JP2005179100A - 摺動部材用多孔質セラミック焼結体の製造方法とこれにより得られた摺動部材用多孔質セラミック焼結体並びにこれを用いたシールリング - Google Patents
摺動部材用多孔質セラミック焼結体の製造方法とこれにより得られた摺動部材用多孔質セラミック焼結体並びにこれを用いたシールリング Download PDFInfo
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Abstract
【解決手段】セラミック粉末と、成形助剤と、造孔剤として懸濁重合された非架橋性のポリスチレン、又はスチレン−アクリル共重合体から成る樹脂ビーズとを混合して粉末原料を得る工程と、該粉末原料を成形することで所望形状のセラミック成形体を得る工程と、該セラミック成形体を脱脂、加熱焼結させることで摺部材用多孔質セラミック焼結体を製造する。
【選択図】図1
Description
0.5重量%のシリカを含んだ炭化珪素粉末100重量%に対し、焼結助剤として3.7重量%のアルミナ粉末、0.6重量%のイットリア粉末と、122重量%の水、分散剤として0.3重量%のアンモニア水及び84重量%のウレタンボールとをボールミルに投入後、48時間混合してスラリー化した。
0.5重量%のシリカを含んだ炭化珪素粉末100重量%に対し、焼結助剤として3.7重量%のアルミナ粉末、0.6重量%のイットリア粉末と、122重量%の水、分散剤として0.3重量%のアンモニア水及び84重量%のウレタンボールとをボールミルに投入後、48時間混合してスラリー化した。
0.5重量%のシリカを含んだ炭化珪素粉末100重量%に対し、焼結助剤として表3に示す割合のアルミナ粉末、イットリア粉末と、122重量%の水、分散剤として0.3重量%のアンモニア水及び84重量%のウレタンボールとをボールミルに投入後、48時間混合してスラリー化した。
2:ケーシング
3:密封端面
4:緩衝ゴム
5:シートリング
6:従動リング
7:パッキング
8:コイルスプリング
9:カラー
10:セットスクリュー
Claims (15)
- セラミック粉末と、成形助剤と、造孔剤として懸濁重合された非架橋性のポリスチレン、又はスチレン−アクリル共重合体から成る樹脂ビーズとを混合して粉末原料を得る工程と、該粉末原料を成形することで所望形状のセラミック成形体を得る工程と、該セラミック成形体を脱脂、加熱焼結させることでセラミック焼結体を得る工程とを具備することを特徴とする摺動部材用多孔質セラミック焼結体の製造方法。
- 上記セラミック粉末が炭化珪素質粉末であることを特徴とする請求項1に記載の摺動部材用多孔質セラミック焼結体の製造方法。
- 上記セラミック粉末に焼結助剤としてアルミニウム酸化物、希土類酸化物、珪素酸化物のうち少なくとも1種を添加したことを特徴とする請求項2に記載の摺動部材用多孔質セラミック焼結体の製造方法。
- 上記焼結助剤がセラミック粉末に対して、1〜15重量%であることを特徴とする請求項3に記載の摺動部材用多孔質セラミック焼結体の製造方法。
- 上記成形助剤としてグリセリン、アクリル樹脂、ソルビタン脂肪酸エステルを併用して使用することを特徴とする請求項1〜4のいずれかに記載の摺動部材用多孔質セラミック焼結体の製造方法。
- 上記成形助剤がセラミック粉末に対して、3〜10重量%であることを特徴とする請求項1〜5のいずれかに記載の摺動部材用多孔質セラミック焼結体の製造方法。
- 上記造孔剤として用いる樹脂ビーズが、上記セラミック粉末と成形助剤を合せた100重量%に対して、7〜11重量%配合されていることを特徴とする請求項1〜6のいずれかに記載の摺動部材用多孔質セラミック焼結体の製造方法。
- 上記セラミック成形体の弾性回復率が0.7%以下であることを特徴とする請求項1〜7のいずれかに記載の摺動部材用多孔質セラミック焼結体の製造方法。
- 上記セラミック成形体の熱膨張率が0.7%以下であることを特徴とする請求項1〜8のいずれかに記載の摺動部材用多孔質セラミック焼結体の製造方法。
- 請求項1〜9のいずれかに記載の製造方法を用いて得られることを特徴とする摺動部材用多孔質セラミック焼結体。
- 気孔率が13〜18体積%であるとともに、平均気孔径が20〜40μmであることを特徴とする請求項10に記載の摺動部材用多孔質セラミック焼結体。
- 結晶の平均アスペクト比が3未満であることを特徴とする請求項11に記載の摺動部材用多孔質セラミック焼結体。
- 4点曲げ強度が200MPa以上であることを特徴とする請求項10〜12のいずれかに記載の摺動部材用多孔質セラミック焼結体。
- 請求項10〜13のいずれかに記載の摺動部材用多孔質セラミック焼結体を用いたメカニカルシールにおけるシールリング。
- 自動車の冷却水ポンプに用いることを特徴とする請求項14記載のシールリング。
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JP2003420163A JP4429004B2 (ja) | 2003-12-17 | 2003-12-17 | 摺動部材用多孔質セラミック焼結体の製造方法とこれにより得られた摺動部材用多孔質セラミック焼結体並びにこれを用いたシールリング |
US11/014,215 US20050181197A1 (en) | 2003-12-17 | 2004-12-16 | Porous ceramic sintered body for slidable member, manufacturing method thereof, and seal ring |
