WO2019026682A1 - 充填済み容器の製造方法、及び、充填済み容器 - Google Patents
充填済み容器の製造方法、及び、充填済み容器 Download PDFInfo
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- WO2019026682A1 WO2019026682A1 PCT/JP2018/027662 JP2018027662W WO2019026682A1 WO 2019026682 A1 WO2019026682 A1 WO 2019026682A1 JP 2018027662 W JP2018027662 W JP 2018027662W WO 2019026682 A1 WO2019026682 A1 WO 2019026682A1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C3/00—Vessels not under pressure
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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
- C23C8/06—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
- C23C8/08—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 only one element being applied
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J12/00—Pressure vessels in general
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
- F17C1/10—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge with provision for protection against corrosion, e.g. due to gaseous acid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/002—Details of vessels or of the filling or discharging of vessels for vessels under pressure
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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
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
- F17C2203/0602—Wall structures; Special features thereof
- F17C2203/0607—Coatings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
- F17C2203/0634—Materials for walls or layers thereof
- F17C2203/0636—Metals
- F17C2203/0639—Steels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
- F17C2203/0634—Materials for walls or layers thereof
- F17C2203/0636—Metals
- F17C2203/0639—Steels
- F17C2203/0643—Stainless steels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
- F17C2203/0634—Materials for walls or layers thereof
- F17C2203/0636—Metals
- F17C2203/0648—Alloys or compositions of metals
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
- F17C2203/0634—Materials for walls or layers thereof
- F17C2203/0658—Synthetics
- F17C2203/0675—Synthetics with details of composition
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2209/00—Vessel construction, in particular methods of manufacturing
- F17C2209/23—Manufacturing of particular parts or at special locations
- F17C2209/232—Manufacturing of particular parts or at special locations of walls
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/03—Mixtures
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/03—Mixtures
- F17C2221/037—Containing pollutant, e.g. H2S, Cl
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/05—Ultrapure fluid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2270/00—Applications
- F17C2270/05—Applications for industrial use
- F17C2270/0518—Semiconductors
Definitions
- the present invention relates to a method of manufacturing a filled container by filling a metal storage container with a fluorine-containing gas such as ClF 3 or IF 7 and the above-described filled container.
- Containers made of stainless steel are used as storage containers filled with fluorine-containing gas such as ClF 3 and IF 7 .
- a film of fluoride is formed on the surface of the metal material.
- a metal material such as stainless steel is heated to a temperature of 80 ° C. or less for the purpose of preventing a decrease in the amount of ClF 3 by suppressing adsorption of ClF 3 gas to metal and suppressing reaction on the metal surface. It is disclosed that the film is exposed to ClF 3 to form a fluoride film on the surface of the metal material.
- a metal container such as stainless steel is filled with 100% ClF 3 gas and held at 80 ° C. for 18 hours to expose the inner surface of the metal container to ClF 3 for fluoride Form a film.
- the thickness of the fluoride film is set to 190 ⁇ or less. It is disclosed that.
- stainless steel is heated to 150 ° C. and exposed to 1% diluted F 2 gas to form a fluoride film.
- Patent Document 3 discloses that in order to suppress the fluorination reaction and adsorption of ClF filled in a storage container, contact with a gas containing ClF does not cause fluoride It is disclosed to form a kinetic coating.
- a passivation film of 4 nm in thickness is formed by treatment at 10 to 100 ° C. using ClF gas, and 8 nm in thickness is formed at 10 to 100 ° C. using F 2 gas. It forms a passive film.
- the fluorine-containing gas used in semiconductor device manufacturing processes and the like is also required to be highly purified, and in particular, for metal impurities that greatly affect the electrical characteristics of the semiconductor device, the concentration in the gas is 10 mass ppb It is required to reduce to less than.
- Patent Documents 1 to 3 if a fluoride film is formed on the surface of the metal material, the reaction between the fluorine-containing gas and the surface of the metal material can be suppressed, so corrosion of the metal material and purity of the fluorine-containing gas The effect of suppressing the decrease of the metal oxide and the effect of suppressing the generation of metal impurities generated by the reaction of the fluorine-containing gas and the metal material can be obtained. However, since a trace amount of metal impurities are mixed in the fluorine-containing gas, the concentration of the metal impurities can not be less than 10 mass ppb.
- the present invention has been made to solve the above problems, and not only to suppress the decrease in the purity of the fluorine-containing gas, but also to prevent the mixing of metal impurities derived from the metal material into the fluorine-containing gas. It is an object of the present invention to provide a method of producing a filled container capable of
- the inventors of the present invention have found that mixing of a trace amount of metal impurities into the fluorine-containing gas is caused by the termination of the metal surface (usually when hydrogen or oxygen is not applied). Not only caused by the reaction of the fluorine-containing gas with water or the like attached to the metal surface, or with the moisture attached to the metal surface, and at that time it is formed on the surface of the metal material. It was thought that the fluoride film was exfoliated from the surface under the influence of impact, moisture and the like, and was caused by being mixed into the fluorine-containing gas as metal particles.
