WO2022254945A1 - マスク治具、成膜方法および成膜装置 - Google Patents
マスク治具、成膜方法および成膜装置 Download PDFInfo
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- WO2022254945A1 WO2022254945A1 PCT/JP2022/016145 JP2022016145W WO2022254945A1 WO 2022254945 A1 WO2022254945 A1 WO 2022254945A1 JP 2022016145 W JP2022016145 W JP 2022016145W WO 2022254945 A1 WO2022254945 A1 WO 2022254945A1
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- Prior art keywords
- hole
- mask
- film
- diameter
- mask jig
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 28
- 230000000873 masking effect Effects 0.000 title abstract 2
- 230000015572 biosynthetic process Effects 0.000 title description 31
- 239000000758 substrate Substances 0.000 claims abstract description 38
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- 239000000843 powder Substances 0.000 claims description 31
- 238000007751 thermal spraying Methods 0.000 claims description 9
- 238000005507 spraying Methods 0.000 claims description 2
- 239000010408 film Substances 0.000 description 92
- 239000007789 gas Substances 0.000 description 36
- 238000005755 formation reaction Methods 0.000 description 29
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 13
- 238000000151 deposition Methods 0.000 description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 9
- 229910052782 aluminium Inorganic materials 0.000 description 9
- 229910052802 copper Inorganic materials 0.000 description 9
- 239000010949 copper Substances 0.000 description 9
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- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
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- 229910000831 Steel Inorganic materials 0.000 description 1
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- 239000010962 carbon steel Substances 0.000 description 1
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Images
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
- C23C24/00—Coating starting from inorganic powder
- C23C24/02—Coating starting from inorganic powder by application of pressure only
- C23C24/04—Impact or kinetic deposition of particles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/16—Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling the spray area
- B05B12/20—Masking elements, i.e. elements defining uncoated areas on an object to be coated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/16—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed
-
- 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
- C23C4/01—Selective coating, e.g. pattern coating, without pre-treatment of the material to be coated
Definitions
- the present disclosure relates to a mask jig, a film forming method, and a film forming apparatus.
- the cold spray method which is one of the thermal spraying methods.
- a film is formed on a substrate by injecting a film-forming material together with a carrier gas onto the substrate (see, for example, JP-A-2017-170369).
- a mask jig arranged on the surface of the substrate is used to define the film formation range (see, for example, Japanese Patent Application Laid-Open No. 2002-361135).
- the planar shape of the film-forming region can be defined.
- JP 2017-170369 A JP-A-2002-361135
- a film made of a film-forming material is also formed on the surface of the mask jig.
- the process conditions (film formation conditions) when the film formation material is supplied to the surface of the substrate through the through-holes of the mask jig are set at the beginning of the film formation. conditions may vary. As a result, it becomes difficult to stably form a film on the surface of the substrate. Furthermore, in order to ensure the quality of the film formed on the surface of the base material, it is necessary to perform processing such as removal of the film formed on the surface of the mask jig at regular intervals.
- Japanese Patent Application Laid-Open No. 2002-361135 discusses suppression of film formation on the surface of the mask jig. However, from the viewpoint of more efficiently forming a film of stable quality on the surface of the base material, it is preferable to make further improvements such as manufacturing the mask jig with a material that is difficult to form a film.
- An object of the present disclosure is to provide a mask jig, a film forming method, and a film forming apparatus capable of efficiently forming a film of stable quality on the surface of a substrate.
- a mask jig according to the present disclosure is used in thermal spraying.
- the mask jig has a main body and a mask cover.
- the body portion includes a first surface and a second surface opposite the first surface.
- the mask cover is arranged on the second surface side of the main body so as to overlap with the main body, and includes a third surface and a fourth surface opposite to the third surface.
- the mask cover is made of imide resin.
- the film formation method includes the step of arranging the mask jig so as to face the surface of the substrate.
- the mask jig is arranged such that the first surface of the mask jig faces the surface of the substrate.
- a film forming method includes a step of spraying a film forming material powder onto the surface of a substrate by a cold spray method through the first through holes and the second through holes of the mask jig.
- a film forming apparatus includes a spray gun including a nozzle, a powder supply section, a gas supply section, and the mask jig.
- the powder supply unit supplies powder to the spray gun as a film-forming raw material.
- a gas supply supplies the operating gas to the spray gun.
- a mask jig is placed between the substrate and the spray gun.
- a film of stable quality can be efficiently formed on the surface of the substrate.
- FIG. 1 is a schematic diagram showing the configuration of a film forming apparatus according to an embodiment
- FIG. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic cross-sectional view showing a mask jig according to the present embodiment, a substrate on which it is installed, and a base jig
- FIG. 3 is a schematic cross-sectional view showing an enlarged first example of a mode of a region A surrounded by a dotted line in FIG. 2
- FIG. 3 is a schematic cross-sectional view enlarging and showing a second example of a mode of a region A surrounded by a dotted line in FIG.
- FIG. 2 3 is a schematic cross-sectional view enlarging and showing a third example of a mode of a region A surrounded by a dotted line in FIG. 2;
- FIG. FIG. 3 is a schematic cross-sectional view showing an enlarged fourth example of a mode of a region A surrounded by a dotted line in FIG. 2;
- 3 is a schematic cross-sectional view showing an enlarged fifth example of the aspect of the region A surrounded by the dotted line in FIG. 2;
- FIG. 3 is a schematic cross-sectional view generally showing a further modification of the mask jig of FIG. 2;
- FIG. 4 is a flow chart showing a film forming method according to this embodiment.
- FIG. 4 is a flow chart showing a film forming method according to this embodiment.
- FIG. 11 is a schematic cross-sectional view showing a first example of a mask jig used in Example 3;
- FIG. 11 is a schematic cross-sectional view showing a second example of a mask jig used in Example 3;
- FIG. 11 is a schematic cross-sectional view showing a third example of a mask jig used in Example 3;
- 11 is a photograph of the deposition state of the film-forming raw material on the inner wall of the inclined portion formed in the body portion of the sample 11 of Example 3, viewed from above.
- 10 is a top view of a deposition state of a film-forming raw material on an inner wall of an inclined portion formed in a body portion of a sample 12 of Example 3.
- FIG. 10 is a photograph of the state of deposition of the film-forming raw material on the inner wall of the inclined portion formed in the body portion of the sample 13 of Example 3, viewed from above.
