JP2020004810A - SiC部材およびその製造方法 - Google Patents
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- 239000013078 crystal Substances 0.000 claims abstract description 72
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- 230000002093 peripheral effect Effects 0.000 claims abstract description 31
- 238000000034 method Methods 0.000 claims abstract description 23
- 230000000149 penetrating effect Effects 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 238000000151 deposition Methods 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 abstract description 5
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- 229910010271 silicon carbide Inorganic materials 0.000 description 239
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- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
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- H01J37/32—Gas-filled discharge tubes
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- H01J37/3244—Gas supply means
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- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
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Abstract
Description
(1)全体構成
SiC部材1は、基板3と、第1SiCコート5と、第2SiCコート7と、備える。SiC部材1は、図1と図2に示すように、表側2と裏側4を有し、表側2から裏側4までを貫通する複数の貫通孔13が配列して形成される。本実施形態では、SiC部材1は、半導体製造プロセスにおけるエッチング工程や成膜工程に用いるプラズマ処理装置において、処理容器内に反応ガスや不活性ガスを放出させるシャワーヘッドである。また、貫通孔13は、SiC部材1であるシャワーヘッドの反応ガスや不活性ガスが流通するガス噴射孔である。なお、以下において、裏側4から表側2に向かう方向を、表裏方向Nとする。
図4から図6は、貫通孔13の一つで図2におけるC部分の拡大図である。図4から図6の矢印は、CVD法によってSiC結晶が成長する方向、すなわち、結晶構造の結晶成長の向きを示している。
本願発明の実施の形態は、以上の実施例に限定されることなく、本発明の技術的範囲に属する限り種々の形態をとりうることは言うまでもない。
このような構成であれば、第1SiCコート5は、表裏方向Nに斜交する第1方向Mに結晶成長した結晶構造を有する第1領域20と、表裏方向Nに沿う第2方向Lに結晶成長した結晶構造を有する第2領域22とを含む。また、第2SiCコート7は、表裏方向Nに沿う第2方向Lに結晶成長した結晶構造を有する第3領域24と第4領域26とを含む。これにより、互いに異なる向きに結晶成長した結晶構造を有する第1領域20と第2領域22とを含む第1SiCコート5を、一定の方向に結晶成長した結晶構造を有する第3領域24と第4領域26とを含む第2SiCコート7で被覆することができる。このため、SiC部材1の表面には、一定の方向に結晶成長した結晶構造を有するSiCコートが現れる。この結果、SiC部材1の表面に現れる黒点模様を防止することができ、SiC部材の外観を良好かつ簡易に確保することができる。
7…第2SiCコート、13…貫通孔、15…基準孔、16…第1孔、
18…第2孔、20…第1領域、22…第2領域、24…第3領域、
26…第4領域、28…第1SiC層、30…第2SiC層、32…第5領域
34…第6領域、S1…基板3の表側の表面、S2…第1SiCコートの表側の表面、
S3…第2SiCコートの表側の表面、M…第1方向、L…第2方向
Claims (7)
- 表側と裏側を有するSiC部材であって、
表裏方向に貫通する基準孔を有する基板と、前記基板の少なくとも前記表側の表面に形成された第1SiCコートと、前記第1SiCコートの前記表側の表面に形成された第2SiCコートと、を備え、
前記第1SiCコートは、前記表裏方向において前記基準孔に連なる第1孔と、前記第1孔の内周面を形成し前記第1孔周辺に拡がる第1領域と、前記第1領域と隣り合い前記第1領域の周辺に拡がる第2領域と、を有し、
前記第2SiCコートは、前記表裏方向において前記第1孔に連なる第2孔と、前記第2孔の内周面を形成し前記第2孔周辺に拡がる第3領域と、前記第3領域と隣り合い前記第3領域の周辺に拡がる第4領域と、を有し、
前記第1領域は、前記表裏方向に斜交する第1方向に結晶成長した結晶構造を含み、
前記第2領域、前記第3領域および前記第4領域は、前記表裏方向に沿う第2方向に結晶成長した結晶構造を含む、
SiC部材。 - 前記SiC部材は、前記表裏方向に貫通する複数の貫通孔を備えるシャワーヘッドであり、
前記基準孔、前記第1孔および前記第2孔は、前記複数の貫通孔のうちの一つを形成する、
請求項1に記載のSiC部材。 - 表側と裏側を有するSiC部材の製造方法であって、
前記表裏方向に貫通する基準孔を有する基板を準備する工程と、前記基板の少なくとも前記表側の表面に第1SiCコートを形成する工程と、前記第1SiCコートの前記表側の表面に第2SiCコートを形成する工程と、を備え、
前記第1SiCコートは、前記表裏方向において前記基準孔に連なる第1孔と、前記第1孔の内周面を形成し前記第1孔周辺に拡がる第1領域と、前記第1領域と隣り合い前記第1領域の周辺に拡がる第2領域と、が形成され、
前記第2SiCコートは、前記表裏方向において前記第1孔に連なる第2孔と、前記第2孔の内周面を形成し前記第2孔周辺に拡がる第3領域と、前記第3領域と隣り合い前記第3領域周辺に拡がる第4領域と、が形成され、
前記第1領域は、前記表裏方向に斜交する第1方向に結晶成長した結晶構造を含んで形成され、
前記第2領域、前記第3領域および前記第4領域は、前記表裏方向に沿う第2方向に結晶成長した結晶構造を含んで形成される、
SiC部材の製造方法。 - 前記第1SiCコートを形成する工程は、
前記基板の前記表側の表面にSiC材料を堆積させて第1SiC層を形成する工程と、
前記表裏方向において前記基準孔に連なる第5領域に形成された前記第1SiC層を除去して前記第1孔を形成する工程と、を有し、
前記第2SiCコートを形成する工程は、
前記第1SiCコートの前記表側の表面に前記SiC材料を堆積させて第2SiC層を形成する工程と、前記表裏方向において前記第5領域に連なる第6領域に形成された前記第2SiC層を除去して前記第2孔を形成する工程と、を有する、
請求項3に記載のSiC部材の製造方法。 - 前記第1SiC層は、前記基準孔の内周面を含んで形成され、
前記第5領域は前記基準孔の内周面を含んで形成される、
請求項4に記載のSiC部材の製造方法。 - 前記第1SiC層は、前記基準孔を閉塞して形成される、
請求項4または5のいずれか1項に記載のSiC部材の製造方法。 - 前記第1孔を形成する工程と前記第2孔を形成する工程は、
前記第2SiC層を形成した後、前記第1SiC層の前記第5領域と前記第2SiC層の前記第6領域を除去して形成される、
請求項4から請求項6のいずれか一項に記載のSiC部材の製造方法。
Priority Applications (4)
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JP2018121520A JP6794405B2 (ja) | 2018-06-27 | 2018-06-27 | SiC部材およびその製造方法 |
US16/603,698 US20200243302A1 (en) | 2018-06-27 | 2019-04-24 | SiC MEMBER AND MANUFACTURING METHOD THEREOF |
PCT/JP2019/017416 WO2020003721A1 (ja) | 2018-06-27 | 2019-04-24 | SiC部材およびその製造方法 |
TW108121947A TW202000965A (zh) | 2018-06-27 | 2019-06-24 | SiC構件及其製造方法 |
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WO2024024803A1 (ja) * | 2022-07-28 | 2024-02-01 | 東京エレクトロン株式会社 | 製造方法、および部品 |
Citations (5)
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JPH1012563A (ja) * | 1996-06-21 | 1998-01-16 | Toshiba Ceramics Co Ltd | 高純度CVD−SiC質の半導体熱処理用部材及びその製造方法 |
JP2004307253A (ja) * | 2003-04-07 | 2004-11-04 | New Japan Radio Co Ltd | 半導体基板の製造方法 |
WO2008146918A1 (ja) * | 2007-06-01 | 2008-12-04 | Mitsui Engineering & Shipbuilding Co., Ltd. | プラズマ処理装置用電極の製造方法および再生方法 |
JP2011018894A (ja) * | 2009-06-12 | 2011-01-27 | Tokyo Electron Ltd | プラズマ処理装置用の消耗部品の再利用方法 |
JP2012049220A (ja) * | 2010-08-25 | 2012-03-08 | Mitsui Eng & Shipbuild Co Ltd | 耐プラズマ部材およびその再生方法 |
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- 2018-06-27 JP JP2018121520A patent/JP6794405B2/ja active Active
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- 2019-04-24 WO PCT/JP2019/017416 patent/WO2020003721A1/ja active Application Filing
- 2019-04-24 US US16/603,698 patent/US20200243302A1/en not_active Abandoned
- 2019-06-24 TW TW108121947A patent/TW202000965A/zh unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH1012563A (ja) * | 1996-06-21 | 1998-01-16 | Toshiba Ceramics Co Ltd | 高純度CVD−SiC質の半導体熱処理用部材及びその製造方法 |
JP2004307253A (ja) * | 2003-04-07 | 2004-11-04 | New Japan Radio Co Ltd | 半導体基板の製造方法 |
WO2008146918A1 (ja) * | 2007-06-01 | 2008-12-04 | Mitsui Engineering & Shipbuilding Co., Ltd. | プラズマ処理装置用電極の製造方法および再生方法 |
JP2011018894A (ja) * | 2009-06-12 | 2011-01-27 | Tokyo Electron Ltd | プラズマ処理装置用の消耗部品の再利用方法 |
JP2012049220A (ja) * | 2010-08-25 | 2012-03-08 | Mitsui Eng & Shipbuild Co Ltd | 耐プラズマ部材およびその再生方法 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2024024803A1 (ja) * | 2022-07-28 | 2024-02-01 | 東京エレクトロン株式会社 | 製造方法、および部品 |
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