CN114409434A - 一种低热膨胀钛酸铝陶瓷及其制备方法 - Google Patents
一种低热膨胀钛酸铝陶瓷及其制备方法 Download PDFInfo
- Publication number
- CN114409434A CN114409434A CN202210239643.6A CN202210239643A CN114409434A CN 114409434 A CN114409434 A CN 114409434A CN 202210239643 A CN202210239643 A CN 202210239643A CN 114409434 A CN114409434 A CN 114409434A
- Authority
- CN
- China
- Prior art keywords
- aluminum titanate
- ceramic
- thermal expansion
- mixture
- oxide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000919 ceramic Substances 0.000 title claims abstract description 89
- 229910000505 Al2TiO5 Inorganic materials 0.000 title claims abstract description 64
- AABBHSMFGKYLKE-SNAWJCMRSA-N propan-2-yl (e)-but-2-enoate Chemical compound C\C=C\C(=O)OC(C)C AABBHSMFGKYLKE-SNAWJCMRSA-N 0.000 title claims abstract description 64
- 238000002360 preparation method Methods 0.000 title abstract description 11
- 239000000203 mixture Substances 0.000 claims abstract description 46
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 32
- 238000001125 extrusion Methods 0.000 claims abstract description 17
- 238000005245 sintering Methods 0.000 claims abstract description 17
- 239000002270 dispersing agent Substances 0.000 claims abstract description 16
- 239000004033 plastic Substances 0.000 claims abstract description 16
- 229920003023 plastic Polymers 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000003960 organic solvent Substances 0.000 claims abstract description 15
- 239000003381 stabilizer Substances 0.000 claims abstract description 15
- QVQLCTNNEUAWMS-UHFFFAOYSA-N barium oxide Chemical compound [Ba]=O QVQLCTNNEUAWMS-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000002156 mixing Methods 0.000 claims abstract description 14
- 239000011148 porous material Substances 0.000 claims abstract description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 13
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910052814 silicon oxide Inorganic materials 0.000 claims abstract description 13
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims abstract description 13
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000001035 drying Methods 0.000 claims abstract description 9
- 229910001597 celsian Inorganic materials 0.000 claims abstract description 8
- 238000003756 stirring Methods 0.000 claims abstract description 7
- 238000010438 heat treatment Methods 0.000 claims description 42
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 33
- AYJRCSIUFZENHW-UHFFFAOYSA-L barium carbonate Chemical group [Ba+2].[O-]C([O-])=O AYJRCSIUFZENHW-UHFFFAOYSA-L 0.000 claims description 20