- FIG. 1 is a schematic diagram showing the configuration of a film forming apparatus according to this embodiment.
- a film forming apparatus 100 mainly includes a spray gun 2 including a nozzle 2b, a powder supply section 3, a gas supply section 4, and a mask jig 1. As shown in FIG.
- the spray gun 2 mainly includes a spray gun body 2a, a nozzle 2b, a heater 2c, and a temperature sensor 9.
- a nozzle 2b is connected to the first end, which is the tip side of the spray gun main body 2a.
- a pipe 6 is connected to the second end, which is the rear end side of the spray gun main body 2a.
- the pipe 6 is connected to the gas supply section 4 via a valve 7 .
- a gas supply unit 4 supplies working gas to the spray gun 2 through a pipe 6 . By opening and closing the valve 7, it is possible to control the state of supply of the working gas from the gas supply section 4 to the spray gun 2.
- a pressure sensor 8 is installed in the pipe 6 .
- a pressure sensor 8 measures the pressure of the working gas supplied from the gas supply unit 4 to the pipe 6 .
- the working gas supplied from the second end of the spray gun main body 2a to the interior of the spray gun main body 2a is heated by the heater 2c.
- the heater 2c is arranged on the second end side of the spray gun body 2a.
- the working gas flows along the arrow 31 inside the spray gun main body 2a.
- a temperature sensor 9 is connected to the connecting portion between the nozzle 2b and the spray gun body portion 2a.
- a temperature sensor 9 measures the temperature of the working gas flowing inside the spray gun body 2a.
- a pipe 5 is connected to the nozzle 2b.
- a pipe 5 is connected to the powder supply section 3 .
- the powder supply unit 3 supplies the powder, which is a film-forming raw material, to the nozzle 2 b of the spray gun 2 through the pipe 5 .
- the mask jig 1 is arranged between the substrate 20 and the spray gun 2.
- the mask jig 1 is formed with a first through hole 11c and a second through hole 12a (see FIG. 2).
- the first through-holes 11c and the second through-holes 12a define film formation areas on the surface of the substrate 20 .
- a specific configuration of the mask jig 1 will be described later.
- the working gas is supplied from the gas supply section 4 to the spray gun 2 through the pipe 6 as indicated by arrow 30 .
- Nitrogen, helium, dry air or mixtures thereof can be used as the working gas, for example.
- the working gas pressure is, for example, about 1 MPa.
- the flow rate of the working gas is, for example, 300 L/min or more and 500 L/min or less.
- the working gas supplied to the second end of the spray gun body 2a is heated by the heater 2c.
- the heating temperature of the working gas is appropriately set according to the composition of the film-forming raw material, and can be, for example, 100° C. or higher and 500° C. or lower.
- the working gas flows from the spray gun body 2a to the nozzle 2b.
- the nozzle 2b is supplied with powder 10 as a film-forming raw material from the powder supply section 3 through the pipe 5 as indicated by an arrow 32.
- powder 10 for example, nickel powder, tin powder, or a mixed material of tin powder and zinc powder can be used.
- powder such as aluminum powder may be used as the powder.
- the particle size of powder 10 is, for example, 1 ⁇ m or more and 50 ⁇ m or less.
- the powder 10 supplied to the nozzle 2b is jetted from the tip of the nozzle 2b toward the substrate 20 together with the working gas.
- a mask jig 1 is arranged on the surface of the base material 20 .
- the sprayed powder 10 reaches the surface of the substrate 20 through the first through-hole 11c and the second through-hole 12a (see FIG. 2) of the mask jig 1.
- a film is formed on the surface of the substrate 20 using the injected powder 10 as a raw material.
- FIG. 2 is a schematic cross-sectional view showing the mask jig according to the present embodiment, and the substrate and base jig on which it is installed.
- mask jig 1 is used in a cold spray method, which is an example of thermal spraying.
- the mask jig 1 has a body portion 11 and a mask cover 12 .
- the body portion 11 includes a first surface 11s1 and a second surface 11s2.
- the second surface 11s2 is positioned opposite to the first surface 11s1.
- the first surface 11s1 and the second surface 11s2 are rectangular, for example.
- the distance from the first surface 11s1 to the second surface 11s2, which is the thickness of the body portion 11, is substantially constant throughout the body portion 11. As shown in FIG. Therefore, the body portion 11 is a plate-like member having a rectangular planar shape.
- the mask cover 12 includes a third surface 12s1 and a fourth surface 12s2.
- the fourth surface 12s2 is located on the side opposite to the third surface 12s1.
- the third surface 12s1 and the fourth surface 12s2 are rectangular, for example.
- the distance from the third surface 12s1 to the fourth surface 12s2, which is the thickness T of the mask cover 12, is substantially constant over the entire mask cover 12.
- the mask cover 12 is a plate-like member having a rectangular planar shape.
- the mask cover 12 is arranged on the second surface 11 s 2 side of the main body 11 , that is, on the upper side in FIG. 2 so as to overlap the main body 11 .
- the mask cover 12 is arranged such that the third surface 12s1 faces the second surface 11s2 of the body portion 11 and contacts each other.
- the mask cover 12 is made of imide resin. Specifically, the mask cover 12 is made of polyamide-imide, for example. The mask cover 12 may be made of, for example, polyimide instead of polyamideimide.
- a first through hole 11c is formed in the main body portion 11 .
- the first through hole 11c penetrates the body portion 11 so as to reach from the first surface 11s1 to the second surface 11s2.
- the planar shape of the first through hole 11c is arbitrary, and may be, for example, circular or rectangular (particularly square) in plan view.
- the first through-hole 11c is a portion where a member constituting the body portion 11 is missing, and may have a columnar portion 11a and an inclined portion 11b.
- the entire inner wall of the columnar portion 11a extends in a direction substantially orthogonal to the first surface 11s1 and the second surface 11s2. That is, in the cross-sectional view of FIG. 2, two portions of the inner wall of the columnar portion 11a which are arranged at positions shifted from each other by 180° with respect to the center and which face each other extend in parallel with each other. Therefore, the inner wall at the left end and the inner wall at the right end of the columnar portion 11a in the sectional view of FIG. 2 are parallel to each other.
