JP6854241B2 - 多層pvdコーティングを有する切削工具 - Google Patents
多層pvdコーティングを有する切削工具 Download PDFInfo
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Description
−結合層が、陰極真空アーク蒸着(アークPVD)によって堆積され、多層設計を有し、直接重なり合う結合層の層が異なる組成を有し、結合層の多重層がそれぞれ、Ti、V、Cr、Zr、Nb、Mo、Ru、Hf、Ta、W、Al、Si、Y、Li及びB、並びにそれらの固溶体から選択される少なくとも二つの異なる金属の、炭化物、窒化物、酸化物、炭窒化物、オキシカーバイド、カルボキシ窒化物から形成され、
−耐摩耗性保護層が、高出力インパルスマグネトロンスパッタリング(HIPIMS)により堆積されて単層又は多層設計を有し、耐摩耗性保護層の一又は複数の層がそれぞれ、Ti、V、Cr、Zr、Nb、Mo、Ru、Hf、Ta、W、Al、Si、Y、Li及びB、並びにそれらの固溶体から選択される少なくとも二つの異なる金属の、炭化物、窒化物、酸化物、炭窒化物、オキシカーバイド、カルボキシ窒化物から形成される、
工具を提供することにより達成される。
−硬質合金、サーメット、セラミック、スチール又は高速度鋼の基体に、結合層とその上に直接堆積された耐摩耗性保護層とを含む、1μmから20μmの全厚を有する多層コーティングをPVD法により適用する工程
を含み、結合層が、反応性又は非反応性の陰極真空アーク蒸着(アークPVD)により堆積されて多層設計を有し、結合層の互いに直接重なり合う二つの層がそれぞれ異なる組成を有し、結合層の多重層が、Ti、V、Cr、Zr、Nb、Mo、Ru、Hf、Ta、W、Al、Si、Y、Li及びB、並びにそれらの固溶体から選択される少なくとも二つの異なる金属の、炭化物、窒化物、酸化物、炭窒化物、オキシカーバイド、カルボキシ窒化物から形成され、かつ
耐摩耗性保護層が、高出力インパルスマグネトロンスパッタリング(HIPIMS)により堆積されて単層又は多層設計を有し、耐摩耗性保護層の一又は複数の層がそれぞれ、Ti、V、Cr、Zr、Nb、Mo、Ru、Hf、Ta、W、Al、Si、Y、Li及びB、並びにそれらの固溶体から選択される少なくとも二つの異なる金属の、炭化物、窒化物、酸化物、炭窒化物、オキシカーバイド、カルボキシ窒化物から形成される。
1. 5x 34μs/6μs(オン/オフ)
2. 3x 24μs/6μs(オン/オフ)
3. 4x 14μs/8μs(オン/オフ)
4. 50x 10μs/12μs(オン/オフ)
基材:
硬質合金: WC(微粒子)- 10 wt.% Co
ビッカース硬さ: 2000HV
弾性率: 500GPa
この実施例では、実施例1と同じ基材を使用した。多層結合層のために、まず約50nmの厚さを有するTi0.5Al0.5N層を、第1の工程1においてバイアス電位70Vで堆積させ、続いて第2の工程2において、交互に異なる組成Ti0.5Alo.5N及びTi0.33Al0.67Nを有する約6のTiAlN個別層(個別層の厚さ約33nm)からなる約0.2μmの厚さを有する層シーケンスを、バイアス電位100Vで堆積させた。
この実施例では、実施例1と同じ基材を使用した。多層結合層は、実施例2と同様に堆積された。
この比較実施例では、TiAlNの単層耐摩耗性保護層をHIPIMSにより実施例1と同じ基材上に堆積させた。
この比較実施例では、まず0.6μmの厚さを有するTiAlNの単層結合層を、アークPVDにより適用し、2μmの厚さを有するTiAlNの耐摩耗性保護層をその上に、比較実施例1と同様にHIPIMSにより堆積させた。
この比較実施例では、交互に異なる組成Ti0.5Al0.5N及びTi0.33Al0.67Nを有する約500のTiAlNの個別層(個別層の厚さ約5nm)からなる、約2.5μmの厚さを有する層の多層シーケンスが、アークPVDにより堆積されたが、これはその上にさらなる層を有さなかった。上記の実施例及び比較実施例とは異なり、陰極真空アーク蒸着(アークPVD)のためだけに設計された設備、Innova(Balzers、Balzers、Liechtenstein)が使用された。
Claims (12)
- 硬質合金、サーメット、セラミック、スチール又は高速度鋼からなる基材と、PVD法を用いて適用される、1μmから20μmの全厚を有する多層コーティングとを含み、多層コーティングが結合層と結合層の上に直接堆積される耐摩耗性保護層とを含む、
工具であって、
結合層が、陰極真空アーク蒸着(アークPVD)によって堆積され、多層設計を有し、直接重なり合う結合層の層が互いに異なる組成を有し、結合層の多重層がそれぞれ、Ti、V、Cr、Zr、Nb、Mo、Ru、Hf、Ta、W、Al、Si、Y、Li及びB、並びにそれらの固溶体から選択される少なくとも二つの異なる金属の、炭化物、窒化物、酸化物、炭窒化物、オキシカーバイド、カルボキシ窒化物から形成され、
耐摩耗性保護層が、高出力インパルスマグネトロンスパッタリング(HIPIMS)によって堆積され、単層又は多層設計を有し、耐摩耗性保護層の一又は複数の層がそれぞれ、Ti、V、Cr、Zr、Nb、Mo、Ru、Hf、Ta、W、Al、Si、Y、Li及びB、並びにそれらの固溶体から選択される少なくとも二つの異なる金属の、炭化物、窒化物、酸化物、炭窒化物、オキシカーバイド、カルボキシ窒化物から形成され、
