WO2012026349A1 - 水反応性Al複合材料、水反応性Al溶射膜、このAl溶射膜の製造方法、及び成膜室用構成部材 - Google Patents
水反応性Al複合材料、水反応性Al溶射膜、このAl溶射膜の製造方法、及び成膜室用構成部材 Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
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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
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
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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
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/56—Apparatus specially adapted for continuous coating; Arrangements for maintaining the vacuum, e.g. vacuum locks
- C23C14/564—Means for minimising impurities in the coating chamber such as dust, moisture, residual gases
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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
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
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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
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/4401—Means for minimising impurities, e.g. dust, moisture or residual gas, in the reaction chamber
- C23C16/4404—Coatings or surface treatment on the inside of the reaction chamber or on parts thereof
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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
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/06—Metallic material
Definitions
- the present invention relates to a water-reactive Al composite material, a water-reactive Al sprayed film, a method for producing this Al sprayed film, and a component for a film forming chamber, and in particular, water-reactive in which In, Si, and Ti are added to Al.
- the present invention relates to an Al composite material, a water reactive Al sprayed film made of this water reactive Al composite material, a method for producing the Al sprayed film, and a film forming chamber component covered with the Al sprayed film.
- a film forming material is provided during the film forming process in the film forming chamber constituent member provided in the apparatus.
- the film forming chamber component for example, a deposition plate for preventing the film from adhering to the inside of the vacuum vessel other than the substrate, a shutter, or a film used only for a predetermined place on the substrate.
- a mask, a tray for transporting a substrate, and the like can be given.
- a film having the same composition as the target thin film (thin film to be formed on the substrate) adheres to these members. These members are usually used repeatedly after removal of the attached film.
- the film that inevitably adheres to these film forming chamber components becomes thicker according to the working time of the film forming process.
- Such an adhesion film is peeled off as particles from the film forming chamber component due to the internal stress or stress due to repeated thermal history, and adheres to the substrate, causing film defects.
- the cycle of the constituent members for the film forming chamber is removed from the film forming apparatus at a stage where the attached film is not peeled off, washed to remove the attached film, then surface-finished, and reused periodically. Has been done.
- film forming materials include Al, Mo, Ti, Cu, Ag, Au, Pt, Rh, Ru, Ir, Ta, W, Nb, Zr, Re, Ni, Cr, V, Li, Co, Pd, and Nd.
- valuable metals such as In and Se, alloys of these metals, and oxides such as ITO, ZnO, PZT and TiO 2 , it adheres to components other than the substrate without forming a film on the substrate. It is required to establish a processing technique for collecting the collected metal and recycling the constituent members.
- the deposit adhered during film formation is removed. It is currently being reused.
- a sand blast method a wet etching method using acid or alkali
- a film removal method utilizing hydrogen embrittlement such as hydrogen peroxide
- a film removal method utilizing electrolysis is generally used. Has been done.
- the deposition prevention plate and the like are not a little dissolved and damaged, so the number of reuse is limited. Therefore, it is desired to develop a film removal method that minimizes damage to the deposition preventive plate and the like.
- the concentration of the deposited film in the blasting waste generated in the sandblasting process or in the waste liquid generated in the chemical processing such as acid or alkali processing is low, the recovery cost of valuable metals becomes high and profitable. Absent. In such a case, the present situation is that it is treated as waste.
- An object of the present invention is to solve the above-mentioned problems of the prior art. From an Al composite material to which In, Si and Ti are added, which can be reacted and dissolved in an atmosphere containing moisture, It is an object to provide an Al sprayed film, a manufacturing method of the Al sprayed film, and a film forming chamber constituent member covered with the Al sprayed film.
- the water-reactive Al composite material of the present invention comprises Al, 2.0 to 3.5 wt%, preferably 2.5 to 3.0 wt% In, 0.2 to 0.5 wt% Si based on Al. 0.13 to 0.25 wt%, preferably 0.15 to 0.25 wt%, and more preferably 0.17 to 0.23 wt% Ti.
- the Al composite material Since the Al composite material has such a configuration, the Al sprayed film obtained from these materials easily reacts in an atmosphere containing moisture to generate hydrogen and dissolve.
- the reactivity between the Al sprayed film and water tends to decrease, and if it exceeds 3.5 wt%, the reactivity between the Al sprayed film and water tends to be very high, In some cases, the Al sprayed film may be difficult to handle, and as the amount of In increases, the cost increases. Further, if Si is less than 0.2 wt%, the control effect of the reactivity between the Al sprayed film and water tends to decrease, and if it exceeds 0.5 wt%, the reactivity between the Al sprayed film and water decreases.
