cermet layer possesses higher strength, durability, and structural homogeneity, and it also has stronger bonding with the friction surface being restored. Besides, the use of serpophite and kaolinite, such as amesite, that possess more extended spatial structures of their crystals than minerals used in the known compounds, promotes the increase of the cermet layer thickness of the surface being restored.
  • Pyrolusite used in the proposed compound as a crystallizer has the formula of MnO 2 • H 2 O, i.e. it contains constitution water in a bound state and provides the accomplishment of control function of the cermet layer formation process.
  • the choice of the dispersity and the per-cent content of pyrolusite in the proposed compound enables to ensure the opportune liberation of a necessary amount of the bound constitution water with the account of both the current temperature values in the micro volumes of the surface being restored and the time of its effect, and thus to stimulate the opportune cooling and crystallization of the formed cermet layer, when its parameters achieve the specified predicted values.
  • This provides the controllability of the process of ceramics metal formation with such specified predictable parameters as the thickness, microhardness and roughness of the layer, which depend on the number of bonds formed as a result of the substitution reactions, i.e. on the temperature and the time of its occurrence.
  • the pyrolusite available in the proposed compound as a crystallizer prevents the coagulation of fine-grained particles of the compound and their sticking to each other due to the enveloping ability of the aqueous films resistance to destruction, which are formed from water evolved from the crystallizer. As a result, no essential dispersity increase occurs during the storage of the compound. Therefore, the admissible storage time of the proposed compound can be considerably extended.
  • the proposed compound for modifying metals and restoring metal surfaces represents a mixture with the dispersity of 0.1 - 10.0 ⁇ m, which contains serpophite in the amount of 40 - 70 % of the compound mass, kaolinite, for example amesite, in the amount of 10 - 40% of the compound mass, crystallizer, for example pyrolusite,- in the amount of 5 - 10% of the compound mass, and catalyst, for example metasilicate, in the amount of 5 - 10% of the compound mass.
  • the designated qualitative and quantitative ratio of the compound components is the most acceptable, and when it falls beyond the scope of the claimed ratio ranges, the technical result declared above is not achieved.
  • the necessary range of the compound dispersity is also the most acceptable, as the increase of the compound particle sizes above 10 ⁇ m results in essential productivity decrease of the cermet formation process, and the decrease of the cermet homogeneity, while the decrease of particle sizes to the values below 0.1 ⁇ m also results in productivity decrease, as the intercrystalline bonds in the minerals used in the compound are broken.
  • the proposed compound may be manufactured in the following basic stages:
  • "Volga" car internal combustion engine with the parameters as follows:
  • the proposed compound containing serpophite in the amount of 70 % of the compound mass, amesite in the amount of 20% of the compound mass, pyrolusite in the amount of 5 % of the compound mass and metasilicate in the amount of 5 % of the compound mass, along with standard lubricant, on the basis of 0.002 g of the compound per 100 g of standard lubricant, was placed into the friction area of roller bearings of Type 204 produced by the Vologda State Bearing Factory (USD) and by SKF, and of slider bearings manufactured in the laboratory of "Vserossiysky Nauchno-Issledovatelsky Institute podshipnikovoiy promyshlennosty" (All-Russia Research Institute of Bearing Industry), Moscow, Russian Federation. The bearings were subjected to bedding-in under operating conditions for 1-5 hours.
  • the functional surfaces of external and internal rings, and the rolling elements of the roller bearings had the roughness of 0.08-0.10 ⁇ m and the microhardness of - 58-59 HRC. After the bedding-in their roughness was 0.013-0.020 ⁇ m and microhardness - 60-62 HRC, the radial gap being decreased by 1.0 -1.5 ⁇ m.
  • the sliding bearing manufactured from steel with subsequent quenching had the roughness of functional surfaces of 5.5-5.7 ⁇ m and the microhardness of - 38-40 HRC. After the bedding-in its roughness was 0.8-1.4 ⁇ m and the microhardness - 46-48 HRC.
  • the proposed compound containing serpophite in the amount of 40 % of the compound mass, amesite in the amount of 40% of the compound mass, pyrolusite- in the amount of 10 % of the compound mass, and metasilicate in the amount of 10 % of the compound mass, was added to a mixture of industrial oil and kerosine, placed in industrial solvent tank with magnetostrictive unit (magnetostrictor). Samples of roller bearings of the type 302 and drills of different diameters were processed in the tank during 10-60 minutes by using ultrasonic radiation with the power of 0.4 - 4.0 kW and the frequency of 22 - 24 kHz.
