JP6446538B2 - 薄膜部品の金属被覆、その製造方法及びスパッタリングターゲット - Google Patents
薄膜部品の金属被覆、そ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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- JP6446538B2 JP6446538B2 JP2017509750A JP2017509750A JP6446538B2 JP 6446538 B2 JP6446538 B2 JP 6446538B2 JP 2017509750 A JP2017509750 A JP 2017509750A JP 2017509750 A JP2017509750 A JP 2017509750A JP 6446538 B2 JP6446538 B2 JP 6446538B2
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- metal coating
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- sputtering target
- based alloy
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- 229910052751 metal Inorganic materials 0.000 title claims description 120
- 239000002184 metal Substances 0.000 title claims description 120
- 238000005477 sputtering target Methods 0.000 title claims description 88
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- 238000000034 method Methods 0.000 claims description 41
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- 238000001465 metallisation Methods 0.000 claims description 17
- 239000000758 substrate Substances 0.000 claims description 17
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- 229910016027 MoTi Inorganic materials 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 229910052779 Neodymium Inorganic materials 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000002730 additional effect Effects 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
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- 238000000889 atomisation Methods 0.000 description 1
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- 238000009616 inductively coupled plasma Methods 0.000 description 1
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Classifications
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- 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
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- C—CHEMISTRY; METALLURGY
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- 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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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
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- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/045—Alloys based on refractory metals
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- C22C—ALLOYS
- C22C27/00—Alloys based on rhenium or a refractory metal not mentioned in groups C22C14/00 or C22C16/00
- C22C27/04—Alloys based on tungsten or molybdenum
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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
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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
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
- C23C14/14—Metallic material, boron or silicon
- C23C14/16—Metallic material, boron or silicon on metallic substrates or on substrates of boron or silicon
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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
- C23C14/58—After-treatment
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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
- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/02—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
- H01B1/023—Alloys based on aluminium
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/02—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
- H01B1/026—Alloys based on copper
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B5/00—Non-insulated conductors or conductive bodies characterised by their form
- H01B5/14—Non-insulated conductors or conductive bodies characterised by their form comprising conductive layers or films on insulating-supports
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02697—Forming conducting materials on a substrate