- the inclined portion 11b has an inner wall extending in a direction inclined with respect to a direction substantially orthogonal to the first surface 11s1 and the second surface 11s2. That is, in the sectional view of FIG. 2, both the inner wall at the left end and the inner wall at the right end of the inclined portion 11b extend in a direction different from that of the inner wall of the columnar portion 11a. Both the inner wall at the left end and the inner wall at the right end of the inclined portion 11b extend in a direction inclined with respect to the first surface 11s1 and the second surface 11s2.
- the inclined portion 11b is formed closer to the second surface 11s2 than the columnar portion 11a, and has an inner wall whose diameter gradually increases from the first surface 11s1 toward the second surface 11s2. is preferably slanted.
- the inclined portion 11b may be formed closer to the first surface 11s1 than the columnar portion 11a.
- the inner wall of the inclined portion 11b may be inclined such that the diameter thereof gradually decreases from the first surface 11s1 side toward the second surface 11s2 side.
- the inclined portion 11b may be formed only in the central portion in the direction connecting the first surface 11s1 and the second surface 11s2 without being in contact with either the first surface 11s1 or the second surface 11s2.
- a columnar portion 11a reaching the first surface 11s1 is formed on the first surface 11s1 side of the inclined portion 11b, and a columnar portion 11a reaching the first surface 11s1 is formed on the first surface 11s1 side of the inclined portion 11b.
- the inner wall of the columnar portion 11a and the inner wall of the inclined portion 11b are continuous at the boundary between the adjacent columnar portion 11a and the inclined portion 11b.
- the first through hole 11c has both the columnar portion 11a and the inclined portion 11b.
- the first through hole 11c may have only the columnar portion 11a, or may have only the inclined portion 11b.
- the diameter of the first through-hole 11c and the like is the diameter of the circle when the planar shape thereof is circular.
- the diameter is the length of one side of the square.
- a second through hole 12 a is formed in the mask cover 12 .
- the second through hole 12a penetrates the mask cover 12 so as to reach from the third surface 12s1 to the fourth surface 12s2.
- the second through hole 12a has an inner wall extending in a direction substantially perpendicular to the first surface 11s1 and the second surface 11s2.
- the inner wall of the second through hole 12a may extend in a direction inclined with respect to the direction substantially orthogonal to the third surface 12s1 and the fourth surface 12s2.
- the inclination angle of the inner wall of the second through hole 12a with respect to the direction orthogonal to the third surface 12s1 may be, for example, 10° or less with respect to the direction orthogonal to the third surface 12s1.
- the first through-hole 11c and the second through-hole 12a do not extend over the entire mask jig 1 in the depth direction of the paper surface of FIG. be done. That is, the dimensions of the first through hole 11c and the second through hole 12a in the depth direction of the paper surface of FIG. 2 are relatively short. Specifically, the dimensions in the depth direction of the paper surface of the first through hole 11c and the second through hole 12a in FIG. 2 are equal to the dimensions in the left-right direction in FIG. be.
- the base jig 21 is a member for setting the substrate 20 to be film-formed.
- the base jig 21 is a plate-like member having a rectangular planar shape.
- one main surface of the base jig 21 may be installed so as not to contact the first surface 11s1 (so as to have a gap with the first surface 11s1).
- a groove 22 is formed on the main surface of the base jig 21 facing the first surface 11s1.
- the groove portion 22 is formed in a portion of one main surface of the base jig 21 as a concave portion recessed in a direction orthogonal to the main surface.
- the substrate 20 is installed on the base jig 21 by fitting the substrate 20 into the groove 22 .
- a screw hole 13 is formed so as to pass through all of the mask cover 12, the main body part 11 and the base jig 21 which are laminated so as to be in contact with each other.
- the screwing holes 13 are formed so that the mask cover 12, the main body 11 and the base jig 21 all overlap in plan view.
- the mask cover 12 can be fixed to the main body 11 and the base jig 21 by screwing. Therefore, the mask cover 12 and the body portion 11 can be replaced independently.
- the replacement cost can be reduced compared to the structure in which the main body part 11 and the mask cover 12 are integrated.
- the diameter of the screwing hole 13 may be smaller than that of the mask cover 12 and the body portion 11 in the base jig 21, and may be the same size in the mask cover 12 and the body portion 11.
- the diameter of the screw hole 13 may be the same in the main body 11 and the base jig 21 and may be larger in the mask cover 12 than in the main body 11 .
- any material can be used for the main body 11 of the mask jig 1.
- copper which is a metal material with high heat dissipation, may be used. Thereby, the thermal influence on the base material 20 can be mitigated.
- metals such as stainless steel and steel, and ceramics such as carbon and alumina can be used as the main body 11 .
- the body portion 11 may have a thin film formed on the surface of, for example, copper.
- the thin film is preferably made of a material having a low affinity for the material to be deposited using the mask jig 1, for example. That is, for example, when the mask jig 1 is used for forming an aluminum film by a thermal spraying method, the surface of the main body portion 11 made of copper has a low affinity for aluminum (difficult to contact with aluminum; It is preferred that a thin film of tin, for example, a material that is difficult to resist is formed.
- the minimum angles ⁇ 1 and ⁇ 2 formed by the inner wall of the inclined portion 11b and the first surface 11s1 and the second surface 11s2 are 30° or more and 60° or less. is preferred. That is, angles ⁇ 1 and ⁇ 2 between the dashed line parallel to the first surface 11s1 and the inner wall of the inclined portion 11b shown in FIG. 2 are preferably 30° or more and 60° or less. Although the angle ⁇ 1 and the angle ⁇ 2 may be equal, they may be different.
- the inner wall may include a partially curved surface. Further, the inner wall may have constant inclination angles ⁇ 1 and ⁇ 2 over its entirety, but may include surfaces with locally different inclination angles ⁇ 1 and ⁇ 2.
- the mask cover 12 of the mask jig 1 preferably has a thickness T of 0.5 mm or more and 2.0 mm or less, which is the distance between the third surface 12s1 and the fourth surface 12s2.
- the base jig 21 is preferably made of a metal material with high heat dissipation. Specifically, the base jig 21 is preferably made of either a copper-based metal material or an aluminum-based metal material. It is preferable that the body portion 11 has a thickness of 1.5 mm or more and 3 mm or less, which is the distance between the first surface 11s1 and the second surface 11s2. In the mask jig 1 , it is preferable that the mask cover 12 is thinner than the main body 11 . However, the thickness of the body portion 11 and the thickness of the mask cover 12 may be equal to each other. Alternatively, the mask cover 12 may be thicker than the body portion 11 .