  • roller bearings After treating of the roller bearings with the compound, their operation time, without lubricating till seizure under the loads of 40-80 kg and rotation with angular velocity of 42 s -1 , increased from 5-6 min up to 46-50 min, and the time of cutting steel by drills till cutting edge fusion and cutting angle change under loads of 10-45 kg increased from 9-10 min up to 37-40 min.
  • the proposed compound containing serpophite in the amount of 55 % of the compound mass, amesite in the amount of 35% of the compound mass, pyrolusite in the amount of 5 % of the compound mass, and metasilicate in the amount of 5 % of the compound mass, was introduced into the lubricating oil of a compressor, after which the compressor was bedded-in under operating conditions.
  • the analysis of connecting rod pins of the low and high pressure cylinders of the compressor made of steel and carbon steel respectively was carried out in the physical metallurgy laboratory of the State Technological University in Chita, Russian Federation.
  • cermet layers were formed on friction surfaces made of both ferrous and nonferrous metals.
  • their service life between repairs increased by approximately a factor of 2.7.
  • the formed cermet layers noticeably decreased the friction coefficient between the shaft and the slider bearing made of steel and babbit respectively, which resulted in an increase of the impeller angular velocity by 13-28 %.
  • the decrease of fuel consumption was noted to be 16 - 24 % with the diesel engine running idle, its power output simultaneously increasing.
  • the proposed compound was applied to restore of irregularly worn surfaces of Beumer automatic palletizer guides, and to increase their lifetime, at OAO Dry Mixtures Pilot Plant, Moscow, Russian Federation.
  • the compound contained serpophite in the amount of 70 % of the compound mass, amesite in the amount of 18 - 20% of the compound mass, pyrolusite in the amount of 5 -7 % of the compound mass, and metasilicate in the amount of 5 % of the compound mass, and was deposited upon surfaces of guides along with the standard lubricating oil as an organic binder.
  • the compound Due to irregularity of the wear rate, in order to restore the horizontal position of the automatic palletizer guide surfaces, the compound was deposited on their different sections with different contents of amesite and pyrolusite and with a different dispersity.
  • the compound was used with the dispersity of 5 - 7 ⁇ m and the amesite content of 20% of the compound mass, and pyrolusite, in the amount of 5 % of the compound mass, while for the sections with the lowest wear rate, the applied compound had the dispersity of 1 - 3 ⁇ m and the amesite content of 18 % of the compound mass, and pyrolusite, in the amount of 7 % of the compound mass.
  • the guide surfaces were leveled due to cermet layer formation with the thickness from 0.1 to 1.1 ⁇ m at different sections, depending on the amesite and pyrolusite content and the dispersity, in accordance with the value of the preliminary wear. Besides, the gap between the guides and the carriages moving along them was decreased by 1.0-1.5 ⁇ m.
  • This example confirms the controllability of the cermet layer formation process, and formability of a layer with specified predictable parameters, such as thickness, by varying the compound dispersity value and the content of pyrolusite as a crystallizer.
  • the proposed compound for metal modification and metal surface restoration due to serpophites and kaolinites contained therein, such as amesite, provides obtaining both the structure of modified metal, possessing high strength and homogeneity, and the restored metal surface with larger thickness, homogeneity and durability, with simultaneous bond strengthening of the restoring cermet layer with the surface of its formation.
  • pyrolusite as a catalyst in the proposed compound, with the variable content of amesite and pyrolusite in the compound, and variable dispersity, makes the process of the cermet layer formation controllable, which enables to obtain cermet layers with specified predictable parameters such as the layer thickness, microhardness, and roughness.
  • pyrolusite contained in the proposed compound prevents its dispersity from increasing during the storage of the compound, offering an essential increase of its storage time.
  • kaolinite contained in the proposed compound of kaolinite for example amesite, it can be applied in the industry for surface modification and restoration of both ferrous and nonferrous metals and alloys.
  • the proposed compound Since heating necessary for the cermet layer formation can be obtained in the application of the proposed compound by several types of energetic effects, for example, by friction of the surfaces being processed, by thermal heating of completed parts, melting of a mixture of a metal and the proposed compound, treatment of part surfaces by ultrasonic radiation, or otherwise, the proposed compound may be applied not only to the modification and restoration of metal surfaces, but also for the modification of metals and alloys throughout their whole bulk. Such diversity of energetic treatment methods during metal modification and metal surface restoration greatly expands the scope of the industrial applicability of the proposed compound.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Lubricants (AREA)
  • Chemically Coating (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)
  • Powder Metallurgy (AREA)

Claims (5)

  1. Composition destinée à la modification de métaux et à la restauration de la surface de métaux par substitution métallique lors d'un processus de formation de couche de "cermet" (composite céramique-métal), la composition contenant un mélange à fine granulométrie de serpophite et d'un catalyseur, caractérisée en ce qu'elle contient :
    - de 40 à 70 % en poids de serpophite,
    - de 10 à 40 % en poids de kaolinite,
    - de 5 à 10 % en poids d'un agent cristallisant qui contrôle la fonction du processus de formation de couche de "cermet", et
    - de 5 à 10 % en poids d'un catalyseur qui réduit la température de substitution de métal à la surface du métal.
  2. Composition selon la revendication 1, caractérisée en ce que la polydispersité du mélange se situe dans la plage de 0,1 à 10,0 µm.
  3. Composition selon la revendication 1 ou 2, caractérisée en ce que la kaolinite est l'amesite.
  4. Composition selon l'une quelconque des revendications 1, 2 et 3, caractérisée en ce que l'agent cristallisant est la pyrolusite.
  5. Composition selon l'une quelconque des revendications précédentes, caractérisée en ce que le catalyseur est le métasilicate.
EP01970396A 2000-08-31 2001-08-29 Compose destine a la modification de metaux et la restauration de la surface de metaux Expired - Lifetime EP1315847B8 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
RU2000122650/02A RU2169208C1 (ru) 2000-08-31 2000-08-31 Состав для модифицирования металлов и восстановления металлических поверхностей
RU2000122650 2000-08-31
PCT/RU2001/000355 WO2002018673A2 (fr) 2000-08-31 2001-08-29 Compose destine a la modification de metaux et la restauration de la surface de metaux

Publications (3)

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EP1315847A2 EP1315847A2 (fr) 2003-06-04
EP1315847B1 true EP1315847B1 (fr) 2007-07-11
EP1315847B8 EP1315847B8 (fr) 2007-09-19

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EP (1) EP1315847B8 (fr)
AT (1) ATE366832T1 (fr)
AU (1) AU2001290397A1 (fr)
DE (1) DE60129340D1 (fr)
RU (1) RU2169208C1 (fr)
WO (1) WO2002018673A2 (fr)

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RU2266979C1 (ru) * 2004-10-28 2005-12-27 Червоненко Юрий Александрович Состав для формирования новообразованного слоя на трущихся металлических поверхностях
DE102004058276A1 (de) * 2004-12-02 2006-06-08 Rewitec Gmbh Zuschlagstoff zur Beimischung in einen Betriebsstoff einer technischen Anlage, Verwendung eines Zuschlagstoffs und Verfahren zur Oberflächenbehandlung von Arbeitskomponenten einer technischen Anlage
ITLU20050017A1 (it) * 2005-06-17 2006-12-18 C A T S R L Clean Advanced Tec Composto nanometrico anti-attrito e anti-usura (per ingranaggi metellici in attrito)
US7304020B1 (en) 2006-08-21 2007-12-04 Dmitry Tananko Nano-particle metal treatment composition for creating a ceramic-metal layer
EP2628808A1 (fr) 2012-02-15 2013-08-21 Longevity Engineering SA Durcissement localisé des surfaces métalliques
RU2597849C1 (ru) * 2015-03-12 2016-09-20 Елена Валерьевна Черногиль Способ восстановления поверхностей трения трибосистем
CN113931748B (zh) * 2020-06-29 2022-10-11 中国航发商用航空发动机有限责任公司 航空发动机滑油系统及其控制方法、航空发动机

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RU2149741C1 (ru) * 1997-04-30 2000-05-27 Никитин Игорь Владимирович Способ безразборного восстановления трущихся соединений
RU2135638C1 (ru) * 1998-11-26 1999-08-27 Никитин Игорь Владимирович Способ образования защитного покрытия, избирательно компенсирующего износ поверхностей трения и контакта деталей машин

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EP1315847B8 (fr) 2007-09-19
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DE60129340D1 (de) 2007-08-23
ATE366832T1 (de) 2007-08-15
EP1315847A2 (fr) 2003-06-04
AU2001290397A1 (en) 2002-03-13
RU2169208C1 (ru) 2001-06-20

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