- the filled container of the present invention is a filled container filled with at least one fluorine-containing gas selected from the group consisting of ClF 3 , IF 7 , BrF 5 , F 2 and WF 6 in a metal storage container.
- At least the inner surface of the storage container is made of manganese steel, the surface roughness R max of the inner surface is 10 .mu.m or less, and the surface of the storage container in contact with the fluorine-containing gas
- the molar ratio F / Fe of fluorine atom F to iron atom Fe is 0.01 or more and less than 3 and the molar ratio of oxygen atom O to iron atom Fe at an average value in the range of 10 nm from the outermost surface O / Fe Is 1 or less.
- the present invention it is possible to suppress the decrease in the purity of the fluorine-containing gas, and to prevent the contamination of the fluorine-containing gas with metal impurities derived from the metal material.
- the method for producing a filled container comprises the steps of: preparing a metal storage container; and fluorinating the inner surface of the storage container with a gas containing a first fluorine-containing gas at 50 ° C. or less. And the steps of: replacing the inside of the storage container with an inert gas; and filling the inside of the storage container with a second fluorine-containing gas.
- the storage container is at least composed of manganese steel on the inner surface.
- the metal elements chromium is easily mixed in with fluorine-containing gas, so by using manganese steel containing less chromium than stainless steel, the metal of the inner surface of the storage container to fluorine-containing gas filling the storage container It is possible to prevent the mixing of metal impurities derived from the material.
- the manganese steel preferably contains 97% by mass or more of iron and 1% by mass or more and 2% by mass or less of manganese. Even when nickel and chromium are unavoidably mixed in manganese steel, the content of nickel is preferably 0.25% by mass or less, and the content of chromium is preferably 0.35% by mass or less.
- the manganese steel for example, SMn420, SMn433, SMn438, and SMn443 defined in JIS G 4053: 2016, STH 11 and STH 12 defined in JIS G 3429: 2013, and the like can be used.
- the storage container has a surface roughness R max of 10 ⁇ m or less on the inner surface.
- the surface roughness R max of the inner surface is preferably 5 ⁇ m or less, more preferably 1 ⁇ m or less.
- the surface roughness R max of the inner surface is often 0.1 ⁇ m or more.
- the surface roughness R max is the maximum height defined in JIS B 0601: 1982, and within one of the reference lengths of the cross-sectional curve, one of the roughness curves from which the surface undulation is removed. It means the height difference between the highest mountain and the lowest valley.
- the gas adsorption performance of the surface of the metal material is increased. Therefore, when the surface roughness of the metal material is large, atmospheric components such as O 2 are adsorbed and remain on the surface of the metal material, and they are desorbed and mixed in the fluorine-containing gas that contacts the metal material, and the storage container It causes the decrease in the purity of the fluorine-containing gas stored therein. In addition, when the surface roughness of the metal material is large, the moisture remaining on the surface of the metal material reacts with the fluorine-containing gas, which causes the generation of impurities such as HF. Therefore, by reducing the surface roughness of the metal material, atmospheric components adsorbed on the surface and moisture remaining on the surface can be reduced, and the decrease in purity of the fluorine-containing gas can be suppressed.
- the surface roughness R max of the inner surface can be 10 ⁇ m or less by polishing the inner surface of the storage container.
- the method for polishing the inner surface of the storage container is not particularly limited as long as it can polish to a predetermined roughness, but, for example, buffing treatment, electrolytic polishing treatment, barrel polishing treatment and the like can be used.
- the buffing process is a method of polishing a metal material using a cloth or paper-made polishing cloth, using an abrasive as required.
- Electropolishing is a method of polishing the surface of a metal material by supplying electricity in an electrolytic solution.
- the barrel polishing process is adding a polishing suspension containing an abrasive, a solvent, an additive, and the like to the inside of a container and sealing the container, and then rotating the container in combination with a rotation motion and a revolution motion to rotate the container.
- This is a method of bringing an abrasive into contact with the inner surface and polishing the inner surface.
- the material of the abrasive include diamond, zirconia, alumina, silica, silicon nitride, silicon carbide, silica-alumina, iron, carbon steel, chromium steel, stainless steel and the like.
- the solvent used for the polishing treatment is not particularly limited, but water is usually used.
- additives used for the polishing treatment include pH adjusters, surfactants, and rust inhibitors.
- the inner surface of the storage container is brought into contact with the gas containing the first fluorine-containing gas at 50 ° C. or less.
- the fluorination treatment is performed at 50 ° C. or less to terminate the surface of the metal material with either a fluorine atom or an oxygen atom.
- a fluorine atom or an oxygen atom As a result, it is possible to suppress the generation of impurities such as HF due to the reaction of a portion terminated with a hydrogen atom or a hydroxyl group with a fluorine-containing gas.
- the temperature of the fluorination treatment exceeds 50 ° C.
- the reaction between the fluorine-containing gas and the surface of the metal material becomes intense, and a film of metal fluoride is often formed.
- oxygen atoms on the surface of the metal material are detached as OF 2 or the like during the fluorination treatment, and are substituted by fluorine atoms.