- the diameter of the second through hole 12a is greater than or equal to the diameter of the first through hole 11c. "Greater than or equal to” includes both equal and greater (many). That is, the diameter of the second through-hole 12a may be the same as the diameter of the first through-hole 11c, or may be larger than the diameter of the first through-hole 11c.
- the second central axis 12as passing through the center of the second through-hole 12a in plan view is the same as that of the first through-hole 11c in plan view. It may be on the same straight line as the first central axis 11as passing through the center of . That is, as shown in FIG.
- the second central axis 12as and the first central axis 11as may be coaxially overlapped.
- the first central axis 11as in FIG. 2 may be arranged at a position shifted to the right or left with respect to the second central axis 12as, and the two may serve as axes at different positions.
- the size relationship between the diameters of the first through-hole 11c and the second through-hole 12a will be described including possible modifications as follows.
- FIG. 3 is a schematic cross-sectional view showing an enlarged first example of the aspect of the area A surrounded by the dotted line in FIG.
- the first through hole of body portion 11 is formed only of columnar portion 11a and has a constant diameter throughout.
- the diameter of the second through-hole 12a of the mask cover 12 is constant over its entirety, like the columnar portion 11a.
- the diameter of the columnar portion 11a is equal to the diameter of the second through hole 12a.
- Such a configuration may be used.
- FIG. 4 is a schematic cross-sectional view showing an enlarged second example of the aspect of the area A surrounded by the dotted line in FIG.
- the first through-hole of body portion 11 is formed only of columnar portion 11a
- the second through-hole 12a of mask cover 12 is formed of columnar portion 11a.
- the diameter is constant throughout.
- the diameter of the second through hole 12a is larger than the diameter of the columnar portion 11a.
- the case where the diameters of the columnar portion 11a and the second through hole 12a are equal as shown in FIG. 3 is excluded. Such a configuration may be used.
- FIG. 5 is a schematic cross-sectional view showing an enlarged third example of the aspect of the area A surrounded by the dotted line in FIG.
- the first through hole of body portion 11 is formed only of inclined portion 11b.
- the inner wall of the inclined portion 11b is inclined with respect to the direction orthogonal to the first surface 11s1 and the second surface 11s2 so that the diameter of the inclined portion 11b gradually increases from the first surface 11s1 side toward the second surface 11s2 side. ing.
- the maximum diameter D1 which is the maximum value among the diameters of the inclined portion 11b in plan view, is formed on the second surface 11s2, and the minimum diameter D2, which is the minimum value among the diameters of the inclined portion 11b in plan view, is formed on the first surface 11s1.
- the diameter D3 of the second through hole 12a of the mask cover 12 is constant over its entirety, like the columnar portion 11a.
- the diameter D3 of the second through hole 12a is larger than the minimum diameter D2 of the inclined portion 11b and smaller than the maximum diameter D1 of the inclined portion 11b. Such a configuration may be used.
- FIG. 6 is a schematic cross-sectional view showing an enlarged fourth example of the aspect of the area A surrounded by the dotted line in FIG.
- the first through hole of the main body portion 11 is composed of only the inclined portion 11b, and from the first surface 11s1 side toward the second surface 11s2 side, The inner wall is slanted so that its diameter gradually increases.
- the diameter D3 of the second through hole 12a of the mask cover 12 is constant throughout.
- the diameter D3 of the second through hole 12a is larger than the minimum diameter D2 of the inclined portion 11b and equal to the maximum diameter D1 of the inclined portion 11b.
- Such a configuration may be used.
- FIG. 7 is a schematic cross-sectional view showing an enlarged fifth example of the aspect of the area A surrounded by the dotted line in FIG.
- the shapes of the first and second through holes 12a are the same as those in the third and fourth examples, and description thereof will not be repeated.
- the diameter D3 of the second through hole 12a is equal to the minimum diameter D2 of the inclined portion 11b and smaller than the maximum diameter D1 of the inclined portion 11b. Such a configuration may be used.
- the second through hole 12a of the mask cover 12 has only an inclined portion of which inner wall is inclined in the same way as the inclined portion 11b of the first through hole 11c (or, as will be described below, a portion thereof has an inclined portion). ), in the above, the diameter of the second through hole 12a is considered to be the minimum value.
- FIG. 8 is a schematic cross-sectional view collectively showing a further modification of the mask jig of FIG.
- the second through-hole 12a of the mask cover 12 may be formed to intersect (perpendicularly) at the end portion intersecting the fourth surface 12s2 as shown in FIG.
- the second through hole 12a may be formed round like a part of a spherical surface (curved surface) at the end portion intersecting the fourth surface 12s2. That is, in the cross-sectional view of FIG. 8, the portion where the second through hole 12a and the fourth surface 12s2 intersect may be a curved surface 12R having a curved shape (for example, an arc shape or a partial elliptical shape). The same applies to the end portion where the second through hole 12a and the third surface 12s1 intersect.
- the inclination angle of the inclined portion may be formed in two stages or more. That is, it may be formed so as to have two or more inclined portions with different inclination angles.
- the inner wall of the second through-hole 12a has two inclined portions 12a1 and 12a2 having different angles with respect to the third surface 12s1.
- the inner wall of the inclined portion 11b of the body portion 11 may also be formed so that the inclination angle thereof has two or more stages.
- a part of the inclined portion 11b in FIG. 8 has two inclined portions 11b1 and 11b2 having different angles with respect to the first surface 11s1.
- the end portion of the first through hole 11c that intersects at least one of the first surface 11s1 and the second surface 11s2 may be rounded like a curved surface (curved in the cross-sectional view of FIG. 8).
- a mask jig 1 according to the present disclosure is used in a thermal spraying method.
- the mask jig 1 has a body portion 11 and a mask cover 12 .
- the body portion 11 includes a first surface 11s1 and a second surface 11s2 located opposite to the first surface 11s1.
- the mask cover 12 is arranged on the second surface 11 s 2 side of the main body 11 so as to overlap the main body 11 .
- the mask cover 12 includes a third surface 12s1 and a fourth surface 12s2 located opposite to the third surface 12s1.
- the mask cover 12 is made of imide resin.
