WO2015037546A1 - バッキングプレート付きスパッタリングターゲットの反り矯正方法 - Google Patents
バッキングプレート付きスパッタリングターゲットの反り矯正方法 Download PDFInfo
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- WO2015037546A1 WO2015037546A1 PCT/JP2014/073587 JP2014073587W WO2015037546A1 WO 2015037546 A1 WO2015037546 A1 WO 2015037546A1 JP 2014073587 W JP2014073587 W JP 2014073587W WO 2015037546 A1 WO2015037546 A1 WO 2015037546A1
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- backing plate
- sputtering target
- target
- warpage
- correcting
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- 238000005477 sputtering target Methods 0.000 title claims abstract description 131
- 238000000034 method Methods 0.000 title claims abstract description 51
- 238000012937 correction Methods 0.000 title claims abstract description 22
- 125000006850 spacer group Chemical group 0.000 claims abstract description 47
- 238000003825 pressing Methods 0.000 claims abstract description 43
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 12
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 10
- 150000004706 metal oxides Chemical class 0.000 claims abstract description 10
- 239000002184 metal Substances 0.000 claims abstract description 9
- 229910052751 metal Inorganic materials 0.000 claims abstract description 9
- 239000011159 matrix material Substances 0.000 claims abstract description 8
- 239000002131 composite material Substances 0.000 claims abstract description 7
- 229910052738 indium Inorganic materials 0.000 claims description 49
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 claims description 49
- 229920002379 silicone rubber Polymers 0.000 claims description 28
- 239000000463 material Substances 0.000 claims description 27
- 230000001965 increasing effect Effects 0.000 claims description 24
- 229910052802 copper Inorganic materials 0.000 claims description 21
- 239000010949 copper Substances 0.000 claims description 21
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 20
- 229910045601 alloy Inorganic materials 0.000 claims description 15
- 239000000956 alloy Substances 0.000 claims description 15
- 238000005219 brazing Methods 0.000 claims description 10
- 238000005304 joining Methods 0.000 claims description 9
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 3
- 230000000052 comparative effect Effects 0.000 description 30
- 230000006835 compression Effects 0.000 description 25
- 238000007906 compression Methods 0.000 description 25
- 238000004544 sputter deposition Methods 0.000 description 19
- 238000005259 measurement Methods 0.000 description 13
- 230000000694 effects Effects 0.000 description 12
- 238000002474 experimental method Methods 0.000 description 12
- 230000007423 decrease Effects 0.000 description 11
- 238000002844 melting Methods 0.000 description 10
- 230000008018 melting Effects 0.000 description 10
- 238000001816 cooling Methods 0.000 description 9
- 239000004033 plastic Substances 0.000 description 8
- 229910010413 TiO 2 Inorganic materials 0.000 description 7
- 229910004298 SiO 2 Inorganic materials 0.000 description 6
- 239000000203 mixture Substances 0.000 description 4
- 229910020599 Co 3 O 4 Inorganic materials 0.000 description 3
- IVMYJDGYRUAWML-UHFFFAOYSA-N cobalt(II) oxide Inorganic materials [Co]=O IVMYJDGYRUAWML-UHFFFAOYSA-N 0.000 description 3
- 230000014759 maintenance of location Effects 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- 229910019222 CoCrPt Inorganic materials 0.000 description 2
- 229910001128 Sn alloy Inorganic materials 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 229910001316 Ag alloy Inorganic materials 0.000 description 1
- 229910000684 Cobalt-chrome Inorganic materials 0.000 description 1
- 229910005335 FePt Inorganic materials 0.000 description 1
- -1 SiO 2 Chemical class 0.000 description 1
- 229910020816 Sn Pb Inorganic materials 0.000 description 1
- 229910020836 Sn-Ag Inorganic materials 0.000 description 1
- 229910020922 Sn-Pb Inorganic materials 0.000 description 1
- 229910020935 Sn-Sb Inorganic materials 0.000 description 1
- 229910020994 Sn-Zn Inorganic materials 0.000 description 1
- 229910020988 Sn—Ag Inorganic materials 0.000 description 1
- 229910018956 Sn—In Inorganic materials 0.000 description 1
- 229910008783 Sn—Pb Inorganic materials 0.000 description 1
- 229910008757 Sn—Sb Inorganic materials 0.000 description 1
- 229910009069 Sn—Zn Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910001315 Tool steel Inorganic materials 0.000 description 1
- 229910002056 binary alloy Inorganic materials 0.000 description 1
- 239000010952 cobalt-chrome Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/32—Gas-filled discharge tubes
- H01J37/34—Gas-filled discharge tubes operating with cathodic sputtering
- H01J37/3411—Constructional aspects of the reactor
- H01J37/3414—Targets
- H01J37/3423—Shape
-
- 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
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
- C23C14/0605—Carbon
-
- 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
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
- C23C14/08—Oxides
-
- 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
- C23C14/34—Sputtering
- C23C14/3407—Cathode assembly for sputtering apparatus, e.g. Target
- C23C14/3414—Metallurgical or chemical aspects of target preparation, e.g. casting, powder metallurgy
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/32—Gas-filled discharge tubes
- H01J37/34—Gas-filled discharge tubes operating with cathodic sputtering
- H01J37/3411—Constructional aspects of the reactor
- H01J37/3414—Targets
- H01J37/3426—Material
- H01J37/3429—Plural materials
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/32—Gas-filled discharge tubes
- H01J37/34—Gas-filled discharge tubes operating with cathodic sputtering
- H01J37/3411—Constructional aspects of the reactor
- H01J37/3435—Target holders (includes backing plates and endblocks)
Definitions
- the present invention relates to a warp correction method for a sputtering target with a backing plate (hereinafter, sometimes simply referred to as “warp correction method”), and more specifically, a sputtering target with a backing plate in which warpage has occurred (hereinafter referred to as “target with BP”). It is related with the warp correction method which can correct
- a sputtering target (hereinafter, simply referred to as “target”) may be attached to a sputtering apparatus with a backing plate attached for cooling the target during attachment to the sputtering apparatus and sputtering. is there.
- the sputtering target and the backing plate are heated to a temperature at which indium melts (for example, about 250 to 300 ° C.) and melted between the sputtering target and the backing plate.
- indium is interposed and cooled to room temperature to solidify the indium to join the sputtering target and the backing plate.
- the target with BP in which warpage has occurred becomes difficult to properly attach to the sputtering apparatus, and cooling during sputtering may not be performed properly.