- the fluorination treatment is preferably performed at 40 ° C. or less, more preferably 30 ° C. or less.
- the lower limit of the temperature of the fluorination treatment is not particularly limited, but the fluorination treatment is preferably performed at 0 ° C. or more, and more preferably at 10 ° C. or more.
- the first fluorine-containing gas is at least one gas selected from the group consisting of ClF 3 , IF 7 , BrF 5 , F 2 and WF 6 .
- the first fluorine-containing gas used for the fluorination treatment may be different from or the same as the second fluorine-containing gas stored in the storage container.
- the first fluorine-containing gas is preferably F 2 gas.
- the F 2 gas is composed of only F, and no by-products such as ClF and IF 5 are generated, so that it is possible to suppress a decrease in the purity of the fluorine-containing gas stored in the storage container.
- the pressure of the fluorination treatment is not particularly limited, but can be appropriately set, for example, in the range of 10 kPa or more and 1 MPa or less.
- the fluorination treatment may be performed, for example, under atmospheric pressure.
- the time of a fluorination process is not specifically limited, For example, it can set suitably in the range of 1 minute or more and 24 hours or less.
- the time taken for the fluorination treatment depends on the temperature or pressure of the fluorination treatment, the content of the fluorine-containing gas used for the fluorination treatment, etc., but when the pressure of the fluorine-containing gas used for the fluorination treatment no longer decreases Can be the end point of the fluorination treatment.
- sufficient time for the fluorination process is taken, and it is thought that the fluorination process is completed.
- the inside of the storage container is replaced with an inert gas.
- an inert gas in addition to a rare gas such as argon gas or helium gas, nitrogen gas or the like can be used.
- the second fluorine-containing gas is filled in the inside of the storage container after being replaced with the inert gas.
- the second fluorine-containing gas is at least one gas selected from the group consisting of ClF 3 , IF 7 , BrF 5 , F 2 and WF 6 .
- the second fluorine-containing gas is preferably at least one gas selected from the group consisting of interhalogen compounds ClF 3 , IF 7 and BrF 5 , and among them, highly practical ClF 3 gas or IF 7 gas It is more preferable that
- the filled container described in [filled container] can be preferably produced.
- the molar ratio of fluorine atom F to iron atom Fe is an average value in the range of 10 nm from the outermost surface on the surface in contact with fluorine gas in the storage container. It is possible to manufacture a filled container in which F / Fe is 0.01 or more and less than 3 and the molar ratio O / Fe of oxygen atom O to iron atom Fe is 1 or less.
- the molar ratio F / Fe is preferably 0.05 or more and less than 3, more preferably 0.1 or more and 2.5 or less, and still more preferably 0.5 or more and 2 or less. Moreover, it is preferable that molar ratio O / Fe is 0.8 or less.
- the filled container of the present invention is a filled container in which a metal storage container is filled with a fluorine-containing gas.
- the molar ratio F / Fe of fluorine atom F to iron atom Fe is an average value in the range of 10 nm from the outermost surface on the surface in contact with the fluorine-containing gas inside the storage container.
- the molar ratio O / Fe of the oxygen atom O to the iron atom Fe is 1 or less.
- the molar ratio F / Fe and O / Fe can be calculated by the integrated intensity ratio of X-ray photoelectron spectroscopy (XPS).
- XPS X-ray photoelectron spectroscopy
- information on the very surface of a material can be obtained, but by performing argon etching, information in the depth direction can be obtained.
- the etching rate by argon etching changes with apparatuses or processing conditions, it is necessary to investigate the correlation of the etching amount with respect to etching processing time previously using a standard sample etc. previously. Then, each element is measured while performing etching at a constant time interval, data on the component ratio of the element to the depth is acquired, and from the result, it is possible to calculate an average value in the range of 10 nm from the surface.
- the sample surface is configured by irradiating the sample with soft X-rays of MgK ⁇ line (1253.6 eV) or AlK ⁇ line (1486.6 eV) and measuring the kinetic energy of photoelectrons emitted from the sample surface.
- MgK ⁇ line 1253.6 eV
- AlK ⁇ line 1486.6 eV
- the molar ratio F / Fe is 0.01 or more and less than 3, preferably 0.05 or more and less than 3, and more preferably 0.1 or more and 2.5 or less. More preferably, it is 0.5 or more and 2 or less.
- the iron or manganese constituting the metal material becomes iron (III) fluoride or manganese (III) fluoride when it is fluorinated. Therefore, when the molar ratio F / Fe is less than 3, the surface of the metal material does not become iron (III) fluoride or manganese (III) fluoride in the stoichiometric ratio, and a fluoride film is formed. Not. Therefore, it is possible to suppress that the fluoride exfoliates from the film of fluoride and mixes in the fluorine-containing gas as a metal impurity.
- the amount of fluorine atoms terminated on the surface of the metal material is small, so the unterminated (terminated with OH or H) portion of the metal reacts with the fluorine-containing gas, such as HF Cause the generation of impurities.
- the molar ratio O / Fe is 1 or less, preferably 0.8 or less.
- the oxygen bond portion reacts with the fluorine-containing gas to cause the formation of metal oxyfluoride (MO x F y ) which is easily mixed as a metal impurity in the fluorine-containing gas.
- the molar ratio O / Fe is often 0.01 or more.
- the storage container is at least composed of manganese steel on the inner surface.
- the manganese steel preferably contains 97% by mass or more of iron and 1% by mass or more and 2% by mass or less of manganese.
- the manganese steel is as described in [Method of producing a filled container].
- the storage container has a surface roughness R max of 10 ⁇ m or less on the inner surface.
- the surface roughness R max of the inner surface is preferably 5 ⁇ m or less, more preferably 1 ⁇ m or less.
- the surface roughness R max of the inner surface is often 0.1 ⁇ m or more.
- the molar ratio O / Fe of the surface of the metal material after the fluorination treatment Is not preferable because the
- the fluorine-containing gas filled in the storage container is at least one gas selected from the group consisting of ClF 3 , IF 7 , BrF 5 , F 2 and WF 6 .
- the fluorine-containing gas is preferably at least one gas selected from the group consisting of interhalogen compounds ClF 3 , IF 7 and BrF 5 , among which a highly practical ClF 3 gas or IF 7 gas Is more preferred.
- the filled container of the present invention it is possible to prevent the contamination of the fluorine-containing gas stored in the storage container with metal impurities derived from the metal material on the inner surface of the storage container.
- the filling amount and pressure of the fluorine-containing gas stored in the storage container differ depending on the type of gas. For example, the boiling point (1 atm) and vapor pressure (35 ° C, gauge pressure), ClF 3 is about 12 ° C and 0.14MPa, IF 7 is about 5 ° C and 0.17MPa, BrF 5 is about 40 ° C and -0.
- the filling amount in the storage container is preferably controlled by weight, since the pressure in the storage container liquefies when filled at a pressure higher than the vapor pressure.
- ClF 3 , IF 7 and BrF 5 F 2 does not liquefy in the range of pressure and temperature normally used, so the filling amount depends on the pressure.
- the content of the metal element contained in the metal impurities in the fluorine-containing gas removed from the filled container is preferably less than 10 mass ppb and less than 5 mass ppb. Is more preferred.
- the content of each of Fe, Mn, Cr, and Ni in the fluorine-containing gas is preferably less than 10 mass ppb, and more preferably less than 5 mass ppb.
- the content of the metal element contained in the metal impurities can be determined using inductively coupled plasma mass spectrometry (ICP-MS).
- the purity of the fluorine-containing gas removed from the filled container is preferably 99.9% by volume or more, and more preferably more than 99.9% by volume.
- the purity of the fluorine-containing gas is determined by analyzing impurities such as HF and O 2 in the fluorine-containing gas using Fourier transform infrared spectroscopy (FT-IR) and gas chromatography mass spectrometry (GC-MS). Is possible.
- Example 1 3.4-L cylinder, made of manganese steel (symbol STH12, Mn: 1.35 to 1.70% by mass, C: 0.30 to 0.41% by mass, including other Si, P, and S)
- the inner surface was polished by electrolytic polishing.
- the surface roughness of the inner surface after polishing is measured by using a contact surface roughness meter and an atomic force microscope (AFM) on a test piece (metal piece obtained by cutting a container into 20 mm ⁇ 20 mm) treated under the same polishing conditions. It evaluated. As a result, the surface roughness R max was 1 ⁇ m or less.
- the inner surface was fluorinated at 40 ° C. for 24 hours under atmospheric pressure without dilution as an F 2 gas as a first fluorine-containing gas, and then it was replaced with helium gas.
- composition of the inner surface of the cylinder was evaluated using an X-ray photoelectron spectrophotometer for the above-mentioned test piece treated under the same conditions. As a result, F / Fe was 1.94 and O / Fe was 0.65.
- Example 2 The same procedure was performed as in Example 1 except that the second fluorine-containing gas was changed to WF 6 gas.
- the contents of Fe, Mn, Cr, and Ni in the WF 6 gas after storage were all less than 5 mass ppb, and the purity of the gas was over 99.9% by volume, which was the same as before storage.
- the concentration of HF was less than 100 ppm by volume.
- Example 3 The same procedure as in Example 1 was carried out except that the second fluorine-containing gas was changed to a ClF 3 gas.
- the contents of Fe, Mn, Cr, and Ni in the ClF 3 gas after storage were all less than 5 mass ppb, and the purity of the gas was over 99.9% by volume, which was the same as before storage.
- the concentration of HF was less than 100 ppm by volume.
- Example 4 The same procedure as in Example 1 was performed except that the second fluorine-containing gas was changed to F 2 gas. However, in the cylinder, F 2 gas was sealed at a pressure of 0.5 MPa (gauge pressure, 35 ° C.). The contents of Fe, Mn, Cr, and Ni in the F 2 gas after storage were all less than 5 mass ppb, and the purity of the gas was over 99.9% by volume, which was the same as before storage. The concentration of HF was less than 100 ppm by volume.