- the Ti addition amount is preferably 0.15 wt% or more, more preferably 0.17 wt% or more in consideration of the Si addition amount or impurity concentration such as Cu, and 0.23 wt% or less in consideration of Ti segregation. preferable.
- the method for producing a water-reactive Al sprayed film of the present invention is based on Al, based on Al, 2.0 to 3.5 wt%, preferably 2.5 to 3.0 wt% In, 0.2 to 0.5 wt%. % Of Si and 0.13 to 0.25 wt%, preferably 0.15 to 0.25 wt%, and more preferably 0.17 to 0.23 wt% Ti added material so that the composition is uniform
- the film is formed by melting and spraying the molten material on the surface of the base material and rapidly solidifying it.
- the water reactive Al sprayed film of the present invention is characterized by comprising the above water reactive Al composite material.
- the constituent member for the film forming chamber of the film forming apparatus of the present invention is characterized in that the water reactive Al sprayed film is provided on the surface.
- the above-mentioned constituent member is a deposition plate, a shutter or a mask.
- the Al sprayed film made of the water-reactive Al composite material of the present invention can be easily manufactured at a low cost by a simple process.
- This Al sprayed film also has the property of reacting and dissolving in an atmosphere in which moisture exists even after a thermal history from a film forming process of about 250 to 300 ° C., and a predetermined amount of Si and Ti.
- a thermal history from a film forming process of about 250 to 300 ° C.
- a predetermined amount of Si and Ti By adding, it is possible to control the initial reactivity (activity) and solubility before receiving thermal history (when forming a film), and to maintain the solubility of the Al sprayed film after receiving thermal history. Play.
- the Al sprayed film of the present invention has the effect of improving the weather resistance and the strength by adding Si.
- the constituent member for the film forming chamber covered with this water reactive Al sprayed film for example, If a film is formed using a film forming apparatus equipped with a deposition plate, a shutter, a mask, etc., an unavoidable adhesion film made of a deposition material that adheres to the surface of the deposition plate or the like during the deposition process is formed. Film removal / separation is achieved by reaction and dissolution of the Al sprayed film, and valuable metals as film-forming materials can be easily recovered from the film that has been removed, and the number of reuses of components increases. Play.
- FIG. 6 is a graph showing a relationship between a heat treatment temperature (° C.) and a dissolution current density (mA / cm 2 ) for an Al sprayed film obtained from the Al—In—Ti composite material obtained in Reference Example 2.
- the graph which shows the relationship between the heat processing time (hr) with respect to Al sprayed film obtained in Example 1, and film removal time (hr).
- the graph which shows the relationship between the heat processing time (hr) with respect to Al sprayed film obtained in Example 2, and film removal time (hr).
- FIG. 6 is a photograph showing the weather resistance of the Al sprayed film obtained in Example 7, wherein (a-1) and (a-2) are (b) before and after the test of the conventional Al sprayed film, respectively. -1) and (b-2) are the cases before and after the test of the Al sprayed film according to the present invention, respectively.
- the film forming chamber undergoes a repeated thermal history. Therefore, the surface of the constituent member provided in the film forming chamber such as the deposition preventing plate coated with the Al sprayed film of the present invention also undergoes repeated heat history. Therefore, the film at the time of thermal spray deposition before receiving the thermal history is stable and easy to handle, and the Al thermal sprayed film to which an unavoidable deposited film after passing through the thermal history in the deposition process is also deposited from the substrate. It is necessary to have solubility (activity) that can be easily removed, and to be stable. In the case of the water reactive Al sprayed film of the present invention, such solubility is sufficiently satisfied.
- the upper limit temperature of the heat history in the film formation chamber is about 250 to 300 ° C. (for example, by measuring the temperature of the deposition plate) in the case of film formation by sputtering, vacuum deposition, ion plating, CVD, or the like.
- the Al sprayed film having a heat history up to 250 ° C. has water reactivity, and preferably an Al sprayed film having a heat history up to 300 ° C. is used. It is even better if it has water reactivity.
- the water-reactive Al sprayed film according to the present invention sufficiently satisfies such solubility.
- This measurement method is a method of measuring a mass decrease before and after immersion of the sample in the treatment liquid and converting it to a current density value from the surface area, treatment liquid immersion time, and the like. If the dissolution current density measured by this method is 50 mA / cm 2 or more, the Al sprayed film with the unavoidable deposited film after the thermal history in the deposition process is easily removed from the substrate together with the deposited film. It can be said that the film has solubility (activity) that can be formed into a film.