- the present invention has been made in view of such problems, and an object of the present invention is to provide a warp correction method capable of correcting the warpage of a sputtering target with a backing plate in which warpage has occurred by a simple method.
- the present inventor has found that the above problems can be solved by the following method for correcting the warpage of the sputtering target with a backing plate, and has led to the present invention.
- the method for correcting warpage of a sputtering target with a backing plate comprises joining the sputtering target and the backing plate with a brazing material, wherein the sputtering target side is convex and the backing plate side is warped.
- a method for correcting warpage of a sputtering target with a backing plate to reduce warpage of the sputtering target with a backing plate comprising an upper pressure surface and a lower pressure surface so as to face each other in the vertical direction, and the lower pressure surface
- the sputtering target with a backing plate is arranged on the lower pressing surface of the pressurizing device capable of pressurizing an object to be pressed arranged in the vertical direction so that the sputtering target side is located on the upper side.
- An arrangement step of arranging a spacer between an outer edge portion of the sputtering target with a backing plate on the side of the backing plate and the lower pressure surface of the pressure device, and after the arrangement step, the sputtering target with a backing plate is A pressurizing step of pressurizing in the vertical direction by the pressurizing device, wherein the sputtering target is a composite in which at least one of a metal oxide and carbon is dispersed in a matrix metal. This is a method for correcting warpage of a sputtering target with a backing plate.
- the jig when pressurizing the sputtering target with the backing plate, the jig also constitutes a part of the pressurizing apparatus. Therefore, in the case of using a jig, the “upper pressure surface” of the pressure device is the upper pressure surface of the jig to be used, and the “lower pressure surface” of the pressure device is This is the pressure surface on the lower side of the jig to be used.
- the warp correction method can be suitably used.
- Oxygen-free copper or copper alloy can be used for the backing plate.
- the pressure applied to the sputtering target with a backing plate may be increased in one step up to a target pressure.
- the warpage correction method can make the amount of warpage on the backing plate side less than 0.1 mm.
- the thickness of the spacer is preferably 0.05 to 0.5 mm.
- Indium can be preferably used as the brazing material.
- an Sn-based alloy can be used as the brazing material.
- the Sn-based alloy is an alloy containing Sn, and is a concept including not only a binary system but also a ternary or higher Sn alloy.
- a cushioning material is further arranged between an outer surface of the sputtering target with the backing plate on the sputtering target side and the upper pressure surface.
- the buffer material for example, silicon rubber can be used, and the silicon rubber preferably has a thickness of 0.5 to 1.5 mm.
- the method of correcting the warpage of the sputtering target with a backing plate according to the present invention can be carried out in a room temperature atmosphere.
- the method for correcting warpage of a sputtering target with a backing plate according to the present invention can be executed so as not to plastically deform the sputtering target and the backing plate.
- the warpage of the sputtering target with a backing plate in which warpage has occurred can be corrected by a simple method, and the production efficiency of the sputtering target with a backing plate can be improved.
- FIG. 1 A side view schematically showing warped target with BP
- FIG. 1 A side view schematically showing a state in which a warped BP-attached target is set in a pressurizing apparatus when performing the warp correction method of the present embodiment.
- the side view which shows typically the case where the upper and lower sides of the target 10 with BP are pressurized via the silicon rubber 20 without using the spacer 18.
- Bar graph showing relationship between press pressure and warpage amount in Example 1 and Comparative Example 1
- FIG. 1 is a side view schematically showing a sputtering target with a backing plate (hereinafter, sometimes referred to as “target with BP”) to be warped using the warp correction method according to the present embodiment. .
- target with BP a sputtering target with a backing plate
- the sputtering target with a backing plate 10 (hereinafter sometimes referred to as “target with BP 10”) includes a sputtering target 12, a backing plate 14, and indium 16, and includes a sputtering target 12 and a backing plate 14.
- a backing plate 14 is attached to the sputtering target 12 by indium 16 interposed therebetween.
- the sputtering target 12 is a composite in which a metal oxide such as SiO 2 , TiO 2 , Co 3 O 4 , and CoO or carbon is dispersed in a matrix metal, whereas the backing plate 14 is made of oxygen-free copper or a copper alloy. is there. For this reason, the thermal expansion coefficient of the backing plate 14 is larger than the thermal expansion coefficient of the sputtering target 12.
- the sputtering target 12 and the backing plate 14 are heated to a temperature at which the indium 16 melts (for example, about 250 to 300 ° C.).
- the molten indium 16 is interposed therebetween, and in this state, the indium 16 is cooled to room temperature to solidify the indium 16, and the backing plate 14 is attached to the sputtering target 12.
- the thermal expansion coefficient of the backing plate 14 is larger than the thermal expansion coefficient of the sputtering target 12, the cooling of the indium 16 from the temperature at which the indium 16 melts (for example, about 250 to 300 ° C.) to room temperature is higher than the sputtering target 12.
- the backing plate 14 has a larger contraction amount. For this reason, when the backing plate 14 is attached to the sputtering target 12 and cooled to room temperature, as shown in FIG. 1, the sputtering target 12 side becomes convex and the backing plate 14 side becomes concave.
- the warpage amount on the sputtering target 12 side is the TG warpage amount a
- the warpage amount on the backing plate 14 side is the BP warpage amount b
- TG is an abbreviation for target
- BP is an abbreviation for backing plate.
- the measured value of the BP warpage amount b is the warpage amount of the target with BP.
- FIG. 2 is a side view schematically showing a state in which the warped BP-attached target 10 is set in a pressurizing device.
- the compression jig used for pressurization constitutes a part of the pressurizer.
- the warp of the BP-target 10 is corrected using the warp correction method according to the present embodiment, first, as shown in FIG. 2, the outer edge portion 14A on the backing plate 14 side of the BP-target 10 and the pressure are applied.
- the spacer 18 is disposed between the lower pressing surface 22A of the compression jig 22 attached to the apparatus.
- the silicon rubber 20 is disposed between the outer surface of the sputtering target 12 side of the target 10 with BP and the upper pressing surface 22B of the compression jig 22 attached to the pressing device.
- the target 10 with BP is pressurized in the vertical direction with the compression jig 22 attached to the pressurizing device, and the target 10 with BP is made flat to reduce warpage.
- the temperature at the time of pressurization may be room temperature, and the atmosphere may be air.