- Example 5 The same procedures as in Example 1 were carried out except that the conditions for enclosing the F 2 gas and performing the fluorination treatment were changed to normal temperature (20 to 25 ° C.).
- the composition of the inner surface of the bomb was 0.82 in F / Fe and 0.33 in O / Fe according to XPS measurement of a test piece treated under the same conditions.
- the contents of Fe, Mn, Cr, and Ni in the IF 7 gas after storage were all less than 5 mass ppb, and the purity of the gas was over 99.9% by volume, which was the same as before storage.
- the concentration of HF was less than 100 ppm by volume.
- Example 6 Change the first fluorine-containing gas and the second fluorine-containing gas to a ClF 3 gas with a metal impurity (Fe, Mn, Cr, Ni) concentration of less than 5 mass ppb and a purity of more than 99.9% by volume; The same procedure as in Example 1 was carried out except for sealing at 14 MPa (gauge pressure, 35 ° C.). The composition of the inner surface of the bomb was 1.56 in F / Fe and 0.48 in O / Fe according to XPS measurement of a test piece treated under the same conditions.
- a metal impurity Fe, Mn, Cr, Ni
- the contents of Fe, Mn, Cr, and Ni in the ClF 3 gas after storage were all less than 5 mass ppb, and the purity of the gas was over 99.9% by volume, which was the same as before storage.
- the concentration of HF was less than 100 ppm by volume.
- Example 7 The same procedure was performed as in Example 1 except that the first fluorine-containing gas was changed to IF 7 gas. Fe of IF 7 gas after storage, Mn, Cr, Ni content is less than 5 ppb by mass Both the purity of the gas did not change before and stored at greater than 99.9% by volume. The concentration of HF was less than 100 ppm by volume.
- Example 8 The same procedure as in Example 1 was carried out except that the conditions of the electropolishing were changed to change the surface roughness R max of the inner surface of the cylinder to 4 ⁇ m.
- the composition of the inner surface of the bomb was 1.15 for F / Fe and 0.62 for O / Fe according to XPS measurement of a test piece treated under the same conditions.
- Fe of IF 7 gas after storage, Mn, Cr, Ni content is less than 5 ppb by mass Both the purity of the gas did not change before and stored at greater than 99.9% by volume.
- the concentration of HF was less than 100 ppm by volume.
- Comparative Example 1 The conditions of the electropolishing were changed to change the surface roughness R max of the inner surface of the cylinder to 12 ⁇ m, and the same procedure as in Example 1 was carried out except that the fluorination treatment using F 2 gas was not performed.
- the composition of the inner surface of the bomb was 0 for F / Fe and 2.25 for O / Fe.
- the content of Fe in the IF 7 gas after storage was 20 mass ppb, and exceeded 10 mass ppb. Furthermore, the purity of the gas was less than 99.9% by volume, and the concentration of HF was more than 100 ppm by volume.
- Comparative Example 2 The same procedure as in Example 1 was carried out except that the fluorination treatment using F 2 gas was not performed.
- the content of Fe in the IF 7 gas after storage was 18 mass ppb, and exceeded 10 mass ppb. Furthermore, the purity of the gas was less than 99.9% by volume, and the concentration of HF was more than 100 ppm by volume.
- Comparative Example 3 The same procedure as in Example 1 was carried out except that the conditions of the electropolishing were changed to change the surface roughness R max of the inner surface of the cylinder to 12 ⁇ m.
- the composition of the inner surface of the bomb was 1.2 for F / Fe and 1.46 for O / Fe.
- the content of Fe in the IF 7 gas after storage was 11 mass ppb, and exceeded 10 mass ppb.
- the purity of gas was over 99.9 volume%, the density
- Comparative Example 4 The same procedure as in Example 1 was carried out except that the fluorination treatment was carried out by sealing the IF 7 gas at 80 ° C. for 24 hours.
- the composition of the inner surface of the bomb was 4.52 in F / Fe and 0.57 in O / Fe.
- the content of Fe in the IF 7 gas after storage was 11 mass ppb, and exceeded 10 mass ppb.
- the purity of the gas was greater than 99.9% by volume, and the concentration of HF was less than 100 ppm by volume.
- Comparative Example 5 The procedure of Example 1 was repeated except that the F 2 gas was sealed at 80 ° C. for 24 hours for fluorination treatment.
- the content of Fe in IF 7 gas after storage was 10 mass ppb.
- the purity of the gas was greater than 99.9% by volume, and the concentration of HF was less than 100 ppm by volume.
- Comparative Example 6 Using a cylinder made of stainless steel (SUS 304) in place of manganese steel, enclosing ClF 3 gas at 80 ° C. for 24 hours for fluorination treatment, and changing the second fluorine-containing gas to ClF 3 gas Were carried out in the same manner as in Example 1.
- the content of Cr in the ClF 3 gas after storage exceeded 150 mass ppb.
- the purity of the gas was greater than 99.9% by volume, and the concentration of HF was less than 100 ppm by volume.
- Comparative Example 7 The same procedure as in Example 1 was carried out except that a cylinder made of stainless steel (SUS304) was used instead of manganese steel.