- Al used in the present invention has a purity of 2N (99%), 3N (99.9%), 4N (99.99%), and 5N (99.999%).
- 4NAl and 5NAl are, for example, electrolytic methods.
- 2NAl and 3NAl obtained by the above are obtained by a three-layer electrolysis method or a method using a temperature difference between a solid phase and a liquid phase during solidification by a partial solidification method (segregation method).
- the main impurities in these Al are Fe and Si, and Cu, Ni, C, etc. are included in addition.
- the electrochemical potential difference between Al and In is very large, but if an Al natural oxide film exists, the ionization of Al does not proceed. However, once the natural oxide film is broken and Al is directly bonded to In, the potential difference rapidly promotes the ionization of Al. At that time, In is present in a highly dispersed state in the Al crystal grains as it is without being chemically changed. Since In has a low melting point (157 ° C.) and does not form a solid solution with Al, a material obtained by melting Al and In so as to have a uniform composition while paying attention to the difference in density between Al and In is used. When thermal spraying is performed on the substrate according to the thermal spraying method, a desired film is obtained by rapid solidification and its compression effect.
- the added In is highly dispersed in the Al crystal grains by the thermal spraying process, and is kept in direct contact with Al. Since In does not form a stable layer with Al, the Al / In interface retains high energy and reacts violently at the contact surface with moisture in an atmosphere where moisture exists.
- the reaction product mainly composed of AlOOH is pulverized without filming on the surface due to the mechanical action caused by the expansion of the generated H 2 bubbles. Dispersed into the liquid, the dissolution reaction proceeds continuously and explosively at the reaction interface that is renewed one after another.
- the Al—In system behavior as described above is particularly remarkable when the Al purity is higher, that is, when 4N and 5N are used rather than 3N.
- the Al sprayed film made of the 4NAl—In composite material has high activity in the state formed through the thermal spraying process, has high solubility in an atmosphere containing moisture, and is difficult to handle.
- the resulting Al sprayed film is reduced in initial reactivity (activity) and becomes easy to handle, and with the addition of Ti, thermal spraying after passing through a thermal history.
- the film becomes active, exhibits high solubility (activity) in an atmosphere where moisture exists, and enables removal of the Al sprayed film.
- the addition of Si increases the strength of the Al sprayed film as the amount added increases, and is about 1.7 times that of the Al sprayed film made of 5NAl-3wt% In, and the weather resistance is 5NAl-3wt%. There is a clear difference compared to the Al sprayed film made of In.
- the Al sprayed film is formed on the surface of a substrate to be treated in a predetermined atmosphere according to a spraying method using an Al—In—Si—Ti composite material in which In, Si and Ti are uniformly dispersed in Al. It is manufactured by.
- the obtained Al-In-Si-Ti sprayed film contains In crystal grains (grain size of 10 nm or less) etc. uniformly and highly dispersed in Al crystal grains.
- the Al sprayed film is manufactured, for example, as follows. 4NAl, In, Si and Ti are prepared, and 2.0 to 3.5 wt%, preferably 2.5 to 3.0 wt% In, 0.2 to 0.5 wt% based on the Al based on the Al. % Si and 0.13 to 0.25 wt%, preferably 0.15 to 0.25 wt%, more preferably 0.17 to 0.23 wt% Ti, and In, Si and Ti are mixed in Al.
- a material that has been uniformly melted and processed into a rod or wire shape as a spraying material, sprayed onto the surface of a substrate such as a deposition chamber component such as a deposition plate of a deposition apparatus, for example, by flame spraying.
- the substrate provided with the desired water-reactive Al sprayed film can be produced by rapid solidification and coating. As described above, the sprayed film thus obtained is a film in which In or the like is uniformly and highly dispersed in Al crystal grains.
- an Al sprayed film obtained by adding a predetermined amount of Si and Ti to an Al—In system as described above the solubility of the film as formed by spraying can be controlled, so that It becomes possible to prevent dissolution of the sprayed film due to the reaction with water, and it becomes easy to handle.
- the upper limit of the temperature due to the thermal history in the film forming chamber is about 300 ° C. or about 350 ° C.
- an Al sprayed film is formed using an Al composite material to which a predetermined amount of In, Si and Ti is added. In this case, practical solubility can be obtained.
- the reaction starts immediately after the immersion.
- water becomes black due to the deposited In and the like, and finally the sprayed film is completely dissolved, and the precipitate made of Al, In, Si, Ti, etc. in the warm water. Remains. This reaction proceeds more vigorously as the water temperature is higher.
- the above-mentioned sprayed film has been described with an example of flame spraying using a rod or wire-shaped material, flame spraying using a powdery material may be used, and arc spraying or plasma spraying may also be used.
- flame spraying using a powdery material may be used, and arc spraying or plasma spraying may also be used.
- the above-mentioned raw materials are melted under a known process condition, sprayed on the surface of the base material, and rapidly solidified to form a sprayed film.
- a deposition chamber constituent member such as a deposition plate or a shutter provided in the deposition chamber of the deposition apparatus.
- the deposited film can be easily removed from the film forming chamber constituent member to which the film forming material inevitably adheres, and valuable metals can be easily recovered.
- the film forming material is an expensive metal such as a noble metal or a rare metal
- the film made of the water-reactive Al composite material of the present invention is applied to a component for a film forming chamber such as a deposition plate
- a component for a film forming chamber such as a deposition plate
- the attached film made of the film forming material can be removed, so no precious metal is involved without contamination.
- rare metals can be recovered. The recovery cost is low, and the film forming material can be recovered with high quality.
- the substrate with Al sprayed film in the state before being subjected to the heat treatment (0 ° C.) and the substrate with Al sprayed film after the heat treatment are immersed in 300 ml of deionized water at 80 ° C., soaking the solubility of the Al sprayed film.
- the current density of the liquid was measured and examined.
- the relationship between the addition of Si and the solubility of the obtained Al sprayed film is determined by adding a predetermined amount of Si to the activity of the Al sprayed film before being subjected to the heat treatment as formed by spraying, that is, dissolution. It turns out that sex can be controlled. However, when the heat treatment temperature is high, for example, 250 to 350 ° C., there is a tendency that practical solubility cannot be obtained.
- Al, In, and Ti are blended at a predetermined ratio, and using a thermal spray material in which In and Ti are uniformly dissolved in Al and processed into a rod shape, a flame type flame spray (heat source: C 2 H 2 ⁇ O 2 gas (about 3000 ° C.) was sprayed on the surface of the base material made of aluminum in an air atmosphere to form an Al sprayed film.
- a flame type flame spray heat source: C 2 H 2 ⁇ O 2 gas (about 3000 ° C.) was sprayed on the surface of the base material made of aluminum in an air atmosphere to form an Al sprayed film.
- Each of the Al sprayed films thus obtained was subjected to heat treatment at 0 to 350 ° C. (in the atmosphere, for 1 hour, furnace cooling) instead of the thermal history received from the film forming process.
- the substrate with Al sprayed film in a state before being subjected to heat treatment (0 ° C.) and the substrate with Al sprayed film after the heat treatment are immersed in 300 ml of deionized water at 80 ° C.
- the current density of the immersion liquid was measured and examined. The obtained results are shown in FIG. In FIG. 1, the horizontal axis is the heat treatment temperature (° C.), and the vertical axis is the dissolution current density (mA / cm 2 ).
- the solubility of the obtained Al sprayed film tends to vary greatly from an In concentration of about 2 wt%, and in particular, a heat treatment at 250 ° C. or higher was performed.
- the solubility of the Al sprayed film shows approximately the same value between about 2 wt% and about 3 wt%.
- the In concentration is less than 2 wt%, the solubility of the Al sprayed film that has been heat-treated at 250 ° C. or more tends to be low. For this reason, although not shown in FIG.
- the In concentration is at least about 2 wt% or more. It seems that about 5 wt% or less is appropriate for achieving the object of the present invention.
- the reactivity of the Al sprayed film heat-treated at high temperature is high. That is, the higher the In concentration, the higher the reactivity.
- the in concentration is in the range of about 2 to 3 wt%, it is considered that the solubility of the Al sprayed film subjected to the heat treatment at a high temperature is preferable.
- 4NAl-3.0 wt% In-0.2 wt% Si-0 Obtained by blending 4NAl, In, Si, and Ti at a predetermined ratio and uniformly dissolving In, Si, and Ti in Al.
- flame-type flame spraying heat source: C 2 H 2 —O 2 gas, about 3000 ° C.
- an Al sprayed film was formed by spraying on the surface of a base material made of aluminum in an air atmosphere.
- the Al sprayed film (pseudodeposition film) thus obtained was subjected to a heat treatment time (0 to 500 hours) at 250 ° C. in the atmosphere and a film removal property (film removal time (hours) by immersion in deionized water at 80 ° C. )).
