JP5084155B2 - アルミナ焼結体及びその製造方法、並びに、このアルミナ焼結体を用いた静電チャック及びその製造方法 - Google Patents
アルミナ焼結体及びその製造方法、並びに、このアルミナ焼結体を用いた静電チャック及びその製造方法 Download PDFInfo
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Description
前記の如く、アルミナ原料とバインダーと溶剤を所定時間混合し(ステップS11)、混合物(スラリー)をスクリーニングし、造粒粉末を作成する(ステップS12)。アルミナ原料は、純度が99.5%以上のアルミナ粉体を用いる。このアルミナ粉体の平均粒径は、1μm〜3μmが好ましい。
バインダーを含有したアルミナ粉末を金型を用いて成形しプレートを作成する(ステップS13)。このプレートを以下の焼成条件でホットプレス焼成する(ステップS14)。
下記のアルミナ原料、バインダー及び溶剤をトロンメルにて2時間混合・スクリーニングし、スプレードライヤーを用いて平均粒径100μmの造粒粉を作成した。
バインダー:3重量%のPVA(ポリビニルアルコール)
そして、作成された造粒粉から金型を用いて、下記条件下で直径340mm、厚さ5mmのプレートを作成した。
1100℃から1500℃までは90℃/時間で昇温し、
1600℃かつ窒素雰囲気下で2時間30分焼成し、
1600℃から1200℃までは200℃/時間で降温し、
常温から1600℃を経て1200℃に達するまでの間、プレス圧力を最高温度で100kg/cm2とし、1200℃に達したら圧力を開放した。
表1に、得られた焼結体の特性を示す。表1に示すように、平均結晶粒径は1.5μm、4点曲げ強度は550MPaでσ(標準偏差)は29MPa、残留カーボンの量は0.14重量%であった。
バインダーを混合しなかったこと以外は、実施例1と同様にしてアルミナ焼結体を得た。
バインダーを混合しなかったこと、常圧で焼成したこと以外は、実施例1と同様にしてアルミナ焼結体を得た。
バインダーの成分、量が異なる以外は実施例1と同様にしてアルミナ焼結体を得た。残留カーボンの量は0.05重量%、4点曲げ強度は519MPa(σ:18)であった。このときのバインダーの添加量は、1.1重量%であった。
バインダーの成分、量が異なる以外は実施例1と同様にしてアルミナ焼結体を得た。残留カーボンの量は0.5重量%、4点曲げ強度は592MPa(σ:20)であった。このときのバインダーの添加量は、11重量%であった。
バインダーの成分、量が異なる以外は実施例1と同様にしてアルミナ焼結体を得た。残留カーボンの量は0.03重量%、4点曲げ強度は481MPa(σ:15)であった。このときのバインダーの添加量は、0.7重量%であった。
バインダーの成分、量が異なる以外は実施例1と同様にしてアルミナ焼結体を得た。残留カーボンの量は0.6重量%、4点曲げ強度は310MPa(σ:20)であった。このときのバインダーの添加量は、13重量%であった。
11…第1のアルミナ焼結体(基材)
12…電極
13…第2のアルミナ焼結体
Claims (7)
- 純度が99.5%以上のアルミナ粉体にバインダーを混合し、造粒粉を作成し、作成された造粒粉を金型を用いて成形し、この成形体をホットプレス焼成して得られたアルミナ焼結体であって、
前記アルミナ焼結体中における結晶粒の粒径が1〜3μmであり、
残留カーボン量が0.05重量%以上0.5重量%以下で、かつ、4点曲げ強度が500MPa以上であり、体積抵抗値が1015Ω・cm以上であることを特徴とするアルミナ焼結体。 - 前記造粒粉は、スプレードライヤー法によって作成されたことを特徴とする請求項1に記載のアルミナ焼結体。
- 純度が99.5%以上のアルミナ粉体にバインダーを添加量が1.1〜11重量%となるよう混合し、造粒粉を作成し、作成された造粒粉を金型を用いて成形し、この成形体を残留カーボン量が0.05重量%以上0.5重量%以下となる条件でホットプレス焼成し、アルミナ焼結体中における結晶粒の粒径が1〜3μmであることを特徴とするアルミナ焼結体の製造方法。
- 前記バインダーはポリビニルアルコールであることを特徴とする請求項3に記載のアルミナ焼結体の製造方法。
- 前記造粒粉をスプレードライヤー法によって作成することを特徴とする請求項3又は4に記載のアルミナ焼結体の製造方法。
- 第1のアルミナ焼結体と、
前記第1のアルミナ焼結体の外面の上にスクリーン印刷によって形成された電極と、
前記電極の上及びこの電極が形成された前記外面に、前記電極を覆うように且つ電極を埋設するように、アルミナ粉体及びバインダーを混合して得られたアルミナ造粒粉をホットプレス焼成することによって形成された第2のアルミナ焼結体とを備え、
前記第1のアルミナ焼結体は、前記請求項1又は2に記載されたアルミナ焼結体を用いたことを特徴とする静電チャック。 - 第1のアルミナ焼結体の外面の上に、スクリーン印刷によって電極を形成し、
前記電極の上及びこの電極が形成された前記外面に、前記電極を覆うように且つ電極を埋設するように、アルミナ粉体及びバインダーを混合して得られたアルミナ造粒粉をホットプレス焼成することによって第2のアルミナ焼結体を形成する静電チャックの製造方法であって、
前記第1のアルミナ焼結体は、前記請求項3〜5のいずれか1項に記載された方法によって製造されることを特徴とする静電チャックの製造方法。
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JP5084155B2 true JP5084155B2 (ja) | 2012-11-28 |
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JP (1) | JP5084155B2 (ja) |
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JP4394667B2 (ja) * | 2006-08-22 | 2010-01-06 | 日本碍子株式会社 | ヒータ付き静電チャックの製造方法 |
US20090159007A1 (en) * | 2007-11-14 | 2009-06-25 | Ngk Insulators, Ltd. | Substrate support |