- the content of Cr in the IF 7 gas after storage exceeded 100 mass ppb.
- the purity of the gas was greater than 99.9% by volume, and the concentration of HF was less than 100 ppm by volume.
- Comparative Example 8 The same procedure as in Example 1 was carried out except using a cylinder made of stainless steel (SUS 304) in place of manganese steel and enclosing F 2 gas at 80 ° C. for 24 hours for fluorination treatment.
- the content of Cr in the IF 7 gas after storage exceeded 100 mass ppb.
- the purity of the gas was greater than 99.9% by volume, and the concentration of HF was less than 100 ppm by volume.
- Example 8 in which the surface roughness R max of the inner surface of the cylinder is 4 ⁇ m, impurities due to peeling at the time of impact, and in comparison with Example 1 in which the surface roughness R max of the inner surface of the cylinder is 1 ⁇ m or less It is thought that impurities are likely to occur when stored for a long time.
- Comparative Example 1 where the surface roughness of the inner surface of the cylinder was high and the fluorination treatment was not performed, the atmospheric component adsorbed on the inner surface of the cylinder was released, and further, this atmospheric component reacted with the IF 7 gas. It is considered that the purity of the IF 7 gas is lowered by this. Further, in Comparative Example 1, since the fluorination treatment was not performed, the surface of the manganese steel was not terminated with F, and the manganese steel and the IF 7 gas reacted, and iron fluoride or iron oxyfluoride derived from manganese steel It is considered that the content of Fe exceeded 10 mass ppb because it was mixed in the IF 7 gas. Furthermore, in Comparative Example 1, HF was generated by reaction of a portion of the manganese steel surface terminated with H or OH with the IF 7 gas, so it is considered that the concentration of HF exceeded 100 ppm by volume.
- Comparative Example 2 Although the surface roughness of the inner surface of the cylinder was low, the fluorination treatment was not performed, so the purity of IF 7 gas was low, the concentration of HF exceeded 100 volume ppm, and Fe as in Comparative Example 1. It is considered that the content exceeded 10 mass ppb.
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Abstract
Description
本発明の充填済み容器の製造方法は、金属製の保存容器を準備する工程と、上記保存容器の内面を、50℃以下で、第1の含フッ素ガスを含むガスと接触させるフッ素化工程と、上記保存容器の内部を不活性ガスで置換する工程と、上記保存容器の内部に第2の含フッ素ガスを充填する工程と、を含む。
金属元素のうち、クロムは含フッ素ガスに混入しやすいため、ステンレス鋼に比べてクロムの含有量が少ないマンガン鋼を用いることにより、保存容器に充填する含フッ素ガスへの、保存容器内面の金属材料に由来する金属不純物の混入を防ぐことができる。
ここで、表面粗さRmaxは、JIS B 0601:1982にて規定される最大高さのことであり、断面曲線の基準長さの範囲内において、表面のうねりを除いた粗さ曲線の一番高い山と一番低い谷との高低差を意味する。
不活性ガスとしては、アルゴンガスやヘリウムガスなどの希ガスのほか、窒素ガスなどを使用することができる。
