JP2009500286A - 焼成された耐火セラミック生成物 - Google Patents
焼成された耐火セラミック生成物 Download PDFInfo
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- JP2009500286A JP2009500286A JP2008520724A JP2008520724A JP2009500286A JP 2009500286 A JP2009500286 A JP 2009500286A JP 2008520724 A JP2008520724 A JP 2008520724A JP 2008520724 A JP2008520724 A JP 2008520724A JP 2009500286 A JP2009500286 A JP 2009500286A
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- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
- C04B2235/9669—Resistance against chemicals, e.g. against molten glass or molten salts
- C04B2235/9684—Oxidation resistance
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
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- Y10T428/249921—Web or sheet containing structurally defined element or component
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
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- Y10T428/249921—Web or sheet containing structurally defined element or component
- Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
- Y10T428/249967—Inorganic matrix in void-containing component
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/249921—Web or sheet containing structurally defined element or component
- Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
- Y10T428/249967—Inorganic matrix in void-containing component
- Y10T428/24997—Of metal-containing material
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/249921—Web or sheet containing structurally defined element or component
- Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
- Y10T428/249975—Void shape specified [e.g., crushed, flat, round, etc.]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/249921—Web or sheet containing structurally defined element or component
- Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
- Y10T428/249978—Voids specified as micro
Abstract
Description
(1)ケイ酸ジルコニウムを焼結し、続いて、粉砕し、仮焼成し、粉砕された生成物は、続いて結合剤を添加しながらモールドし、再度焼成する。この多段階とその結果としての時間消費及び高価な製造プロセスは、欠点である。これらの生成物は、ガラス産業での使用(加熱炉分野のライニング)において密度が十分ではなく、耐食性が十分ではない。
(2)モールドされた部品は、ZrSiO4の懸濁液から鋳造される。このような生成物は、十分な生成物特性を示さない。特に、熱衝撃抵抗などの機械的特性は、満足のいくものではないことが頻繁である。
できるだけ低い気孔率、できるだけ低い開放気孔率の割合、高い嵩密度。
(1)化学組成とは別に、焼成生成物の微小構造は、特に、決定的な役割を果たす。結果として、気孔サイズ分布に加えて気孔率及び気孔サイズを最適化する試みが行われた。
(2)本発明による生成物を製造する原料は、それらを微細に分割することができるように多量に処理され、続いて粒状に形成された。
焼成中(焼成工程)、構造物の形成は、個々の顆粒が消失して起こる。しかしながら、元の粒状構造物は、焼成生成物内にさえも依然としてほとんど認識することができる。これに関連して、特に顆粒(元の)間の領域で作られた構造物は、生成物の特性(特にブリックなどのモールドされた生成物の生成物特性)に特定の影響を与えることができる。
(1)2から30体積%の開放気孔率、