- a film removal property film removal time (hours) by immersion in deionized water at 80 ° C. )
- the film removal property was also examined in the same manner as described above for an Al sprayed film (conventional Al sprayed film (pseudo deposit film)) made of 5NAl-3.0 wt% In.
- the horizontal axis represents the heat treatment time (hour) at 250 ° C.
- the vertical axis represents the film removal time (time) of the pseudo deposition film.
- 4NAl-3.0 wt% In-0.58 wt% Si-0. 4 NAl, In, Si, and Ti were blended at a predetermined ratio, and In, Si, and Ti were uniformly dissolved in Al. 18 wt% Ti (addition amounts of In, Si and Ti are based on Al weight), 4 NAl-3.0 wt% In-0.54 wt% Si-0.18 wt% Ti, and 4 NAl-2.77 wt% In-0.
- the horizontal axis represents the heat treatment time (hours) at 250 ° C.
- the vertical axis represents the pseudodeposition film removal time (hours).
- both the Al sprayed film (pseudo deposit film) containing Si in an amount exceeding 0.5 wt% and the conventional Al sprayed film were not removed when the heat treatment time exceeded about 160 hours.
- the Al sprayed film (pseudodeposited film) of the present invention containing 0.5 wt% or less of Si could be removed in about 30 minutes or less up to about 250 hours of heat treatment time.
- a flame-type flame spray using a sprayed material in which Al, In, Si, Ti, and Cu are blended at a predetermined ratio, and In, Si, Ti, and Cu are uniformly dissolved in Al and processed into a rod shape.
- C 2 H 2 —O 2 gas approximately 3000 ° C.
- Each of the Al sprayed films thus obtained was subjected to heat treatment at 0 to 350 ° C. (in the atmosphere, for 1 hour, furnace cooling) instead of the thermal history received from the film forming process.
- the substrate with Al sprayed film in a state (0 ° C.) before being subjected to the heat treatment and the substrate with Al sprayed film after the heat treatment (after the thermal history) were immersed in 300 ml of deionized water at 80 ° C.
- the solubility of the Al sprayed film was examined by measuring the current density of the immersion liquid. The obtained results are shown in FIG. 4 for the above (a) to (l).
- the horizontal axis represents the heat treatment temperature (° C.)
- the vertical axis represents the dissolution current density (mA / cm 2 ).
- the Ti addition amount is preferably 0.15 wt% or more, more preferably 0.17 wt% or more in consideration of the Si addition amount or impurity concentration of Cu or the like, and more preferably 0.17 wt% or more, and 0.23 wt% in consideration of Ti segregation. The following is preferred.
- the initial reactivity (activity) of the Al sprayed film before being subjected to the heat treatment as it is formed by thermal spraying that is, the solubility of the Al sprayed film can be controlled. It is possible to prevent dissolution of the Al sprayed film due to reaction with moisture in the air atmosphere.
- the upper limit of the temperature due to the thermal history in the film formation chamber is about 300 to 350 ° C., 2 to 3 wt% In, 0.2 to 0.5 wt% Si, 0.13 to 0.25 wt% If an Al sprayed film is formed using an Al composite material to which Ti is added, practical solubility can be obtained.
- the reaction starts immediately after the immersion, When hydrogen gas is generated vigorously and the reaction proceeds further, water is blackened due to the deposited In or the like. Finally, the Al sprayed film is pulverized by vigorous reaction with water, and the Al sprayed film is dissolved.
- the Al composite material of the present invention is water-reactive.
- the Al sprayed film in the present invention is not highly soluble in the stage before being subjected to the heat treatment as it is formed by thermal spraying, and has a property that is somewhat soluble in the stage after being subjected to the heat treatment. It is necessary to have.
- a predetermined time 10 ⁇ 3 Pa, DC plasma
- the Al sprayed film with the Cu sputtered film formed on the substrate shown in FIG. 6A is peeled off, and the Cu sputtered film formed on the substrate shown in FIG.
- the right end of the attached Al sprayed film is rolled up and peeled off.
- the Al sprayed film with the Cu sputtered film is easily removed at 80 ° C. for 19 minutes (see FIG. 7A), and easily removed at 96 ° C. for 6 minutes.
- the Al sprayed film with the Cu sputtered film was not removed at 80 ° C. for 3 hours (see FIG. 7B), and was not removed at 96 ° C. for 3 hours.
- AlOOH was precipitated in the warm water, and Cu could be easily recovered.
- Example 4 instead of Cu sputtering film formation in Example 4, the method described in Example 3 was repeated except that ITO sputtering film formation was performed, and a substrate with an ITO film adhered on an Al sprayed film was formed at a predetermined temperature.
- the film removal property was examined by treating with deionized water for a predetermined time.
- an ITO sputter film was formed thereon, and the film removal property was examined in the same manner as described above.
- ITO sputter film removal test Al sprayed film thickness: 150-200 ⁇ m Substrate temperature: 280 ° C ITO sputter film thickness: 0.7mm Sputtering time: 72 hours State during sputter deposition and film removal results: In the case of the Al sprayed film of the present invention, no peeling of the sputtered film was observed during the sputter deposition (see FIG. 8A). However, in the case of the conventional Al sprayed film, peeling of the sputtered film was observed during the sputtered film formation (see FIG. 8B).
- the Al sprayed film with the ITO sputtered film was easily removed at 80 ° C., but in the case of the conventional Al sprayed film, the film was not removed at 80 ° C. or 96 ° C.
- AlOOH was precipitated in the warm water, and the ITO film (In, Sn) could be easily recovered.
- Example 4 instead of Cu sputtering film formation in Example 4, the method described in Example 4 was repeated except that Mo sputtering film formation was performed, and the base material with the Mo film adhered on the Al sprayed film was fixed at a predetermined temperature. The film removal property was examined by treating with deionized water for a predetermined time. For comparison, in the case of the above-described conventional Al sprayed film, Mo sputtering film was formed thereon, and the film removal property was examined in the same manner as described above. These results are summarized below.
- FIG. 10 (a) shows the state immediately after immersion of the Al sprayed film with the Mo sputtered film in 80 ° C. deionized water
- FIG. 10 (b) shows the state during the reaction
- FIG. 10 (c) shows the Mo sputtered state.
- the state where the Al sprayed film with film is removed from the base material (base material) is shown. At this time, AlOOH was precipitated in the warm water, and thus Mo could be easily recovered.
- An aluminum base whose surface is coated with an Al sprayed film (thickness: 200 ⁇ m) made of 4NAl-3.0 wt% In-0.2 wt% Si-0.2 wt% Ti obtained according to the method described in Example 1 A material (40 mm ⁇ 40 mm ⁇ 20 mm thickness) was used, and its weather resistance was examined. The weather resistance test was performed by placing a sample in a constant temperature / humidity furnace set to a temperature of 40 ° C. and a humidity of 85% RH, leaving the sample for 6 hours, and observing the surface condition. For comparison, the weather resistance of the Al sprayed film (conventional Al sprayed film) made of 5NAl-3.0 wt% In was examined in the same manner as described above. The results are shown in FIGS. 11 (a-1), (a-2), (b-1) and (b-2).
- a composition in a vacuum film forming apparatus for forming a metal or metal compound thin film by sputtering, vacuum deposition, ion plating, CVD or the like is used. If the surface of the film chamber constituent member is coated, the inevitable attached film adhering to the surface of the film chamber constituent member during the film forming process is removed and collected in an atmosphere containing moisture. Can do. Therefore, the present invention increases the number of times the constituent members for the film forming chamber are reused and includes valuable metals in the field where these film forming apparatuses are used, for example, in the technical field such as semiconductor elements and electronic equipment. It can be used to recover the membrane material.
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Abstract
Description
4NAlとInとSiとを所定の割合で配合して、Al中にIn及びSiを均一に溶解させて得られた4NAl-3.0wt%In-0.1wt%Si(In及びSiの添加量は、Al重量基準)をロッド形状に加工した溶射材料を用い、溶棒式フレーム溶射(熱源:C2H2-O2ガス、約3000℃)によって、大気雰囲気中で、アルミニウムからなる基材の表面に吹き付けてAl溶射膜を形成した。かくして得られたAl溶射膜に対して、成膜プロセスから受ける熱履歴の代わりに0~350℃の熱処理(大気中、1時間、炉冷)を施した。熱処理を受ける前の状態(0℃)のAl溶射膜付基材及び熱処理を経た後のAl溶射膜付基材を80℃の脱イオン水300ml中に浸漬し、Al溶射膜の溶解性を浸漬液の電流密度を測定して検討した。
Alとして4NAlを用い、以下のAl-In-Ti組成(a)~(d)におけるIn及びTi添加効果を検討した。In及びTiの添加量は、Al重量基準である。
(a)4NAl-2.1wt%In-0.19wt%Ti
(b)4NAl-1.2wt%In-0.18wt%Ti
(c)4NAl-1.8wt%In-0.20wt%Ti
(d)4NAl-3.0wt%In-0.17wt%Ti
(a)3NAl-2.09wt%In-0.1wt%Ti
(b)4NAl-2.89wt%In-0.13wt%Ti
(c)4NAl-3.33wt%In-0.004wt%Cu-0.17wt%Ti
(d)4NAl-3.09wt%In-0.17wt%Ti
(e)3NAl-3.1wt%In-0.11wt%Ti
(f)3NAl-2.78wt%In-0.11wt%Ti
(g)4NAl-2.9wt%In-0.12Si-0.06wt%Ti
(h)4NAl-2.8wt%In-0.22wt%Si-0.21wt%Ti
(i)4NAl-3.0wt%In-0.2wt%Si-0.13wt%Ti
(j)4NAl-2.8wt%In-0.28wt%Si-0.15wt%Ti
(k)4NAl-3.0wt%In-0.30wt%Si-0.23wt%Ti
(l)4NAl-3.0wt%In-0.21wt%Si-0.21wt%Ti
(m)4NAl-2.0wt%In-0.40wt%Si-0.17wt%Ti
(n)4NAl-2.5wt%In-0.50wt%Si-0.25wt%Ti
(o)4NAl-2.0wt%In-0.55wt%Si-0.30wt%Ti
(p)4NAl-2.5wt%In-0.18wt%Si-0.1wt%Ti
Al溶射膜厚:150~200μm
基材温度:280℃
Cuスパッタ膜厚:2.5mm
スパッタ時間:130時間
スパッタ成膜中の状態及び除膜性の結果:本発明のAl溶射膜の場合、凹凸のある基材及びフラットな基材の両方とも、スパッタ成膜中にスパッタ膜の剥がれは観察されなかったが(凹凸のある基材を使用した場合を図5(a)に示し、フラット基材を使用した場合を図5(b)に示す)、従来のAl溶射膜の場合、凹凸のある基材及びフラットな基材の両方とも、スパッタ成膜中にスパッタ膜の剥がれが観察された(凹凸のある基材を使用した場合を図6(a)に示し、フラット基材を使用した場合を図6(b)に示す)。すなわち、図6(a)に示す基材上に成膜されたCuスパッタ膜付きAl溶射膜の一部が剥がれ、また、図6(b)に示す基材上に成膜されたCuスパッタ膜付きAl溶射膜の右端部が捲れ上がって剥がれている。また、本発明のAl溶射膜の場合、Cuスパッタ膜付きAl溶射膜は80℃、19分で容易に除膜され(図7(a)参照)、96℃では6分で容易に除膜されたが、従来のAl溶射膜の場合、Cuスパッタ膜付きAl溶射膜は80℃、3時間でも除膜されず(図7(b)参照)、96℃、3時間でも除膜されなかった。本発明の場合、温水中にはAlOOHが沈殿しており、Cuを容易に回収できた。
Al溶射膜厚:150~200μm
基材温度:280℃
ITOスパッタ膜厚:0.7mm
スパッタ時間:72時間
スパッタ成膜中の状態及び除膜性の結果:本発明のAl溶射膜の場合、スパッタ成膜中にスパッタ膜の剥がれは観察されなかった(図8(a)参照)。しかし、従来のAl溶射膜の場合、スパッタ成膜中にスパッタ膜の剥がれが観察された(図8(b)参照)。また、本発明のAl溶射膜の場合、ITOスパッタ膜付きAl溶射膜は80℃で容易に除膜されたが、従来のAl溶射膜の場合、80℃でも96℃でも除膜されなかった。本発明の場合、温水中にはAlOOHが沈殿しており、ITO膜(In、Sn)を容易に回収できた。
Al溶射膜厚:150~200μm
基材温度:220℃
Moスパッタ膜厚:0.7mm
スパッタ時間:72時間
スパッタ成膜中の状態及び除膜性の結果:本発明のAl溶射膜の場合、表面に凹凸のある基材及び表面がフラットな基材の両方とも、スパッタ成膜中にスパッタ膜の剥がれは観察されなかった(フラット基材を使用した場合を図9(a)に示し、凹凸のある基材を使用した場合を図9(b)に示す)。しかし、従来のAl溶射膜の場合、凹凸のある基材及びフラットな基材の両方とも、スパッタ成膜中にスパッタ膜の剥がれが観察された。また、本発明のAl溶射膜の場合、Moスパッタ膜付きAl溶射膜は80℃、8分程度で容易に除膜されたが(図10(a)、(b)及び(c)参照)、従来のAl溶射膜の場合、Moスパッタ膜付きAl溶射膜は80℃、96℃でも除膜されなかった。
Claims (5)
- Alに、Al基準で、2.0~3.5wt%のIn、0.2~0.5wt%のSi、0.13~0.25wt%のTiを添加してなることを特徴とする水反応性Al複合材料。
- Alに、Al基準で、2.0~3.5wt%のIn、0.2~0.5wt%のSi、及び0.13~0.25wt%のTiを添加した材料を組成が均一になるように溶融し、この溶融材料を、基材表面に対して溶射して急冷凝固させることにより成膜することを特徴とする水反応性Al溶射膜の製造方法。
- 請求項1記載の水反応性Al複合材料からなることを特徴とする水反応性Al溶射膜。
- 請求項1記載の水反応性Al複合材料からなる水反応性Al溶射膜又は請求項2記載の方法により製造された水反応性Al溶射膜を表面に備えたことを特徴とする成膜装置の成膜室用構成部材。
- 前記構成部材が、防着板、シャッター又はマスクであることを特徴とする請求項4記載の成膜室用構成部材。
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KR1020137007585A KR101502253B1 (ko) | 2010-08-27 | 2011-08-12 | 수 반응성 Al 복합 재료, 수 반응성 Al 용사막, 이 Al 용사막의 제조 방법, 및 성막실용 구성 부재 |
US13/818,253 US8945296B2 (en) | 2010-08-27 | 2011-08-12 | Water-reactive Al-based composite material, water-reactive Al-based thermally sprayed film, process for production of such Al-based thermally sprayed film, and constituent member for film-forming chamber |
CN201180041807.4A CN103228814B (zh) | 2010-08-27 | 2011-08-12 | 水反应性Al复合材料、水反应性Al喷镀膜、该Al喷镀膜的制造方法及成膜室用构成构件 |
JP2012530625A JP5517371B2 (ja) | 2010-08-27 | 2011-08-12 | 水反応性Al溶射膜、このAl溶射膜の製造方法、及び成膜室用構成部材 |
SG2013012141A SG188239A1 (en) | 2010-08-27 | 2011-08-12 | Water-reactive al-based composite material, water-reactive al-based thermally sprayed film, process for production of such al-based thermally sprayed film, and constituent member for film-forming chamber |
DE112011102835.0T DE112011102835B4 (de) | 2010-08-27 | 2011-08-12 | Wasserreaktives, Al-basiertes Verbundmaterial, wasserreaktiver, Al-basierter,thermisch gespritzter Film, Verfahren für die Herstellung eines solchen Al-basierten, thermisch gespritzten Films und Bestandteil für eine Filmbildungskammer |
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ITBA20130034A1 (it) * | 2013-04-30 | 2014-10-31 | Mrs S R L | Metodo per la pulizia di superfici in apparati di deposizione di film sottili da fase vapore e per il recupero del materiale rimosso |
JP2016056396A (ja) * | 2014-09-05 | 2016-04-21 | 株式会社アルバック | 水反応性Al合金溶射膜の製造方法、及び成膜室用構成部材 |
JP2017203666A (ja) * | 2016-05-10 | 2017-11-16 | 株式会社アルバック | 水分検出素子製造方法、水崩壊性配線膜製造方法、水崩壊性薄膜製造方法、水分検出素子 |
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EP2281914B1 (en) * | 2008-04-30 | 2015-02-25 | Ulvac, Inc. | PROCESS FOR PRODUCTION OF WATER-REACTIVE Al FILM AND CONSTITUENT MEMBERS FOR FILM DEPOSITION CHAMBERS |
CN106232854B (zh) * | 2014-09-05 | 2017-10-13 | 株式会社爱发科 | 水反应性Al复合材料、水反应性Al合金喷镀膜、该膜的制法及成膜室用构成部件 |
CN106702319A (zh) * | 2017-03-30 | 2017-05-24 | 京东方科技集团股份有限公司 | 一种蒸镀方法 |
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CN109576648A (zh) * | 2018-12-29 | 2019-04-05 | 福建华佳彩有限公司 | 一种防着板 |
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US8945296B2 (en) | 2015-02-03 |
TWI473885B (zh) | 2015-02-21 |
US20130145961A1 (en) | 2013-06-13 |
DE112011102835T8 (de) | 2013-07-04 |
CN103228814A (zh) | 2013-07-31 |
JP5517371B2 (ja) | 2014-06-11 |
KR101502253B1 (ko) | 2015-03-12 |
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DE112011102835T5 (de) | 2013-06-13 |
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