- the mask cover 12 made of imide-based resin, which is a highly heat-resistant resin material, it is difficult for the material of the film formed by thermal spraying to be formed. Therefore, if the powder 10 (see FIG. 1) of the material used for film formation is supplied from the mask cover 12 side, when the base material to be film-formed is arranged downstream of the powder from the mask jig 1, Film formation on the surface of the mask jig 1 on which no film should be formed is suppressed. Further, the mask cover 12 is arranged on the second surface 11s2 side of the main body 11 so as to overlap with the main body 11 (so as to cover the surface of the main body 11), and film formation on the surface of the main body 11 is suppressed. .
- the film formation conditions are prevented from changing from the conditions set at the beginning of the film formation.
- a film of stable quality can be efficiently formed on the surface of the base material, for example, compared to the case where the formed mask is subjected to surface treatment as post-treatment.
- the body portion 11 is formed with a first through hole 11c reaching from the first surface 11s1 to the second surface 11s2.
- the mask cover 12 is formed with a second through hole 12a reaching from the third surface 12s1 to the fourth surface 12s2.
- the diameter of the second through hole 12a is greater than or equal to the diameter of the first through hole 11c.
- the diameter of the second through hole 12a may be larger than the diameter of the first through hole 11c.
- a region where a film is formed on the surface of the base material is defined by the first through holes 11c formed in the body portion 11 adjacent to the base material. This is because the film is formed in the region overlapping the region where the first through hole 11c is formed.
- the diameter of the second through-hole 12a is equal to or larger than the diameter of the first through-hole 11c (larger than the diameter)
- the region where the film is formed inside the first through-hole 11c of the main body 11 becomes the mask cover 12. Covering with areas other than the through-holes and obstructing film formation is suppressed.
- the through holes formed in the mask jig 1 allow the mask jig 1 to maintain its function as a mask.
- the diameter of the second through-hole 12a is made larger than the diameter of the first through-hole 11c, the following effects can be obtained.
- the regions of the mask cover 12 adjacent to the second through-holes 12a may be deformed by heat during use, and the shape of the second through-holes 12a may be distorted.
- the diameter of the second through-hole 12a is made larger than the diameter of the first through-hole 11c, the region where the film is formed inside the first through-hole 11c of the main body 11 will be the mask cover 12. Do not overlap with areas other than through-holes.
- the large size of the second through hole 12a creates a margin for the mask cover 12 not to partially block the inside of the first through hole 11c even if the mask cover 12 is deformed. Therefore, the function of the mask jig 1 including the mask cover 12 as a mask can be maintained.
- the body portion 11 is formed with a first through hole 11c reaching from the first surface 11s1 to the second surface 11s2.
- the mask cover 12 is formed with a second through hole 12a reaching from the third surface 12s1 to the fourth surface 12s2.
- the inner wall of the first through hole 11c extends in a direction that is inclined with respect to the direction perpendicular to the first surface 11s1 and the second surface 11s2.
- the diameter D3 of the second through-hole 12a is equal to or larger than the minimum diameter D2 of the first through-hole 11c and equal to or smaller than the maximum diameter D1 of the first through-hole 11c. Such a configuration may be used.
- a region of the surface of the base material where the film is formed is defined by the minimum diameter D2 of the first through-hole 11c formed in the body portion 11 adjacent to the base material. This is because the film is formed in a region overlapping with the inside of the minimum diameter D2 of the first through hole 11c.
- the minimum diameter D3 of the second through hole 12a is the same as the minimum diameter D2 of the first through hole 11c. Therefore, it is suppressed that the area where the film is formed inside the first through hole 11c of the main body part 11 and the area of the mask cover 12 other than the second through hole 12a overlap with each other.
- the mask cover 12 blocking a part of the first through-hole 11c prevents film formation in the blocked portion. can. That is, the through holes formed in the mask jig 1 allow the mask jig 1 to maintain its function as a mask.
- the powder 10 (see FIG. 1) passing through the second through-hole 12a of the mask cover 12 may try to adhere to the inner wall of the second through-hole 12a.
- the inner wall of the first through hole 11c has an inclined portion 11b. Therefore, the powder 10 (see FIG. 1) passing through the second through-hole 12a of the mask cover 12 does not incline to the inner wall of the first through-hole 11c compared to the case where the inner wall is not inclined with respect to the direction perpendicular to the first surface 11s1. can reduce the collision energy when colliding with Therefore, film formation on the edge of the through-hole of the mask jig 1, that is, on the inner wall can be suppressed.
- the minimum angle between the inner wall of the first through hole 11c and the first surface 11s1 and the second surface 11s2 may be 30° or more and 60° or less.
- the thickness of the mask cover 12 may be 0.5 mm or more and 2.0 mm or less from the viewpoint of enhancing the above effects.
- FIG. 9 is a flow chart showing a film forming method according to this embodiment.
- the film forming method according to the present embodiment is a film forming method performed using mask jig 1 and film forming apparatus 100 shown in FIGS. (S10), a film formation step (S20), and a post-treatment step (S30).
- the preparation step (S10) includes a step of arranging the mask jig 1 so as to face the surface of the base material 20 as shown in FIG.
- the mask jig 1 is arranged such that the first surface 11s1 (see FIGS. 2 to 7) of the mask jig 1 faces the surface of the base material 20.
- the body portion 11 of the mask jig 1 is preferably made of a material having a low affinity for the material of the powder sprayed in the next film forming step (S20).
- the film-forming raw material is powdered by the cold spray method using the film-forming apparatus 100 through the first through-hole 11c and the second through-hole 12a (see FIG. 2) of the mask jig 1. is sprayed onto the surface of the substrate 20. As a result, a film made of the film-forming raw material is formed on the surface of the substrate 20 .
- the mask jig 1 is removed from the surface of the base material 20. Thereafter, necessary processing such as processing of the base material 20 is performed. In this manner, a film can be formed on the surface of the substrate 20 .
- the amount of the film forming raw material adhering to the mask jig 1 can be reduced. can be lengthened.
- the number of times the mask jig 1 can be used repeatedly can be increased.
- a mask jig which does not have a mask cover 12 and consists only of the main body portion 11 is arranged so as to face the surface of the substrate 20 as shown in FIGS.
- the first through-hole 11c of the body portion 11 used is composed only of the inclined portion 11b, and the angles ⁇ 1 and ⁇ 2 (see FIG. 2) formed between the first surface 11s1 and the first surface 11s1 are 45°.
- Samples of mask jigs composed of only the main body 11 and made of different materials were prepared. Specifically, a sample 1 made of stainless steel SUS304, a sample 2 made of carbon steel, and a sample 3 made of copper were prepared.