- 238000001816 cooling Methods 0.000 claims description 18
- 239000012752 auxiliary agent Substances 0.000 claims description 13
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 claims description 11
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 claims description 11
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 claims description 11
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 11
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 claims description 11
- 239000005642 Oleic acid Substances 0.000 claims description 11
- 235000019484 Rapeseed oil Nutrition 0.000 claims description 11
- 239000001913 cellulose Substances 0.000 claims description 11
- 229920002678 cellulose Polymers 0.000 claims description 11
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 claims description 11
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid group Chemical group C(CCCCCCC\C=C/CCCCCCCC)(=O)O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 claims description 11
- 244000061456 Solanum tuberosum Species 0.000 claims description 10
- 235000002595 Solanum tuberosum Nutrition 0.000 claims description 10
- 239000000843 powder Substances 0.000 claims description 10
- 239000013078 crystal Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- 235000013312 flour Nutrition 0.000 claims description 3
- 229910052913 potassium silicate Inorganic materials 0.000 claims description 3
- 235000019353 potassium silicate Nutrition 0.000 claims description 3
- KAKVFSYQVNHFBS-UHFFFAOYSA-N (5-hydroxycyclopenten-1-yl)-phenylmethanone Chemical compound OC1CCC=C1C(=O)C1=CC=CC=C1 KAKVFSYQVNHFBS-UHFFFAOYSA-N 0.000 claims description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- 239000002202 Polyethylene glycol Substances 0.000 claims description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 2
- RQPZNWPYLFFXCP-UHFFFAOYSA-L barium dihydroxide Chemical compound [OH-].[OH-].[Ba+2] RQPZNWPYLFFXCP-UHFFFAOYSA-L 0.000 claims description 2
- 229910001863 barium hydroxide Inorganic materials 0.000 claims description 2
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 2
- 239000000292 calcium oxide Substances 0.000 claims description 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 2
- 229910002804 graphite Inorganic materials 0.000 claims description 2
- 239000010439 graphite Substances 0.000 claims description 2
- 239000000395 magnesium oxide Substances 0.000 claims description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 2
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 2
- 229920001223 polyethylene glycol Polymers 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 6
- 235000011187 glycerol Nutrition 0.000 description 10
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 9
- 229910010293 ceramic material Inorganic materials 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000004321 preservation Methods 0.000 description 3
- 235000013339 cereals Nutrition 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 238000001878 scanning electron micrograph Methods 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/06—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by burning-out added substances by burning natural expanding materials or by sublimating or melting out added substances
- C04B38/063—Preparing or treating the raw materials individually or as batches
- C04B38/0635—Compounding ingredients
- C04B38/0645—Burnable, meltable, sublimable materials
- C04B38/068—Carbonaceous materials, e.g. coal, carbon, graphite, hydrocarbons
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/46—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates
- C04B35/462—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates based on titanates
- C04B35/478—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates based on titanates based on aluminium titanates
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/0006—Honeycomb structures
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/06—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by burning-out added substances by burning natural expanding materials or by sublimating or melting out added substances
- C04B38/063—Preparing or treating the raw materials individually or as batches
- C04B38/0635—Compounding ingredients
- C04B38/0645—Burnable, meltable, sublimable materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- 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
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3427—Silicates other than clay, e.g. water glass
- C04B2235/3463—Alumino-silicates other than clay, e.g. mullite
- C04B2235/3481—Alkaline earth metal alumino-silicates other than clay, e.g. cordierite, beryl, micas such as margarite, plagioclase feldspars such as anorthite, zeolites such as chabazite
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- 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
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
- C04B2235/6562—Heating rate
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- 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
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
- C04B2235/6565—Cooling rate
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- 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
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
- C04B2235/6567—Treatment time
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- 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
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/66—Specific sintering techniques, e.g. centrifugal sintering
- C04B2235/661—Multi-step sintering
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- 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
- C04B2235/9607—Thermal properties, e.g. thermal expansion coefficient
Abstract
本发明涉及一种低热膨胀钛酸铝陶瓷及其制备方法。本发明低热膨胀钛酸铝陶瓷中陶瓷体晶相包括钛酸铝相和钡长石相，热膨胀系数小于2×10‑6/℃，陶瓷体孔隙率为30‑50％，陶瓷体中值孔径为10‑20μm，陶瓷体为蜂窝结构。制备方法包括：将氧化铝、氧化钛、氧化硅、氧化钡源和稳定剂混合均匀得到混合物A，混合物A、塑性剂、分散剂、挤压助剂和造孔剂混合均匀得到混合物B；将有机溶剂和水加入到混合物B中搅拌均匀得到泥料C；将泥料C挤压成型得到蜂窝陶瓷生坯；蜂窝陶瓷生坯干燥后烧结得到低热膨胀钛酸铝蜂窝多孔陶瓷。本发明低热膨胀钛酸铝蜂窝多孔陶瓷具有低热膨胀率、高孔隙率、孔径分布均匀和较高的强度。
Description
技术领域
本发明涉及钛酸铝陶瓷，尤其涉及一种低热膨胀钛酸铝陶瓷及其制备方法。
背景技术
钛酸铝陶瓷具有高熔点(1860℃)，低热膨胀系数(0.2～1×10-6/K),以及耐腐蚀性等特点，是目前发现的兼具耐高温和低热膨胀系数的陶瓷材料之一。多孔陶瓷是一种陶瓷内部存在空洞的陶瓷材料，具有大比表面积、低热导率、低密度等优异特点，被广泛应用在高温隔热材料、过滤材料、压电材料等领域。钛酸铝陶瓷由于其兼具耐高温，低热膨胀系数及优异的抗热震性在耐火材料的应用中存在潜力。但是，钛酸铝的中温热不稳定性和低强度使其应用并不广泛。
发明内容
本发明针对现有钛酸铝陶瓷的中温热不稳定性和低强度的问题，提出一种低热膨胀钛酸铝陶瓷及其制备方法，本发明低热膨胀钛酸铝蜂窝多孔陶瓷具有低热膨胀率、高孔隙率、孔径分布均匀、高强度和中温热稳定性。
本发明为解决其技术问题而采用的技术方案是：
一种低热膨胀钛酸铝陶瓷，陶瓷体晶相包括钛酸铝相和钡长石相，热膨胀系数小于2×10-6/℃，陶瓷体孔隙率为30-50％，陶瓷体中值孔径为10-20μm，陶瓷体为蜂窝结构。
所述低热膨胀钛酸铝陶瓷的制备方法，具体步骤如下：
(1)将氧化铝、氧化钛、氧化硅、氧化钡源和稳定剂混合均匀得到混合物A，混合物A、塑性剂、分散剂、挤压助剂和造孔剂混合均匀得到混合物B；
(2)将有机溶剂和水加入到混合物B中搅拌均匀得到泥料C；
(3)将泥料C挤压成型得到蜂窝陶瓷生坯；
(4)蜂窝陶瓷生坯干燥后烧结得到低热膨胀钛酸铝蜂窝多孔陶瓷。
以步骤(1)混合物A总含量为100wt％计，氧化铝40-60wt％，氧化钛30-50wt％，氧化硅2-8wt％，氧化钡1-10wt％，稳定剂1-10wt％。
以步骤(1)混合物A总含量为100wt％计，分散剂1-5wt％，挤压助剂1-5wt％，塑性剂1-5wt％，造孔剂1-60wt％；优选的，分散剂2-3wt％，挤压助剂2-4wt％，塑性剂3-4wt％，造孔剂20-40wt％。
所述步骤(1)稳定剂为氧化镁、氧化铁或氧化钙；
氧化钡源为碳酸钡或氢氧化钡；
塑性剂为纤维素、聚乙二醇、面粉中的一种或多种；优选的，塑性剂为纤维素和/或面粉；
造孔剂为石墨和/或土豆粉；
分散剂为油酸或/和月硅酸钾；
挤压助剂为油酸、月桂酸钾、甘油、菜籽油中的一种或多种；优选的，挤压助剂为甘油和/或菜籽油。
所述步骤(2)有机溶剂为甘油。
以步骤(1)混合物A总含量为100wt％计，有机溶剂2～4wt％，去离子水20～25wt％。
所述步骤(4)烧结的具体方法为
依次以0.5～1℃/min的升温速率从室温升温至150-250℃；以1～1.5℃/min的升温速率升温至850～950℃，保温2-6h；以0.5～1℃/min的升温速率升温至1350℃；以0.3～0.5℃/min升温至1450～1550℃，保温4～8h；以0.5～1℃/min的降温速率降温至1300-1400℃，然后随炉冷却。
在室温升温到150～250℃阶段需要较慢的升温速率，进一步除去在微波干燥过程中未除掉的水分，之后升温速率提高，在850～950℃保温以使陶瓷中有机物完全氧化，升温至钛酸铝的烧结温度后需要较长的保温时间以确保钛酸铝完全合成。
本发明的有益效果：
(1)本发明所需原料价格低廉易得；
(2)本发明制得的钛酸铝蜂窝多孔陶瓷热膨胀系数低，同时具有较高的孔隙率以及孔径。
附图说明
图1为实施例1低热膨胀钛酸铝蜂窝多孔陶瓷XRD图谱；
图2为实施例3低热膨胀钛酸铝蜂窝多孔陶瓷孔径分布；
图3为实施例1-4低热膨胀钛酸铝蜂窝多孔陶瓷材料室温至800℃时的热膨胀曲线图；
图4为实施例4低热膨胀钛酸铝蜂窝多孔陶瓷扫描电镜图。
具体实施方式
下面结合具体实施方式，对本发明作进一步说明。
实施例1：一种低热膨胀钛酸铝陶瓷的制备方法，具体步骤如下：