(2)その開放気孔率の半分超は、一方で、その最大直径が15μmであり、他方で、その最大値がその最小値の10倍以下である気孔サイズ区間(interval)内にある気孔からなる。
−ケイ酸ジルコニウム(ZrSiO4)、
−ZrSiO4+ZrO2[80:20から98:2]、
−Al2O3、
−Al2O3+ZrO2[75:25から98:2]、
−Cr2O3、
−Cr2O3+ZrO2[80:20から96:4]、
−Cr2O3+TiO2+ZrO2[80:10:10から94:4:2]、
−MgO+Cr2O3[70:30から30:70]、
−MgO、
−MgO+Al2O3[90:10から10:90]、
−Al2O3+SiO2[72:28から78:22]、
の生成物を含む。
−10μm未満の粒子破片を30重量%含む、30μm未満の粒子破片を有するケイ酸ジルコニウム粉末、
−10μm以下の粒子サイズを有するケイ酸ジルコニウム粉末。
ZrO2:62から65、
SiO2:32から34、
Al2O3:0.5から1.5、
TiO2:0.5から2、
HfO2:0.6から1.5、
Y2O3:0.1から0.5、
BaO:0.03から0.3、
P2O5:0.01から0.05、
Fe2O3:0.01から0.1。
嵩密度:3.8g/cm3、
開放気孔率:17体積%。
嵩密度:4.1g/cm3、
開放気孔率:9体積%、
または、
嵩密度:4.3g/cm3、
開放気孔率:5体積%。
Claims (14)
- 焼成された耐火セラミック生成物であって、その構造物が、
(a)2から30体積%の開放気孔率を有し、
(b)最大直径が15μmである気孔からなる前記開放気孔率の半分超は、これらの気孔が、最大値が最小値の10倍以下である気孔サイズの区間内にある、焼成された耐火セラミック生成物。 - 前記開放気孔率の半分超は、10μm以下の直径を有する気孔からなる、請求項1に記載の生成物。
- 前記開放気孔率の半分超は、5μm以下の直径を有する気孔からなる、請求項1に記載の生成物。
- 前記開放気孔率の半分超は、0.5μm以上の直径を有する気孔からなる、請求項1に記載の生成物。
- 前記開放気孔率の半分超は、1μm以上の直径を有する気孔からなる、請求項1に記載の生成物。
- 前記開放気孔率の60%超は、10μm以下の直径を有する気孔からなる、請求項1に記載の生成物。
- 前記気孔は、最大値が最小値の7倍以下である気孔サイズの区間内にある、請求項1に記載の生成物。
- 前記開放気孔率は、2から25体積%まで達し、特に、5から18体積%まで達する、請求項1に記載の生成物。
- 前記生成物の構造物は、90質量%超の量までの以下の群の材料の少なくとも1つからなる、請求項1に記載の生成物。
(a)ZrSiO4、
(b)ZrSiO4+ZrO2、
(c)Al2O3、
(d)Al2O3+ZrO2、
(e)MgO、
(f)MgO+Al2O3、
(g)Cr2O3+ZrO2、
(h)Cr2O3、
(i)Cr2O3+TiO2+ZrO2、
(j)Al2O3+SiO2。 - 前記生成物の構造物は、焼成中にインサイチュで形成されるZrO2粒子を示す、請求項1に記載の生成物。
- 前記生成物の構造物は、単斜晶構造物内にZrO2を有する、請求項1に記載の生成物。
- 前記生成物の構造物は、スリットタイプの気孔が少なくとも部分的に延長し、その長さ及び幅がそれらの高さに比べて少なくとも7倍大きい表面に焼結された顆粒タイプの構造物によって特徴付けられる、請求項1に記載の生成物。
- 前記スリットタイプの気孔は、前記開放気孔率の全体の5から20%を構成する、請求項12に記載の生成物。
- 3.2g/cm3超の嵩密度、特に3.8g/cm3超の嵩密度を有する請求項1に記載の生成物。
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DE200510032254 DE102005032254B4 (de) | 2005-07-11 | 2005-07-11 | Gebranntes, feuerfestes Zirkonprodukt |
PCT/EP2006/002622 WO2007006350A1 (de) | 2005-07-11 | 2006-03-22 | Gebranntes, keramisches, feuerfestes produkt |
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JP (1) | JP5020951B2 (ja) |
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WO2007006350A1 (de) | 2007-01-18 |
JP5020951B2 (ja) | 2012-09-05 |
CN101263093A (zh) | 2008-09-10 |
ES2377879T3 (es) | 2012-04-02 |
KR20080033263A (ko) | 2008-04-16 |
KR100935054B1 (ko) | 2009-12-31 |
BRPI0613532A2 (pt) | 2011-01-18 |
US7767292B2 (en) | 2010-08-03 |
EP1863745A1 (de) | 2007-12-12 |
CN101263093B (zh) | 2012-11-07 |
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EP1863745B1 (de) | 2011-12-28 |
ATE539042T1 (de) | 2012-01-15 |
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