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/28—Manufacture of electrodes on semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/268
- H01L21/28008—Making conductor-insulator-semiconductor electrodes
- H01L21/28017—Making conductor-insulator-semiconductor electrodes the insulator being formed after the semiconductor body, the semiconductor being silicon
- H01L21/28026—Making conductor-insulator-semiconductor electrodes the insulator being formed after the semiconductor body, the semiconductor being silicon characterised by the conductor
- H01L21/28035—Making conductor-insulator-semiconductor electrodes the insulator being formed after the semiconductor body, the semiconductor being silicon characterised by the conductor the final conductor layer next to the insulator being silicon, e.g. polysilicon, with or without impurities
- H01L21/28044—Making conductor-insulator-semiconductor electrodes the insulator being formed after the semiconductor body, the semiconductor being silicon characterised by the conductor the final conductor layer next to the insulator being silicon, e.g. polysilicon, with or without impurities the conductor comprising at least another non-silicon conductive layer
- H01L21/28061—Making conductor-insulator-semiconductor electrodes the insulator being formed after the semiconductor body, the semiconductor being silicon characterised by the conductor the final conductor layer next to the insulator being silicon, e.g. polysilicon, with or without impurities the conductor comprising at least another non-silicon conductive layer the conductor comprising a metal or metal silicide formed by deposition, e.g. sputter deposition, i.e. without a silicidation reaction
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/52—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames
- H01L23/522—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames including external interconnections consisting of a multilayer structure of conductive and insulating layers inseparably formed on the semiconductor body
- H01L23/532—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames including external interconnections consisting of a multilayer structure of conductive and insulating layers inseparably formed on the semiconductor body characterised by the materials
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- H01L23/53214—Conductive materials based on metals, e.g. alloys, metal silicides the principal metal being aluminium
- H01L23/53223—Additional layers associated with aluminium layers, e.g. adhesion, barrier, cladding layers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/52—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames
- H01L23/522—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames including external interconnections consisting of a multilayer structure of conductive and insulating layers inseparably formed on the semiconductor body
- H01L23/532—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames including external interconnections consisting of a multilayer structure of conductive and insulating layers inseparably formed on the semiconductor body characterised by the materials
- H01L23/53204—Conductive materials
- H01L23/53209—Conductive materials based on metals, e.g. alloys, metal silicides
- H01L23/53228—Conductive materials based on metals, e.g. alloys, metal silicides the principal metal being copper
- H01L23/53238—Additional layers associated with copper layers, e.g. adhesion, barrier, cladding layers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/52—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames
- H01L23/522—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames including external interconnections consisting of a multilayer structure of conductive and insulating layers inseparably formed on the semiconductor body
