JP5411851B2 - 希土類酸化物を含む高孔隙率のセラミック・ハニカム物品およびその製造方法 - Google Patents
希土類酸化物を含む高孔隙率のセラミック・ハニカム物品およびその製造方法 Download PDFInfo
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Description
コージエライト形成無機材料、希土類酸化物源、および孔隙形成剤を液体溶媒と混合して可塑化バッチを形成し、
可塑化バッチを未焼成のハニカム物品へと成形し、
前記未焼成のハニカム物品を焼成して、Mg2Al4Si5O18および0.1重量%〜5.0重量%の希土類酸化物を含むコージエライト型の相、および%P≧45%を含む、多孔質のセラミック・ハニカム物品を形成する、
各工程を含む。
Nb3=(9/16)[(E°RT/ERT)−1]
ここでERTは、試料を加熱する前の室温で測定した弾性率であり、E°RTは仮定上の微小亀裂のない状態における同一試料の弾性率の室温の値である。E°RTの値は、試料を1200℃まで加熱することにより微小亀裂を閉じてアニーリングし;サンプルを室温まで冷却し;冷却の間のT曲線に対するEの直線に近い部分、典型的には約600〜900℃における接線を構築し、ここで試料は、なお大部分が微小亀裂のない状態にあり;室温に戻る接線を外挿する、ことによって決定される。E°RTの値は、25℃で見積もった接線の値とされる接線の傾きΔE/ΔTおよびE°RTの値は、次の関係も満たさなければならない:
ΔE/ΔT =−7.5×10-5(E°RT)
Δαmc=[76.8(IA)3−129.5(IA)2+97.9(IA)−12.8]
+0.6(%Mu+Sp+Sa+Al)−CTE
ここで%(Mu+Sp+Sa+Al)はハニカム内に存在する、ムライト、スピネル、サフィリン、およびコランダムの重量%の合計であり、ここで、IAは軸I比である。Δαmcの値は、基体が所定のIAおよび%二次結晶相について微小亀裂のない状態を示すであろうCTEの値と比較して、セラミック体のCTEが微小亀裂に起因して低くくなるような範囲の尺度である。約4.5未満のΔαmcの値は、微小亀裂の程度が低いことを表す。約2.0未満のΔαmcを有する実施の形態についても記載され、さらに低い微小亀裂の程度を表す。
TSL(℃)=500℃+TSP
ここで、
TSP(℃)=MOR/[(E)(CTE500-900)]
であり、ここでMORは室温で測定した破壊応力であり、Eは室温で測定した弾性率であり、CTE500-900は、加熱の際の500℃〜900℃における平均熱膨張率である。予測される熱衝撃限界(TSL)は、物品の表面温度が約500℃である場合に、物品が破砕することなくその中央内部で耐えうる、最高温度の相対的表示である。一部の実施例では、熱衝撃パラメータ
TSP*=MOR/[(E)(CTE200-1000℃)]
および
TSL*=TSP*+200
も提供される。
PCF=%P/db
ここでdb=(d90−d10)/d50である。
Claims (4)
- セラミック・ハニカム物品であって、
該物品が、少なくとも80重量%のコージエライト・セラミック相、および該セラミックの微細構造内に含まれる0.1から5重量%の希土類酸化物を含み、
%P≧45%である全孔隙率(%P)、
ERatio 1000≦1.05、ここでERatio 1000=E1000℃/ERTである、および
CTE(25〜800℃)≦15×10-7/℃
を有することを特徴とするセラミック・ハニカム物品。 - 1〜40μmのメジアン孔隙径をさらに含むことを特徴とする請求項1記載のセラミック・ハニカム物品。
- 50%≦%P≦70%である全孔隙率(%P)と、
3〜30μmのメジアン孔隙径と、
を有するセラミック・ハニカム物品であって、
該物品が、少なくとも80重量%の、Mg2Al4Si5O18を含むコージエライト型の相、および
0.1〜5.0重量%の希土類酸化物を含み、さらに
ERatio 1000≦1.05、ここでERatio 1000=E1000℃/ERTである、を有するセラミック・ハニカム物品。 - 前記希土類酸化物が、酸化イットリウム、酸化ランタンおよびそれらの組合せからなる群より選択されることを特徴とする請求項3記載のセラミック・ハニカム物品。
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US11/823,580 | 2007-06-28 | ||
| US11/823,580 US8709577B2 (en) | 2007-06-28 | 2007-06-28 | High porosity ceramic honeycomb article containing rare earth oxide and method of manufacturing same |
| PCT/US2008/007940 WO2009005679A1 (en) | 2007-06-28 | 2008-06-26 | High porosity ceramic honeycomb article containing rare earth oxide and method of manufacturing same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2011510890A JP2011510890A (ja) | 2011-04-07 |
| JP5411851B2 true JP5411851B2 (ja) | 2014-02-12 |
Family
ID=39745224
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2010514808A Active JP5411851B2 (ja) | 2007-06-28 | 2008-06-26 | 希土類酸化物を含む高孔隙率のセラミック・ハニカム物品およびその製造方法 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US8709577B2 (ja) |
| EP (1) | EP2160370B1 (ja) |
| JP (1) | JP5411851B2 (ja) |
| CN (1) | CN101687713B (ja) |
| WO (1) | WO2009005679A1 (ja) |
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|---|---|---|---|---|
| US7704296B2 (en) * | 2007-11-27 | 2010-04-27 | Corning Incorporated | Fine porosity low-microcracked ceramic honeycombs and methods thereof |
| US7960009B2 (en) | 2008-02-29 | 2011-06-14 | Corning Incorporated | Dispersion-toughened cordierite for filter and substrate applications |
| US8501296B2 (en) | 2008-02-29 | 2013-08-06 | Corning Incorporated | Stabilized low-microcracked ceramic honeycombs and methods thereof |
| US8530029B2 (en) * | 2008-11-26 | 2013-09-10 | Corning Incorporated | Low thermal mass cordierite bodies and methods for making same |
| US8389101B2 (en) | 2009-05-29 | 2013-03-05 | Corning Incorporated | Lanthanum-containing cordierite body and method of manufacture |
| WO2011149744A1 (en) | 2010-05-25 | 2011-12-01 | Corning Incorporated | Cordierite membrane on a cordierite monolith |
| US9856177B2 (en) | 2010-05-28 | 2018-01-02 | Corning Incorporated | Cordierite porous ceramic honeycomb articles |
| US9334191B2 (en) | 2010-05-28 | 2016-05-10 | Corning Incorporated | Methods for forming ceramic honeycomb articles |
| JP5700631B2 (ja) * | 2010-10-21 | 2015-04-15 | 黒崎播磨株式会社 | コーディエライト質焼結体 |
| WO2012057215A1 (ja) * | 2010-10-26 | 2012-05-03 | 京セラ株式会社 | コージェライト質セラミックスおよびこれを用いた半導体製造装置用部材 |
| US8999224B2 (en) * | 2010-11-30 | 2015-04-07 | Corning Incorporated | Cordierite porous ceramic honeycomb articles with delayed microcrack evolution |
| WO2012115136A1 (ja) * | 2011-02-24 | 2012-08-30 | 京セラ株式会社 | コージェライト質焼結体およびこのコージェライト質焼結体からなる半導体製造装置用部材 |
| US8696962B2 (en) | 2011-09-16 | 2014-04-15 | Corning Incorporated | Methods for reducing defects in ceramic articles and precursors |
| CN103508746A (zh) * | 2012-06-18 | 2014-01-15 | 苏州忠辉蜂窝陶瓷有限公司 | 一种高净化率堇青石蜂窝陶瓷及其制备方法 |
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| CN103145439B (zh) * | 2013-02-21 | 2014-09-17 | 安徽中鼎美达环保科技有限公司 | 一种高热导率、超低膨胀系数的蜂窝多孔陶瓷 |
| US9868670B2 (en) * | 2014-09-05 | 2018-01-16 | Corning Incorporated | High cordierite-to-mullite ratio cordierite-mullite-aluminum magnesium titanate compositions and ceramic articles comprising same |
| JP5922629B2 (ja) * | 2013-09-27 | 2016-05-24 | 日本碍子株式会社 | 多孔質材料及びその製造方法、並びにハニカム構造体 |
| JP6254474B2 (ja) * | 2014-03-31 | 2017-12-27 | 日本碍子株式会社 | 多孔質体,ハニカムフィルタ及び多孔質体の製造方法 |
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| US10029939B2 (en) * | 2015-02-27 | 2018-07-24 | Corning Incorporated | Ceramic composite beads and methods for making same |
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| CN1814567A (zh) * | 2005-02-02 | 2006-08-09 | 翁雄伟 | 堇青石基bsx低膨胀复合新材料蜂窝陶瓷 |
| US7520911B2 (en) | 2005-11-30 | 2009-04-21 | Corning Incorporated | Porous cordierite ceramic honeycomb article with improved strength and method of manufacturing same |
| JP4824769B2 (ja) | 2005-11-30 | 2011-11-30 | コーニング インコーポレイテッド | 細孔径分布の制御された多孔質セラミックハニカムフィルタ、ハニカム未焼成体、そのバッチ混合物および製造方法 |
| US7704296B2 (en) * | 2007-11-27 | 2010-04-27 | Corning Incorporated | Fine porosity low-microcracked ceramic honeycombs and methods thereof |
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- 2008-06-26 CN CN2008800223021A patent/CN101687713B/zh active Active
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| US8709577B2 (en) | 2014-04-29 |
| EP2160370B1 (en) | 2018-05-23 |
| US20120177875A1 (en) | 2012-07-12 |
| EP2160370A1 (en) | 2010-03-10 |
| CN101687713B (zh) | 2013-05-29 |
| JP2011510890A (ja) | 2011-04-07 |
| WO2009005679A1 (en) | 2009-01-08 |
| CN101687713A (zh) | 2010-03-31 |
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