WO2011018895A1 - スパッタリングターゲットの製造方法及びスパッタリングターゲット - Google Patents
スパッタリングターゲットの製造方法及びスパッタリングターゲット Download PDFInfo
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- WO2011018895A1 WO2011018895A1 PCT/JP2010/005029 JP2010005029W WO2011018895A1 WO 2011018895 A1 WO2011018895 A1 WO 2011018895A1 JP 2010005029 W JP2010005029 W JP 2010005029W WO 2011018895 A1 WO2011018895 A1 WO 2011018895A1
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/34—Sputtering
-
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J1/00—Preparing metal stock or similar ancillary operations prior, during or post forging, e.g. heating or cooling
- B21J1/02—Preliminary treatment of metal stock without particular shaping, e.g. salvaging segregated zones, forging or pressing in the rough
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J1/00—Preparing metal stock or similar ancillary operations prior, during or post forging, e.g. heating or cooling
- B21J1/02—Preliminary treatment of metal stock without particular shaping, e.g. salvaging segregated zones, forging or pressing in the rough
- B21J1/025—Preliminary treatment of metal stock without particular shaping, e.g. salvaging segregated zones, forging or pressing in the rough affecting grain orientation
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/08—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of copper or alloys based thereon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/16—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon
- C22F1/18—High-melting or refractory metals or alloys based thereon
Definitions
- the present invention relates to a method for producing a sputtering target formed by forging a metal and a sputtering target produced by the method.
- sputtering has been widely used to form metal layers or insulating layers. ing.
- plasma is formed in a vacuum chamber in which a target made of a film-forming material and a substrate are arranged to face each other, and ions in the plasma collide with the target to generate sputtered particles from the target.
- a film is formed by depositing on top.
- the above-mentioned characteristics are obtained by subjecting a crystalline metal ingot to machining such as rolling or forging.
- Patent Document 1 describes a method for manufacturing an aluminum alloy sputtering target, in which an alloy ingot (ingot) of aluminum and copper is cold-worked, the work material is annealed at a predetermined temperature in an argon stream, and then rapidly cooled. ing.
- Patent Document 2 a plate material is manufactured by hot forging and hot rolling with respect to a cobalt ingot, and after the thickness of the plate material is made uniform, a cold rolling process at the same rolling rate in the biaxial direction is performed. And a method for producing a cobalt target for sputtering, in which a heat treatment step at a predetermined temperature is repeated.
- JP 2002-69626 A (paragraph [0006]) JP 2007-297679 A (paragraph [0015])
- an object of the present invention is to provide a method for manufacturing a sputtering target and a sputtering target capable of making crystal grains fine and uniform.
- a sputtering target manufacturing method forges a metal ingot by applying stress in a first axial direction and a plane direction orthogonal to the first axial direction.
- the process of carrying out is included.
- the ingot is further forged by applying stress in the second axial direction that obliquely intersects the direction parallel to the first axial direction.
- the ingot is heat-treated at a temperature higher than its recrystallization temperature.
- the sputtering target according to one embodiment of the present invention includes a target body and a surface to be sputtered.
- the target body has a plate shape made of metal.
- the sputtered surface has an average particle diameter of 70 ⁇ m or less and a crystal orientation in which the X-ray intensity ratio of the (111) plane to the (200) plane is 0.3 or less.
- the manufacturing method of the sputtering target which concerns on one Embodiment of this invention includes the process of forging a metal ingot by applying stress to the 1st axial direction and the plane direction orthogonal to the said 1st axial direction.
- the ingot is further forged by applying stress in the second axial direction that obliquely intersects the direction parallel to the first axial direction.
- the ingot is heat-treated at a temperature higher than its recrystallization temperature.
- the sputtering target manufacturing method when forging an ingot, stress is applied not only to the first axial direction and a plane direction perpendicular to the first axial direction but also to a second axial direction intersecting with the first axial direction. .
- the deformation can be caused not only in the first axial direction and the plane direction orthogonal to the first axial direction but also in the second axial direction, so that the internal stress can be densified and made uniform. Thereby, concentration of the load in the coaxial direction can be avoided, and the dislocation density can be prevented from becoming uneven.
- the heat treatment step aims at removing internal strain of the ingot and rearranging the crystals. It may be performed after the ingot is formed into a target shape (plate shape), or may be performed as a part of the ingot forging process (for example, hot forging).
- the average particle diameter of the crystal grains can be set to, for example, 70 ⁇ m or less. Further, it is possible to manufacture a sputtering target including a sputtering target surface having a crystal orientation in which the X-ray intensity ratio of the (111) plane to the (200) plane is 0.3 or less.