- Each sample had a quadrangular planar shape and a size of 42 mm wide ⁇ 30 mm long ⁇ 3 mm thick.
- the inclined portion 11b has a maximum diameter of 6 mm and a minimum diameter of 2 mm.
- the first through holes 11c are formed in a matrix, two spaced apart in the vertical direction (short side direction) in a plan view, and three spaced apart in the horizontal direction (long side direction) perpendicular thereto. was done.
- a film was formed on the substrate surface by the cold spray method.
- a powder made of aluminum was used as a film-forming raw material.
- the aluminum powder had a spherical shape and a diameter of 10 ⁇ m.
- the material of the base material 20 was alumina (Al2O3).
- the shape of the base material 20 was a plate shape with a square planar shape.
- the size of the substrate was 42 mm wide ⁇ 30 mm long ⁇ 3 mm thick.
- the film formation conditions were as follows: dry air was used as the working gas, the temperature of the working gas was 270°C, the flow rate of the working gas was 400 liters/minute, and the pressure of the working gas was about 0.7 MPa.
- the width (nozzle width) of the region where the film-forming material is sprayed from the film-forming apparatus to the surface of the mask jig was set to 5 mm.
- the speed (sweep speed) for moving the region where the film-forming material is sprayed so as to include the region in which the through holes are formed on the surface of the mask jig was set to 5 mm/sec.
- the size of the film formation range (region where the film formation material is sprayed) on the surface of the mask jig was 5 mm wide ⁇ 30 mm long.
- the film-forming raw material was injected into the film-forming range five times to form a film on the substrate surface.
- the adhesion amount of the film-forming raw material could be reduced compared to other materials.
- using a material with a high thermal conductivity for the main body 11 (mask jig) could reduce the deposition amount of the film-forming raw material compared to using a material with a low thermal conductivity.
- the material of the main body 11 was copper, and a thin film of a material having a low affinity for the film formation raw material was formed (surface treatment) on its surface, and then the same measurements as above were performed.
- Sample 4 was prepared by plating a thin film of tin, which has a low affinity for aluminum, which is a film forming material, on the surface of the same sample as Sample 3 .
- a sample 5 was prepared in which a chromium thin film was formed on the surface of the same sample as the sample 3 by plating. Table 2 below compares the results of Sample 3 in Table 1 with the measurement results of Samples 4 and 5.
- a mask jig sample having only a main body 11 and having no mask cover as in Example 1 and a mask jig 1 sample having a main body 11 and a mask cover 12 as in the present embodiment were used.
- the deposition amount of the film forming material on the columnar portion formed in the main body portion of the mask jig was compared.
- the body portion 11 is formed of stainless steel SUS304 in the same manner as the sample 1 of Example 1, but the first through hole 11c is composed only of the columnar portion 11a, and has a form similar to that of FIGS. 3 and 4.
- a sample 6 consisting of only was prepared.
- a sample 10 having a body portion 11 similar to that of the sample 6 and a mask cover 12 provided thereon was also prepared.
- the mask cover 12 prepared for constructing the mask jig 1 of the sample 10 was made of polyamide-imide.
- the mask cover 12 has a second through hole 12a extending in a direction perpendicular to the third surface 12s1 (see FIG. 2).
- the thickness of the mask cover 12 was 1.5 mm, and the diameter of the second through hole 12a was 5 mm.
- a second through-hole 12a was formed at a position of the mask cover 12 overlapping the first through-hole 11c in plan view.
- ⁇ Deposition process> Using Samples 6 and 10 described above, a film was formed on the substrate surface by the cold spray method. A powder made of aluminum was used as a film-forming raw material. The aluminum powder had a spherical shape and a diameter of 10 ⁇ m. The material of the base material 20 was stainless steel (SUS304). The shape and size of the substrate 20 were the same as in Example 1.
- the film formation conditions were as follows: dry air was used as the working gas, the temperature of the working gas was 270°C, the flow rate of the working gas was 400 liters/minute, and the pressure of the working gas was about 0.7 MPa.
- the nozzle width was 5 mm.
- the sweep speed was 10 mm/sec.
- the size of the film formation range was 5 mm wide ⁇ 30 mm long. In each sample, a region was formed in which the film-forming raw material was injected only once in the film-forming range.
- the lamination amount of the sample 10 having the polyamide-imide mask cover 12 is given as a negative value, which indicates that there was no deposition of the film-forming raw material. From Table 3, if the material of the main body 11 is stainless steel SUS304, the adhesion of the film forming raw material to the mask jig 1 can be suppressed by covering it with the mask cover 12 formed of a heat-resistant imide resin. .
- FIG. 10 is a schematic cross-sectional view showing a first example of a mask jig used in Example 3.
- FIG. 11 is a schematic cross-sectional view showing a second example of a mask jig used in Example 3.
- FIG. FIG. 12 is a schematic cross-sectional view showing a third example of a mask jig used in Example 3.
- FIG. 10 to 12 a sample 11 of the mask jig 1 having the configuration shown in FIG. 10, a sample 12 of the mask jig 1 having the configuration shown in FIG. 11, and a mask jig 1 having the configuration shown in FIG. and sample 13 were prepared.
- the sample 11 in FIG. 10, the sample 12 in FIG. 11, and the sample 13 in FIG. 12 all have roughly the same aspect as the mask jig 1 in FIG. That is, the first through hole 11c of the body portion 11 has both a columnar portion 11a and an inclined portion 11b, and the second through hole 12a of the mask cover 12 is formed on the first surface 11s1 (see FIG. 2). It extends in the orthogonal direction.
- the diameter of the columnar portion 11a was set to 2 mm, and the maximum diameter of the inclined portion 11b was set to 6 mm.
- the thickness of the mask cover 12 was set to 1.5 mm.
- the main body 11 is made of copper
- the mask cover 12 is made of polyamide-imide.
- a sample 11 of FIG. 10, a sample 12 of FIG. 11, and a sample 13 of FIG. 12 were prepared as samples of the mask jig 1 with different diameters of the second through holes 12a.
- the diameter of the second through-hole 12a was the largest, and the diameter was sufficiently larger than the maximum diameter of the inclined portion 11b.
- the diameter of the second through-hole 12a was slightly smaller than the maximum diameter of the inclined portion 11b, but sufficiently larger than the minimum diameter of the inclined portion 11b.
- the diameter of the second through-hole 12a of the sample 12 of FIG. 11 was set to 5 mm.
- the diameter of the second through-hole 12a was approximately the same as the minimum diameter of the inclined portion 11b. Specifically, the diameter of the second through-hole 12a of the sample 13 of FIG. 12 was set to 2 mm. 11 is similar to FIG. 5 or 6, and FIG. 12 is similar to FIG. FIG. 10 does not resemble any of FIGS. 3-7.
- ⁇ Deposition process> Using Samples 11 to 13 described above, a film was formed on the substrate surface by the cold spray method. A powder made of aluminum was used as a film-forming raw material. The aluminum powder had a spherical shape and a diameter of 10 ⁇ m. The material of the base material 20 was stainless steel (SUS304). The shape and size of the substrate 20 were the same as in Example 1.
- the film formation conditions were as follows: dry air was used as the working gas, the temperature of the working gas was 270°C, the flow rate of the working gas was 400 liters/minute, and the pressure of the working gas was about 0.7 MPa.
- the nozzle width was 5 mm.
- the sweep speed was 5 mm/sec.
- the size of the film formation range was 5 mm wide ⁇ 30 mm long. In each sample, a region was formed in which the film-forming raw material was injected only once in the film-forming range.
- the weight of the film forming raw material adhering to the surface on the inner wall of the inclined portion 11b of the main body portion 11 of each of the samples 11 to 13 was measured and observed.
- FIG. 13 is a photograph of the attachment state of the film-forming raw material on the inner wall of the inclined portion formed in the body portion of the sample 11 of Example 3, viewed from above.
- FIG. 14 is a photograph of the attachment state of the film-forming raw material on the inner wall of the inclined portion formed in the main body portion of the sample 12 of Example 3, viewed from above.
- FIG. 15 is a photograph of the depositing state of the film-forming raw material on the inner wall of the inclined portion formed in the body portion of the sample 13 of Example 3, viewed from above. 13 to 15, the adhered amount of sample 11 was 80 mg. In contrast, samples 12 and 13 did not adhere. As a result, it was shown that the adhesion amount of the film forming raw material was reduced in the mask jig according to the present disclosure (in particular, the one having through holes with dimensions as shown in FIGS. 5 and 7).
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Abstract
Description
図1は、本実施の形態に係る成膜装置の構成を示す模式図である。図1を参照して、成膜装置100は、ノズル2bを含むスプレーガン2と、粉末供給部3と、ガス供給部4と、マスク治具1とを主に備える。
図1に示した成膜装置100では、矢印30に示すようにガス供給部4から配管6を介して動作ガスがスプレーガン2に供給される。動作ガスとしては、たとえば窒素、ヘリウム、ドライエアまたはそれらの混合物を用いることができる。動作ガスの圧力はたとえば1MPa程度である。動作ガスの流量はたとえば300L/分以上500L/分以下である。スプレーガン本体部2aの第2端に供給された動作ガスは、ヒータ2cによって加熱される。動作ガスの加熱温度は、成膜原料の組成に応じて適宜設定されるが、たとえば100℃以上500℃以下とすることができる。スプレーガン本体部2aからノズル2bに動作ガスは流れる。ノズル2bには、配管5を介して粉末供給部3から矢印32に示すように成膜原料となる粉末10が供給される。粉末10としては、たとえばニッケル粉末、錫粉末、または錫粉末と亜鉛粉末との混合材料を用いることができる。あるいは粉末として、たとえばアルミニウムの粉末が用いられてもよい。粉末10の粒径は、たとえば1μm以上50μm以下である。
図2は、本実施の形態に係るマスク治具、およびこれが設置される基材およびベース治具を示す概略断面図である。図2を参照して、マスク治具1は、溶射法の一例であるコールドスプレー法において用いられる。マスク治具1は、本体部11と、マスクカバー12とを備える。
図8は、図2のマスク治具のさらなる変形例を総括して示す概略断面図である。マスクカバー12の第2貫通孔12aは、図2のように第4面12s2と交差する端部にて交差(直交)するように形成されてもよい。しかし図8を参照して、第2貫通孔12aは第4面12s2と交差する端部にてたとえば球面の一部(曲面)のように丸く形成されてもよい。つまり図8の断面図において、第2貫通孔12aと第4面12s2とが交差する部分が曲線状(たとえば円弧状または楕円の一部の形状)を有する曲面12Rとされてもよい。第2貫通孔12aと第3面12s1とが交差する端部についても同様である。
本開示に係るマスク治具1は、溶射法において用いられる。マスク治具1は、本体部11と、マスクカバー12とを備える。本体部11は、第1面11s1と、第1面11s1とは反対側に位置する第2面11s2とを含む。マスクカバー12は、本体部11の第2面11s2側に、本体部11と重なるように配置される。マスクカバー12は、第3面12s1と、第3面12s1とは反対側に位置する第4面12s2とを含む。マスクカバー12はイミド系樹脂により形成される。
図9は、本実施の形態に係る成膜方法を示すフローチャートである。図9を参照して、本実施の形態に係る成膜方法は、図1~図7に示したマスク治具1および成膜装置100を用いて実施される成膜方法であって、準備工程(S10)と、成膜工程(S20)と、後処理工程(S30)とを主に備える。
マスクカバー12を有さず、本体部11のみからなるマスク治具を、図1および図2のように基材20の表面に対向するように配置し、図1の成膜装置100で成膜したときに、本体部11の表面における成膜原料の付着量が調査された。なお用いられた本体部11の第1貫通孔11cは傾斜部11bのみからなり、第1面11s1との間でなす角度θ1、θ2(図2参照)は45°とした。このような本体部11のみからなり、材質が異なるマスク治具の試料を準備した。具体的には、ステンレス鋼SUS304で形成された試料1、炭素鋼で形成された試料2、および銅で形成された試料3を準備した。各試料の平面形状は四角形状であり、そのサイズは、横42mm×縦30mm×厚さ3mmとした。傾斜部11bの最大径は6mm、最小径は2mmとされた。第1貫通孔11cは、平面視における縦方向(短辺方向)に互いに間隔をあけて2つ、これに直交する横方向(長辺方向)に互いに間隔をあけて3つ、行列状に形成された。
上述した試料1~試料3を用いて、コールドスプレー法により基材表面に膜を形成した。成膜原料としてはアルミニウムからなる粉末を用いた。当該アルミニウム粉末の形状は球状であり、直径は10μmとした。基材20の材料はアルミナ(Al2O3)とした。基材20の形状は平面形状が四角形状の板状とした。基材のサイズは、横42mm×縦30mm×厚さ3mmとした。
実施例1と同様に本体部11のみからなりマスクカバーを有さないマスク治具の試料と、本実施の形態と同様に本体部11およびマスクカバー12を備えるマスク治具1の試料とを用いて、図1の成膜装置100で成膜したときに、マスク治具の本体部に形成された柱状部への成膜原料の付着量が比較された。具体的には、実施例1の試料1と同様にステンレス鋼SUS304で形成されるが、第1貫通孔11cが柱状部11aのみからなる、図3および図4と同様の態様を有する本体部11のみからなる試料6が準備された。また当該試料6と同様の本体部11とその上に設けられたマスクカバー12とを備える試料10とが準備された。試料10のマスク治具1を構成すべく準備されたマスクカバー12は、ポリアミドイミドにより形成された。マスクカバー12は、第3面12s1(図2参照)に直交する方向に延びる第2貫通孔12aを有するものとした。マスクカバー12は、その厚みが1.5mm、第2貫通孔12aの径は5mmとされた。平面視にて第1貫通孔11cと重なるマスクカバー12の位置に、第2貫通孔12aが形成された。
上述した試料6および試料10を用いて、コールドスプレー法により基材表面に膜を形成した。成膜原料としてはアルミニウムからなる粉末を用いた。当該アルミニウム粉末の形状は球状であり、直径は10μmとした。基材20の材料はステンレス鋼(SUS304)とした。基材20の形状およびサイズは実施例1と同様とした。
図10は、実施例3において用いられたマスク治具の態様の第1例を示す概略断面図である。図11は、実施例3において用いられたマスク治具の態様の第2例を示す概略断面図である。図12は、実施例3において用いられたマスク治具の態様の第3例を示す概略断面図である。図10~図12を参照して、図10に示す構成のマスク治具1の試料11と、図11に示す構成のマスク治具1の試料12と、図12に示す構成のマスク治具1の試料13とを準備した。
上述した試料11~試料13を用いて、コールドスプレー法により基材表面に膜を形成した。成膜原料としてはアルミニウムからなる粉末を用いた。当該アルミニウム粉末の形状は球状であり、直径は10μmとした。基材20の材料はステンレス鋼(SUS304)とした。基材20の形状およびサイズは実施例1と同様とした。
各試料の傾斜部11bの内壁における付着量:
図13は、実施例3の試料11の本体部に形成された傾斜部の内壁における成膜原料の付着態様を上方から見た写真である。図14は、実施例3の試料12の本体部に形成された傾斜部の内壁における成膜原料の付着態様を上方から見た写真である。図15は、実施例3の試料13の本体部に形成された傾斜部の内壁における成膜原料の付着態様を上方から見た写真である。図13~図15を参照して、試料11の付着量は80mgであった。これに対して、試料12および試料13には付着しなかった。この結果、本開示に係るマスク治具(特に図5および図7のような寸法の貫通孔を有するもの)において成膜原料の付着量が低減されることが示された。
Claims (8)
- 溶射法において用いるマスク治具であって、
第1面と、前記第1面とは反対側に位置する第2面とを含む本体部と、
前記本体部の前記第2面側に、前記本体部と重なるように配置され、第3面と、前記第3面とは反対側に位置する第4面とを含むマスクカバーとを備え、
前記マスクカバーはイミド系樹脂により形成される、マスク治具。 - 前記本体部には、前記第1面から前記第2面にまで到達する第1貫通孔が形成され、
前記マスクカバーには、前記第3面から前記第4面にまで到達する第2貫通孔が形成され、
前記第2貫通孔の径は前記第1貫通孔の径以上の大きさである、請求項1に記載のマスク治具。 - 前記第2貫通孔の径は前記第1貫通孔の径よりも大きい、請求項2に記載のマスク治具。
- 前記本体部には、前記第1面から前記第2面にまで到達する第1貫通孔が形成され、
前記マスクカバーには、前記第3面から前記第4面にまで到達する第2貫通孔が形成され、
前記第1貫通孔の内壁は、前記第1面および前記第2面に直交する方向に対して傾斜する方向に延び、
前記第2貫通孔の径は、前記第1貫通孔の最小径以上であり、前記第1貫通孔の最大径以下である、請求項1に記載のマスク治具。 - 前記内壁と、前記第1面および前記第2面とのなす最小角度は30°以上60°以下である、請求項4に記載のマスク治具。
- 前記マスクカバーの厚みは0.5mm以上2.0mm以下である、請求項1~5のいずれか1項に記載のマスク治具。
- 基材の表面に対向するように、請求項1に記載のマスク治具を配置する工程を備え、
前記配置する工程では、前記マスク治具の前記第1面が前記基材の前記表面に面するように、前記マスク治具が配置され、さらに、
前記マスク治具の第1貫通孔および第2貫通孔を介して、コールドスプレー法により成膜原料となる粉末を前記基材の前記表面に吹き付ける工程を備える、成膜方法。 - ノズルを含むスプレーガンと、
前記スプレーガンに成膜原料となる粉末を供給する粉末供給部と、
前記スプレーガンに動作ガスを供給するガス供給部と、
基材とスプレーガンとの間に配置される、請求項1に記載のマスク治具とを備える、成膜装置。
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JP2009001873A (ja) * | 2007-06-22 | 2009-01-08 | Toyota Motor Corp | 伝熱部材の製造方法、パワーモジュール、車両用インバータ、及び車両 |
WO2017057621A1 (ja) * | 2015-09-30 | 2017-04-06 | 大日本印刷株式会社 | 蒸着マスク、蒸着マスクの製造方法および金属板 |
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JP2007234248A (ja) * | 2006-02-27 | 2007-09-13 | Kyocera Corp | 蒸着マスク、及びそれを用いた有機elディスプレイの製造方法 |
JP2009001873A (ja) * | 2007-06-22 | 2009-01-08 | Toyota Motor Corp | 伝熱部材の製造方法、パワーモジュール、車両用インバータ、及び車両 |
WO2017057621A1 (ja) * | 2015-09-30 | 2017-04-06 | 大日本印刷株式会社 | 蒸着マスク、蒸着マスクの製造方法および金属板 |
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