(1)将氧化铝、氧化钛、氧化硅、碳酸钡和稳定剂(氧化铁)混合均匀得到混合物A，混合物A、塑性剂(纤维素)、分散剂(油酸)、挤压助剂(菜籽油)和造孔剂(土豆粉)混合均匀得到混合物B；其中以步骤(1)混合物A总含量为100wt％计，氧化铝49.04wt％、氧化钛38.46wt％、氧化硅3.85wt％、碳酸钡3.85wt％、稳定剂(氧化铁)4.8wt％，以步骤(1)混合物A总含量为100wt％计，分散剂(油酸)2.42wt％，挤压助剂(菜籽油)3.54wt％，塑性剂(纤维素)3.97wt％，造孔剂(土豆粉)36.27wt％；
(2)将有机溶剂(甘油)和水加入到混合物B中搅拌均匀得到泥料C；以步骤(1)混合物A总含量为100wt％计，有机溶剂3.22wt％，水21.28wt％；
(3)将泥料C挤压成型得到蜂窝陶瓷生坯；
(4)蜂窝陶瓷生坯干燥后烧结得到低热膨胀钛酸铝蜂窝多孔陶瓷，其中烧结的具体方法为
依次以0.8℃/min的升温速率从室温升温至250℃；以1.2℃/min的升温速率升温至850℃，保温4h；以0.6℃/min的升温速率升温至1350℃；以0.4℃/min的升温速率升温至1500℃，保温6h；以0.8℃/min的降温速率降温至1350℃，然后随炉冷却；
在室温升温到250℃阶段需要较慢的升温速率，进一步除去在微波干燥过程中未除掉的水分，在850℃保温4h以使陶瓷中有机物完全氧化，升温1500℃后需要较长的保温时间是以确保钛酸铝完全合成；
本实施例低热膨胀钛酸铝蜂窝多孔陶瓷XRD图谱见图1，从图1可知，XRD图谱中分析可知钛酸铝陶瓷中晶相为钛酸铝相和钡长石相；
本实施例低热膨胀钛酸铝陶瓷体晶相包括钛酸铝相和钡长石相，热膨胀系数为0.7415×10-6/℃，陶瓷体孔隙率为52.55％，陶瓷体中值孔径为13.49μm，陶瓷体为蜂窝结构。
实施例2：一种低热膨胀钛酸铝陶瓷的制备方法，具体步骤如下：
(1)将氧化铝、氧化钛、氧化硅、碳酸钡和稳定剂(氧化铁)混合均匀得到混合物A，混合物A、塑性剂(纤维素)、分散剂(油酸)、挤压助剂(菜籽油)和造孔剂(土豆粉)混合均匀得到混合物B；其中以步骤(1)混合物A总含量为100wt％计，氧化铝57wt％、氧化钛34.4wt％、氧化硅3.44wt％、碳酸钡3.44wt％、稳定剂(氧化铁)1.72wt％，以步骤(1)混合物A总含量为100wt％计，分散剂(油酸)2.36wt％，挤压助剂(菜籽油)3.48wt％，塑性剂(纤维素)3.97wt％，造孔剂(土豆粉)30.50wt％；
(2)将有机溶剂(甘油)和水加入到混合物B中搅拌均匀得到泥料C；以步骤(1)混合物A总含量为100wt％计，有机溶剂(甘油)3.29wt％，水20.18wt％；
(3)将泥料C挤压成型得到蜂窝陶瓷生坯；
(4)蜂窝陶瓷生坯干燥后烧结得到低热膨胀钛酸铝蜂窝多孔陶瓷，其中烧结的具体方法为
依次以0.8℃/min的升温速率从室温升温至250℃；以1.2℃/min的升温速率升温至850℃，保温4h；以0.6℃/min的升温速率升温至1350℃；以0.4℃/min的升温速率升温至1500℃，保温8h；以0.8℃/min的降温速率降温至1350℃，然后随炉冷却；
烧结保温时间对钛酸铝陶瓷晶粒以及微裂纹有影响，延长保温时间可降低钛酸铝陶瓷热膨胀系数；
本实施例低热膨胀钛酸铝陶瓷体晶相包括钛酸铝相和钡长石相，热膨胀系数为0.0869×10-6/℃，陶瓷体孔隙率为43.11％，陶瓷体中值孔径为12.63μm，陶瓷体为蜂窝结构。
实施例3：一种低热膨胀钛酸铝陶瓷的制备方法，具体步骤如下：
(1)将氧化铝、氧化钛、氧化硅、碳酸钡和稳定剂(氧化铁)混合均匀得到混合物A，混合物A、塑性剂(纤维素)、分散剂(油酸)、挤压助剂(菜籽油)和造孔剂(土豆粉)混合均匀得到混合物B；其中以步骤(1)混合物A总含量为100wt％计，氧化铝54.21wt％、氧化钛32.71wt％、氧化硅4.91wt％、碳酸钡4.91wt％、稳定剂(氧化铁)3.26wt％，以步骤(1)混合物A总含量为100wt％计，分散剂(油酸)2.44wt％，挤压助剂(菜籽油)3.36wt％，塑性剂(纤维素)3.86wt％，造孔剂(土豆粉)32.84wt％；
(2)将有机溶剂(甘油)和水加入到混合物B中搅拌均匀得到泥料C；以步骤(1)混合物A总含量为100wt％计，有机溶剂(甘油)3.84wt％，水21.46wt％；
(3)将泥料C挤压成型得到蜂窝陶瓷生坯；
(4)蜂窝陶瓷生坯干燥后烧结得到低热膨胀钛酸铝蜂窝多孔陶瓷，其中烧结的具体方法为
依次以0.8℃/min的升温速率从室温升温至250℃；以1.2℃/min的升温速率升温至850℃，保温4h；以0.6℃/min的升温速率升温至1350℃；以0.4℃/min的升温速率升温至1550℃，保温6h；以0.8℃/min的降温速率降温至1350℃，然后随炉冷却；
根据查阅文献资料烧结温度对钛酸铝的性能有较大影响，提高钛酸铝的烧结温度可降低钛酸铝热膨胀系数，以及提高强度；
低热膨胀钛酸铝蜂窝多孔陶瓷孔径分布见图3，从图2可知，陶瓷中值孔径为20μm左右；
本实施例低热膨胀钛酸铝陶瓷体晶相包括钛酸铝相和钡长石相，热膨胀系数为1.1849×10-6/℃，陶瓷体孔隙率为48.26％，陶瓷体中值孔径为19.96μm，陶瓷体为蜂窝结构。
实施例4：一种低热膨胀钛酸铝陶瓷的制备方法，具体步骤如下：
(1)将氧化铝、氧化钛、氧化硅、碳酸钡和稳定剂(氧化铁)混合均匀得到混合物A，混合物A、塑性剂(纤维素)、分散剂(油酸)、挤压助剂(菜籽油)和造孔剂(土豆粉)混合均匀得到混合物B；其中以步骤(1)混合物A总含量为100wt％计，氧化铝52.49wt％、氧化钛32.67wt％、氧化硅5.01wt％、碳酸钡3.50wt％、稳定剂(氧化铁)6.33wt％，以步骤(1)混合物A总含量为100wt％计，分散剂(月硅酸钾)2.67wt％，挤压助剂(菜籽油)3.64wt％，塑性剂(纤维素)3.79wt％，造孔剂(土豆粉)34.19wt％；
(2)将有机溶剂(甘油)和水加入到混合物B中搅拌均匀得到泥料C；以步骤(1)混合物A总含量为100wt％计，有机溶剂(甘油)3.15wt％，水20.05wt％；
(3)将泥料C挤压成型得到蜂窝陶瓷生坯；
(4)蜂窝陶瓷生坯干燥后烧结得到低热膨胀钛酸铝蜂窝多孔陶瓷，其中烧结的具体方法为
依次以0.8℃/min的升温速率从室温升温至250℃；以1.2℃/min的升温速率升温至850℃，保温4h；以0.6℃/min的升温速率升温至1350℃；以0.4℃/min的升温速率升温至1550℃，保温6h；以0.8℃/min的降温速率降温至1350℃，然后随炉冷却；
本实施例低热膨胀钛酸铝蜂窝多孔陶瓷扫描电镜图见图4，从图4可知，钛酸铝晶粒之间存在明显的微裂纹；
实施例1-4低热膨胀钛酸铝蜂窝多孔陶瓷材料室温至800℃时的热膨胀曲线图见图3，从图3可知，4#热膨胀系数为1.9614×10-6℃-1；
本实施例低热膨胀钛酸铝陶瓷体晶相包括钛酸铝相和钡长石相，热膨胀系数为1.9614×10-6/℃，陶瓷体孔隙率为50.21％，陶瓷体中值孔径为17.98μm，陶瓷体为蜂窝结构；
表1实施例1-4物理性能数据
| 物理性能 | 1# | 2# | 3# | 4# |
| CTE(30-800℃)10<sup>-6</sup>℃<sup>-1</sup> | 0.7415 | 0.0869 | 1.1849 | 1.9614 |
| 强度(垂直于孔道方向) | 1.5249MPa | 1.9538MPa | 1.873MPa | 1.3184MPa |
| 中值孔径 | 13.49μm | 12.63μm | 19.96μm | 17.98μm |
| 孔隙率 | 52.55％ | 43.11％ | 48.26％ | 50.21％ |
| 吸水率 | 37.27％ | 29.36％ | 31.29％ | 36.25％ |
上面结合附图对本发明的具体实施例作了详细说明，但是本发明并不限于上述实施例，在本领域普通技术人员所具备的知识范围内，还可以在不脱离本发明宗旨的前提下作出各种变化。
Claims (8)
1.一种低热膨胀钛酸铝陶瓷，其特征在于：陶瓷体晶相包括钛酸铝相和钡长石相，热膨胀系数小于2×10-6/℃，陶瓷体孔隙率为30-50％，陶瓷体中值孔径为10-20μm，陶瓷体为蜂窝结构。
2.权利要求1所述低热膨胀钛酸铝陶瓷的制备方法，其特征在于，具体步骤如下：
(1)将氧化铝、氧化钛、氧化硅、氧化钡源和稳定剂混合均匀得到混合物A，混合物A、塑性剂、分散剂、挤压助剂和造孔剂混合均匀得到混合物B；
(2)将有机溶剂和水加入到混合物B中搅拌均匀得到泥料C；
(3)将泥料C挤压成型得到蜂窝陶瓷生坯；
(4)蜂窝陶瓷生坯干燥后烧结得到低热膨胀钛酸铝蜂窝多孔陶瓷。
3.根据权利要求2所述低热膨胀钛酸铝陶瓷的制备方法，其特征在于：以步骤(1)混合物A总含量为100wt％计，氧化铝40-60wt％，氧化钛30-50wt％，氧化硅2-8wt％，氧化钡1-10wt％，稳定剂1-10wt％。
4.根据权利要求3所述低热膨胀钛酸铝陶瓷的制备方法，其特征在于：以步骤(1)混合物A总含量为100wt％计，分散剂1-5wt％，挤压助剂1-5wt％，塑性剂1-5wt％，造孔剂1-60wt％。
5.根据权利要求3所述低热膨胀钛酸铝陶瓷的制备方法，其特征在于：步骤(1)稳定剂为氧化镁、氧化铁或氧化钙，氧化钡源为碳酸钡或氢氧化钡，塑性剂为纤维素、聚乙二醇、面粉中的一种或多种，造孔剂为石墨和/或土豆粉，分散剂为油酸和/或月硅酸钾；挤压助剂为油酸、月桂酸钾、甘油、菜籽油中的一种或多种。
6.根据权利要求2所述低热膨胀钛酸铝陶瓷的制备方法，其特征在于：步骤(2)有机溶剂为甘油。
7.根据权利要求2所述低热膨胀钛酸铝陶瓷的制备方法，其特征在于：以步骤(1)混合物A总含量为100wt％计，步骤(2)中有机溶剂2～4wt％，水20～25wt％。
8.根据权利要求2所述低热膨胀钛酸铝陶瓷的制备方法，其特征在于：步骤(4)烧结的具体方法为
依次以0.5～1℃/min的升温速率从室温升温至150-250℃；以1～1.5℃/min的升温速率升温至850～950℃，保温2-6h；以0.5～1℃/min的升温速率升温至1350℃；以0.3～0.5℃/min升温至1450～1550℃，保温4～8h；以0.5～1℃/min的降温速率降温至1300-1400℃，然后随炉冷却。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210239643.6A CN114409434A (zh) | 2022-03-11 | 2022-03-11 | 一种低热膨胀钛酸铝陶瓷及其制备方法 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210239643.6A CN114409434A (zh) | 2022-03-11 | 2022-03-11 | 一种低热膨胀钛酸铝陶瓷及其制备方法 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114409434A true CN114409434A (zh) | 2022-04-29 |
Family
ID=81263806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210239643.6A Pending CN114409434A (zh) | 2022-03-11 | 2022-03-11 | 一种低热膨胀钛酸铝陶瓷及其制备方法 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114409434A (zh) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116496073A (zh) * | 2023-05-16 | 2023-07-28 | 醴陵千汇实业有限公司 | 一种用于杯耳挤压成型坯体泥料 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070259769A1 (en) * | 2005-02-22 | 2007-11-08 | Ellison Adam J G | Aluminum titanate ceramic articles and methods of making same |