- the step of applying stress in the plane direction orthogonal to the first axial direction may include deforming the ingot from a cylindrical shape to a rectangular parallelepiped shape.
- the step of applying stress in the second axial direction includes compressing and deforming the ingot between opposite sides or diagonals of the rectangular parallelepiped ingot.
- the method for manufacturing the sputtering target includes forging the ingot by applying stress in a third axial direction that obliquely intersects the direction parallel to the first axial direction and is not parallel to the second axial direction. You may further comprise the process to do. This makes it possible to further refine the particle size.
- the metal is not particularly limited, and the crystal structure (face-centered cubic, body-centered cubic, closest hexagon, etc.) is not limited.
- the metal for example, tantalum, titanium, aluminum, copper, a crystalline metal (polycrystalline metal) mainly containing any of these, or an alloy thereof can be used.
- a sputtering target includes a target body and a surface to be sputtered.
- the target body has a plate shape made of metal.
- the sputtered surface has an average particle diameter of 70 ⁇ m or less and a crystal orientation in which the X-ray intensity ratio of the (111) plane to the (200) plane is 0.3 or less.
- the above sputtering target since it has a fine and uniform crystal structure and a stable crystal orientation, it is possible to stabilize the sputtering and make the film quality uniform.
- FIG. 1 is a process diagram showing a sputtering target manufacturing method according to an embodiment of the present invention.
- FIG. 2 is a schematic view showing how the ingot is deformed in each step.
- the manufacturing process of the sputtering target according to the present embodiment includes an ingot production process ST1, a first hot forging process ST2a, a second hot forging process ST2b, a cold forging process ST3a, and a heat treatment process ST3b. Prepare.
- a crystalline alloy mainly composed of Al is used as the ingot 10.
- the aluminum alloy an Al—Cu alloy, an Al—Si alloy, an Al—Si—Cu alloy, or the like is applicable.
- the constituent metal of the ingot 10 is not limited to aluminum and alloys thereof, and for example, pure metals such as tantalum, titanium, and copper, or alloys containing any of these as main components are applicable.
- the aluminum alloy ingot 10 is produced by casting a molten aluminum alloy.
- the shape and size of the ingot 10 are not particularly limited, and are appropriately set according to the size of the target to be manufactured.
- the ingot 10 can have a cylindrical shape having a diameter of 160 to 200 mm and a height of 200 to 250 mm (FIG. 2A).
- the plane orientation of the upper surface of the ingot 10 is, for example, (200).
- first hot forging process In the first hot forging step ST2a, the ingot 10 is deformed from a cylindrical shape to a rectangular parallelepiped shape (FIG. 2B). In this step, a compressive stress is applied to the ingot 10 heated to 250 to 420 ° C. along the z-axis direction (first axial direction) that is the height direction. At the same time, a rectangular parallelepiped ingot 11 is produced from the cylindrical ingot 10 by applying stress in the xy plane direction orthogonal to the z-axis (FIG. 2B).
- the deformation operation in the z-axis direction and the xy plane direction may be performed simultaneously or alternately.
- a predetermined forging die may be used.
- the deformation operation in the xy plane direction may also be performed simultaneously, or may be performed alternately in the x-axis direction and the y-axis direction.
- the heating temperature of the ingot 10 is not limited to the above example, and can be set to an appropriate temperature.
- the heating temperature is set to a temperature that is, for example, equal to or higher than the recrystallization temperature of the ingot 10 and does not cause work cracks during forging.
- the processing rate in the first hot forging step is also not particularly limited, and is appropriately determined according to the material, the heating temperature, and the intended material characteristics.
- compression deformation processing in the z-axis direction and the xy plane direction is repeatedly performed. This operation is also called fir forging.
- the deformation operation in the three-axis directions (x-axis, y-axis, and z-axis directions) as described above causes the ingot 10 to bend and deform along the three-axis direction with respect to the internal tissue.
- the ingot 10 After completion of the first hot forging, the ingot 10 is water quenched (WQ). As a result, the crystal is prevented from returning to the original position along the twisted line (turned surface). Then, the rectangular parallelepiped ingot 11 is cut into a predetermined thickness, whereby a rectangular parallelepiped ingot piece 12 is produced. Subsequently, a second hot forging process is performed on each ingot piece 12.