多層結合層内部において、ビッカース硬さが基材から耐摩耗性保護層に向かって基材表面に垂直に増大し、多層結合層内部のビッカース硬さが1800HVから3500HV、好ましくは2000HVから3300HVの範囲であることを特徴とする工具。 - 結合層の層がそれぞれ、Ti、Al、Si、及びCrから、好ましくはAlCrN、AlCrSiN、TiAlN、TiAlSiN、及びTiSiNから、特に好ましくはTiAlNから選択される少なくとも二つの異なる金属の窒化物又は炭窒化物から形成されることを特徴とする、請求項1に記載の工具。
- 多層結合層が、重なり合う少なくとも4、好ましくは少なくとも10、かつ最大300、好ましくは最大100、特に好ましくは最大50の層を有することを特徴とする、請求項1又は2に記載の工具。
- 多層結合層内部において、弾性係数(弾性率/ヤング率)が基材から耐摩耗性保護層に向かって基材表面に垂直に増大し、多層結合層内部の弾性係数(弾性率)の値が380GPaから550GPa、好ましくは420GPaから500GPaの範囲であることを特徴とする、請求項1から3のいずれか一項に記載の工具。
- 基材表面に垂直な多層結合層が、0.01μmから1μm、好ましくは0.05μmから0.6μm、特に好ましくは0.1μmから0.4μmの範囲であり、及び/又は単層又は多層耐摩耗性保護層が、0.4μmから20μm、好ましくは1μmから10μm、特に好ましくは1.5μmから5μmの範囲の厚さを有することを特徴とする、請求項1から4のいずれか一項に記載の工具。
- 多層結合層の厚さに対する単層又は多層耐摩耗性保護層の厚さの比が、少なくとも2.0、好ましくは少なくとも2.3、特に好ましくは少なくとも3.5、極めて好ましくは少なくとも4.0であることを特徴とする、請求項1から5のいずれか一項に記載の工具。
- 多層結合層の層が、異なる組成を有するチタンアルミニウム窒化物の交互層を含み、(30〜36):(70〜64)のTi:Alの比の層が、(40〜60):(60〜40)、好ましくは(47〜53):(53〜47)のTi:Alの比を有する層と交互になっていることを特徴とする、請求項1から6のいずれか一項に記載の工具。
- 耐摩耗性保護コーティングが、多層であり、重なり合う少なくとも2、4又は10、かつ重なり合う最大50、100又は300の層を有することを特徴とする、請求項1から7のいずれか一項に記載の工具。
- 好ましくはTiN又は金属Tiの、少なくとも一つのさらなる硬質材料層が、基材と結合層の間に設けられていること、及び/又は少なくとも一つのさらなる硬質材料層、好ましくは一又は複数のTiN、TiCN、ZrNの装飾層が、耐摩耗性保護コーティングの上に設けられていることを特徴とする、請求項1から8のいずれか一項に記載の工具。
- コーティングされた工具の製造方法であって、
−硬質合金、サーメット、セラミック、スチール又は高速度鋼の基体に、結合層とその上に直接堆積された耐摩耗性保護層とを含む、1μmから20μmの全厚を有する多層コーティングをPVD法により適用する工程
を含み、
結合層が、反応性又は非反応性陰極真空アーク蒸着(アークPVD)により堆積されて多層設計を有し、結合層の直接重なり合う二つの層が互いに異なる組成を有し、結合層の多重層が、Ti、V、Cr、Zr、Nb、Mo、Ru、Hf、Ta、W、Al、Si、Y、Li及びB、並びにそれらの固溶体から選択される少なくとも二つの異なる金属の、炭化物、窒化物、酸化物、炭窒化物、オキシカーバイド、カルボキシ窒化物から形成され、かつ
耐摩耗性保護層が、高出力インパルスマグネトロンスパッタリング(HIPIMS)により堆積されて単層又は多層設計を有し、耐摩耗性保護層の一又は複数の層がそれぞれ、Ti、V、Cr、Zr、Nb、Mo、Ru、Hf、Ta、W、Al、Si、Y、Li及びB、並びにそれらの固溶体から選択される少なくとも二つの異なる金属の、炭化物、窒化物、酸化物、炭窒化物、オキシカーバイド、カルボキシ窒化物から形成される、方法であって、
多層結合層の堆積についての堆積パラメータを、多層結合層内部においてビッカース硬さが基材から耐摩耗性保護層に向かって基材表面に垂直に増大し、多層結合層内部のビッカース硬さが1800HVから3500HV、好ましくは2000HVから3300HVの範囲となるように、変化させ、
多層結合層の堆積の間に変化させる堆積パラメータが少なくともバイアス電位を含む、方法。 - 結合層の層がそれぞれ、Ti、Al、Si、及びCrから、好ましくはAlCrN、AlCrSiN、TiAlN、TiAlSiN、及びTiSiNから、特に好ましくはTiAlNから選択される少なくとも二つの異なる金属の窒化物又は炭窒化物から形成されることを特徴とする、請求項10に記載の方法。
- 多層結合層が、重なり合う少なくとも4、好ましくは少なくとも10、かつ最大300、好ましくは最大100、特に好ましくは最大50の層を有することを特徴とする、請求項10又は11に記載の方法。
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PCT/EP2015/074277 WO2016071104A1 (de) | 2014-11-05 | 2015-10-20 | Schneidwerkzeug mit mehrlagiger pvd-beschichtung |
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