- the magnitude of the pressure applied to the target BP 10 is appropriately adjusted according to the state of warping occurring in the target 10 with BP.
- the warp correction method according to this embodiment can be suitably applied to the sputtering target 12 in which the total volume fraction of the metal oxide and carbon is in the range of approximately 10 to 60 vol%. Even if the total volume fraction of the metal oxide and carbon is less than 10 vol%, the warp correction method according to the present embodiment can be applied, but the total volume fraction of the metal oxide and carbon is less than 10 vol%. In many cases, even when the backing plate 14 is attached, only a small warp is generated. In the case of a small warp, even if the warp correction method according to the present embodiment is carried out, the effect is not prominent.
- the BP warpage amount b which is the warpage amount on the backing plate 14 side of the target 10 with BP, is less than 0.1 mm after pressurization. If the BP warpage amount b is reduced to less than 0.1 mm, it is unlikely that it will be difficult to properly attach the BP-equipped target 10 to the sputtering apparatus due to the influence of warpage, and cooling during sputtering is appropriate. It is difficult to think that it will be difficult to do.
- the pressure applied to the BP-equipped target 10 may be increased in one step up to the target pressure, or may be increased in two or more steps. This will be described again later using specific data in the embodiment.
- the spacer 18 has a function of further increasing the effect of reducing the warp of the target 10 with BP by applying pressure.
- silicon rubber 20 is disposed between the outer surface of the BP target 10 on the backing plate 14 side and the lower pressing surface 22A of the compression jig 22 attached to the pressing device.
- the warpage of the target 10 with BP can be reduced by applying pressure to the upper and lower sides of the target 10 with BP through the silicon rubber 20 without using the spacer 18.
- the effect of reducing the warp of the BP-equipped target 10 can be expressed more effectively with a smaller pressing force than in the case shown in FIG. This will be described again later using specific data in the embodiment.
- the thickness of the spacer 18 is preferably 0.05 to 0.5 mm. If the thickness of the spacer 18 is less than 0.05 mm, the function of further increasing the effect of reducing the warpage of the BP-attached target 10 by pressurization is weakened. On the other hand, when the thickness of the spacer 18 exceeds 0.5 mm, there is a possibility that a large reverse warp may occur in the BP-attached target 10 after being pressed.
- the spacer 18 The thickness of is more preferably 0.07 to 0.4 mm, and particularly preferably 0.08 to 0.2 mm.
- the material of the spacer 18 is required to be a material that can withstand the pressure during pressurization, but the material is not particularly limited as long as it has such characteristics.
- carbon tool steel (SK material), SUS304H, or the like can be used as the spacer 18.
- the silicon rubber 20 has a role as a cushioning material, and when the target 10 with BP is compressed in the vertical direction as shown in FIG. 2, the role of relieving stress concentration on a specific part, BP
- the material used as the buffer material is not limited to silicon rubber as long as the material can play these roles and the component does not substantially adhere to the sputtering target 12. Also good.
- the thickness of the silicon rubber 20 is preferably thick, but if the thickness of the silicon rubber 20 becomes too thick, the correction of the warp of the target 10 with BP becomes insufficient. There is a fear.
- the thickness of the silicon rubber 20 is preferably 0.5 to 1.5 mm, preferably 0.8 to 1.2 mm is more preferable, and 0.9 to 1.1 mm is particularly preferable.
- indium is used as a brazing material for joining the sputtering target 12 and the backing plate 14, but the applicable brazing material is not limited to indium.
- Other materials may be used as long as they are excellent in plastic deformation ability at room temperature and can maintain a predetermined shape holding ability without being discharged even when subjected to heat during sputtering.
- Sn alloy Sn—Pb alloy, Sn—Ag alloy, Sn—In alloy, Sn—Zn alloy, Sn—Sb alloy, Sn—Pb—Ag alloy, etc.
- other low melting point brazing materials are replaced with indium. Can also be used.
- the Sn-based alloy has a melting point of 120 ° C. or higher and 350 ° C. or lower. If the melting point is less than 120 ° C, the shape retention ability during sputtering may be insufficient, and if the melting point exceeds 350 ° C, the plastic deformation ability at room temperature may be insufficient. Further, from the viewpoint of the plastic deformation ability at normal temperature and the shape retention ability at the time of sputtering, among Sn-based alloys, those having a melting point of 120 ° C. or higher and 300 ° C. or lower are more preferable. From the viewpoint of environmental conservation, those not containing Pb are preferable.
- the material of the compression jig 22 used for pressurization is not particularly limited, and even if the BP-equipped target 10 is pressurized to correct warpage, the pressure does not substantially deform and is damaged.
- stainless steel or carbon can be used.
- Example 1 In Example 1, a sputtering target having a diameter of 158.75 mm and a thickness of 3.17 mm and a composition of Fe-35Pt-15SiO 2 -10C (the volume ratio of SiO 2 and C to the entire target is 38.47%, 4 The volume ratio of the total of SiO 2 and C to the entire target was 43.46 vol%).
- This sputtering target is a composite in which SiO 2 and C are dispersed in a matrix metal (FePt alloy).
- An oxygen-free copper backing plate having a diameter of 165.1 mm and a thickness of 3.18 mm was attached to the sputtering target with indium.
- the sputtering target, oxygen-free copper backing plate, and indium are heated to about 300 ° C., the molten indium is interposed between the sputtering target and the oxygen-free copper backing plate, and cooled to room temperature to cool the indium. After solidifying, the sputtering target and the oxygen-free copper backing plate were bonded.
- the target with BP after bonding cooled to room temperature had a warping amount on the backing plate side (BP warping amount b shown in FIG. 1) of 0.8 mm.
- a target with BP, a spacer, and silicon rubber were placed in a compression jig of a pressure device so that the same arrangement as in FIG. 2 was obtained.
- a spacer made of SK material having a thickness of 0.1 mm is provided between the outer edge of the target with BP on the backing plate side and the lower pressing surface of the compression jig attached to the pressing device.
- 1.0 mm thick silicon rubber was disposed between the outer surface of the sputtering target side of the target with BP and the upper pressure surface of the compression jig attached to the pressure device.
- pressurization was performed in the atmosphere at room temperature (about 25 ° C.).
- the press pressure to be applied pressure to pressurize
- the press pressure was increased in the order of 0.50 MPa ⁇ 2.48 MPa ⁇ 4.95 MPa ⁇ 14.86 MPa.
- the target with BP is taken out from the pressurizing apparatus, and the amount of warpage on the backing plate side (hereinafter sometimes referred to as “BP warpage amount”) is measured. did.
- the target with BP, the spacer, and the silicon rubber are again placed in the compression jig of the pressure device in the same manner as described above.
- the amount of BP warpage was measured by applying pressure at the level of. In this way, the amount of BP warpage was measured each time after the pressurization for 10 minutes at each of the four levels was completed.
- the measurement of the amount of BP warpage after the pressurization in the four stages and the pressurization at each level is performed on the same target with BP.
- Example 1 The measurement results in Example 1 are shown in Table 1 below.
- a spacer is disposed between the outer edge of the target with BP on the backing plate side and the lower pressing surface of the compression jig attached to the pressing device.
- silicon rubber is arranged between the outer surface of the backing plate side of the target with BP and the lower pressing surface of the compression jig attached to the pressing device.
- the arrangement state was the same as the arrangement state of FIG. That is, both the upper and lower sides of the target with BP were pressurized through silicon rubber.
- Example 1 press pressure was applied in four stages such as 0.50 MPa ⁇ 2.48 MPa ⁇ 4.95 MPa ⁇ 14.86 MPa, but in Comparative Example 1, 0.50 MPa ⁇ 2.48 MPa ⁇ 4
- the pressing pressure was applied in six stages, such as .95 MPa ⁇ 14.86 MPa ⁇ 24.77 MPa ⁇ 29.72 MPa.
- the target with BP was taken out from the pressurizing apparatus, and after applying the press pressure of each level, the amount of BP warpage was measured each time.
- Example 1 As can be seen from Table 3 and FIG. 4, in both Example 1 and Comparative Example 1, the BP warpage amount decreases as the press pressure is increased. In Example 1, however, the BP warpage amount is smaller than that in Comparative Example 1. The decrease in is increasing.
- Example 1 the amount of BP warpage was 0.07 mm after pressurization of 14.86 MPa, which was less than 0.1 mm. However, in Comparative Example 1, the amount of BP warp was 0 even when pressure was applied up to 29.72 MPa. It decreases only to 12mm and is not less than 0.1mm.
- Example 1 when pressurizing is effective in increasing the effect of reducing the warpage of the target with BP.
- the target with BP before pressurization after checking the state of the space
- the target with BP is heated again to about 300 ° C.
- the sputtering target and the backing plate were separated by melting, it was confirmed that the sputtering target and the backing plate maintained the original shape (the shape before being joined by indium). That is, even if pressure is applied as in Example 1 and Comparative Example 1, it is considered that the sputtering target and the backing plate are not plastically deformed. Therefore, the reason why the amount of warpage of the target with BP is reduced by pressurizing as in Example 1 and Comparative Example 1 is considered to be due to plastic deformation of indium between the sputtering target and the backing plate.
- Example 1 and Comparative Example 1 of FIG. If the target with BP whose pressure has been corrected in this way is heated again after sputtering and separated into a sputtering target and a backing plate, the separated backing plate can be used again as a backing plate.
- Example 2 In Example 1, the press pressure to be applied was increased in four stages, such as 0.50 MPa ⁇ 2.48 MPa ⁇ 4.95 MPa ⁇ 14.86 MPa, but in Example 2, the pressurization was 14.86 MPa. Was performed for 10 minutes, and pressurization was performed in one stage.
- Example 1 the same target with BP as in the first embodiment is used.
- Example 2 the pressure of 14.86 MPa was applied for 10 minutes, and then the amount of BP warpage was measured and found to be 0.07 mm.
- the value of the BP warpage amount is the same as the value of the BP warpage amount after pressurizing 14.86 MPa for 10 minutes in Example 1. Therefore, if the maximum value of the press pressure to be finally applied and the time to apply the press pressure at the maximum value are substantially the same, even if the pressurization pressure is gradually increased and the pressurization is performed in multiple stages, the pressurization is performed in one stage. However, the degree of decrease in the amount of BP warpage is considered to be the same within the scope of this experiment.
- Example 3 In Example 3, a sputtering target having a diameter of 153 mm and a thickness of 3 mm and a composition of 85 (Co-40Cr) -15TiO 2 (volume ratio of TiO 2 to the entire target was 33.02 vol%) was used.
- This sputtering target is a composite in which TiO 2 is dispersed in a matrix metal (CoCr alloy).
- An oxygen-free copper backing plate having a diameter of 161 mm and a thickness of 4 mm was attached to the sputtering target with indium.
- the sputtering target, oxygen-free copper backing plate, and indium are heated to about 300 ° C., the molten indium is interposed between the sputtering target and the oxygen-free copper backing plate, and cooled to room temperature to cool the indium. After solidifying, the sputtering target and the oxygen-free copper backing plate were bonded.
- the target with BP after bonding cooled to room temperature had a warping amount on the backing plate side (BP warping amount b shown in FIG. 1) of 0.23 mm.
- a target with BP, a spacer, and silicon rubber were placed in a compression jig of a pressure device so that the same arrangement as in FIG. 2 was obtained.
- a spacer made of SK material having a thickness of 0.1 mm is provided between the outer edge of the target with BP on the backing plate side and the lower pressing surface of the compression jig attached to the pressing device.
- 1.0 mm thick silicon rubber was disposed between the outer surface of the sputtering target side of the target with BP and the upper pressure surface of the compression jig attached to the pressure device.
- pressurization was performed in the atmosphere at room temperature (about 25 ° C.).
- the press pressure to be applied pressure to pressurize
- the press pressure was increased from 0.53 MPa to 2.67 MPa.
- the target with BP was taken out from the pressurizing device, and the amount of warpage (BP warpage amount) on the backing plate side was measured.
- the target with BP, the spacer, and the silicon rubber are again placed in the compression jig of the pressure device in the same manner as described above.
- the amount of BP warpage was measured by applying pressure at the level of. In this manner, the amount of BP warpage was measured each time after the pressurization for 10 minutes at each of the two levels was completed. In addition, the measurement of the BP warpage amount after the pressurization in the two steps and the pressurization at each level is performed on the same target with BP.
- Example 4 In Example 3, a spacer having a thickness of 0.1 mm was used. In Example 4, a spacer having a thickness of 0.2 mm was used.
- Example 4 the same target with BP as Example 3 was used, but the amount of BP warpage before pressurization of the target with BP used in Example 4 was 0.24 mm.