本発明の充填済み容器は、金属製の保存容器に含フッ素ガスが充填された充填済み容器である。
その他、マンガン鋼については、[充填済み容器の製造方法]において説明したとおりである。
[充填済み容器の製造方法]において説明したとおり、金属材料の表面粗さが大きい場合、金属材料の表面に大気成分や水分が残存するため、保存容器内で保存される含フッ素ガスの純度が低下する原因となる。また、[充填済み容器の製造方法]により充填済み容器を製造する場合、金属材料の表面に多量の大気成分が吸着していると、フッ素化処理後の金属材料の表面のモル比O/Feが大きくなってしまうため好ましくない。
金属不純物に含まれる金属元素の含有量は、誘導結合プラズマ質量分析(ICP-MS)を用いて求めることが可能である。
含フッ素ガスの純度は、フーリエ変換赤外分光分析(FT-IR)及びガスクロマトグラフ質量分析(GC-MS)を用いて含フッ素ガス中のHF、O2などの不純物を分析することにより求めることが可能である。
マンガン鋼(記号STH12、Mn:1.35~1.70質量%、C:0.30~0.41質量%、その他Si、P、Sを含む)で構成された、3.4L型ボンベの内面を、電解研磨によって研磨した。研磨後の内面の表面粗さは、同じ研磨条件で処理したテストピース(容器を20mm×20mmに切断した金属片)を接触式表面粗さ計、及び、原子間力顕微鏡(AFM)で測定して評価した。その結果、表面粗さRmaxは、1μm以下であった。
第2の含フッ素ガスをWF6ガスに変更する以外は、実施例1と同様に行った。保管後のWF6ガス中のFe、Mn、Cr、Niの含有量はいずれも5質量ppb未満であり、ガスの純度は99.9体積%超で保管前と変わらなかった。HFの濃度は100体積ppm未満であった。
第2の含フッ素ガスをClF3ガスに変更する以外は、実施例1と同様に行った。保管後のClF3ガス中のFe、Mn、Cr、Niの含有量はいずれも5質量ppb未満であり、ガスの純度は99.9体積%超で保管前と変わらなかった。HFの濃度は100体積ppm未満であった。
第2の含フッ素ガスをF2ガスに変更する以外は、実施例1と同様に行った。但し、ボンベ内にはF2ガスを0.5MPa(ゲージ圧、35℃)の圧力で封入した。保管後のF2ガス中のFe、Mn、Cr、Niの含有量はいずれも5質量ppb未満であり、ガスの純度は99.9体積%超で保管前と変わらなかった。HFの濃度は100体積ppm未満であった。
F2ガスを封入してフッ素化処理する条件を、常温(20~25℃)に変更する以外は、実施例1と同様に行った。ボンベの内面の組成は、同様の条件で処理したテストピースのXPS測定より、F/Feが0.82であり、O/Feが0.33であった。また、保管後のIF7ガス中のFe、Mn、Cr、Niの含有量はいずれも5質量ppb未満であり、ガスの純度は99.9体積%超で保管前と変わらなかった。HFの濃度は100体積ppm未満であった。
第1の含フッ素ガス及び第2の含フッ素ガスを金属不純物(Fe、Mn、Cr、Ni)濃度5質量ppb未満、純度99.9体積%超のClF3ガスに変更し、2kg、0.14MPa(ゲージ圧、35℃)で封入する以外は、実施例1と同様に行った。ボンベの内面の組成は、同様の条件で処理したテストピースのXPS測定より、F/Feが1.56であり、O/Feが0.48であった。また、保管後のClF3ガス中のFe、Mn、Cr、Niの含有量はいずれも5質量ppb未満であり、ガスの純度は99.9体積%超で保管前と変わらなかった。HFの濃度は100体積ppm未満であった。
第1の含フッ素ガスをIF7ガスに変更する以外は、実施例1と同様に行った。保管後のIF7ガス中のFe、Mn、Cr、Niの含有量はいずれも5質量ppb未満であり、ガスの純度は99.9体積%超で保管前と変わらなかった。HFの濃度は100体積ppm未満であった。
電解研磨の条件を変化させてボンベの内面の表面粗さRmaxを4μmに変更する以外は、実施例1と同様に行った。ボンベの内面の組成は、同様の条件で処理したテストピースのXPS測定より、F/Feが1.15であり、O/Feが0.62であった。保管後のIF7ガス中のFe、Mn、Cr、Niの含有量はいずれも5質量ppb未満であり、ガスの純度は99.9体積%超で保管前と変わらなかった。HFの濃度は100体積ppm未満であった。
電解研磨の条件を変化させてボンベの内面の表面粗さRmaxを12μmに変更し、さらに、F2ガスを用いたフッ素化処理を行わない以外は、実施例1と同様に行った。ボンベの内面の組成は、F/Feが0であり、O/Feが2.25であった。保管後のIF7ガス中のFeの含有量は20質量ppbであり、10質量ppbを超えていた。さらに、ガスの純度は99.9体積%未満であり、HFの濃度は100体積ppmを超えていた。
F2ガスを用いたフッ素化処理を行わない以外は、実施例1と同様に行った。保管後のIF7ガス中のFeの含有量は18質量ppbであり、10質量ppbを超えていた。さらに、ガスの純度は99.9体積%未満であり、HFの濃度は100体積ppmを超えていた。
電解研磨の条件を変化させてボンベの内面の表面粗さRmaxを12μmに変更する以外は、実施例1と同様に行った。ボンベの内面の組成は、F/Feが1.2であり、O/Feが1.46であった。保管後のIF7ガス中のFeの含有量は11質量ppbであり、10質量ppbを超えていた。なお、ガスの純度は99.9体積%超であったが、HFの濃度は100体積ppmを超えていた。
IF7ガスを80℃で24時間封入してフッ素化処理を行う以外は、実施例1と同様に行った。ボンベの内面の組成は、F/Feが4.52であり、O/Feが0.57であった。保管後のIF7ガス中のFeの含有量は11質量ppbであり、10質量ppbを超えていた。ガスの純度は99.9体積%超であり、HFの濃度は100体積ppm未満であった。
F2ガスを80℃で24時間封入してフッ素化処理を行う以外は、実施例1と同様に行った。保管後のIF7ガス中のFeの含有量は10質量ppbであった。ガスの純度は99.9体積%超であり、HFの濃度は100体積ppm未満であった。