ITRM20040619 ITRM20040619A1 (it) | 2003-12-17 | 2004-12-17 | Corpo ceramico sinterizzato poroso per organo scorrevole, procedimento di fabbricazione e anello di tenuta. |
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006036624A (ja) * | 2004-06-23 | 2006-02-09 | Kyocera Corp | 摺動部材用多孔質セラミックスとその製造方法及びこれを用いたメカニカルシールリング |
WO2006117897A1 (ja) * | 2005-04-27 | 2006-11-09 | Kyocera Corporation | 摺動部材用多孔質セラミックス、その製造方法及びメカニカルシールリング |
WO2008053903A1 (fr) * | 2006-10-30 | 2008-05-08 | Kyocera Corporation | Élément coulissant, son procédé de production, et joint d'étanchéité mécanique et bague d'étanchéité mécanique utilisant l'élément |
JP2009516130A (ja) * | 2005-11-15 | 2009-04-16 | メッカノテクニカ ウンブラ エス.ピー.エー. | ポンプのセラミック製機械用シールリングに対する表面処理工程および前述の工程により得られたリング |
JP2013136506A (ja) * | 2011-11-29 | 2013-07-11 | Kyocera Corp | セラミックス顆粒およびセラミック焼結体ならびに防護部材 |
CN115974579A (zh) * | 2022-12-19 | 2023-04-18 | 深圳市吉迩科技有限公司 | 陶瓷粉体、其制备方法及多孔陶瓷基体 |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20100038458A (ko) * | 2007-11-29 | 2010-04-14 | 쿄세라 코포레이션 | 슬라이딩 부재, 메커니컬 시일 링, 메커니컬 시일 및 포셋 밸브 |
US8728835B2 (en) * | 2008-01-15 | 2014-05-20 | Koninklijke Philips N.V. | Light scattering by controlled porosity in optical ceramics for LEDs |
EP2607336B1 (en) * | 2010-08-19 | 2015-06-24 | Hitachi Metals, Ltd. | Manufacturing method for ceramic honeycomb structure |
US9033040B2 (en) | 2011-12-16 | 2015-05-19 | Baker Hughes Incorporated | Use of composite of lightweight hollow core having adhered or embedded cement in cementing a well |
JP6168615B2 (ja) * | 2012-11-28 | 2017-08-02 | 国立大学法人 熊本大学 | 軸封装置及びシール部材並びに水力発電装置 |
DE102017204588B4 (de) * | 2017-03-20 | 2019-03-28 | KSB SE & Co. KGaA | Verbundbauteil |
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BR7302746D0 (pt) * | 1972-05-04 | 1974-07-25 | Harbison Walker Sa | Processo para a obtencao de materiais refratarios com caracteristicas controladas de porosidade e densidade |
GB1569559A (en) * | 1976-09-15 | 1980-06-18 | Cawoods Refractories Ltd | Refractory compositions |
US5395807A (en) * | 1992-07-08 | 1995-03-07 | The Carborundum Company | Process for making silicon carbide with controlled porosity |
US5486496A (en) * | 1994-06-10 | 1996-01-23 | Alumina Ceramics Co. (Aci) | Graphite-loaded silicon carbide |
US5656218A (en) * | 1995-05-19 | 1997-08-12 | Industrial Technology Research Institute | Method for making high performance self-reinforced silicon carbide using a pressureless sintering process |
US6680013B1 (en) * | 1999-04-15 | 2004-01-20 | Regents Of The University Of Minnesota | Synthesis of macroporous structures |
JP4536950B2 (ja) * | 2001-04-03 | 2010-09-01 | 独立行政法人科学技術振興機構 | SiC繊維強化型SiC複合材料のホットプレス製造方法 |
US6716800B2 (en) * | 2002-04-12 | 2004-04-06 | John Crane Inc. | Composite body of silicon carbide and binderless carbon, process for producing such composite body, and article of manufacturing utilizing such composite body for tribological applications |
JP3987022B2 (ja) * | 2003-11-20 | 2007-10-03 | 本田技研工業株式会社 | 三次元網目構造を備えたセラミック成形体の製造方法 |
US7214342B2 (en) * | 2004-07-23 | 2007-05-08 | Schunk Ingenieurkeramik Gmbh | Method of making a composite silicon carbide |
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- 2003-12-17 JP JP2003420163A patent/JP4429004B2/ja not_active Expired - Fee Related
-
2004
- 2004-12-16 US US11/014,215 patent/US20050181197A1/en not_active Abandoned
- 2004-12-17 IT ITRM20040619 patent/ITRM20040619A1/it unknown
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JP2006036624A (ja) * | 2004-06-23 | 2006-02-09 | Kyocera Corp | 摺動部材用多孔質セラミックスとその製造方法及びこれを用いたメカニカルシールリング |
WO2006117897A1 (ja) * | 2005-04-27 | 2006-11-09 | Kyocera Corporation | 摺動部材用多孔質セラミックス、その製造方法及びメカニカルシールリング |
US8158248B2 (en) | 2005-04-27 | 2012-04-17 | Kyocera Corporation | Porous ceramic for slide member, method for preparing the same, and mechanical seal ring |
JP2009516130A (ja) * | 2005-11-15 | 2009-04-16 | メッカノテクニカ ウンブラ エス.ピー.エー. | ポンプのセラミック製機械用シールリングに対する表面処理工程および前述の工程により得られたリング |
WO2008053903A1 (fr) * | 2006-10-30 | 2008-05-08 | Kyocera Corporation | Élément coulissant, son procédé de production, et joint d'étanchéité mécanique et bague d'étanchéité mécanique utilisant l'élément |
US8916488B2 (en) | 2006-10-30 | 2014-12-23 | Kyocera Corporation | Sliding member, manufacturing method thereof, mechanical seal ring using sliding member and mechanical seal using mechanical seal ring |
JP2013136506A (ja) * | 2011-11-29 | 2013-07-11 | Kyocera Corp | セラミックス顆粒およびセラミック焼結体ならびに防護部材 |
CN115974579A (zh) * | 2022-12-19 | 2023-04-18 | 深圳市吉迩科技有限公司 | 陶瓷粉体、其制备方法及多孔陶瓷基体 |
CN115974579B (zh) * | 2022-12-19 | 2023-12-15 | 深圳市吉迩科技有限公司 | 陶瓷粉体、其制备方法及多孔陶瓷基体 |
Also Published As
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JP4429004B2 (ja) | 2010-03-10 |
US20050181197A1 (en) | 2005-08-18 |
ITRM20040619A1 (it) | 2005-03-17 |
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