- Example 5 In Example 3, a spacer having a thickness of 0.1 mm was used, but in Example 5, a spacer having a thickness of 0.3 mm was used.
- Example 5 the experiment was performed under the same conditions as in Example 3.
- the target with BP similar to Example 3 is used in Example 5
- the BP warpage amount before pressurization of the target with BP used in Example 5 was 0.25 mm.
- Example 5 The measurement results in Example 5 are shown in Table 6 below.
- Example 3 (Comparative Example 2) In Example 3, a spacer is disposed between the outer edge of the target with BP on the backing plate side and the lower pressing surface of the compression jig attached to the pressing device. Instead of using silicon rubber, silicon rubber is placed between the outer surface on the backing plate side of the target with BP and the lower pressing surface of the compression jig attached to the pressing device.
- the arrangement state is the same as the arrangement state of FIG. That is, both the upper and lower sides of the target with BP were pressurized through silicon rubber.
- Example 3 press pressure was applied in two stages, such as 0.53 MPa ⁇ 2.67 MPa, but in Comparative Example 2, 0.53 MPa ⁇ 2.67 MPa ⁇ 5.33 MPa ⁇ 16.00 MPa ⁇ 26
- the pressing pressure was applied in 6 stages, such as .67 MPa ⁇ 29.33 MPa. Then, after maintaining the pressure for 10 minutes at each level of press pressure, the target with BP was taken out from the pressurizing apparatus, and after applying the press pressure of each level, the amount of BP warpage was measured each time.
- Table 8 below collectively shows the measurement results of the BP warpage amount for Examples 3 to 5 and Comparative Example 2, and FIG. 5 shows a bar graph of the measurement results.
- Table 8 the amount of BP warpage at a press pressure of 5.33 MPa, 16.00 MPa, 26.67 MPa, and 29.33 MPa, which is measured in Comparative Example 2, is not shown for convenience of table creation.
- the amount of BP warpage at the press pressure is also represented by a bar graph.
- the BP warpage amounts after pressurization of 0.53 MPa were 0.06 mm, 0.05 mm, and 0.05 mm, respectively, which were less than 0.1 mm. Then, when the pressure is 0.53 MPa, the amount of BP warpage decreases only to 0.15 mm, and does not fall below 0.1 mm.
- the spacers used were 0.1 mm in Example 3, 0.2 mm in Example 4, and 0.3 mm in Example 5, but after the pressing pressure of 0.53 MPa was applied.
- the amounts of BP warpage in Examples 3, 4, and 5 were 0.06 mm, 0.05 mm, and 0.05 mm, respectively, and there was almost no difference, and Examples 3, 4, and 5 after the press pressure of 2.67 MPa was applied.
- the BP warpage amount in each was 0.01 mm, and there was no difference. Therefore, within the range of this experiment, it is considered that even if the thickness of the spacer is varied in the range of 0.1 to 0.3 mm, the effect of reducing the BP warpage amount is hardly affected.
- the target with BP after the pressurization was finished (after the pressurization of 2.67 MPa in Examples 3 to 5 and after the pressurization of 29.33 MPa in Comparative Example 2) was heated again to about 300 ° C.
- indium was melted and the sputtering target and the backing plate were separated, it was confirmed that the sputtering target and the backing plate maintained the original shape (the shape before joining with indium). That is, even when pressure is applied as in Examples 3 to 5 and Comparative Example 2, it is considered that the sputtering target and the backing plate are not plastically deformed. Therefore, the reason why the amount of warpage of the target with BP is reduced by pressurizing as in Examples 3 to 5 and Comparative Example 2 is considered to be due to plastic deformation of indium between the sputtering target and the backing plate.
- the backing plate after separation maintains the original shape (the shape before joining with indium). If a target with BP that has been pressed and corrected for warping as in Comparative Example 2 is heated again after sputtering and separated into a sputtering target and a backing plate, the separated backing plate can be used again as a backing plate. it can.
- Example 6 In Example 3, the press pressure to be applied was increased in two steps such as 0.53 MPa ⁇ 2.67 MPa, but in Example 6, pressurization of 2.51 MPa was only performed for 10 minutes. Pressurization was performed in one stage.
- the thickness of the spacer used is 0.1 mm.
- the same target with BP as in the third embodiment is used.
- Example 6 the pressure of 2.51 MPa was applied for 10 minutes, and then the BP warpage amount was measured to be 0.01 mm.
- the value of this BP warpage amount is the same as the value of the BP warpage amount after pressurizing 2.67 MPa for 10 minutes in Example 3. Therefore, if the maximum value of the press pressure to be finally applied and the time to apply the press pressure at the maximum value are substantially the same, even if the pressurization pressure is gradually increased and the pressurization is performed in multiple stages, the pressurization is performed in one stage. However, the degree of decrease in the amount of BP warpage is considered to be the same.
- Example 7 In Example 4, the press pressure to be applied was increased in two steps such as 0.53 MPa ⁇ 2.67 MPa, but in Example 7, pressurization of 2.51 MPa was only performed for 10 minutes. Pressurization was performed in one stage.
- the spacer used has a thickness of 0.2 mm.
- the same target with BP as in the fourth embodiment is used.
- Example 7 the pressure of 2.51 MPa was applied for 10 minutes, and then the BP warpage amount was measured to be 0.01 mm.
- the value of this BP warpage amount is the same as the value of the BP warpage amount after pressurizing 2.67 MPa for 10 minutes in Example 4. Therefore, if the maximum value of the press pressure to be finally applied and the time to apply the press pressure at the maximum value are substantially the same, even if the pressurization pressure is gradually increased and the pressurization is performed in multiple stages, the pressurization is performed in one stage. However, the degree of decrease in the amount of BP warpage is considered to be the same.
- Example 8 In Example 5, the press pressure to be applied was increased in two steps, such as 0.53 MPa ⁇ 2.67 MPa, but in Example 8, pressurization of 2.51 MPa was only performed for 10 minutes. Pressurization was performed in one stage.
- the spacer used has a thickness of 0.3 mm.
- the same target with BP as in the fifth embodiment is used.
- Example 8 the pressure of 2.51 MPa was applied for 10 minutes, and then the BP warpage amount was measured to be 0.01 mm.