- the ingot piece 12 is compressed and deformed between the diagonal or opposite sides of the rectangular ingot piece. That is, as shown in FIG. 2C, for example, when the long side direction of the ingot piece 12 is oriented in the z-axis direction, an axial direction (for example, c11, c12, c21) that obliquely intersects with the direction parallel to the z-axis. C22), stress is applied.
- the treatment temperature at this time can be set to 250 to 420 ° C., for example, as in the first hot forging step.
- the c11 axis indicates an axial direction connecting between one apex t1 on the upper surface side of the ingot piece 12 and one apex t2 on the lower surface side opposite to the apex t1.
- the c12 axis indicates an axial direction connecting another one vertex t3 on the upper surface side of the ingot piece 12 and another one vertex t4 on the lower surface side that is opposed to the vertex t3.
- the present invention is not limited to the above example, and compressive stress may also be applied in the axial direction connecting the remaining two vertices on the upper surface side and the two vertices on the lower surface side facing these.
- the c21 axis indicates an axial direction connecting one side s1 on the upper surface side of the ingot piece 12 and one side s2 on the lower surface side that is opposed to the side s1.
- the c22 axis indicates an axial direction connecting the other one side s3 on the upper surface side of the ingot piece 12 and the other one side s4 on the lower surface side facing the side s3.
- the present invention is not limited to the above example, and compressive stress may also be applied in the axial direction connecting the other two sides on the upper surface side and the other two sides on the lower surface side facing these.
- the compressive stress from the oblique direction applied to the ingot piece 12 may be either one of the diagonal and the opposite sides of the ingot 12 or both.
- the present invention is not limited to an example in which all pairs of diagonals or opposite sides are targeted, and any pair of diagonals or opposite sides may be targeted.
- the compression processing from the oblique direction is not limited to being performed only once in the same direction, and may be performed a plurality of times.
- a polyhedral ingot piece 13 as shown in FIG. 2D is formed from the rectangular ingot piece 12.
- the ingot piece 13 is deformed not only in the z-axis direction and the xy plane direction but also in each oblique axis direction such as c11, c12, c21, c22, etc., thereby increasing the internal stress density and uniformity. It has been. Therefore, it is possible to avoid concentration of loads in the z-axis direction and the xy plane direction, and to suppress dislocation density non-uniformity.
- the ingot piece 13 subjected to the forging process from the oblique direction is then deformed into a cylindrical ingot piece 14 as shown in FIG. 2E by applying stress in the z-axis direction and the xy plane direction.
- size of the ingot piece 14 is not specifically limited, For example, a diameter is 330 mm and height is 40 mm.
- the cylindrical ingot piece 14 is deformed into a disk-shaped molded body 15 as shown in FIG.
- the molded body 15 is formed by compressing and deforming the ingot piece 14 in the z-axis direction.
- size of the molded object 15 is not specifically limited, For example, a diameter is 360 mm and thickness is 30 mm.
- a stamping forging method or a rolling method can be employed.
- the processing temperature is not particularly limited, and can be, for example, room temperature.
- the ingot piece 15 produced through the first and second forging steps ST2a and ST2b is heated to a predetermined temperature equal to or higher than the recrystallization temperature for a predetermined time, whereby the internal structure of the molded body 15 is recrystallized. It is a process to make it.
- the processing temperature is, for example, 280 ° C. or higher and 350 ° C. or lower, and the processing time is, for example, 1 hour.
- recrystallization treatment of the molded body 15 By recrystallization treatment of the molded body 15, internal strain is removed and crystal rearrangement is promoted.
- the internal stress is densified and made uniform by the forging processes ST2a and ST2b described above, nucleation during recrystallization can be made uniform.
- the deformation is generated not only in the z-axis direction and the xy plane direction but also in a direction obliquely intersecting these, the dislocation lines intersect three-dimensionally, and as a result, crystal grains Are refined and distributed uniformly. Therefore, fine recrystallized grains can be uniformly grown by the heat treatment.
- the grain size of the recrystallized grains is, for example, 60 to 70 ⁇ m.
- the X-ray intensity ratio of the (111) plane to the (200) plane can be suppressed to 0.3 or less.
- the molded body 15 is processed into a target shape, size, and thickness to produce a sputtering target.
- the sputtering target produced as described above includes a plate-like target body made of a crystalline metal and a surface to be sputtered constituting a part of the surface.
- the surface to be sputtered has an average particle diameter of 70 ⁇ m or less and a crystal orientation in which the X-ray intensity ratio of the (111) plane to the (200) plane is 0.3 or less. According to this sputtering target, since it has a fine and uniform crystal structure and a stable crystal orientation, it is possible to stabilize the sputtering and make the film quality uniform.
- FIG. 3 is a process diagram showing one manufacturing method of a sputtering target shown as a comparative example.
- the cylindrical ingot 20 shown in FIG. 3A is alternately subjected to compression deformation along the z-axis direction and compression deformation along the plane direction orthogonal to the z-axis (FIG. 3B).
- FIG. 3B shows that after the cylindrical ingot 20 shown in FIG. 3A is alternately subjected to compression deformation along the z-axis direction and compression deformation along the plane direction orthogonal to the z-axis.
- FIG. 4A shows an X-ray diffraction result of the sputtering target surface of the sputtering target according to the present embodiment manufactured by the process shown in FIG.
- FIG. 4B shows the X-ray diffraction result of the sputtering target surface of the sputtering target according to the comparative example manufactured by the process shown in FIG.
- the composition of the ingot used in the experiment was Al-0.5% Cu. From the results of FIG. 4, the X-ray intensity ratio of the (111) plane to the (200) plane was 0.63 ⁇ 0.31 in the comparative example, whereas 0.17 ⁇ 0.00 in the present embodiment. It was 15. According to this embodiment, the crystal orientation can be stably oriented toward the (200) plane.
- FIG. 5 shows an example of a tissue photograph.
- FIG. 5A is a photomicrograph of the sputtering target surface of the sputtering target according to this embodiment
- FIG. 5B is a photomicrograph of the sputtering target surface of the sputtering target according to the comparative example.
- the grain boundary has a pentagonal or hexagonal appearance. This is presumably because the crystal grains are deformed to rotate when stress is applied not only in the triaxial direction but also in the oblique direction. Further, it is presumed that with such deformation, nucleus growth during recrystallization is controlled, and as a result, crystal orientation is stabilized.
- FIG. 6 shows another embodiment of the present invention.
- This embodiment demonstrates the processing method which changes the direction of an ingot and repeats the forge process from an oblique direction. This forging process is performed hot or warm, and the details of each process are the same as those in the first embodiment described above, and therefore, redundant description is omitted here.
- the upper surface (indicated by hatching in the figure) of the cylindrical ingot 30 is oriented in the horizontal direction, and stress is applied in the z-axis direction (height direction) and in a plane direction perpendicular thereto.
- stress is applied in the z-axis direction (height direction) and in a plane direction perpendicular thereto.
- compressive stress is applied to each opposite side and diagonal of the produced rectangular parallelepiped ingot 30 to cause a deformation in an oblique direction with respect to the z-axis direction.
- each side surface of the ingot is compressed and deformed to produce a cylindrical ingot 31.
- the upper surface of the ingot 31 (indicated by hatching in the figure) is directed in the vertical direction and the above operation is repeated again. That is, a compressive stress is applied to a cylindrical ingot 31 in a plane direction orthogonal to the z-axis direction to produce a rectangular parallelepiped ingot 31, and a compressive stress is applied to each opposite side and diagonal of the ingot 31. , Causing deformation in an oblique direction with respect to the z-axis direction.
- the ingot 31 is deformed into a disk shape to obtain a molded body 32.
- This step may be performed cold.
- a desired sputtering target is obtained by performing predetermined heat treatment and performing necessary machining.
- a sputtering target having the same characteristics as those of the first embodiment described above can be manufactured.
- the forging process in the oblique direction is repeatedly performed while changing the direction of the ingot, it is possible to further refine and uniform the crystal grains.
- the cold forging process (ST3a) and the heat treatment process (ST3b) are performed after the second hot forging process (ST2b) from the oblique direction.
- the hot forging step (ST3c) is performed to simultaneously perform rolling into a plate shape and recrystallization heat treatment. May be.
- the initial shape of the ingot when performing the second hot forging (ST2b) is a quadrangular column.
- the shape is not limited to this, and may be a cylinder or other polygonal column. It may be.
Abstract
Description
これにより、直方形状のインゴットに対して、その縦、横及び高さ方向だけでなく、斜め方向にも容易に辷り変形を生じさせることができる。
これにより、粒子サイズの更なる緻密化を図ることが可能となる。
図1は、本発明の一実施形態に係るスパッタリングターゲットの製造方法を示す工程図である。図2は、各工程におけるインゴットの変形の様子を示す概略図である。
本実施形態では、インゴット10としてAlを主体とする結晶性合金が用いられる。アルミニウム合金としては、Al-Cu合金、Al-Si合金、Al-Si-Cu合金などが適用可能である。また、インゴット10の構成金属はアルミニウム及びその合金に限られず、例えば、タンタル、チタン、銅等の純金属又はこれらの何れかを主成分とする合金が適用可能である。
第1の熱間鍛造工程ST2aでは、インゴット10は円柱形状から直方体形状に変形される(図2(b))。この工程では、250~420℃に加熱されたインゴット10に対して、高さ方向であるz軸方向(第1の軸方向)に沿って圧縮応力を印加する。これとともに、z軸と直交するxy平面方向に応力を印加することで、円柱形状のインゴット10から直方体形状のインゴット11を作製する(図2(b))。
第2の熱間鍛造工程ST2bでは、直方形状のインゴット片の対角又は対辺の間で当該インゴット片12を圧縮変形させる。すなわち、図2(c)に示すように、例えばインゴット片12の長辺方向をz軸方向に向けたときに、z軸と平行な方向に関して斜めに交差する軸方向(例えばc11、c12、c21、c22)に沿って応力を印加する。このときの処理温度は、第1の熱間鍛造工程と同様に、例えば、250~420℃とすることができる。
冷間鍛造工程ST3aでは、円柱形状のインゴット片14が図2(f)に示すような円盤形状の成形体15に変形される。成形体15は、インゴット片14をz軸方向に圧縮変形させることで形成される。成形体15の大きさは特に限定されず、例えば、直径が360mm、厚みが30mmである。成形体15の作製には、例えば、型打ち鍛造法や圧延法を採用することができる。処理温度は特に限定されず、例えば室温とすることができる。
熱処理工程ST3bは、第1及び第2の鍛造工程ST2a,ST2bを経て作製されたインゴット片15を再結晶温度以上の所定の温度に所定時間加熱することで、成形体15の内部組織を再結晶化させる工程である。処理温度は、例えば、280℃以上350℃以下の温度とされ、処理時間は例えば1時間とされる。
図6は、本発明の他の実施形態を示している。本実施形態では、インゴットの向きを変えて、斜め方向からの鍛造処理を繰り返す処理方法について説明する。この鍛造処理は熱間又は温間で実施され、各工程の詳細は上述の第1の実施形態と同様であるので、ここでは重複する説明を省略する。
15、31…成形体
Claims (5)
- 第1の軸方向及び前記第1の軸方向と直交する平面方向に応力を加えることで、金属のインゴットを鍛造し、
前記第1の軸方向と平行な方向に斜めに交差する第2の軸方向に応力を加えることで、前記インゴットをさらに鍛造し、
前記インゴットをその再結晶温度以上の温度で加熱処理する
スパッタリングターゲットの製造方法。 - 請求項1に記載のスパッタリングターゲットの製造方法であって、
前記第1の軸方向と直交する平面方向に応力を加える工程は、前記インゴットを円柱形状から直方体形状に変形させることを含み、
前記第2の軸方向に応力を加える工程は、前記直方体形状のインゴットの対辺又は対角の間で前記インゴットを圧縮変形させることを含む
スパッタリングターゲットの製造方法。 - 請求項2に記載のスパッタリングターゲットであって、さらに、
前記第1の軸方向と平行な方向に斜めに交差する、前記第2の軸方向とは非平行な第3の軸方向に応力を加えることで、前記インゴットを鍛造する
スパッタリングターゲットの製造方法。 - 請求項1に記載のスパッタリングターゲットの製造方法であって、
前記金属は、タンタル、チタン、アルミニウム、銅又はこれらの何れかを主成分とする合金である
スパッタリングターゲットの製造方法。 - 金属で構成された板状のターゲット本体と、
前記ターゲット本体の表面を形成し、70μm以下の平均結晶粒径と、(200)面に対する(111)面のX線強度比が0.3以下である結晶方位とを有する被スパッタ面と
を具備するスパッタリングターゲット。
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CN201080002764.4A CN102171380B (zh) | 2009-08-12 | 2010-08-10 | 溅射靶的制造方法 |
DE112010003274T DE112010003274T5 (de) | 2009-08-12 | 2010-08-10 | Verfahren zur Herstellung eines Sputtertargets sowie Sputtertarget |
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CN115341161A (zh) * | 2022-08-22 | 2022-11-15 | 宁波江丰电子材料股份有限公司 | 一种铜铝合金靶材及其制备方法与应用 |
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KR20110042216A (ko) | 2011-04-25 |
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DE112010003274T5 (de) | 2012-12-27 |
JP5433684B2 (ja) | 2014-03-05 |
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JPWO2011018895A1 (ja) | 2013-01-17 |
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