JP5203313B2 (ja) * | 2008-09-01 | 2013-06-05 | 日本碍子株式会社 | 酸化アルミニウム焼結体及びその製法 |
GB201005457D0 (en) * | 2010-03-31 | 2010-05-19 | Isis Innovation | Ceramic materials |
CN102834913B (zh) * | 2010-07-26 | 2016-01-06 | 京瓷株式会社 | 静电吸盘 |
JP6159982B2 (ja) * | 2012-06-28 | 2017-07-12 | 日本特殊陶業株式会社 | 静電チャックの製造方法 |
JP6277015B2 (ja) * | 2014-02-28 | 2018-02-07 | 株式会社日立ハイテクノロジーズ | プラズマ処理装置 |
WO2015169929A2 (en) * | 2014-05-07 | 2015-11-12 | Morgan Advanced Ceramics, Inc | Improved method for manufacturing large co-fired articles |
JP6373212B2 (ja) * | 2015-03-26 | 2018-08-15 | 日本碍子株式会社 | アルミナ焼結体の製法及びアルミナ焼結体 |
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DE2314442A1 (de) | 1973-03-23 | 1974-10-03 | Rosenthal Stemag Tech Keramik | Verfahren zum herstellen einer hochverschleissfesten al tief 2 o tief 3-keramik |
US5242298A (en) | 1988-04-09 | 1993-09-07 | Dentaurum J. P. Winkelstroeter Kg | Shaped bodies of transparent, polycrystalline alumina |
JP2759288B2 (ja) | 1989-09-29 | 1998-05-28 | 京セラ株式会社 | 酸化アルミニウム焼結体の製造方法 |
JP3425271B2 (ja) * | 1994-05-23 | 2003-07-14 | 株式会社東芝 | 電力用抵抗体、その製造方法および電力用遮断器 |
JPH1171168A (ja) | 1997-06-26 | 1999-03-16 | Ngk Spark Plug Co Ltd | アルミナ基セラミックス焼結体及びその製造方法 |
JP3177650B2 (ja) * | 1997-11-28 | 2001-06-18 | ファインセラミックス技術研究組合 | 高強度アルミナ質焼結体およびその製造方法 |
JP3023784B1 (ja) | 1998-11-18 | 2000-03-21 | 工業技術院長 | 高強度、高靱性酸化アルミニウム焼結体及びその製造方法 |
JP2000219569A (ja) | 1999-01-29 | 2000-08-08 | Ngk Spark Plug Co Ltd | アルミナ基セラミックス焼結体及びその製造方法 |
JP4447750B2 (ja) * | 1999-09-30 | 2010-04-07 | 日本碍子株式会社 | 窒化アルミニウム焼結体および半導体製造用部材 |
US6648638B2 (en) | 2001-12-28 | 2003-11-18 | 3M Innovative Properties Company | Orthodontic appliances including polycrystalline alumina-based ceramic material, kits, and methods |
JP4230175B2 (ja) | 2002-06-14 | 2009-02-25 | 新日鉄マテリアルズ株式会社 | アルミナ質焼結体及びその製造方法 |
US6858173B2 (en) * | 2003-01-30 | 2005-02-22 | The Regents Of The University Of California | Nanocrystalline ceramic materials reinforced with single-wall carbon nanotubes |
US6875374B1 (en) * | 2003-02-26 | 2005-04-05 | The Regents Of The University Of California | Ceramic materials reinforced with single-wall carbon nanotubes as electrical conductors |
JP2005019480A (ja) * | 2003-06-24 | 2005-01-20 | Taiheiyo Cement Corp | 給電端子の接合構造 |
JP4476701B2 (ja) | 2004-06-02 | 2010-06-09 | 日本碍子株式会社 | 電極内蔵焼結体の製造方法 |
JP4542485B2 (ja) * | 2004-12-14 | 2010-09-15 | 日本碍子株式会社 | アルミナ部材及びその製造方法 |
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US7387977B2 (en) | 2008-06-17 |
EP1702900B1 (en) | 2012-05-02 |
TW200640822A (en) | 2006-12-01 |
KR100758888B1 (ko) | 2007-09-19 |
US20060205585A1 (en) | 2006-09-14 |
KR20060097664A (ko) | 2006-09-14 |
EP1702900A1 (en) | 2006-09-20 |
JP2006282502A (ja) | 2006-10-19 |
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