- the value of the BP warpage amount is the same as the value of the BP warpage amount after pressing at 2.67 MPa for 10 minutes in Example 5. Therefore, if the maximum value of the press pressure to be finally applied and the time to apply the press pressure at the maximum value are substantially the same, even if the pressurization pressure is gradually increased and the pressurization is performed in multiple stages, the pressurization is performed in one stage. However, the degree of decrease in the amount of BP warpage is considered to be the same.
- the reverse warp amount X is the amount of reverse warp generated at the outer edge portion of the backing plate 14.
- the reverse warpage amounts are 0.05 mm and 0.06 mm, respectively, and are less than 0.1 mm, and the target with BP is suitable for the sputtering apparatus. It is unlikely that it will be difficult to attach to the substrate, and it is unlikely that cooling during sputtering will be performed properly.
- the target with BP was again heated to about 300 ° C. to indium.
- the sputtering target and the backing plate were separated by melting, it was confirmed that the sputtering target and the backing plate maintained the original shape (the shape before joining with indium). Therefore, it is considered that it does not cause plastic deformation and does not hinder the reuse of the backing plate.
- the amounts of reverse warpage generated in Examples 3 and 6 using spacers with a thickness of 0.1 mm were 0.02 mm and 0.01 mm, respectively, and Examples 4 and 4 using spacers with a thickness of 0.2 mm were used. 7 were 0.03 mm and 0.03 mm, respectively, and the amounts of reverse warp generated in Examples 5 and 8 using a spacer having a thickness of 0.3 mm were 0.05 mm and 0.03 mm, respectively. Since the thickness of the spacer to be used is the same, if the maximum value of the press pressure to be finally applied and the time for applying the press pressure at the maximum value are substantially the same, gradually increase the pressure. It can be considered that there is no substantial difference in the effect on the occurrence of reverse warp even if the pressure is applied in multiple stages or in one stage.
- Example 9 In Example 9, a sputtering target having a diameter of 161.93 mm, a thickness of 3.18 mm, and a composition of 89 (Co-10Cr-18Pt) -5TiO 2 -3Co 3 O 4 -3B 2 O 3 was used.
- This sputtering target is a composite in which oxides (TiO 2 , Co 3 O 4 , B 2 O 3 ) are dispersed in a matrix metal (CoCrPt alloy), and the oxides (TiO 2 , Co 3 O 4 , B 2).
- the volume ratio of the total of O 3 ) to the entire target is 34.08 vol%.
- a stepped oxygen-free copper backing plate was attached to the sputtering target with indium.
- This stepped oxygen-free copper backing plate has different outer diameters on the side close to the target and on the side far from the target, and the shape on the side close to the target (the side to be bonded to the target) is 161.93 mm in diameter and 1.50 mm in thickness.
- the shape on the side far from the target has a diameter of 165.10 mm and a thickness of 1.68 mm, and the total thickness is 3.18 mm.
- the stepped oxygen-free-copper backing plate used in this Example 9 is outside on the side close
- the diameters are different, and the shape of the backing plate 14 shown in FIGS. 1, 2 and 6 is different in this respect.
- Example 9 when the sputtering target is attached to the stepped oxygen-free copper backing plate with indium, the sputtering target, the stepped oxygen-free copper backing plate, and indium are heated to about 300 ° C., and the molten indium is sputtered. It was interposed between the target and the stepped oxygen-free copper backing plate, cooled to room temperature to solidify indium, and the sputtering target and the stepped oxygen-free copper backing plate were bonded.
- the target with BP after bonding cooled to room temperature had a warping amount on the backing plate side (BP warping amount b shown in FIG. 1) of 0.32 mm.
- a target with BP, a spacer, and silicon rubber were placed in a compression jig of a pressure device so that the same arrangement as in FIG. 2 was obtained.
- a spacer made of SK material having a thickness of 0.1 mm is provided between the outer edge of the target with BP on the backing plate side and the lower pressing surface of the compression jig attached to the pressing device.
- 1.0 mm thick silicon rubber was disposed between the outer surface of the sputtering target side of the target with BP and the upper pressure surface of the compression jig attached to the pressure device.
- the target with BP after bonding the sputtering target and the stepped oxygen-free copper backing plate with indium is pressurized at room temperature (about 25 ° C.) in the atmosphere. went.
- pressurization of 2.67 MPa was only performed for 10 minutes, and pressurization was performed in one stage.
- the target with BP was taken out from the pressurizing apparatus, and the amount of warpage (BP warpage amount) on the backing plate side was measured.
- Example 9 in which pressurization was performed in one stage, after the pressurization of 2.67 MPa was performed, the outer edge portion of the backing plate was observed, and as shown in FIG. Warped in the opposite direction).
- the reverse warp amount X is the amount of reverse warp generated at the outer edge portion of the backing plate 14.
- the amount of the reverse warp observed on the backing plate after finishing the pressurization of 2.67 MPa was measured, it was 0.01 mm, and the reverse warp amount was sufficiently less than 0.1 mm.
- Example 10 a sputtering target having a diameter of 161.93 mm, a thickness of 3.18 mm, and a composition of 90 (Co-15Cr-20Pt) -4SiO 2 -3TiO 2 -3CoO was used.
- the sputtering target is a complex dispersed in the oxide (SiO 2, TiO 2, CoO ) is the matrix metal (CoCrPt alloy), the volume for the whole sum of the target oxide (SiO 2, TiO 2, CoO ) The ratio is 23.72 vol%.
- the target with BP after bonding the sputtering target and the stepped oxygen-free copper backing plate with indium had a warping amount on the backing plate side (BP warping amount b shown in FIG. 1) of 0.28 mm.
- the target with BP after bonding the sputtering target and the stepped oxygen-free copper backing plate with indium was pressurized at 2.67 MPa for 10 minutes in the same manner as in Example 9, and pressurized in one step. went.
- BP warpage amount amount of warpage on the backing plate side after pressurization was measured, it was 0.01 mm, which was a BP warpage amount sufficiently lower than 0.1 mm.
- Example 10 in which pressurization was performed in one stage, after the pressurization of 2.67 MPa was performed, the outer edge portion of the backing plate was observed.
- the reverse warp (the warp before pressurization) as shown in FIG. Warped in the opposite direction).
- the reverse warp amount X is the amount of reverse warp generated at the outer edge portion of the backing plate 14.
- the amount of reverse warping observed on the backing plate after finishing the pressurization of 2.67 MPa was 0.01 mm, and the amount of reverse warping was well below 0.1 mm.
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Abstract
Description
本実施例1では、直径158.75mm、厚さ3.17mmで、組成がFe-35Pt-15SiO2-10Cのスパッタリングターゲット(SiO2、Cのターゲット全体に対する体積比はそれぞれ38.47%、4.99%であり、SiO2とCの合計のターゲット全体に対する体積比は43.46vol%)を用いた。このスパッタリングターゲットは、SiO2およびCがマトリックス金属(FePt合金)中に分散した複合体である。
実施例1では、BP付きターゲットのバッキングプレートの側の外縁部と、加圧装置に取り付けられた圧縮治具の下側の加圧面との間にスペーサを配置したが、本比較例1ではスペーサに替えてシリコンゴムを用いており、BP付きターゲットのバッキングプレートの側の外面と、加圧装置に取り付けられた圧縮治具の下側の加圧面との間にシリコンゴムを配置しており、図3の配置状態と同様の配置状態とした。即ち、BP付きターゲットの上下のどちらの側もシリコンゴムを介して加圧するようにした。
実施例1および比較例1についてのBP反り量の測定結果をまとめたものを次の表3に示し、それを棒グラフにしたものを図4に示す。
実施例1では、加えるプレス圧力を、0.50MPa→2.48MPa→4.95MPa→14.86MPaのように4段階で大きくしていったが、本実施例2では、14.86MPaの加圧を10分間行ったのみであり、1段階で加圧を行った。
本実施例3では、直径153mm、厚さ3mmで、組成が85(Co-40Cr)-15TiO2のスパッタリングターゲット(TiO2のターゲット全体に対する体積比は33.02vol%)を用いた。このスパッタリングターゲットは、TiO2がマトリックス金属(CoCr合金)中に分散した複合体である。
実施例3では厚さ0.1mmのスペーサを用いたが、本実施例4では厚さ0.2mmのスペーサを用いた。
実施例3では厚さ0.1mmのスペーサを用いたが、本実施例5では厚さ0.3mmのスペーサを用いた。
実施例3では、BP付きターゲットのバッキングプレートの側の外縁部と、加圧装置に取り付けられた圧縮治具の下側の加圧面との間にスペーサを配置したが、本比較例2ではスペーサを用いる代わりにシリコンゴムを用いており、BP付きターゲットのバッキングプレートの側の外面と、加圧装置に取り付けられた圧縮治具の下側の加圧面との間にシリコンゴムを配置しており、図3の配置状態と同様の配置状態とした。即ち、BP付きターゲットの上下のどちらの側もシリコンゴムを介して加圧するようにした。
次の表8に、実施例3~5および比較例2についてのBP反り量の測定結果をまとめて示し、それを棒グラフにしたものを図5に示す。ただし、表8では、表作成の都合上、比較例2において測定した、プレス圧力5.33MPa、16.00MPa、26.67MPa、29.33MPaでのBP反り量は記載していない。図5では、それらのプレス圧力におけるBP反り量も棒グラフで表現している。
実施例3では、加えるプレス圧力を、0.53MPa→2.67MPaのように2段階で大きくしていったが、本実施例6では、2.51MPaの加圧を10分間行ったのみであり、1段階で加圧を行った。
実施例4では、加えるプレス圧力を、0.53MPa→2.67MPaのように2段階で大きくしていったが、本実施例7では、2.51MPaの加圧を10分間行ったのみであり、1段階で加圧を行った。
実施例5では、加えるプレス圧力を、0.53MPa→2.67MPaのように2段階で大きくしていったが、本実施例8では、2.51MPaの加圧を10分間行ったのみであり、1段階で加圧を行った。
2段階で加圧を行った実施例3~5において、2.67MPaの加圧終了後に、バッキングプレートの外縁部を観察したところ、図6に示すような逆反り(加圧前の反りとは反対方向の反り)が生じていた。また、1段階で加圧を行った実施例6~8においても、2.51MPaの加圧終了後に、バッキングプレートの外縁部を観察したところ、図6に示すような逆反り(加圧前の反りとは反対方向の反り)が生じていた。
本実施例9では、直径161.93mm、厚さ3.18mmで、組成が89(Co-10Cr-18Pt)-5TiO2-3Co3O4-3B2O3のスパッタリングターゲットを用いた。このスパッタリングターゲットは、酸化物(TiO2、Co3O4、B2O3)がマトリックス金属(CoCrPt合金)中に分散した複合体であり、酸化物(TiO2、Co3O4、B2O3)の合計のターゲット全体に対する体積比は34.08vol%である。
本実施例10では、直径161.93mm、厚さ3.18mmで、組成が90(Co-15Cr-20Pt)-4SiO2-3TiO2-3CoOのスパッタリングターゲットを用いた。このスパッタリングターゲットは、酸化物(SiO2、TiO2、CoO)がマトリックス金属(CoCrPt合金)中に分散した複合体であり、酸化物(SiO2、TiO2、CoO)の合計のターゲット全体に対する体積比は23.72vol%である。
12…スパッタリングターゲット
14…バッキングプレート
14A…外縁部
16…インジウム
18…スペーサ
20…シリコンゴム
22…圧縮治具
22A…下側の加圧面
22B…上側の加圧面
a…TG反り量
b…BP反り量
X…逆反り量
Claims (13)
- スパッタリングターゲットとバッキングプレートとをろう材で接合してなり、前記スパッタリングターゲットの側が凸に、前記バッキングプレートの側が凹に反っているバッキングプレート付きスパッタリングターゲットの反りを減少させるバッキングプレート付きスパッタリングターゲットの反り矯正方法であって、
上下方向に対向するように上側の加圧面と下側の加圧面を備えていて該下側の加圧面の上に配置された被加圧物を上下方向に加圧することができる加圧装置の前記下側の加圧面に、前記バッキングプレート付きスパッタリングターゲットを前記スパッタリングターゲットの側が上方に位置するように配置するとともに、前記バッキングプレート付きスパッタリングターゲットの前記バッキングプレートの側の外縁部と前記加圧装置の前記下側の加圧面との間にスペーサを配置する配置工程と、
前記配置工程の後、前記バッキングプレート付きスパッタリングターゲットを前記加圧装置により上下方向に加圧する加圧工程と、
を有し、
前記スパッタリングターゲットは、金属酸化物および炭素のうちの少なくとも一方がマトリックス金属中に分散した複合体であることを特徴とするバッキングプレート付きスパッタリングターゲットの反り矯正方法。 - 前記金属酸化物および前記炭素の合計の前記スパッタリングターゲット全体に対する体積分率が10~60vol%であることを特徴とする請求項1に記載のバッキングプレート付きスパッタリングターゲットの反り矯正方法。
- 前記バッキングプレートは無酸素銅または銅合金であることを特徴とする請求項1または2に記載のバッキングプレート付きスパッタリングターゲットの反り矯正方法。
- 前記加圧工程において、前記バッキングプレート付きスパッタリングターゲットに加える圧力を、目標とする圧力まで1段階で上昇させることを特徴とする請求項1~3のいずれかに記載のバッキングプレート付きスパッタリングターゲットの反り矯正方法。
- 前記バッキングプレート側の反り量が0.1mm未満となることを特徴とする請求項1~4のいずれかに記載のバッキングプレート付きスパッタリングターゲットの反り矯正方法。
- 前記スペーサの厚さは、0.05~0.5mmであることを特徴とする請求項1~5のいずれかに記載のバッキングプレート付きスパッタリングターゲットの反り矯正方法。
