WO2005068679A1 - Procede d'activation de surface d'un element metallique - Google Patents

Procede d'activation de surface d'un element metallique Download PDF

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Publication number
WO2005068679A1
WO2005068679A1 PCT/JP2005/000607 JP2005000607W WO2005068679A1 WO 2005068679 A1 WO2005068679 A1 WO 2005068679A1 JP 2005000607 W JP2005000607 W JP 2005000607W WO 2005068679 A1 WO2005068679 A1 WO 2005068679A1
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WO
WIPO (PCT)
Prior art keywords
gas
furnace
metal member
hcn
metal
Prior art date
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PCT/JP2005/000607
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English (en)
Japanese (ja)
Inventor
Kaoru Hoshino
Makoto Miyashita
Takashi Kawamura
Toshiko Totsuka
Hiroshi Eiraku
Kuniji Yashiro
Takumi Kurosawa
Original Assignee
Parker Netsushori Kogyo K.K.
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Application filed by Parker Netsushori Kogyo K.K. filed Critical Parker Netsushori Kogyo K.K.
Priority to US10/586,626 priority Critical patent/US20070204934A1/en
Priority to DE602005015934T priority patent/DE602005015934D1/de
Priority to JP2005517113A priority patent/JP4861703B2/ja
Priority to EP05703844A priority patent/EP1707646B1/fr
Priority to CN2005800025506A priority patent/CN1910303B/zh
Publication of WO2005068679A1 publication Critical patent/WO2005068679A1/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
    • 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
    • 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
    • C23C8/06—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 using gases
    • C23C8/28—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 using gases more than one element being applied in one step
    • C23C8/30—Carbo-nitriding
    • 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
    • C23C8/06—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 using gases
    • C23C8/28—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 using gases more than one element being applied in one step
    • C23C8/30—Carbo-nitriding
    • C23C8/32—Carbo-nitriding of ferrous surfaces

Definitions

  • the present invention relates to a metal member pretreatment method for activating a metal member surface prior to subjecting the metal member to a diffusion and infiltration treatment such as nitriding and carburizing.
  • a gas nitriding method or a gas carburizing method in which a nitrided or carburized layer is formed on the surface of a metal member is performed by using a component made of an iron-based material. It is mainly widely implemented.
  • the passivation film (oxide, etc.) present on the surface of the member causes nitrogen or carbon to enter the metal member surface. This is a problem in that the penetration and diffusion of the components are hindered, and processing defects and processing unevenness of the above members occur. Therefore, prior to these diffusion and infiltration treatments, activation treatment of the surface of the metal member is performed.
  • the most widely used surface activation treatment is a method using a chloride compound represented by a marcoizing treatment.
  • a chloride compound represented by a marcoizing treatment As the chloride, a butyl chloride resin, a salted ammonium salt, methylene chloride, or the like is used.
  • the chloride is placed in a processing furnace together with a metal member and heated. By the heating, these chlorides are decomposed to generate HC1, and the generated HC1 destroys (modifies) the passivation film on the surface of the metal member and activates the surface. Make sure that the diffusion and infiltration treatment is assured.
  • the surface activation of the metal member by the above-mentioned salt ridden is performed by gas nitriding / gas nitrocarburizing in which the decomposition-generated H C1 only wears the furnace inner wall made of brick / metal. Reacts with ammonia, which is an atmospheric gas, to produce ammonium chloride, which remains on the surface of a metal member (work) that is not only a cause of trouble due to deposition of the salt in the furnace or the exhaust system. This leads to a reduction in the corrosion resistance and fatigue strength of the member.
  • the above NF is decomposed by heating to generate fluorine, and the generated fluorine is a metal
  • the passivation film on the member surface is changed to a fluoride film to activate the metal member surface.
  • a fluorine compound (NF) NF
  • Advanced treatment is required to detoxify the contained NF and HF, which hinders the spread of the method.
  • the method of activating a metal member surface using the halogen compound has problems such as a problem of deposits in a furnace, wear of a furnace inner wall, and a need for a detoxification facility for exhaust gas.
  • problems such as a problem of deposits in a furnace, wear of a furnace inner wall, and a need for a detoxification facility for exhaust gas.
  • development of a method for activating a metal member surface without using a halide has been promoted.
  • the ammonia gas nitriding method described in Patent Document 2 generates a reducing radical generated by thermal decomposition of acetone and CO on the surface of a high chromium alloy steel member, which is a work, thereby reducing the surface of the alloy steel member.
  • This is a method of activating the passivation film by reduction.
  • acetone is thermally decomposed according to the following equation (1) on the surface of the heated high chromium alloy steel member, and reducing radicals and CO are generated on the surface of the high chromium alloy member.
  • the oxide film (MO) on the surface of the metal member is reduced by the following equation (2).
  • the HCN generated by the above equation (4) reduces the passivation film on the surface of the high chromium alloy member by the following reaction.
  • the C and N of the generated Cr (CN) diffuse into the surface of high chromium alloy members and contribute to carburizing and nitriding.
  • Patent Document 1 JP-A-3-44457
  • Patent Document 2 Japanese Patent Application No. 9-38341
  • the method described in Patent Document 2 is excellent in that the problem of the method for activating the surface of a metal member with chlorides described in Patent Document 1 is solved in principle.
  • the method described in Patent Document 2 uses acetone which is liquid at normal temperature and normal pressure, it requires an apparatus for introducing acetone vapor, and since it is not easy to control the flow rate of acetone, it has a uniform active surface. There is a disadvantage that it is difficult to obtain a metal member.
  • the present inventors have developed a method using a compound that is a gas at normal temperature and normal pressure in place of acetone, which has a problem in handling, and completed the present invention. That is, the configuration of the present invention is as follows.
  • a method for activating the surface of a metal member wherein HCN is generated by a catalytic action of a metal jig, and the generated HCN is caused to act on the surface of the metal member.
  • the metal furnace inner wall or the metal jig contains one or more metals selected from the group consisting of Fe, Ni, Co, Cu, Cr, Mo, Nb, V, Ti and Zr.
  • the concentration of HCN generated in the furnace is 100 mg / m 3 or more, 2.
  • the method for activating a metal member surface according to the above 1, wherein the dew point of the metal is 5 ° C. or less.
  • a high-alloy steel part which is difficult to perform a diffusion and infiltration treatment such as a gas nitriding method or a gas carburizing method in which a nitrided layer, a carburized layer or a carbonitrided layer is formed on the surface of a metal member.
  • the surface passivation film is formed by using gases normally used in gas heat treatment and generating HCN gas in the furnace by utilizing the catalytic action of the surface of the metal and / or metal furnace material to be treated.
  • reaction product of CO and ammonia in the atmospheric gas is similar in terms of the effect on the passivation film by comparing the above equations (2) and (5), and the presence of both CH 'and HCN Is
  • a force that is a sufficient condition for activation of the surface of a high chromium alloy steel member is not necessarily a necessary condition, and it is assumed that it is not a necessary condition. We worked on confirming the revitalization effect.
  • the gas selected from the compounds was introduced into a matsufur furnace made of SUS310S and heated to 550 ° C to investigate the formation of HCN. As a result, it was confirmed that carbon monoxide, carbon dioxide, acetylene, ethylene, propane, and butane each clearly generate HCN in combination with ammonia.
  • HCN generation reaction by ammonia and the carbon-containing compound can be represented by the following equations, respectively.
  • a gas selected from a nitriding atmosphere gas (NH: N molar ratio 1: 1) and various carbon-containing compounds.
  • the comparison of the amount of HCN generated by the reaction with nitric acid is based on the nitriding atmosphere gas (NH: N molar ratio 1: 1).
  • Each carbon-containing compound is contained in an equivalent ratio of 1%, and the inner wall is introduced into a SUS310S Matsufuru furnace, heated to 550 ° C for 30 minutes, and the reaction of the above formulas (7)-(12) is carried out. I did it. As a result, the amount of HCN produced by each carbon-containing compound was in the following order.
  • each of these compounds is introduced into a heating furnace at the initial stage of the nitriding treatment to have an activating effect. Whether or not it was evaluated using a SUS304 plate material. As a result, C
  • RX gas is a mixture of hydrocarbon gas (for example, propane gas, butane gas, natural gas) and air at almost chemical equivalents, and decomposes in a catalyst layer maintained at 1000 ° C to produce C ⁇ and H (N).
  • CO gas as a carbon supply compound for activating the metal member surface
  • the required injection amount of CO gas in the present invention is about 1/10 (capacity) of the gas nitrocarburizing atmosphere, the influence of HO and C In some cases, it can be used as a C ⁇ source.
  • the activation effect of the alloy steel member surface according to the present invention is due to HCN.
  • the above activation effect depends on the HCN concentration in the furnace atmosphere. Proper concentration of HCN to obtain activating effect satisfying ranges from 100- 30, 000mg / m 3. If the concentration of HCN is less than 100 mg / m 3 , the above activating effect cannot be expected. On the other hand, HCN concentration 30, the activating effect is saturated at OOOmgZm 3 exceeds, not only economically disadvantageous, is not preferred in the sooting by thermal decomposition of a carbon feed I ⁇ product (carbon produced in the furnace) occurs .
  • the dew point of the furnace atmosphere gas is preferably 5 ° C or less. If the above dew point is higher than 5 ° C, the metal surface activated by HCN gas is re-oxidized by H ⁇ in the atmosphere.
  • the environmental advantage of the method of the present invention is that, as explained in the above reaction formula (5), HCN that has contributed to activation of the surface of a metal member is taken into the surface of the member and nitrogen of the member is reduced. HCN, which contributes to carving and carburization, does not leave residue on the surface of the member, and is discharged as exhaust gas without contributing to the reaction, can be easily detoxified by the ammonia combustion device attached to the nitriding device. And no new equipment is required.
  • a further advantage of the present invention is that the nitridation processing time is reduced by the smooth progress of the nitridation process.
  • Gas nitriding of metal members is usually performed according to the following schedule.
  • the nitriding atmosphere gas (NH + N) was reduced to 1% of the furnace volume per hour.
  • the pressure is maintained at +0.5 kPa by a pressure valve, and the extruded exhaust gas is burned and decomposed by an exhaust gas combustion device.
  • a carbon supply compound is introduced into the nitriding atmosphere gas to generate HCN to activate the metal member surface, and thereafter, the carbon supply compound By stopping the introduction, the process can be shifted to the nitriding step.
  • the inner wall of the processing furnace used in the present invention is made of metal.However, even if the inner wall is not made of metal, the metal member to be treated serves as a catalyst for HCN, and the metal member is used as a furnace.
  • the jig to be held inside may be made of metal.
  • the metal constituting the metal inner wall, the metal member, and the jig includes, for example, one or more metals selected from Fe, Ni, Co, Cu, Cr, Mo, Nb, V, Ti, and Zr. Is preferred.
  • Metal members subjected to the surface activation treatment by the method of the present invention include steel for cold mold, steel for hot mold, steel for plastic mold, high speed tool steel, powder high speed tool steel, These include chromium molybdenum steel, maraging steel, austenitic stainless steel, ferritic stainless steel, martensitic stainless steel, martensitic heat-resistant steel, austenitic heat-resistant steel, and nickel-based superalloys.
  • the metal member is placed in the processing furnace by an appropriate jig according to a conventional method and subjected to a surface activation treatment.
  • the surface treatment gases supplied into the furnace are a carbon supply compound and ammonia, which are gases at normal temperature and normal pressure, and are supplied into the furnace from dedicated cylinders.
  • the metal members are set in the furnace, the atmosphere in the furnace is vacuum purged or replaced with nitrogen gas, and then the nitriding atmosphere gas (ammonia alone or ammonia + nitrogen gas or ammonia + nitrogen gas + After introducing a hydrogen gas) and establishing a reducing atmosphere, the temperature is raised and the carbon supply compound of the present invention is introduced.
  • the ammonia gas and the carbon supply mixture are heated in a furnace at 300 ° C or higher, HCN is generated by the catalytic action of the metal surface.
  • the ratio of the flow rate of the nitriding atmosphere gas, ammonia, to the flow rate of the carbon feed conjugate to be introduced should be in the range of 1: 0.000001 to 1: 0.1. If the flow rate ratio of the carbon-supplying compound is lower than 1: 0.000001, the activation effect cannot be obtained because the amount of generated HCN is low. If the flow rate ratio of the carbon-supplying compound is more than 1: 0.1, the activation effect is saturated and economically disadvantageous.
  • the carbon supply compound is one or more gaseous compounds selected from acetylene, ethylene, propane, butane and carbon monoxide as described above, and is supplied into the processing furnace simultaneously with the ammonia-containing gas as described above. You can also.
  • the temperature of the ammonia-containing gas in the furnace reaches about 300 ° C.
  • the introduction of the carbon supply compound is started.
  • the carbon supply compound is introduced at the same time as the temperature rise, and It is desirable to generate HCN.
  • FIG. 1 1 is a Matsufur furnace, 2 is its outer shell, 3 is a heater, 4 is an inner vessel (retort), 5 is a gas introduction pipe, 6 is an exhaust pipe, 7 is a motor, 8 is a fan, 9 Is a metal jig, 10 is a gas guide cylinder, 11 is a umbrella, 12 is a vacuum pump, 13 is an exhaust gas combustion device, 14 is a carbon supply compound gas cylinder, 15 is an ammonia gas cylinder, 16 is a nitrogen gas cylinder, and 17 is a hydrogen gas cylinder. , 18 is a flow meter and 19 is a gas control valve.
  • Fig. 1 (Use a SUS310S Matsufune furnace with an inner volume of 100L shown here. Inside the furnace, set the SUS304 plate and feed NH gas and N gas at a flow rate of 200 L / H, respectively, from room temperature to 55
  • the temperature was raised to 0 ° C in 75 minutes.
  • the injection of acetylene gas 2LZH was started.
  • the ambient temperature was maintained for 2 hours.At this point, while the injection of acetylene gas was stopped, NH gas and N gas were allowed to flow at 550 ° C for another 4 hours to advance nitriding.
  • the heating was stopped, the furnace was cooled by continuing to flow only N gas, and the test piece in the furnace was taken out when the ambient temperature became 100 ° C or less.
  • Example 2 A SUS304 plate was set in the Matsufuru furnace used in Example 1, and NH gas and N gas were fed at a flow rate of 200 LZH, respectively, and the temperature was raised from room temperature to 550 ° C in 75 minutes.
  • the injection of 5LZH propane gas was started when the ambient temperature reached 100 ° C (18 minutes after the start of heating). After raising the temperature to 550 ° C, the atmosphere temperature was maintained for 2 hours.At this point, while propane gas injection was stopped, NH gas and N gas were further flowed at 550 ° C for 4 hours to allow nitriding to proceed. The heating was stopped, only N gas was kept flowing, and the furnace was cooled. When the temperature of the furnace reached 100 ° C or less, the test piece in the furnace was taken out.
  • the exhaust gas from the furnace was branched, and a part of the exhaust gas was absorbed into a 2% by mass aqueous solution of caustic soda, and HCN analysis was performed. From the analysis results of the HCN absorption solution, the average HCN concentration in the furnace atmosphere during the propane gas injection period was 400 mg / m 3 .
  • the weight increase of the SUS304 test piece before and after the nitriding treatment was measured and found to be 18 g / m 2 .
  • the SUS304 plate was set in the Matsufurn furnace used in Example 1, and ⁇ gas and ⁇ gas were fed at a flow rate of 200 LZH each, and the temperature was raised from room temperature to 550 ° C in 75 minutes.
  • injection of 5 L / H of C ⁇ gas was started.
  • the ambient temperature was maintained for 2 hours.At this time, while the injection of C ⁇ gas was stopped, NH gas and N gas were further flowed at 550 ° C for 4 hours to advance nitriding. Then, the heating was stopped, only the N gas was kept flowing, the furnace was cooled, and the test piece in the furnace was taken out when the ambient temperature became 100 ° C or less.
  • the exhaust gas from the furnace was branched, and a part of the exhaust gas was absorbed into a 2% by mass aqueous solution of caustic soda, and HCN analysis was performed. From the analysis results of the HCN absorption solution, the average HCN concentration in the furnace atmosphere during the CO gas injection period reached 1,000 mg / m 3 .
  • the weight increase of the SUS304 test piece before and after the nitriding treatment was measured and found to be 18 gZm 2 .
  • the SUS304 plate was set in the Matsufurn furnace used in Example 1 and ⁇ gas and ⁇ gas were
  • nitriding was performed by flowing NH gas and N gas at 550 ° C for another 4 hours.
  • the heating was stopped and only the N gas was kept flowing, the furnace was cooled and the ambient temperature dropped to 100 ° C or less.
  • the exhaust gas from the furnace was branched, and a part of the exhaust gas was absorbed into a 2% by mass aqueous solution of caustic soda, and HCN analysis was performed. From the analysis results of the HCN absorbing solution, the CH gas injection period
  • the average HCN concentration in the furnace atmosphere reached 1,200 mg / m 3 .
  • the weight increase of the SUS304 test piece before and after the nitriding treatment was measured and found to be 18 g / m 2 .
  • the SUS304 specimen was cut and polished, etched with a marble solution, and the cut surface was observed with an optical microscope. As a result, a nitride layer having a uniform thickness of 45 ⁇ was formed.
  • the SUS304 plate was set in the Matsufurn furnace used in Example 1 and ⁇ gas and ⁇ gas were
  • nitriding was performed by flowing NH gas and N gas at 550 ° C for another 4 hours.
  • the heating was stopped and only the N gas was kept flowing, the furnace was cooled and the ambient temperature dropped to 100 ° C or less.
  • the average HCN concentration in the furnace atmosphere reached 600 mg / m 3 .
  • the weight increase of the SUS304 test piece before and after the nitriding treatment was measured and found to be 18 gZm 2 .
  • the SUS304 test piece was cut and polished, etched with a marble solution, and the cut surface was observed with an optical microscope, a nitride layer having a uniform thickness of 45 zm was formed.
  • the SUS304 plate was set in the Matsufurn furnace used in Example 1 and ⁇ gas and ⁇ gas were
  • the heating was stopped and only the N gas was kept flowing, the furnace was cooled and the ambient temperature dropped to 100 ° C or less.
  • a high-alloy steel part which is difficult to perform a diffusion and infiltration treatment such as a gas nitriding method or a gas carburizing method in which a nitrided layer, a carburized layer or a carbonitrided layer is formed on the surface of a metal member.
  • the surface passivation film is formed by using gases normally used in gas heat treatment and generating HCN gas in the furnace by utilizing the catalytic action of the surface of the metal and / or metal furnace material to be treated.
  • FIG. 1 is a diagram showing the structure of a processing furnace used in the present invention.
  • FIG. 2 A micrograph of a cut surface of the test piece of Example 1
  • FIG. 3 A micrograph of a cut surface of the test piece of Comparative Example 1.

Abstract

La présente invention concerne un procédé permettant d'activer la surface d'un élément métallique, c'est-à-dire, activer un film revêtu passivé présent dans la surface d'un élément d'acier à haute teneur en alliage qui rend difficile un traitement de pénétration par diffusion tel qu'un procédé de nitruration gazeux ou un procédé de cémentation au carbone gazeux destiné à former une couche nitrurée, une couche carburée ou une couche carburée et nitrurée sur la surface d'un élément métallique, ce procédé consistant à utiliser un gaz généralement utilisé dans un traitement thermique gazeux, formant un gaze HCN dans un four via l'utilisation d'une action catalytique de la surface d'un métal à traiter et/ou un matériau de ce four, afin d'activer la surface passivée de cet élément d'acier à haute teneur en alliage. Le procédé susmentionné est exempt d'inconvénients tel que la formation de dépôt dans le four, l'usure de la surface de paroi du four et, la nécessité d'un traitement pour convertir un gaz d'échappement en un matériau non nocif, qui ont posé des problèmes dans le cas d'un traitement d'activation classique utilisant un composé allogène et, ainsi il peut être utilisé avec profit comme procédé d'activation de la surface d'un élément métallique, lequel convient comme prétraitement d'un traitement de pénétration par diffusion.
PCT/JP2005/000607 2004-01-20 2005-01-19 Procede d'activation de surface d'un element metallique WO2005068679A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US10/586,626 US20070204934A1 (en) 2004-01-20 2005-01-19 Method for Activating Surface of Metal Member
DE602005015934T DE602005015934D1 (de) 2004-01-20 2005-01-19 Verfahren zur aktivierung der oberfläche eines metallbauelements
JP2005517113A JP4861703B2 (ja) 2004-01-20 2005-01-19 金属部材表面の活性化方法
EP05703844A EP1707646B1 (fr) 2004-01-20 2005-01-19 Procede d'activation de surface d'un element metallique
CN2005800025506A CN1910303B (zh) 2004-01-20 2005-01-19 金属构件表面的活化方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2004-012328 2004-01-20
JP2004012328 2004-01-20

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WO2005068679A1 true WO2005068679A1 (fr) 2005-07-28

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US (1) US20070204934A1 (fr)
EP (1) EP1707646B1 (fr)
JP (1) JP4861703B2 (fr)
KR (1) KR100858598B1 (fr)
CN (1) CN1910303B (fr)
DE (1) DE602005015934D1 (fr)
WO (1) WO2005068679A1 (fr)

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JP2016023327A (ja) * 2014-07-18 2016-02-08 株式会社日本テクノ ガス軟窒化方法およびガス軟窒化装置
JP2016188417A (ja) * 2015-03-30 2016-11-04 新日鐵住金ステンレス株式会社 オーステナイト系ステンレス鋼及びその製造法

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EP2278038A1 (fr) 2009-07-20 2011-01-26 Danmarks Tekniske Universitet (DTU) Procédé d'activation d'un article de métal passif ferreux ou non ferreux préalable à la carburation, à la nitruration et/ou à la nitrocarburation
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US8961711B2 (en) 2010-05-24 2015-02-24 Air Products And Chemicals, Inc. Method and apparatus for nitriding metal articles
CN102168269A (zh) * 2011-03-16 2011-08-31 广州有色金属研究院 一种催渗等离子氮碳共渗与氮碳化钛复合膜层的制备方法
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AU2013210034A1 (en) 2012-01-20 2014-09-11 Swagelok Company Concurrent flow of activating gas in low temperature carburization
TWI548778B (zh) * 2014-02-11 2016-09-11 國立臺灣大學 不銹鋼表面處理方法及不銹鋼處理系統
TWI798885B (zh) 2020-11-18 2023-04-11 日商帕卡熱處理工業股份有限公司 金屬構件之處理方法及處理裝置

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CN1910303A (zh) 2007-02-07
JP4861703B2 (ja) 2012-01-25
US20070204934A1 (en) 2007-09-06
EP1707646B1 (fr) 2009-08-12
KR20060114368A (ko) 2006-11-06
KR100858598B1 (ko) 2008-09-17
EP1707646A1 (fr) 2006-10-04
CN1910303B (zh) 2010-05-12

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