JP6848064B2 - 層間境界をカバーする蒸着層を含む半導体製造用部品及びその製造方法 - Google Patents
層間境界をカバーする蒸着層を含む半導体製造用部品及びその製造方法 Download PDFInfo
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Description
得る。
Claims (21)
- 第1蒸着層と、
前記第1蒸着層上に形成される第2蒸着層と、
前記第2蒸着層上に、前記第1蒸着層と前記第2蒸着層との間の境界線の少なくとも一部分をカバーするように形成される第3蒸着層とを含み、
前記第1蒸着層、前記第2蒸着層、及び第3蒸着層のそれぞれは、SiC又はTaCのうちの1つ以上を含む、層間境界をカバーする蒸着層を含む半導体製造用部品。 - 前記第1蒸着層、第2蒸着層又はこの2つは、複数の層から形成され、
前記第3蒸着層は、前記第1蒸着層、第2蒸着層、又はこの2つの複数の層間の境界線の少なくとも一部分をカバーするように形成される、請求項1に記載の層間境界をカバーする蒸着層を含む半導体製造用部品。 - 前記第1蒸着層及び第2蒸着層、それぞれの結晶粒のサイズは、前記第3蒸着層の結晶粒のサイズよりも大きい、請求項1に記載の層間境界をカバーする蒸着層を含む半導体製造用部品。
- 前記第1蒸着層及び第2蒸着層、それぞれのX線回折スペクトルの111面の回折ピーク強度対比、200面及び220面の回折ピーク強度の和の比は0.9〜3.5である、請求項1に記載の層間境界をカバーする蒸着層を含む半導体製造用部品。
- 前記第3蒸着層のX線回折スペクトルの111面の回折ピーク強度対比、200面及び220面の回折ピーク強度の和の比は0.05〜0.9である、請求項1に記載の層間境界をカバーする蒸着層を含む半導体製造用部品。
- 前記第3蒸着層のX線回折スペクトルの111面の回折ピーク強度対比、311面の回折ピーク強度の比は0.05〜0.3である、請求項1に記載の層間境界をカバーする蒸着層を含む半導体製造用部品。
- 前記第1蒸着層、前記第2蒸着層、及び第3蒸着層の組成は同一である、請求項1に記載の層間境界をカバーする蒸着層を含む半導体製造用部品。
- 前記第3蒸着層の厚さは0.7mm〜2.5mmである、請求項1に記載の層間境界をカバーする蒸着層を含む半導体製造用部品。
- 前記第1蒸着層と第2蒸着層は、透過度値がそれぞれ異なる、請求項1に記載の層間境界をカバーする蒸着層を含む半導体製造用部品。
- 前記第1蒸着層、第2蒸着層又はこの2つの複数の層は、透過度値がそれぞれ異なる、請求項2に記載の層間境界をカバーする蒸着層を含む半導体製造用部品。
- 前記半導体製造用部品はプラズマ処理装置部品として、リング、電極部、及びコンダクターからなる群より選択される少なくともいずれか1つを含む、請求項1に記載の層間境界をカバーする蒸着層を含む半導体製造用部品。
- 母材を備えるステップと、
前記母材上に化学的気相蒸着法で第1蒸着層を形成するステップと、
前記第1蒸着層上に化学的気相蒸着法で第2蒸着層を形成するステップと、
1次加工ステップと、
第3蒸着層を形成するステップと、
2次加工ステップと、
を含む、層間境界をカバーする蒸着層を含む半導体製造用部品の製造方法。 - 前記第1蒸着層を形成するステップと前記第2蒸着層を形成するステップの蒸着ガス流量及び蒸着ガス組成は同一である、請求項12に記載の層間境界をカバーする蒸着層を含む半導体製造用部品の製造方法。
- 前記第3蒸着層を形成するステップの蒸着ガス供給流量は、前記第1蒸着層及び第2蒸着層を形成するステップの蒸着ガス供給流量の30%〜80%である、請求項12に記載の層間境界をカバーする蒸着層を含む半導体製造用部品の製造方法。
- 前記第1蒸着層及び第2蒸着層を形成するステップの蒸着層の形成速度は30μm/hr〜65μm/hrである、請求項12に記載の層間境界をカバーする蒸着層を含む半導体製造用部品の製造方法。
- 前記第3蒸着層を形成するステップの蒸着層の形成速度は、前記第1蒸着層及び第2蒸着層を形成するステップの蒸着層の厚さ形成速度の30%〜80%である、請求項12に記載の層間境界をカバーする蒸着層を含む半導体製造用部品の製造方法。
- 1次加工ステップと第3蒸着層を形成するステップとの間、2次加工ステップの後、又は両方に洗浄ステップをさらに含む、請求項12に記載の層間境界をカバーする蒸着層を含む半導体製造用部品の製造方法。
- 1次加工ステップは、第1蒸着層及び第2蒸着層との間の境界線の少なくとも一部分を含む面を加工する、請求項12に記載の層間境界をカバーする蒸着層を含む半導体製造用部品の製造方法。
- 前記1次加工ステップは、母材を除去するステップを含む、請求項12に記載の層間境界をカバーする蒸着層を含む半導体製造用部品の製造方法。
- 前記2次加工ステップは、前記母材を除去するステップを含む、請求項12に記載の層間境界をカバーする蒸着層を含む半導体製造用部品の製造方法。
- 前記母材は、グラファイト、カーボンブラック、SiC、TaC、及びZrCからなる群から選択された1つ以上を含む、請求項12に記載の層間境界をカバーする蒸着層を含む半導体製造用部品の製造方法。
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