- 前記ろう材は、インジウムであることを特徴とする請求項1~6のいずれかに記載のバッキングプレート付きスパッタリングターゲットの反り矯正方法。
- 前記ろう材は、Sn系合金であることを特徴とする請求項1~6のいずれかに記載のバッキングプレート付きスパッタリングターゲットの反り矯正方法。
- 前記配置工程において、さらに、前記バッキングプレート付きスパッタリングターゲットの前記スパッタリングターゲットの側の外面と前記上側の加圧面との間に緩衝材を配置することを特徴とする請求項1~8のいずれかに記載のバッキングプレート付きスパッタリングターゲットの反り矯正方法。
- 前記緩衝材は、シリコンゴムであることを特徴とする請求項9に記載のバッキングプレート付きスパッタリングターゲットの反り矯正方法。
- 前記シリコンゴムは、厚さが0.5~1.5mmであることを特徴とする請求項10に記載のバッキングプレート付きスパッタリングターゲットの反り矯正方法。
- 常温大気中で行うことを特徴とする請求項1~11のいずれかに記載のバッキングプレート付きスパッタリングターゲットの反り矯正方法。
- 前記スパッタリングターゲットおよび前記バッキングプレートを塑性変形させないことを特徴とする請求項1~12のいずれかに記載のバッキングプレート付きスパッタリングターゲットの反り矯正方法。
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JP (1) | JPWO2015037546A1 (ja) |
CN (1) | CN105531396A (ja) |
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JP6677853B1 (ja) * | 2019-02-07 | 2020-04-08 | 住友化学株式会社 | スパッタリングターゲット、ターゲット材とバッキングプレートを接合する方法およびスパッタリングターゲットの製造方法 |
CN110814096B (zh) * | 2019-11-18 | 2021-06-11 | 宁波江丰电子材料股份有限公司 | 一种金属靶材焊接后整形方法及焊接方法 |
KR20220104150A (ko) * | 2019-11-21 | 2022-07-26 | 미쓰이금속광업주식회사 | 스퍼터링 타깃 및 그 제조 방법 |
CN111468563A (zh) * | 2020-04-15 | 2020-07-31 | 宁波江丰电子材料股份有限公司 | 一种钛钨方形靶材组件的校正方法 |
CN111774437B (zh) * | 2020-07-28 | 2022-04-08 | 宁波江丰电子材料股份有限公司 | 一种靶材焊接后的加压整形方法 |
CN112958864A (zh) * | 2021-02-18 | 2021-06-15 | 宁波江丰电子材料股份有限公司 | 一种圆形靶材和背板的钎焊焊接方法 |
Citations (5)
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JPH02122071A (ja) * | 1988-10-28 | 1990-05-09 | Tanaka Kikinzoku Kogyo Kk | スパッタリングターゲットの製造方法 |
JPH05214518A (ja) * | 1992-02-04 | 1993-08-24 | Hitachi Metals Ltd | スパッタリングターゲットとバッキングプレートの接合体の矯正方法およびスパッタリングターゲット材 |
JP2001131738A (ja) * | 1999-11-09 | 2001-05-15 | Nikko Materials Co Ltd | スパッタリングターゲット/バッキングプレート組立体の矯正方法及び同矯正装置 |
JP2001140064A (ja) * | 1999-11-12 | 2001-05-22 | Kojundo Chem Lab Co Ltd | スパッタリング用ターゲット接合体及びその製造方法 |
JP2012214874A (ja) * | 2011-03-30 | 2012-11-08 | Tanaka Kikinzoku Kogyo Kk | FePt−C系スパッタリングターゲット及びその製造方法 |
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US5693203A (en) * | 1992-09-29 | 1997-12-02 | Japan Energy Corporation | Sputtering target assembly having solid-phase bonded interface |
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- 2014-09-05 JP JP2015536567A patent/JPWO2015037546A1/ja active Pending
- 2014-09-05 CN CN201480049960.5A patent/CN105531396A/zh active Pending
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- 2014-09-05 US US14/917,419 patent/US20160211124A1/en not_active Abandoned
- 2014-09-11 TW TW103131351A patent/TW201514013A/zh unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH02122071A (ja) * | 1988-10-28 | 1990-05-09 | Tanaka Kikinzoku Kogyo Kk | スパッタリングターゲットの製造方法 |
JPH05214518A (ja) * | 1992-02-04 | 1993-08-24 | Hitachi Metals Ltd | スパッタリングターゲットとバッキングプレートの接合体の矯正方法およびスパッタリングターゲット材 |
JP2001131738A (ja) * | 1999-11-09 | 2001-05-15 | Nikko Materials Co Ltd | スパッタリングターゲット/バッキングプレート組立体の矯正方法及び同矯正装置 |
JP2001140064A (ja) * | 1999-11-12 | 2001-05-22 | Kojundo Chem Lab Co Ltd | スパッタリング用ターゲット接合体及びその製造方法 |
JP2012214874A (ja) * | 2011-03-30 | 2012-11-08 | Tanaka Kikinzoku Kogyo Kk | FePt−C系スパッタリングターゲット及びその製造方法 |
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CN105531396A (zh) | 2016-04-27 |
SG11201601755PA (en) | 2016-04-28 |
TW201514013A (zh) | 2015-04-16 |
US20160211124A1 (en) | 2016-07-21 |
JPWO2015037546A1 (ja) | 2017-03-02 |
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