マンガン鋼に代えてステンレス鋼(SUS304)で構成されたボンベを用い、ClF3ガスを80℃で24時間封入してフッ素化処理を行い、第2の含フッ素ガスをClF3ガスに変更する以外は、実施例1と同様に行った。保管後のClF3ガス中のCrの含有量は150質量ppbを超えていた。ガスの純度は99.9体積%超であり、HFの濃度は100体積ppm未満であった。
マンガン鋼に代えてステンレス鋼(SUS304)で構成されたボンベを用いる以外は、実施例1と同様に行った。保管後のIF7ガス中のCrの含有量は100質量ppbを超えていた。ガスの純度は99.9体積%超であり、HFの濃度は100体積ppm未満であった。
マンガン鋼に代えてステンレス鋼(SUS304)で構成されたボンベを用い、F2ガスを80℃で24時間封入してフッ素化処理を行う以外は、実施例1と同様に行った。保管後のIF7ガス中のCrの含有量は100質量ppbを超えていた。ガスの純度は99.9体積%超であり、HFの濃度は100体積ppm未満であった。
また、比較例1では、フッ素化処理を行わなかったため、マンガン鋼の表面がFで終端されておらず、マンガン鋼とIF7ガスが反応し、マンガン鋼に由来するフッ化鉄やオキシフッ化鉄がIF7ガス中に混入したため、Feの含有量が10質量ppbを超えたと考えられる。
さらに、比較例1では、マンガン鋼の表面がHやOHで終端された部分とIF7ガスが反応することによりHFが発生したため、HFの濃度が100体積ppmを超えたと考えられる。
Claims (11)
- 少なくとも内面がマンガン鋼で構成されており、該内面の表面粗さRmaxが10μm以下である、金属製の保存容器を準備する工程と、
前記保存容器の内面を、50℃以下で、ClF3、IF7、BrF5、F2及びWF6からなる群から選ばれる少なくとも一種の第1の含フッ素ガスを含むガスと接触させるフッ素化工程と、
前記保存容器の内部を不活性ガスで置換する工程と、
前記保存容器の内部に、ClF3、IF7、BrF5、F2及びWF6からなる群から選ばれる少なくとも一種の第2の含フッ素ガスを充填する工程と、
を含むことを特徴とする充填済み容器の製造方法。 - 前記第1の含フッ素ガスが、F2ガスである請求項1に記載の充填済み容器の製造方法。
- 前記第2の含フッ素ガスが、ClF3ガス又はIF7ガスである請求項1又は2に記載の充填済み容器の製造方法。
- 前記保存容器の内面の表面粗さRmaxが1μm以下である請求項1~3のいずれか1項に記載の充填済み容器の製造方法。
- 前記マンガン鋼が、鉄を97質量%以上含む請求項1~4のいずれか1項に記載の充填済み容器の製造方法。
- 金属製の保存容器に、ClF3、IF7、BrF5、F2及びWF6からなる群から選ばれる少なくとも一種の含フッ素ガスが充填された充填済み容器であって、
前記保存容器は、少なくとも内面がマンガン鋼で構成されており、該内面の表面粗さRmaxが10μm以下であり、
前記保存容器の内部の前記含フッ素ガスと接触する面にて、最表面から10nmの範囲の平均値で、フッ素原子Fと鉄原子Feとのモル比F/Feが0.01以上3未満であり、酸素原子Oと鉄原子Feとのモル比O/Feが1以下であることを特徴とする充填済み容器。 - 充填済み容器から取り出された前記含フッ素ガス中の金属不純物に含まれる金属元素の含有量が、10質量ppb未満である請求項6に記載の充填済み容器。
- 前記モル比F/Feが0.1以上2.5以下である請求項6又は7に記載の充填済み容器。
- 前記含フッ素ガスが、ClF3ガス又はIF7ガスである請求項6~8のいずれか1項に記載の充填済み容器。
- 前記保存容器の内面の表面粗さRmaxが1μm以下である請求項6~9のいずれか1項に記載の充填済み容器。
- 前記マンガン鋼が、鉄を97質量%以上含む請求項6~10のいずれか1項に記載の充填済み容器。
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CN111041403A (zh) * | 2019-12-29 | 2020-04-21 | 中船重工(邯郸)派瑞特种气体有限公司 | 一种电子气体存储用钢瓶的处理方法 |
CN114981481A (zh) * | 2020-01-06 | 2022-08-30 | 中央硝子株式会社 | 金属材料、金属材料的制造方法、半导体处理装置的钝化方法、半导体器件的制造方法及已填充的容器的制造方法 |
WO2024053341A1 (ja) * | 2022-09-06 | 2024-03-14 | 住友精化株式会社 | 二酸化硫黄混合物充填容器及び二酸化硫黄組成物 |
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CN113005389B (zh) * | 2021-02-02 | 2023-05-23 | 福建德尔科技股份有限公司 | 电子级三氟化氯的包装钢瓶的处理方法 |
CN112944204B (zh) * | 2021-02-02 | 2021-11-09 | 福建德尔科技有限公司 | 电子级三氟化氯的收集装置 |
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JPWO2019026682A1 (ja) | 2020-06-18 |
SG11202000802RA (en) | 2020-02-27 |
KR102527163B1 (ko) | 2023-05-02 |
KR20200037330A (ko) | 2020-04-08 |
JP2022159338A (ja) | 2022-10-17 |
US11519557B2 (en) | 2022-12-06 |
JP7116328B2 (ja) | 2022-08-10 |
CN110832106B (zh) | 2022-04-15 |
CN110832106A (zh) | 2020-02-21 |
TW201925496A (zh) | 2019-07-01 |
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US20200173009A1 (en) | 2020-06-04 |
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