| TW200940470A (en) * | 2007-08-28 | 2009-10-01 | Corning Inc | Refractory glass ceramics |
| US20110129640A1 (en) * | 2009-11-30 | 2011-06-02 | George Halsey Beall | Method and binder for porous articles |
| CN105110813A (zh) * | 2015-08-12 | 2015-12-02 | 盐城工学院 | 一种多孔钛酸铝陶瓷的制备方法 |
| CN108724428A (zh) * | 2018-04-27 | 2018-11-02 | 昆明理工大学 | 一种3d打印汽车用蜂窝陶瓷载体的方法 |
-
2022
- 2022-03-11 CN CN202210239643.6A patent/CN114409434A/zh active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070259769A1 (en) * | 2005-02-22 | 2007-11-08 | Ellison Adam J G | Aluminum titanate ceramic articles and methods of making same |
| TW200940470A (en) * | 2007-08-28 | 2009-10-01 | Corning Inc | Refractory glass ceramics |
| US20110129640A1 (en) * | 2009-11-30 | 2011-06-02 | George Halsey Beall | Method and binder for porous articles |
| CN105110813A (zh) * | 2015-08-12 | 2015-12-02 | 盐城工学院 | 一种多孔钛酸铝陶瓷的制备方法 |
| CN108724428A (zh) * | 2018-04-27 | 2018-11-02 | 昆明理工大学 | 一种3d打印汽车用蜂窝陶瓷载体的方法 |
Non-Patent Citations (2)
| Title |
|---|
| 聂达: "钛酸铝蜂窝陶瓷的制备与性能研究" * |
| 聂达: "钛酸铝蜂窝陶瓷的制备与性能研究", 《中国优秀硕士学位论文全文数据库工程科技Ⅰ辑》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116496073A (zh) * | 2023-05-16 | 2023-07-28 | 醴陵千汇实业有限公司 | 一种用于杯耳挤压成型坯体泥料 |
| CN116496073B (zh) * | 2023-05-16 | 2024-04-02 | 醴陵千汇实业有限公司 | 一种用于杯耳挤压成型坯体泥料 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6278572B2 (ja) | 一回焼成二段ソーキング法 | |
| CN101646638B (zh) | 蜂窝陶瓷结构体的制造方法 | |
| CN109095916B (zh) | 一种sps烧结制备yag透明陶瓷的方法 | |
| CN103819219A (zh) | 一种耐酸碱腐蚀的碳化硅多孔支撑体 | |
| CN108751969B (zh) | 一种耐高温、隔热、透波陶瓷基复合材料及其制备方法 | |
| CN105780126B (zh) | 一种由原位生成的晶须搭接而成的多孔莫来石的制备方法 | |
| CN101323524A (zh) | 一种定向排列孔碳化硅多孔陶瓷的制备方法 | |
| JP2010195634A (ja) | チタン酸アルミニウム系セラミックス焼結体の製造方法およびチタン酸アルミニウム系セラミックス焼結体 | |
| JP5036008B2 (ja) | コージエライトの形成 | |
| CN109534820B (zh) | 一种玻璃热弯成型用陶瓷模具及其制备方法 | |
| CN114409434A (zh) | 一种低热膨胀钛酸铝陶瓷及其制备方法 | |
| CN107892581B (zh) | 一种高强抗腐锆刚玉蜂窝陶瓷体及其制备方法 | |
| CN109851337A (zh) | 一种高温用堇青石-莫来石棚板及其制备方法 | |
| CN116693324B (zh) | 具有多级孔结构的轻质隔热钛酸铝多孔陶瓷的制备方法 | |
| CN112778008A (zh) | 钛酸铝多孔陶瓷及其制备方法以及多孔介质燃烧器 | |
| CN114956828A (zh) | 碳化硅陶瓷及其制备方法和应用 | |
| CN113185268B (zh) | 一种氧化铝陶瓷材料的制备方法及氧化铝陶瓷基片 | |
| CN105819851B (zh) | 钛酸铝蜂窝陶瓷材料及其制备方法 | |
| JP5368081B2 (ja) | チタン酸アルミニウム系焼成体の製造方法 | |
| JPH04333619A (ja) | 高純度アルミナ繊維成形体の製造方法 | |
| JP2007090207A (ja) | 炭酸ガス吸収材およびその製造方法 | |
| CN107473734B (zh) | 一种高耐电强度的线性介质陶瓷及其制备方法 | |
| CN107337441B (zh) | 一种陶瓷及其制造方法 | |
| CN116283251B (zh) | 一种氧化铝陶瓷及其制备方法与应用 | |
| JP2000016872A (ja) | 多孔質炭化珪素焼結体及びその製造方法 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |