WO2001077042A1 - Structure alveolaire ceramique a cordierite presentant une faible dilatation thermique et procede de fabrication de ladite structure - Google Patents
Structure alveolaire ceramique a cordierite presentant une faible dilatation thermique et procede de fabrication de ladite structure Download PDFInfo
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- WO2001077042A1 WO2001077042A1 PCT/JP2001/003002 JP0103002W WO0177042A1 WO 2001077042 A1 WO2001077042 A1 WO 2001077042A1 JP 0103002 W JP0103002 W JP 0103002W WO 0177042 A1 WO0177042 A1 WO 0177042A1
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- thermal expansion
- cordierite
- ceramic honeycomb
- low thermal
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Definitions
- the present invention relates to a low thermal expansion cordierite ceramic honeycomb capable of obtaining a low thermal expansion honeycomb structure and a method for manufacturing the same.
- Japanese Patent Publication No. 5-82343 discloses talc having an average particle size of 5-1OO m, alumina having an average particle size of 2 m or less, and high-purity amorphous silica having an average particle size of 15 / m or less. , porosity: 30- 42%, A-axis thermal expansion coefficient: 0. 3X 10- 6 Zt: less, B axis: 0. 5X
- Cordierite ceramic honeycombs are described. Further, the Kokoku 4 7 0053 JP, with porosity of less 30%, A-axis thermal expansion coefficient: The following 0. 8X 10 one 6 Z, B axis: 1. 0X 10- 6 Zt hereinafter, A cordierite ceramic honeycomb having a cordierite crystal content of 90% or more, and other crystals of mullite and spinel (including saphirin) of 2.5% or less is described. Also, in JP 50- 7561 1 JP, thermal expansion coefficient of 25 - 1. In the temperature range at 1000 1 X 1 o_ 6 z: less than orthorhombic co one Deira as the predominant crystal phase Polycrystalline sintered ceramics consisting of silica (or hexagonal cordierite known as Indialite) are described.
- the porosity is preferably 30% or more for easy loading of the catalyst.
- Body must be free of coarse particles that are larger than the slit width of the base
- low thermal expansion is desired to ensure thermal shock resistance.
- the conventional technology described above has the following problems. That is, fine alumina having an average particle size of 2 m or less has an advantage of reducing thermal expansion.
- coarse particles cannot be removed because the cohesiveness of the particles becomes strong and classification becomes difficult. For this reason, coarse alumina particles clog the slits of the die during honeycomb molding, causing rib defects in the honeycomb.
- cordierite ceramic honeycomb has a drawback of lowering the porosity. While high-purity amorphous silica has the advantage of lowering thermal expansion, it has the disadvantage of lower porosity and higher cost of cordierite ceramic honeycombs than quartz silica. Disclosure of the invention
- An object of the present invention is to solve the above-mentioned problems and to provide a low-thermal-expansion cordierite ceramic honeycomb capable of obtaining a low-thermal-expansion honeycomb structure and a method for manufacturing the same.
- the low thermal expansion cordierite ceramic honeycomb of the present invention has a cordierite crystal phase of 60% or more, an indialite crystal phase of 30% or less, and a sum of cordierite phase and indialite phase of 85%. % Or more.
- the method for producing a cordierite ceramic honeycomb having a low thermal expansion of the present invention comprises the steps of adding a forming aid to a raw material, mixing the raw material batch, extruding the raw material batch, forming, drying, and then firing.
- the present invention controls the crystal generated by controlling the temperature at the time of crystal formation (that is, the rate of temperature decrease from the maximum temperature), thereby reducing the thermal expansion.
- Cordierite has a different phase between orthorhombic cordierite and hexagonal cordierite, ie, indialite.
- the content of cordierite was increased, the thermal expansion was reduced by reducing the content of indialite, and the content of cordierite and indialite was increased from the maximum temperature in the firing step. It has been found that it can be controlled by the rate of cooling down to a specific temperature.
- FIG. 1 is a flowchart showing an example of a method for manufacturing a cordierite ceramic honeycomb of the present invention.
- the fired crystalline phase has a cordierite crystal phase of 60% or more, an indialite crystal phase of 30% or less, and a cordierite crystal phase.
- the sum of the light phase and the indialite phase is 85% or more.
- a low thermal expansion cordierite ceramic honeycomb having such a crystal phase can be obtained according to the following production method.
- FIG. 1 is a flowchart showing an example of the method for manufacturing a cordierite ceramic honeycomb of the present invention.
- the method for manufacturing cordierite ceramic honeycomb of the present invention will be described with reference to FIG. 1.
- the raw material batch consists of, for example, a cordierite-forming raw material consisting of talc, kaolin, calcined kaolin, alumina, aluminum hydroxide, and quartz, and adding and mixing a molding aid such as a water-soluble cellulose derivative, a surfactant, and water. obtain.
- the obtained raw material batch is extruded using a die to form a honeycomb having a cordierite composition. Get the shape.
- the obtained honeycomb formed body is dried to obtain a dried honeycomb body.
- the dried honeycomb body is fired to obtain cordierite ceramic honeycomb.
- a feature of the above-described manufacturing method is that the temperature reduction rate at least from the maximum temperature to 1300 is set to 10 ot: hours or less in the firing step.
- the cordierite crystal phase is increased and the low coefficient of thermal expansion is reduced by reducing the indialite crystal phase by gently controlling the rate of temperature decrease from the maximum temperature in the sintering process to 100 / hour or less.
- a cordierite ceramic honeycomb having the same can be manufactured.
- quartz silica can be used instead of conventional high-purity amorphous silica, and in that case, an increase in porosity and reduction in price can be achieved as compared with the case where high-purity amorphous silica is used. Therefore, it is preferable.
- the reason for using alumina having an average particle size larger than 2 im is to increase the porosity to 30% or more and to prevent mixing of coarse particles that are difficult to classify. Further, it is preferable that the rate of temperature decrease from the maximum temperature to 1250 is 50 hours or less, and the maximum holding temperature is 6 hours or more, because the present invention can be further suitably carried out.
- Cordierite ceramics Ha second cam of the present invention obtained according to the manufacturing method described above, A axis thermal expansion coefficient between 40 and 800 co-one day cordierite ceramic honeycomb is 0. 4X 10- 6 / or less, B-axis thermal expansion coefficient of 0. 6X 10- 6 / less, further, a axis thermal expansion coefficient of the cordierite ceramic honeycomb is less at 0. 3X 10- 6, B-axis thermal expansion coefficient of 0. 5X 10- 6 If the following is satisfied, a good low coefficient of thermal expansion can be obtained.
- the porosity can be set to 30% or more, and easy carrying property can be achieved. Therefore, it can be suitably applied to obtain a honeycomb structure having a cell partition wall thickness of 100 zm or less.
- an actual example will be described.
- the raw materials described in Table 1 below are mixed in a predetermined ratio, and a water-soluble cellulose derivative, a surfactant, and water are added.
- a dried honeycomb body having one dierite composition was obtained.
- the obtained dried honeycomb body was fired.
- the dried honeycomb body was fired at a maximum temperature of 144, 25 using a commercially available power furnace with a programmed function under the firing conditions shown in Table 2 below.
- To 8 and Comparative Examples 21 to 24 were obtained.
- the porosity and the coefficient of thermal expansion of each obtained honeycomb fired body were measured, and the crystal phase of each honeycomb fired body was quantified.
- the porosity of the honeycomb fired body was obtained by calculating the total pore volume by a mercury porosimetry and calculating the porosity.
- the true density of the cordierite was 2.52 gZ cm 3 .
- An autopore 9405 manufactured by Micromeritics was used for the measurement.
- the coefficient of thermal expansion of the honeycomb fired body is 40-80 in each direction, where the extrusion direction of the honeycomb is the A-axis direction, the direction perpendicular to the extrusion direction, and the direction parallel to the honeycomb lattice line is the B-axis direction.
- the linear thermal expansion coefficient between 0 was measured.
- the determination of the crystal phase of the honeycomb fired body was performed by a read belt method. Quantitative analysis of cordierite and indialite was performed using corundum powder manufactured by UC as the internal standard substance. Trace amounts of sapphirine, spinel, and mullite were obtained by dissolving the honeycomb sintered body powder with hydrofluoric acid and quantitatively analyzing the residue by the read belt method. For glass, cordierite, Indialite, sapphirine, spinel, and mullite were subtracted from 100% to obtain a glass amount. The results are shown in Table 2 below.
- the present invention since the content of cordierite is increased and the content of indialite is reduced, the low thermal expansion cordierite ceramics having reduced thermal expansion is provided. Honeycomb can be obtained.