- H01L23/532—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames including external interconnections consisting of a multilayer structure of conductive and insulating layers inseparably formed on the semiconductor body characterised by the materials
- H01L23/53204—Conductive materials
- H01L23/53209—Conductive materials based on metals, e.g. alloys, metal silicides
- H01L23/53242—Conductive materials based on metals, e.g. alloys, metal silicides the principal metal being a noble metal, e.g. gold
- H01L23/53252—Additional layers associated with noble-metal layers, e.g. adhesion, barrier, cladding layers
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Description
−少なくとも1つのスパッタリングターゲットの準備
−Al及びTi並びに通常の不純物を含有するMo基合金の少なくとも1つの層の蒸着
−少なくとも1つのフォトリソグラフィープロセス及びそれに引き続く少なくとも1つのエッチング工程に依る金属被覆の構造化
−1以上の有機層の適用
−1以上のTCO(透明導電性酸化物)の適用
−(絶縁層、平坦化層、緩衝層)の群から選ばれる1以上の層の適用
−レーザー処理
−保護フィルム又保護ガラスの貼り合わせ
−組み立て
−Mo並びにAl及びTiを含有する粉末混合物の準備
−適切な支持材料上への粉末混合物のコールドガススプレー(CGS)
−金属結合層の適用
−機械的加工
−熱処理工程
−成形工程
−1以上の支持要素へのはんだ付け(結合)
この実施例では、図2aに示す薄膜部品が構築される。
一連の実験において、20原子%のAl及び5原子%のTi(MoAlTi20−5)、25原子%のAl及び5原子%のTi(MoAlTi25−5)並びに25原子%のAl及び10原子%のTi(MoAlTi25−10)を含有するMo基合金からなる層を含有する金属薄膜が製造された。これらの層は、対応する化学組成を有するスパッタリングターゲットから蒸着された。Siに対する拡散障壁としてのMo基合金からなるこれらの層の適合性を試験するために、シリコンウエハー(直径3インチ、厚さ380μm)を、対応するMo基合金からなる層(層3、図2c参照)及びCu層(金属層4、図2c参照)で塗被した。図2cに示す構造を選択した。というのは、層を追加するとCu層の観察が妨げられ得るからである。層厚は、Mo基合金からなる層については50nm、Cu層については200nmである。
コールドガススプレーに適した市販のMo粉末、Al粉末及びTi粉末を、支持材料としてのAl管に、コールドガススプレーによりスプレーした。これらの粉末は、個々のコンテナから輸送された。化学組成は、個々の粉末の輸送速度により設定した。得られた20原子%のAl及び5原子%のTiを含有するスパッタリングターゲットの微細構造は、図7に断面(走査型電子顕微鏡)で示す。この微細構造は、長軸が支持材料の表面に平行に配列した長軸の粒子であり、コールドガススプレーで製造された材料に典型的なものである。コールドガススプレーの結果、スパッタリングターゲットの製造において金属間相は、図8のX線回折パターンに示されるように、全く形成されていない。このパターンは、ブラッグ−ブレンターノ光学系(Bragg−Brentano geometry)においてCuKα放射線を用いるBruker社のD4エンデバー回折計を用いて、記録された。
この実施例においては、図2aに示す薄膜部品が構築された。
2:金属被覆
3:Mo基合金の層
4:Al、Cu、Ag若しくはAu又はこれらの金属に基づく合金の層
5:他の中間層/拡散障壁
6:他の被覆層
Claims (15)
- 薄膜部品用の金属被覆であって、10〜40原子%のAl及び0%を超え15原子%までのTi並びに通常の不純物を含有し、ここでAl及びTiの合計含有量が50原子%を超えないMo基合金からなる少なくとも1つの層を含有することを特徴とする金属被覆。
- 前記金属被覆が350℃まで耐酸化性であることを特徴とする請求項1に記載の金属被覆。
- 前記金属被覆が400℃まで耐酸化性であることを特徴とする請求項1又は2に記載の金属被覆。
- 前記Mo基合金からなる少なくとも1つの層が15〜30原子%のAlを含有することを特徴とする請求項1〜3のいずれか1項に記載の金属被覆。
- 前記Mo基合金からなる少なくとも1つの層が5〜10原子%のTiを含有することを特徴とする請求項1〜4のいずれか1項に記載の金属被覆。
- 前記金属被覆が、更に、Al、Cu、Ag若しくはAu又はこれらの金属に基づく合金からなる少なくとも1つの金属層を含有することを特徴とする請求項1〜5のいずれか1項に記載の金属被覆。
- Mo基合金からなる前記少なくとも1つの層が、基板とは反対側の、Al、Cu、Ag若しくはAu又はこれらの金属に基づく合金からなる金属層の面に適用されていることを特徴とする請求項6に記載の金属被覆。
- 請求項1〜7のいずれか1項に記載の金属被覆の導体トラック又は電極としての使用。
- 薄膜部品用の金属被覆を製造する方法であって、少なくとも下記の工程を有することを特徴とする方法。
−少なくとも1つのスパッタリングターゲットの準備、
−10〜40原子%のAl及び0%を超え15原子%までのTi並びに通常の不純物を含有し、ここでAl及びTiの合計含有量が50原子%を超えないMo基合金の少なくとも1つの層の蒸着、
−少なくとも1つのフォトリソグラフィープロセス及びそれに引き続く少なくとも1つのエッチング工程に依る金属被覆の構造化。 - 10〜40原子%のAl及び0%を超え15原子%までのTi並びに通常の不純物を含有し、Al及びTiの合計含有量が50原子%を超えないMo基合金からなるスパッタリングターゲット。
- X線回折(XRD)によって検出可能な金属間相を如何なる比率でも含有しないことを特徴とする請求項10に記載のスパッタリングターゲット。
- 15〜30原子%のAlを含有することを特徴とする請求項10又は11に記載のスパッタリングターゲット。
- 5〜10原子%のTiを含有することを特徴とする請求項10〜12のいずれか1項に記載のスパッタリングターゲット。
- 硬度が400HV10未満であることを特徴とする請求項10〜13のいずれか1項に記載のスパッタリングターゲット。
- 10〜40原子%のAl及び0%を超え15原子%までのTi並びに通常の不純物を含有し、ここでAl及びTiの合計含有量が50原子%を超えないMo基合金からなるスパッタリングターゲットを製造するための方法であって、少なくとも下記の工程を有することを特徴とする方法。
−Mo並びにAl及びTiを含有する粉末混合物の準備、
−適切な支持材料上への前記粉末混合物のコールドガススプレー(CGS)。
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ATGM302/2014U AT14576U1 (de) | 2014-08-20 | 2014-08-20 | Metallisierung für ein Dünnschichtbauelement, Verfahren zu deren Herstellung und Sputtering Target |
ATGM302/2014 | 2014-08-20 | ||
PCT/AT2015/000106 WO2016025968A1 (de) | 2014-08-20 | 2015-08-10 | Metallisierung für ein dünnschichtbauelement, verfahren zu deren herstellung und sputtering target |
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R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |