JP6293064B2 - セラミックコーティングを有する熱処理されたセラミック基板及びコートされたセラミックスへの熱処理 - Google Patents
セラミックコーティングを有する熱処理されたセラミック基板及びコートされたセラミックスへの熱処理 Download PDFInfo
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Description
105 炉
115 自動機器レイヤ
120 計算装置
150 プロセス
155、160、165、170 ブロック
202、204、206、212、214、216 顕微鏡写真
222、224、226、228、230、232、234 顕微鏡写真
236、238、240、242、244、246、248 顕微鏡写真
250、252、254、256 顕微鏡写真
302、304 顕微鏡写真
308 元素マップ
310 セラミックコーティング
312 遷移層
314 セラミック基板
320、322、324、326、328、330、332 顕微鏡写真
350、352、354、356 顕微鏡写真
370 ギャップ
Claims (16)
- Al 2 O 3 を含むセラミック基板上にY 4 Al 2 O 9 及び固溶体Y 2 O 3 −ZrO 2 からなるセラミックコーティングを形成するために溶射プロセスを実行するステップであって、前記セラミックコーティングが初期空隙率及び初期量のクラックを有するステップと、
前記セラミック基板及び前記セラミックコーティングを含むセラミック物品を、0.1℃/分から20℃/分のランプレートで、1000℃から1800℃の温度範囲に加熱するステップと、
前記温度範囲内の1以上の温度で、最大24時間の期間、前記セラミック物品を熱処理し、前記セラミックコーティングの空隙率及びクラックの量を減らすステップであって、前記セラミック物品は、前記セラミックコーティングの焼結温度未満で熱処理され、前記セラミックコーティングの焼結を防止し、前記熱処理は、Y 4 Al 2 O 9 及び固溶体Y 2 O 3 −ZrO 2 からなる前記セラミックコーティングを、Al 2 O 3 を含む前記セラミック基板と反応させ、前記セラミック基板と前記セラミックコーティングの間にY 3 Al 5 O 12 を含む遷移層を形成するステップと、
前記セラミック物品を前記熱処理後に前記ランプレートで冷却するステップと、を含む方法。 - 前記セラミックコーティングが、初期粒子数及び初期接着強度をさらに有し、前記熱処理後に、前記セラミックコーティングが、減少した粒子数及び増加した接着強度を有する、請求項1に記載の方法。
- 前記期間及び前記温度範囲は、前記遷移層が1〜2μmの厚さを有するように選択される、請求項1に記載の方法。
- セラミック基板上にセラミックコーティングを形成するために溶射プロセスを実行するステップであって、前記セラミックコーティングが初期空隙率及び初期量のクラックを有するステップと、
前記セラミック基板及び前記セラミックコーティングを含むセラミック物品を、0.1℃/分から20℃/分のランプレートで、1000℃から1800℃の温度範囲に加熱するステップと、
前記温度範囲内の1以上の温度で、最大24時間の期間、前記セラミック物品を熱処理し、前記セラミックコーティングの空隙率及びクラックの量を減らすステップと、
前記セラミック物品を前記熱処理後に前記ランプレートで冷却するステップと、
前記セラミック物品がプラズマエッチプロセスで使用された後に、前記加熱、前記熱処理及び前記冷却を繰り返し、前記プラズマエッチプロセスによって増加した表面欠陥密度を減らすステップと、を備える方法。 - 前記プラズマエッチプロセスによってポリマーが前記セラミック物品上に形成され、酸素の存在下で前記熱処理を繰り返すことによって、前記ポリマーを前記酸素と反応させてガスにし、前記セラミック物品をドライクリーンする、請求項4に記載の方法。
- 前記方法が、真空中、大気の存在下、Arの存在下またはN2の存在下の少なくとも1つで実施される、請求項1に記載の方法。
- 前記セラミック物品は、プラズマエッチャ用のプロセスチャンバーコンポーネントである、請求項1に記載の方法。
- 前記熱処理によって前記セラミックコーティングのグレインサイズが大きくなり、前記期間及び前記温度範囲は目標グレインサイズに到達するように選択される、請求項1に記載の方法。
- Al 2 O 3 を含むセラミック基板と、
前記セラミック基板上のセラミックコーティングであって、Y 4 Al 2 O 9 及び固溶体Y 2 O 3 −ZrO 2 からなる非焼結セラミックコーティングであるセラミックコーティングと、
前記セラミック基板と前記セラミックコーティングとの間の遷移層であって、Y 3 Al 5 O 12 (YAG)を含み、1〜2μmの厚さを有する遷移層と、を含むセラミック物品。 - 前記セラミック物品がプラズマエッチャ用のプロセスチャンバーコンポーネントである、請求項9に記載のセラミック物品。
- プラズマエッチプロセス内で使用されたセラミック基板及びセラミックコーティングを含む熱処理されたセラミック物品を受け取るステップであって、前記セラミックコーティングが初期空隙率及び前記プラズマエッチプロセスに起因する初期量のクラックを有するステップと、
前記セラミック物品を、0.1℃/分から20℃/分のランプレートで、1000℃から1800℃の温度範囲に加熱するステップと、
前記温度範囲内の1以上の温度で、最大24時間の期間、前記セラミック物品を熱処理し、前記セラミックコーティングの空隙率及びクラックの量を減らすステップと、
前記セラミック物品を前記熱処理後に前記ランプレートで冷却するステップとを含み、
前記熱処理の完了後、前記熱処理されたセラミック物品は、前記プラズマエッチプロセスによって引き起こされた表面欠陥密度レベルを下回る新たな表面欠陥密度レベルを有する方法。 - 前記セラミック基板及び前記セラミックコーティングが、それぞれY 2 O 3 、Al 2 O 3 、Y 4 Al 2 O 9 、Y 3 Al 5 O 12 (YAG)、石英、SiC、Si 3 N 4 、AlNまたはSiC−Si 3 N 4 の少なくとも1つから構成され、前記セラミック基板が前記セラミックコーティングと異なる組成を有する、請求項11に記載の方法。
- 前記熱処理されたセラミック物品は、前記セラミックコーティングと前記セラミック基板との間に遷移層を更に含む、請求項11に記載の方法。
- 前記セラミックコーティングは、Y 2 O 3 と、ZrO 2 、Al 2 O 3 、SiO 2 、B 2 O 3 、Er 2 O 3 、Nd 2 O 3 、Nb 2 O 5 、CeO 2 、Sm 2 O 3 、またはYb 2 O 3 のうちの少なくとも1つとを含む固溶体からなる、請求項11に記載の方法。
- 前記プラズマエッチプロセスは、前記熱処理されたセラミック物品上にポリマーを形成させ、酸素の存在下での熱処理は、前記ポリマーを前記酸素と反応させてガスにすることによって前記セラミック物品をドライクリーンする、請求項11に記載の方法。
- 前記熱処理されたセラミック物品は、プラズマエッチャ用のプロセスチャンバーコンポーネントである、請求項11に記載の方法。
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KR20170102370A (ko) | 2017-09-08 |
CN107382376A (zh) | 2017-11-24 |
JP2015512848A (ja) | 2015-04-30 |
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TW201343603A (zh) | 2013-11-01 |
WO2013126466A1 (en) | 2013-08-29 |
US10364197B2 (en) | 2019-07-30 |
CN105492400A (zh) | 2016-04-13 |
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US11279661B2 (en) | 2022-03-22 |
JP2021120346A (ja) | 2021-08-19 |
KR102067108B1 (ko) | 2020-01-16 |
TWI573778B (zh) | 2017-03-11 |
CN108249957B (zh) | 2021-07-16 |
US20130216821A1 (en) | 2013-08-22 |
KR102067107B1 (ko) | 2020-01-16 |
CN107382376B (zh) | 2021-08-17 |
US20160060181A1 (en) | 2016-03-03 |
US20190233343A1 (en) | 2019-08-01 |
CN108249957A (zh) | 2018-07-06 |
JP2019206470A (ja) | 2019-12-05 |
KR20140138190A (ko) | 2014-12-03 |
JP6542854B2 (ja) | 2019-07-10 |
JP6878504B2 (ja) | 2021-05-26 |
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