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- Chemical & Material Sciences (AREA)
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- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Organic Chemistry (AREA)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
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Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE60126256T DE60126256T2 (de) | 2000-04-07 | 2001-04-06 | Wabenförmige cordieritkeramik mit niedriger thermischer ausdehnung und verfahren zu ihrer herstellung |
EP01919815A EP1270531B1 (en) | 2000-04-07 | 2001-04-06 | Cordierite ceramic honeycomb of low thermal expansion and method for manufacturing the same |
CA002399763A CA2399763C (en) | 2000-04-07 | 2001-04-06 | Low thermal expansion cordierite ceramic honeycomb and method of producing the same |
BR0108502-6A BR0108502A (pt) | 2000-04-07 | 2001-04-06 | Alvéolo cerâmico de cordierita de expansão térmica baixa e processo de produção do mesmo |
JP2001575522A JP4467863B2 (ja) | 2000-04-07 | 2001-04-06 | 低膨張コーディエライトセラミックスハニカムの製造方法 |
AU2001246856A AU2001246856A1 (en) | 2000-04-07 | 2001-04-06 | Cordierite ceramic honeycomb of low thermal expansion and method for manufacturing the same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000-105875 | 2000-04-07 | ||
JP2000105875 | 2000-04-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001077042A1 true WO2001077042A1 (fr) | 2001-10-18 |
Family
ID=18619134
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2001/003002 WO2001077042A1 (fr) | 2000-04-07 | 2001-04-06 | Structure alveolaire ceramique a cordierite presentant une faible dilatation thermique et procede de fabrication de ladite structure |
Country Status (11)
Country | Link |
---|---|
US (1) | US20030165661A1 (ja) |
EP (1) | EP1270531B1 (ja) |
JP (1) | JP4467863B2 (ja) |
KR (1) | KR100481255B1 (ja) |
CN (1) | CN1318347C (ja) |
AU (1) | AU2001246856A1 (ja) |
BR (1) | BR0108502A (ja) |
CA (1) | CA2399763C (ja) |
DE (1) | DE60126256T2 (ja) |
WO (1) | WO2001077042A1 (ja) |
ZA (1) | ZA200206226B (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2005097703A1 (ja) * | 2004-03-31 | 2005-10-20 | Ngk Insulators, Ltd. | ハニカム構造体の製造方法及びハニカム構造体 |
WO2006006667A1 (ja) * | 2004-07-14 | 2006-01-19 | Ngk Insulators, Ltd. | 多孔質ハニカム構造体の製造方法 |
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 |
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Publication number | Priority date | Publication date | Assignee | Title |
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US7132066B2 (en) * | 2003-09-30 | 2006-11-07 | Ngk Insulators, Ltd. | Method for producing honeycomb structure and honeycomb structure |
EP1937607A2 (en) * | 2005-10-19 | 2008-07-02 | Carbo Ceramics Inc. | Low thermal expansion foundry media |
US7744980B2 (en) * | 2005-12-20 | 2010-06-29 | Corning Incorporated | Low CTE cordierite honeycomb article and method of manufacturing same |
US7541303B2 (en) * | 2005-12-21 | 2009-06-02 | Corning Incorporated | High porosity cordierite ceramic honeycomb article and method |
CN101395099A (zh) * | 2006-03-07 | 2009-03-25 | 日本碍子株式会社 | 陶瓷结构体及其制造方法 |
WO2011075285A1 (en) * | 2009-12-16 | 2011-06-23 | Oxane Materials, Inc. | CORDIERITE HAVING AN INCREASED α-CORDIERITE PHASE AND A PROPPANT CONTAINING THE SAME |
EP2646392B1 (en) | 2010-11-29 | 2017-07-12 | Corning Incorporated | Process for control of cordierite filter properties |
CN102276287A (zh) * | 2011-05-31 | 2011-12-14 | 宜兴王子制陶有限公司 | 一种蜂窝陶瓷的制备方法 |
US9005517B2 (en) | 2012-05-16 | 2015-04-14 | Corning Incorporated | Single-fire two-step soak method |
JP6437934B2 (ja) * | 2016-01-08 | 2018-12-12 | 日本碍子株式会社 | 押出速度の調整方法 |
MX2021005769A (es) * | 2018-11-16 | 2021-10-13 | Corning Inc | Cuerpos de cerámica que contienen cordierita, mezclas de la composición de lotes, y métodos para fabricar cuerpos de cerámica que contienen cordierita. |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0278749A1 (en) * | 1987-02-12 | 1988-08-17 | Ngk Insulators, Ltd. | Cordierite honeycomb-structural body and a method for producing the same |
JPH02111659A (ja) * | 1988-10-21 | 1990-04-24 | Mitsui Eng & Shipbuild Co Ltd | 低熱膨張コージェライトの製造方法 |
EP0506301A2 (en) * | 1991-03-29 | 1992-09-30 | Ngk Insulators, Ltd. | Process of producing cordierite honeycomb structure |
JPH0585813A (ja) * | 1991-09-30 | 1993-04-06 | Kyocera Corp | コージライト質セラミツクスの製造法 |
EP0535872A1 (en) * | 1991-09-30 | 1993-04-07 | Ngk Insulators, Ltd. | Process for firing ceramic honeycomb structural bodies |
EP0545008A1 (en) * | 1991-12-06 | 1993-06-09 | Corning Incorporated | Fabrication of low thermal expansion, high porosity cordierite body |
EP0894777A1 (en) * | 1997-07-28 | 1999-02-03 | Corning Incorporated | Method of producing cordierite bodies utilizing substantially reduced firing times |
EP0899248A1 (en) * | 1997-08-29 | 1999-03-03 | Ngk Insulators, Ltd. | Production method of thin wall cordierite honeycomb structure |
JPH11236262A (ja) * | 1998-02-23 | 1999-08-31 | Kyocera Corp | 低熱膨張セラミックス構造部材およびそれを用いた半導体素子製造装置用部材 |
JPH11309380A (ja) * | 1998-02-26 | 1999-11-09 | Nippon Soken Inc | コーディエライトハニカム構造体の製造方法 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3950175A (en) * | 1973-11-05 | 1976-04-13 | Corning Glass Works | Pore size control in cordierite ceramic |
US3979216A (en) * | 1975-03-27 | 1976-09-07 | Gte Sylvania Incorporated | Low thermal expansion coefficient synthetic cordierite-containing ceramic bodies and method for producing same |
US5183608A (en) * | 1992-01-03 | 1993-02-02 | Corning Incorporated | Method of making diesel particulate filters |
JP2981107B2 (ja) * | 1994-03-07 | 1999-11-22 | 日本碍子株式会社 | コージェライトハニカムセラミックスの製造方法 |
US6265334B1 (en) * | 1997-10-24 | 2001-07-24 | Kyocera Corporation | Ceramic sintered product and process for producing the same |
US6077796A (en) * | 1997-12-02 | 2000-06-20 | Corning Incorporated | Low CTE-low porosity cordierite bodies and method of making same |
CN1208280C (zh) * | 1997-12-02 | 2005-06-29 | 康宁股份有限公司 | 膨胀堇青石蜂窝体的制造方法 |
CN1107660C (zh) * | 1998-11-20 | 2003-05-07 | 康宁股份有限公司 | 低热膨胀高强度堇青石结构体的制造 |
WO2000034202A1 (en) * | 1998-12-07 | 2000-06-15 | Corning Incorporated | Fabrication of ultra low thermal expansion cordierite structures |
WO2000040521A1 (en) * | 1998-12-31 | 2000-07-13 | Corning Incorporated | Low sintering temperature cordierite batch and cordierite ceramic produced therefrom |
CA2372368C (en) * | 2000-04-07 | 2007-06-12 | Ngk Insulators, Ltd. | Method for manufacturing cordierite ceramic honeycomb |
JP5468717B2 (ja) * | 2000-06-01 | 2014-04-09 | コーニング インコーポレイテッド | コージェライト体 |
JP4094830B2 (ja) * | 2000-11-24 | 2008-06-04 | 日本碍子株式会社 | 多孔質ハニカムフィルター及びその製造方法 |
-
2001
- 2001-04-06 AU AU2001246856A patent/AU2001246856A1/en not_active Abandoned
- 2001-04-06 CN CNB018057527A patent/CN1318347C/zh not_active Expired - Lifetime
- 2001-04-06 EP EP01919815A patent/EP1270531B1/en not_active Expired - Lifetime
- 2001-04-06 CA CA002399763A patent/CA2399763C/en not_active Expired - Fee Related
- 2001-04-06 DE DE60126256T patent/DE60126256T2/de not_active Expired - Lifetime
- 2001-04-06 JP JP2001575522A patent/JP4467863B2/ja not_active Expired - Lifetime
- 2001-04-06 BR BR0108502-6A patent/BR0108502A/pt not_active Application Discontinuation
- 2001-04-06 US US10/204,133 patent/US20030165661A1/en not_active Abandoned
- 2001-04-06 WO PCT/JP2001/003002 patent/WO2001077042A1/ja active IP Right Grant
- 2001-04-06 KR KR10-2002-7010147A patent/KR100481255B1/ko active IP Right Grant
-
2002
- 2002-08-05 ZA ZA200206226A patent/ZA200206226B/en unknown
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0278749A1 (en) * | 1987-02-12 | 1988-08-17 | Ngk Insulators, Ltd. | Cordierite honeycomb-structural body and a method for producing the same |
JPH02111659A (ja) * | 1988-10-21 | 1990-04-24 | Mitsui Eng & Shipbuild Co Ltd | 低熱膨張コージェライトの製造方法 |
EP0506301A2 (en) * | 1991-03-29 | 1992-09-30 | Ngk Insulators, Ltd. | Process of producing cordierite honeycomb structure |
JPH0585813A (ja) * | 1991-09-30 | 1993-04-06 | Kyocera Corp | コージライト質セラミツクスの製造法 |
EP0535872A1 (en) * | 1991-09-30 | 1993-04-07 | Ngk Insulators, Ltd. | Process for firing ceramic honeycomb structural bodies |
EP0545008A1 (en) * | 1991-12-06 | 1993-06-09 | Corning Incorporated | Fabrication of low thermal expansion, high porosity cordierite body |
EP0894777A1 (en) * | 1997-07-28 | 1999-02-03 | Corning Incorporated | Method of producing cordierite bodies utilizing substantially reduced firing times |
EP0899248A1 (en) * | 1997-08-29 | 1999-03-03 | Ngk Insulators, Ltd. | Production method of thin wall cordierite honeycomb structure |
JPH11236262A (ja) * | 1998-02-23 | 1999-08-31 | Kyocera Corp | 低熱膨張セラミックス構造部材およびそれを用いた半導体素子製造装置用部材 |
JPH11309380A (ja) * | 1998-02-26 | 1999-11-09 | Nippon Soken Inc | コーディエライトハニカム構造体の製造方法 |
Non-Patent Citations (1)
Title |
---|
See also references of EP1270531A4 * |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005097703A1 (ja) * | 2004-03-31 | 2005-10-20 | Ngk Insulators, Ltd. | ハニカム構造体の製造方法及びハニカム構造体 |
JPWO2005097703A1 (ja) * | 2004-03-31 | 2008-02-28 | 日本碍子株式会社 | ハニカム構造体の製造方法及びハニカム構造体 |
CN100537471C (zh) * | 2004-03-31 | 2009-09-09 | 日本碍子株式会社 | 蜂窝结构体的制造方法及蜂窝结构体 |
JP4745963B2 (ja) * | 2004-03-31 | 2011-08-10 | 日本碍子株式会社 | ハニカム構造体の製造方法及びハニカム成形体 |
WO2006006667A1 (ja) * | 2004-07-14 | 2006-01-19 | Ngk Insulators, Ltd. | 多孔質ハニカム構造体の製造方法 |
US7914728B2 (en) | 2004-07-14 | 2011-03-29 | Ngk Insulators, Ltd. | Method for manufacturing porous honeycomb structure |
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 |
Also Published As
Publication number | Publication date |
---|---|
AU2001246856A1 (en) | 2001-10-23 |
EP1270531B1 (en) | 2007-01-24 |
CN1406214A (zh) | 2003-03-26 |
JP4467863B2 (ja) | 2010-05-26 |
US20030165661A1 (en) | 2003-09-04 |
CN1318347C (zh) | 2007-05-30 |
EP1270531A1 (en) | 2003-01-02 |
CA2399763A1 (en) | 2001-10-18 |
BR0108502A (pt) | 2003-03-18 |
DE60126256D1 (de) | 2007-03-15 |
DE60126256T2 (de) | 2007-10-31 |
KR20020092363A (ko) | 2002-12-11 |
ZA200206226B (en) | 2003-08-05 |
CA2399763C (en) | 2007-03-13 |
EP1270531A4 (en) | 2004-11-17 |
KR100481255B1 (ko) | 2005-04-08 |
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