EP1307598B1 - Procede et dispositif de generation de nanostructures - Google Patents
Procede et dispositif de generation de nanostructures Download PDFInfo
- Publication number
- EP1307598B1 EP1307598B1 EP01960844A EP01960844A EP1307598B1 EP 1307598 B1 EP1307598 B1 EP 1307598B1 EP 01960844 A EP01960844 A EP 01960844A EP 01960844 A EP01960844 A EP 01960844A EP 1307598 B1 EP1307598 B1 EP 1307598B1
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- Prior art keywords
- balls
- given
- nanostructures
- metal part
- thickness
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- 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.)
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Classifications
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- 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
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/02—Pretreatment of the material to be coated
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D7/00—Modifying the physical properties of iron or steel by deformation
- C21D7/02—Modifying the physical properties of iron or steel by deformation by cold working
- C21D7/04—Modifying the physical properties of iron or steel by deformation by cold working of the surface
- C21D7/06—Modifying the physical properties of iron or steel by deformation by cold working of the surface by shot-peening or the like
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2201/00—Treatment for obtaining particular effects
- C21D2201/03—Amorphous or microcrystalline structure
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/47—Burnishing
- Y10T29/479—Burnishing by shot peening or blasting
Definitions
- the present invention relates to a method for the treatment of nanostructures on metal parts and a device for the treatment of nanostructures.
- Nanocrystalline materials are characterized by ultra fine grains typically less than 100 nm in at least one dimension. These materials produced by known processes such as, for example, IGC (inert gas condensation and consolidation) by condensation and consolidation in a gas inert, SPD (severe plastic deformation) intense plastic deformation, etc ... These methods have the disadvantage of generating materials that are not without porosity, contamination and of sufficient size for industrial applications.
- the object of the invention is to create on the surface of the material a layer of this same material with grains of component of a few tens of nanometers forming what is commonly called a layer of nanoscale microstructures or nanostructures.
- TaO N.R. et al “Surface nanocrystallization of iron induced by ultrasonic shot peening, NanoStructured Materials, Elsevier Sciences Ltd, 11, 4, June 1999, also describes a method of curing, by ultrasound of metal parts. of the balls are projected with displacement of the point of impact so as to cover the entire surface to be treated. In this type of process, the material obtained has a nanocrystalline structure whose thickness is not controlled.
- the present invention therefore aims to overcome the disadvantages of the prior art by proposing a method for treating nanostructures to obtain in a defined area of a workpiece, properties physicochemicals that can not be obtained in the usual processes.
- This goal is obtained by the process of generating nanostructures for to obtain on a zone of the surface of a metal part a layer of nanostructures of defined thickness, the process comprising the steps given in claim 1.
- Another object of the invention is to propose a device for treatment of nanostructures making it possible to obtain properties on a part determined physicochemicals.
- the principle of the invention is to perform a surface treatment of a metal part to modify the mechanical characteristics of the metal part, benefiting from the modification of the diffusion properties in the surface layer of the treated surface.
- the mechanical properties of the microstructures nanoscale or nanostructure are well known. Indeed, the bigger the size metal grains is weak, the greater the mechanical strength of the piece is big.
- current research aims to develop processes for making it possible to obtain parts consisting solely of nanostructures.
- the object of the invention is quite different, it consists of via a method for generating nanostructures (described in later) to make a surface layer of nanostructures giving the whole part the properties, for example mechanical (fatigue, wear or friction, corrosion under tension, etc ...) desired, this being sufficient to guarantee the properties targeted for the piece.
- the size of the grains of metal from the surface of the room.
- the grains have a dimension of the order of 100 .mu.m.
- the grain size is only of the order of a few tens of nanometers. To reduce the size of grains on an entire surface, one must create on the surface of the material a plastic deformation in all directions and randomly.
- FIG. 1 represents a diagram of a device for generating nanostructures by bombardment in an acoustic insulation enclosure (25).
- a method of generating ultrasonic nanostructures or compressed air is already known.
- the results obtained with this method are not sufficient in many case. Indeed, one obtains nanostructures on a very small thickness of the piece that is of the order of one micron.
- the principle of generation of nanostructures by bombardment according to Figure 1 is to put the balls (22) in motion, via a projection nozzle (23) of balls (22) perfectly spherical.
- the nozzle (23) is mounted in an enclosure (20) whose walls allow the ricochet of the balls, on an axis of rotation (230) to be able to rotate in directions A, B so that it can be scanned from a determined location of the axis of rotation (230), the entire surface to be treated.
- the axis of the nozzle is mounted on a movable assembly in translation in three directions (C, D, G) parallel to the surface to be treated. So, in their movement, the balls (22) will strike each surface element of the piece (10), a large number of times, according to different incidence directions and varied, creating at each impact a plastic deformation of the grains consisting of an agglomerate of molecules of the material or alloy, having a any sense.
- the workpiece (10) is held in position by means (21) gripping device blocking the part (10) in translation and in rotation and allowing the adjustment of the distance of the part from the source of emission of projectiles.
- the enclosure includes means of recovery and fast recycling of the balls towards the nozzle (23) so that only a quantity determined of balls is used in the enclosure of the apparatus.
- These means are, for example, constituted by a shape of the enclosure, for example in a bowl conical or hemispherical, favoring the gravity recovery of the balls and a orifice (200) located in this zone for driving, by a flexible system (240), the balls towards the nozzle (23).
- the nozzle may be fixed, the piece is set in motion similar.
- acoustic enclosure (25) sealed are provided means (26) of diffusion or vaporization allowing the realization of one or more chemical treatments or thermochemicals described below, possibly associated with means of heating the enclosure or room
- Each device generating nanostructures is formed in an unsealed manner for chemical treatments by diffusion or vaporization or other.
- the bowl (20) can be provided with channels (28) for fluid circulation, or a space (27) can be provided between the workpiece or its support and the bowl (22).
- nanostructures on the treated surface of the room causes a modification of the diffusion law in the treated area. Indeed, the multiplication of metal grains also multiplies the number of boundaries between the grains. These borders then constitute as many channels nanoscale for the diffusion of chemical compounds having a size of the order of a few atoms. So, these compounds can penetrate more deeply and more importantly in the treated surface of the room, this which makes it possible to obtain mechanical, physical or chemical properties interesting.
- FIGS. 5A and 5B show the curve representing the rate and penetration of nitrogen during ionic nitriding for a temperature of 550 ° C and 350 ° C.
- the curve shown in FIG. 5A corresponds to the measurement of the nitrogen content as a function of the thickness of the surface treated, when the part has undergone nitriding for two hours at a temperature of 550 ° C.
- the curve in solid line corresponds to the measurement carried out for a previously treated surface according to the method of generating nanostructures according to the invention.
- the nanostructure generation process of the surface made it possible to obtain a nanostructure over a thickness of about 20 .mu.m.
- the dashed line curve corresponds to the measurement made for a surface not treated by generation of nanostructures.
- the level of nitrogen having penetrated for the nitriding treatment at 550 ° C is uniform in the thickness of the piece and equal to 5%.
- the nitrogen content is five times the rate of the untreated piece, in the thickness in which nanostructures have formed. Then, in the thickness of the piece no longer includes nanostructures, the nitrogen rate decreases rapidly up to a rate corresponding to the rate obtained according to the nitriding process of the prior art.
- This treatment makes it possible to obtain microstructures of material more favorable towards fatigue, fatigue by small deflection (fretting fatigue) and contact fatigue.
- the curve shown in Figure 5B corresponds to the rate measurement of nitrogen depending on the thickness of the treated surface, when the part has undergone nitriding for two hours at a temperature of 350 ° C.
- the curve in solid line corresponds to the measurement made for a surface previously treated according to the method of generating nanostructures according to the invention.
- the mixed line curve corresponds to the measurement made for a surface not processed by generation of nanostructures.
- the generation treatment of nanostructures of the surface allowed to obtain a nanostructure on a thickness of 20 ⁇ m. It can be seen that according to the prior art, the nitrogen content is uniform in the thickness of the room and equal to 1%. This rate is too low for satisfactorily modify the mechanical properties of the surface of the room.
- the nitrogen content is 17 times higher than the rate of the non treated on the surface. Then, the nitrogen content decreases slowly in the thickness of the part comprising the nanostructure, to end up being equal to the rate obtained according to the nitriding method of the prior art when the layer of the piece does not includes more nanostructures.
- the nitriding process according to the prior art does not realizes that from a certain temperature, for example around 550 ° C, for a piece of pure iron. It can therefore be seen that the prior treatment of the piece allows, not only to obtain a good structure on the surface of a room, but also allows to lower the processing temperature by retaining, in the case of treatment at 350 ° C, a nitrogen level greater than rate obtained without treatment by generation of nanostructures according to the invention.
- the pretreatment according to the method of generating nanostructures of the invention also makes it possible to reduce the duration of the treatment. Indeed, the presence of nanostructures and in particular the canals nano-diffusion, allows faster diffusion of compounds in the superficial layer of the room.
- the surface to be treat can be put under mechanical stress, for example by clamping the piece (10) with suitable gripping means (21).
- suitable gripping means (21) are, for example, constituted by a sole (21.2) on which clamps (21.1) are mounted to clamp the workpiece against a shim protector (21.3) interposed between the workpiece (10) and the sole (21.2).
- a rod (21.4) passing through the sole (21.2) and the shim (21.3) applies a force on the piece (10) retained by the flanges (21.1).
- the pressure force can be obtained by threading the rod 21.4 and screwing it into a threaded hole (21.21) formed in the sole (21.2).
- the invention is not limited to the embodiments described but encompasses any mode of applying mechanical stresses into one or several places in a room.
- several rods can be provided for apply different constraints in several places to obtain different thicknesses of nanostructures, proportional to the value of constraints applied to the respective points.
- traction means on each of the ends of the piece can put it under stress.
- These means are constituted, for example, by an upper plate (31) and a lower plate (32) held apart by a distance adjustable by means of three tie rods (33) arranged at 120 ° and urging the ends of the rendered part solidary of each tray.
- the piece can, for example, cross every plate by holes and come to rest against the surface of each plate turned outwards by means of rings forming shoulders and made integral with the ends of the part by a locking screw transverse to the ring.
- the trays, in particular that (32) oriented towards the zone emission of projectiles, are provided, as shown in FIG. 3B, recesses allowing the circulation and projection of the balls.
- FIG. 4 represents a diagram of another device for generating ultrasonic nanostructures that can be used for carrying out the invention and possibly with the stressing device shown in FIG. 2.
- the ultrasound device of FIG. 4 can also be used with the Fig. 3.
- the sonotrode (24) is secured to a bowl (20) whose upper orifice is closed by a device (21), for example of the type of FIG. 2, placing the workpiece under stress (10) to be treated.
- the device (21) is mounted relative to the bowl (20) on means allowing the adjustment of the distance between the face exposed to the bombardment and the bottom of the bowl (201) which constitutes the emission surface of the balls (22).
- the principle of moving the beads by ultrasound is to put the balls (22) in motion, via an ultrasonic generator (24) operating at a specified frequency, which communicates a movement of amplitude and speed determined in the bowl (20).
- the amplitude of the movement of the sonotrode can be chosen from a few microns to a few hundred microns.
- the balls (22) draw their energy from the movement of the bowl and will come strike the surface of the workpiece (10) a large number of times, according to angles variable and multiple incidents, creating at each impact a deformation plastic grains consisting of an agglomerate of molecules of matter or of the alloy, having any meaning.
- the ball having lost its energy at contact of the coin falls back on the walls of the bowl to acquire a new speed in a direction which, seen from the room, seems random but is determined by the physical laws.
- the applied stress can be thermal.
- the surface to be treated is heated, either completely to obtain a uniform thickness of nanocrystalline structures all over the surface of the piece subjected to the bombardment of logs, either locally to obtain thickness variations of nanocrystalline structures.
- means Radiation, conduction or convection heating are installed in the bowl or on the room or in the acoustic enclosure of the machine.
- the general principle for choosing the process parameters of generation of nanostructures according to the invention is that, the higher the kinetic energy ball is important, the higher the level of stress generated in the sub layer is important.
- the upper limit of the kinetic energy is defined, especially by the heating caused by the release of this energy kinetics during the impact on the surface to be treated and by the mechanical resistance balls and the material constituting the part. This disadvantage can be narrowed or removed by cooling the enclosure or room with a system cooling. Indeed, as explained above, the elevation of temperature tends to enlarge the grains of metal, and the material should not crack.
- the hardness of the balls plays a role, particularly in the transfer of the kinetic energy of the ball to the surface of the piece.
- the sound pressure generated by the sound waves influence also the process of generating the nanostructure.
- the generation of ultrasonic nanostructures or the projection of Beads can be made in a medium containing a specific gas determined to modify the mechanical behavior or the chemical composition the surface of the material during shocks of the balls.
- the processing time for the generation of nanostructures in alloys or common metallic materials is between 50 and 1300s and that the diameter of the balls used is included between 300 ⁇ m and 3mm. The total time required may be extended or reduced by function of the material. In fact for a determined bead size and a material determined, the generation time of nanostructures is determined according to the thickness of nanostructures desired by the user.
- the processing step is a nitriding comprising a nitrogen atmosphere of the piece (10) to to treat, at a specified temperature of between 350 and 550 ° C, during a fixed period of between 30 minutes and 10 hours.
- the processing step includes a carburizing in the metal structure of the room.
- the processing step includes a carbonitriding.
- the processing step includes a ionic implementation.
- the processing step includes a thermo-chemical treatment whose diffusion plays an active role.
- the projection step is carried out after filling with inert gas the enclosure in which is placed the device of generation of nanostructures.
- the projection step is carried out after filling the enclosure with chemically active gas.
- the generation method comprises a step of placing under mechanical and / or thermal stress of the part (10) metal to be treated.
- the step of projecting the balls (22) is performed by means of an ultrasonic generator (20) whose waves sound causes the balls (22) to move with random directions.
- the diameter of the balls (22) perfectly spherical is between 300 ⁇ m and 3mm depending on the desired thickness of the layer of nanostructures of a user.
- the duration of projection is determined according to the thickness of nanostructures desired by the user.
- the projection duration of the balls (22) is between 30 and 1300s.
- the treatment is carried out at low temperatures below room temperature.
- the device for generating nanostructures over a thickness of a metal part (10) comprising means for setting movement at a given speed of balls (22) of determined dimensions characterized in that the balls (22) used are perfectly spherical and that the means for setting in motion with a determined speed comprise means for obtaining variable angles of incidence for the same point of impact, means for reusing the balls (22) and means (26) diffusion of a chemical compound in a sealed enclosure (25).
- the generation device comprises means for stressing the metal part (10) and / or means for heating the workpiece (10).
- the means for setting in motion balls (22) comprise an ultrasonic generator (20) causing the movement of the balls (22) with random directions, the means of reuse of the balls (22) being constituted by the generator enclosure ultrasonic.
- the device for generating nanostructures comprises means for adjusting the distance (d) between the source of emission of the balls and the part to be treated.
- the distance is of the order of 4 to 40 mm.
- the distance is preferably the order of 4 to 5 mm.
- the device for generating nanostructures comprises means for adjusting the emission duration of the balls and their speed.
- the beads are of such an amount they occupy, when the means of movement in ultrasound are inactive, an area greater than 30% of the surface of the sonotrode.
- the speed is between 5 and 100m / s.
- the speed is of the order of 5 to 30m / s.
- the means for setting in motion balls (22) comprise means for projecting a jet of balls (22) with an angle of incidence of the balls (22) with respect to the surface of the piece (10), variable as a function of time and means to produce a displacement relative to the part of the projection means when several angles impact were produced on the same point of impact.
- the device for generating nanostructures includes means to perform local cooling of the treated area of the room.
- the projection duration of the balls (22) is between 30 and 1300s
- the device is enclosed in a acoustic insulation enclosure (25).
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Crystallography & Structural Chemistry (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Heat Treatment Of Articles (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Description
- la figure 1 représente un schéma d'un dispositif de génération de nanostructures par bombardement.
- la figure 2A représente en coupe une variante de réalisation de l'invention avec application de contraintes;
- la figure 2B représente en coupe une vue de dessus de la cale utilisée dans la variante de réalisation de l'invention avec application de contraintes;
- la figure 3A représente une vue en élévation d'une deuxième variante de réalisation de l'invention avec application de contraintes;
- la figure 3B représente une vue de dessus du plateau inférieur de la deuxième variante de réalisation avec contraintes
- la figure 4 représente un schéma d'un autre dispositif de génération de nanostructures par ultrasons utilisable avec les dispositifs de mises sous contrainte représentés à la figure 2;
- les figures 5A et 5B représentent la courbe représentant le taux et la pénétration de l'azote durant un traitement nitruration ionique dans une pièce traitée selon le procédé de génération de nanostructures selon l'invention, respectivement pour une température de 550°C et 350°C.
- une étape de projection sur la surface de la pièce (10) à traiter, pendant une durée déterminée, à une vitesse déterminée et sous des incidences variables au même point d'impact, d'une quantité déterminée de billes (22) parfaitement sphériquess de dimensions déterminées et réutilisées en permanence pendant la projection ;
- réitération de l'étape précédente avec déplacement du point d'impact de façon que l'ensemble des points d'impact couvrent la totalité de la surface à traiter de la pièce ;
- une étape de traitement chimique pendant au moins une partie du temps de génération des nanostructures.
Claims (29)
- Procédé de génération de nanostructures pour obtenir sur une zone de la surface d'une pièce (10) métallique une couche de nanostructures d'épaisseur définie, le procédé comprenant :- une étape de mise en mouvement ou projection vers un point d'impact de la zone de surface de la pièce (10) à traiter, pendant une durée déterminée, à une vitesse déterminée, d'une distance déterminée et sous des incidences variables au même point d'impact, d'une quantité déterminée de billes (22) parfaitement sphériques, de dimensions déterminées et réutilisées en permanence pendant la projection,réitération de l'étape précédente avec déplacement du point d'impact de façon que l'ensemble des points d'impact couvrent la totalité de la surface à traiter de la pièce, de façon à générer une couche de nanostructure,une étape de traitement par diffusion de composés chimiques dans la couche de nanostructures avec élévation ou abaissement de température, l'étape de traitement étant effectuée au moins pendant ladite étape de projection des billes et dans une enceinte contenant un gaz de diffusion inerte ou chimiquement actif.
- Procédé de traitement de surface selon la revendication 1 caractérisé en ce que l'étape de traitement est une nitruration comprenant une mise sous atmosphère d'azote de la pièce (10) à traiter, à une température déterminée comprise entre 350 et 550°C, pendant une durée déterminée comprise entre 30 minutes et 10 heures.
- Procédé de traitement de surface selon la revendication 1 ou 2 caractérisé en ce que l'étape de traitement comporte une cémentation dans la structure métallique de la pièce.
- Procédé de traitement de surface selon la revendication 1ou 2 ou 3 caractérisé en ce que l'étape de traitement comporte une carbonitruration.
- Procédé de traitement de surface selon une des revendications 1 à 4 caractérisé en ce que l'étape de traitement comporte une implémentation ionique.
- Procédé de traitement selon une des revendications 1 à 5, caractérisé en ce qu'il comporte un traitement thermo-chimique dont la diffusion joue un rôle actif.
- Procédé de traitement de surface selon une des revendications 1 à 6, caractérisé en ce que l'étape de projection s'effectue après avoir rempli de gaz inerte l'enceinte dans laquelle est placé le dispositif de génération de nanostructures.
- Procédé de traitement de surface selon une des revendications 1 à 7, caractérisé en ce que l'étape de projection s'effectue après avoir rempli de gaz chimiquement actif l'enceinte.
- Procédé de génération de nanostructures selon la revendication 1, caractérisé en ce qu'il comporte une étape de mise sous contrainte mécanique et/ou thermique de la pièce (10) métallique à traiter pour le contrôle de l'épaisseur de structures nanocristallines.
- Procédé de génération de nanostructures selon la revendication 9, caractérisé en ce que l'étape de mise sous contrainte thermique peut être locale, pour modifier les caractéristiques surfaciques de la pièce (10) métallique à traiter.
- Procédé de génération de nanostructures selon la revendication 1, caractérisé en ce que l'étape de projection des billes (22) est réalisée par l'intermédiaire d'un générateur (20) ultrasonique dont les ondes sonores provoquent le mouvement des billes (22) avec des directions aléatoires.
- Procédé de génération de nanostructures selon l'une des revendications 1 à 4, caractérisé en ce que le diamètre des billes (22) parfaitement sphériques est compris entre 300µm et 3mm en fonction de l'épaisseur souhaitée de la couche de nanostructures.
- Procédé de génération de nanostructures selon l'une des revendications 1 à 5, caractérisé en ce que, pour une taille de bille déterminée, un matériau déterminé constituant la pièce (10), la durée de projection est déterminée en fonction de l'épaisseur de nanostructure souhaitée par l'utilisateur.
- Procédé de génération de nanostructures selon l'une des revendications 1 à 7, caractérisé en ce que la durée de projection des billes (22) est comprise entre 50 et 1300s.
- Procédé de génération de nanostructures selon l'une des revendications 1 à 14, caractérisé en ce que le traitement s'effectue à des températures basses inférieures à la température ambiante.
- Dispositif de génération de nanostructures pour la mise en oeuvre du procédé selon l'une quelconque des revendications 1 à 15, comprenant dans une enceinte étanche (25) des moyens de mise en mouvement à une vitesse déterminée de billes (22) de dimensions déterminées et parfaitement sphériques, lesdits moyens de mise en mouvement comportant des moyens d'obtention d'angles d'incidence variables pour le même point d'impact, des moyens de récupération et de réintroduction (200, 240) des billes (22) dans l'enceinte étanche (25), des moyens (26) de diffusion gazeuse d'un composé chimique dans une enceinte étanche (25) et des moyens de chauffage ou refroidissement.
- Dispositif de génération de nanostructures sur une épaisseur déterminée d'une pièce (10) métallique selon la revendication 16, caractérisé en ce qu'il comprend des moyens de mise sous contrainte de la pièce (10) métallique et/ou des moyens de chauffage de la pièce (10) pour le contrôle de l'épaisseur de structures nanocristallines.
- Dispositif de génération de nanostructures sur une épaisseur déterminée d'une pièce (10) métallique selon la revendication 16 ou 17, caractérisé en ce que les moyens de mise en mouvement des billes (22) comprennent un générateur (20) ultrasonique provoquant le mouvement des billes (22) avec des directions aléatoires, les moyens de réutilisation des billes (22) étant constitués par l'enceinte du générateur ultrasonique.
- Dispositif de génération de nanostructures sur une épaisseur déterminée d'une pièce (10) métallique selon une des revendications 16 à 18, caractérisé en ce qu'il comporte des moyens de réglage de la distance (d) entre la source d'émission des billes et la pièce à traiter.
- Dispositif de génération de nanostructures sur une épaisseur déterminée d'une pièce (10) métallique selon la revendication 17, caractérisé en ce que la distance est de l'ordre de 4 à 40 mm.
- Dispositif de génération de nanostructures d'une pièce (10) métallique selon la revendication 20, caractérisé en ce que la distance est de préférence de l'ordre de 4 à 5 mm.
- Dispositif de génération de nanostructures sur une épaisseur déterminée d'une pièce (10) métallique selon la revendication 16, caractérisé en ce qu 'il comporte des moyens de réglage de la durée d'émission des billes et de leur vitesse.
- Dispositif de génération de nanostructures d'une pièce (10) métallique selon la revendication 16 ou 18, caractérisé en ce que les billes sont d'une quantité telle qu'elles occupent, lorsque les moyens de mise en mouvement par ultrasons sont inactifs, une surface supérieure à 30% de la surface de la sonotrode d'un générateur (20) ultrasonique.
- Dispositif de génération de nanostructures sur une épaisseur déterminée d'une pièce (10) métallique selon une des revendications précédentes de dispositif, caractérisé en ce que la vitesse est comprise entre 5 et 100m/s.
- Dispositif de génération de nanostructures sur une épaisseur déterminée d'une pièce (10) métallique selon la revendication précédente de dispositif, caractérisé en ce que la vitesse est de l'ordre de 5 à 30m/s.
- Dispositif de génération de nanostructures sur une épaisseur déterminée d'une pièce (10) métallique selon la revendication 17, caractérisé en ce que les moyens de mise en mouvement des billes (22) comprennent des moyens de projection d'un jet de billes (22) avec un angle d'incidence des billes (22) par rapport à la surface de la pièce (10), variable en fonction du temps et des moyens de produire un déplacement relatif parallèlement à la pièce du moyen de projection lorsque plusieurs angles d'incidence ont été produits sur un même point d'impact.
- Dispositif de génération de nanostructures sur une épaisseur déterminée d'une pièce (10) métallique selon une des revendications précédentes de dispositif, caractérisé en ce qu'il comporte des moyens d'effectuer un refroidissement local de la zone traitée de la pièce.
- Dispositif de génération de nanostructures sur une épaisseur déterminée d'une pièce (10) métallique selon une des revendications précédentes de dispositif, caractérisé en ce que la durée de projection des billes (22) est comprise entre 30 et 1300s.
- Dispositif de génération de nanostructures sur une épaisseur déterminée d'une pièce (10) métallique selon une des revendications précédentes de dispositif, caractérisé en ce que le dispositif est enfermé dans une enceinte d'isolation acoustique (25).
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FR0009950A FR2812285B1 (fr) | 2000-07-28 | 2000-07-28 | Procede de traitement de nanostructures et dispositif de traitement de nanostructures |
FR0009950 | 2000-07-28 | ||
PCT/FR2001/002482 WO2002010462A1 (fr) | 2000-07-28 | 2001-07-27 | Procede de traitement de nanonstructures et dispositif de traitement de nanostructures |
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EP1307598A1 EP1307598A1 (fr) | 2003-05-07 |
EP1307598B1 true EP1307598B1 (fr) | 2005-01-05 |
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EP01960844A Expired - Lifetime EP1307598B1 (fr) | 2000-07-28 | 2001-07-27 | Procede et dispositif de generation de nanostructures |
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US (2) | US7691211B2 (fr) |
EP (1) | EP1307598B1 (fr) |
CN (1) | CN1176228C (fr) |
AU (1) | AU2001282241A1 (fr) |
DE (1) | DE60108252T2 (fr) |
FR (1) | FR2812285B1 (fr) |
WO (1) | WO2002010462A1 (fr) |
Cited By (1)
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RU2801452C2 (ru) * | 2018-11-14 | 2023-08-08 | ВАН, Цзяхао | Способ обработки магнитно-мягких металлических материалов |
Families Citing this family (35)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2812285B1 (fr) * | 2000-07-28 | 2003-02-07 | Univ Troyes Technologie | Procede de traitement de nanostructures et dispositif de traitement de nanostructures |
JP4112952B2 (ja) | 2002-11-19 | 2008-07-02 | 新日本製鐵株式会社 | 表層部をナノ結晶化させた金属製品の製造方法 |
JPWO2004059015A1 (ja) * | 2002-12-25 | 2006-04-27 | 新東工業株式会社 | 金属表面の微細化方法及びその金属製品 |
DE102006008210A1 (de) * | 2006-02-22 | 2007-08-23 | Mtu Aero Engines Gmbh | Strahlkammer zum Oberflächenstrahlen, insbesondere zum Ultraschall-Kugelstrahlen von Gasturbinen-Bauteilen |
JP4832970B2 (ja) * | 2006-07-06 | 2011-12-07 | 上村工業株式会社 | 小物の表面処理装置 |
DE102006036519A1 (de) * | 2006-08-04 | 2008-02-07 | Mtu Aero Engines Gmbh | Deckelelement für eine Sonotrode und Strahlkammeranordnung zum Oberflächenstrahlen von Bauteilen |
DE102006058679A1 (de) * | 2006-12-13 | 2008-06-19 | Mtu Aero Engines Gmbh | Vorrichtung und Verfahren zum Oberflächenstrahlen eines Bauteils einer Gasturbine |
JP5403906B2 (ja) * | 2007-12-20 | 2014-01-29 | 三菱重工業株式会社 | ショットピーニング装置及びショットピーニングの施工方法 |
FR2925522B1 (fr) * | 2007-12-21 | 2010-08-20 | Areva Np | Procede de traitement superficiel d'un alliage de zirconium ou de hafnium, et piece ainsi traitee |
KR100894499B1 (ko) * | 2008-05-14 | 2009-04-22 | (주)디자인메카 | 초음파 나노 개질기를 이용한 베어링 가공장치 및 가공방법 |
GB0902333D0 (en) | 2009-02-13 | 2009-04-01 | Rolls Royce Plc | A surface treatment device |
JP5072885B2 (ja) * | 2009-03-04 | 2012-11-14 | 三菱重工業株式会社 | ショットピーニング加工条件の設定方法 |
CN101899554A (zh) * | 2009-04-14 | 2010-12-01 | 香港理工大学 | 提高金属表面扩散率的方法及其应用 |
JP5669126B2 (ja) * | 2009-06-18 | 2015-02-12 | パナソニックIpマネジメント株式会社 | 光線反射防止用シボの形成方法および該方法によってシボが形成されたレンズ鏡筒 |
US20110252850A1 (en) * | 2010-04-14 | 2011-10-20 | Jian Lu | Method and device of enhancing diffusibility of metallic surfaces and applications thereof |
FR2970006B1 (fr) * | 2010-12-30 | 2013-07-05 | Wheelabrator Allevard | Traitement de surface d'une piece metallique |
FR2976589B1 (fr) * | 2011-06-17 | 2014-09-12 | Wheelabrator Allevard | Traitement de surface d'une piece metallique |
GB2492831A (en) * | 2011-07-14 | 2013-01-16 | Hkpb Scient Ltd | Workpiece surface modification during ultrasonic peening |
CN103046058B (zh) * | 2013-01-25 | 2014-11-26 | 山东大学 | 一种热气流喷射加热与喷丸实现渗氮或渗碳的方法 |
WO2015014319A1 (fr) | 2013-08-02 | 2015-02-05 | City University Of Hong Kong | Réseaux nanostructurés produits au moyen d'un procédé de traitement d'attrition mécanique de surface |
US9517545B2 (en) | 2013-08-02 | 2016-12-13 | Nano And Advanced Materials Institute Limited | Nanostructured-lattices produced by surface mechanical attrition treatment method |
US9809893B2 (en) | 2015-02-26 | 2017-11-07 | City University Of Hong Kong | Surface mechanical attrition treatment (SMAT) methods and systems for modifying nanostructures |
CN104878176B (zh) * | 2015-06-25 | 2017-02-22 | 南通河海大学海洋与近海工程研究院 | 棒状金属材料表面自纳米化装置 |
CN104911609B (zh) * | 2015-07-06 | 2017-07-11 | 东北大学 | 一种高强高韧细晶复合结构板材及其制造方法 |
CN106521398B (zh) * | 2016-07-10 | 2019-02-22 | 上海大学 | 钛合金表面等离子法喷涂搪瓷涂层的方法及热轧处理 |
CN107630126A (zh) * | 2017-08-07 | 2018-01-26 | 蔡晋 | 一种倾斜式超声喷丸强化设备 |
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CN109701948A (zh) * | 2019-01-28 | 2019-05-03 | 西安建筑科技大学 | 一种高耐磨性高硬度钛合金钻探杆的制备方法 |
CN110814645B (zh) * | 2019-10-18 | 2021-06-25 | 广州大学 | 一种用于圆柱推力滚子轴承滚道表面的微织构加工设备 |
CN111137849B (zh) * | 2019-12-30 | 2023-08-01 | 南京航空航天大学 | 一种渐进式金属表面微纳改性方法 |
CN111890233B (zh) * | 2020-08-05 | 2022-03-01 | 宁波志成丰和投资管理合伙企业(有限合伙) | 一种光学玻璃机械精抛系统及方法 |
CN112518594B (zh) * | 2021-02-08 | 2021-05-11 | 四川大学 | 一种压电振子阵列型超声喷丸强化装置 |
CN114635022B (zh) * | 2022-03-11 | 2023-08-04 | 中山大学 | 一种喷丸距离连续可调的深冷超声喷丸装置及方法 |
CN116213751A (zh) * | 2022-12-13 | 2023-06-06 | 浙江大学 | 一种316l不锈钢表面处理方法 |
CN117821891A (zh) * | 2024-02-23 | 2024-04-05 | 重庆纳米金属研究院 | 一种实现金属材料表层自润滑功能的方法 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2542955A (en) * | 1945-04-18 | 1951-02-20 | Ford Motor Co | Shot peening |
US4415378A (en) * | 1982-04-22 | 1983-11-15 | Dana Corporation | Case hardening method for steel parts |
SU1655997A1 (ru) * | 1988-04-07 | 1991-06-15 | Предприятие П/Я Р-6930 | Способ упрочнени внутренней поверхности полых изделий |
FR2678537B1 (fr) * | 1991-07-03 | 1993-09-17 | Snecma | Procede de grenaillage de pieces a methode de mesure d'intensite et installation de mise en óoeuvre. |
FR2689431B1 (fr) * | 1992-04-06 | 1995-10-20 | Teknoson | Procede et dispositif notamment de durcissement par ultrasons de pieces metalliques. |
GB9404268D0 (en) * | 1994-03-05 | 1994-04-20 | Univ Nottingham | Surface treatment of shape memory alloys |
FR2812285B1 (fr) * | 2000-07-28 | 2003-02-07 | Univ Troyes Technologie | Procede de traitement de nanostructures et dispositif de traitement de nanostructures |
AU2001284087A1 (en) | 2000-07-28 | 2002-02-13 | The Institue Of Metal Research (I.M.R.) | Mechanical method for generating nanostructures and mechanical device for generating nanostructures |
-
2000
- 2000-07-28 FR FR0009950A patent/FR2812285B1/fr not_active Expired - Fee Related
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2001
- 2001-07-27 DE DE60108252T patent/DE60108252T2/de not_active Expired - Lifetime
- 2001-07-27 CN CNB011229810A patent/CN1176228C/zh not_active Expired - Fee Related
- 2001-07-27 EP EP01960844A patent/EP1307598B1/fr not_active Expired - Lifetime
- 2001-07-27 US US10/343,009 patent/US7691211B2/en not_active Expired - Fee Related
- 2001-07-27 WO PCT/FR2001/002482 patent/WO2002010462A1/fr active IP Right Grant
- 2001-07-27 AU AU2001282241A patent/AU2001282241A1/en not_active Abandoned
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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RU2801452C2 (ru) * | 2018-11-14 | 2023-08-08 | ВАН, Цзяхао | Способ обработки магнитно-мягких металлических материалов |
Also Published As
Publication number | Publication date |
---|---|
US7691211B2 (en) | 2010-04-06 |
AU2001282241A1 (en) | 2002-02-13 |
WO2002010462A1 (fr) | 2002-02-07 |
DE60108252D1 (de) | 2005-02-10 |
US20070006943A1 (en) | 2007-01-11 |
FR2812285B1 (fr) | 2003-02-07 |
EP1307598A1 (fr) | 2003-05-07 |
US20040250920A1 (en) | 2004-12-16 |
US7300622B2 (en) | 2007-11-27 |
FR2812285A1 (fr) | 2002-02-01 |
CN1336445A (zh) | 2002-02-20 |
CN1176228C (zh) | 2004-11-17 |
DE60108252T2 (de) | 2006-01-26 |
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