CN101407416A - Zirconium titanate-based high temperature structure composite material and preparation thereof - Google Patents
Zirconium titanate-based high temperature structure composite material and preparation thereof Download PDFInfo
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- CN101407416A CN101407416A CNA200810177946XA CN200810177946A CN101407416A CN 101407416 A CN101407416 A CN 101407416A CN A200810177946X A CNA200810177946X A CN A200810177946XA CN 200810177946 A CN200810177946 A CN 200810177946A CN 101407416 A CN101407416 A CN 101407416A
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- high temperature
- based high
- structure composite
- metatitanic acid
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Abstract
The invention relates to a zirconia titanate based high-temperature structured composite material and a preparation method thereof, which belongs to the field of ceramic materials. The composite material adopts the raw materials with the weight percent of 90-98 percent of zirconia titanate powder and 2-10 percent of aluminum titanate powder, wherein, the grain diameter of the adopted raw material is less than 0.074mm. The preparation method of the composite material comprises: measuring and batching the raw materials, dry-blending for 1 minute, adding 6 percent (weight percent) of polyvinyl alcohol solution bonding agent with 0.5 percent of mass concentration, stirring for 5 minutes, standing and ageing mixture for 5h to obtain the formed stock; adopting a hydraulic press or a friction press to press and form the stock on the condition that the forming pressure of the green body is between 70-100MPa; and sintering the formed green body on the condition of insulating heat for 3 hours at 1500 DEG C or higher temperature to obtain the zirconia titanate based composite material with high temperature resistance, high strength and favorable thermal shock resistance. The composite material can be used in the fields of metallurgy, automobile, aerospace, and the like.
Description
The technology neck
The invention belongs to the stupalith field, be specifically related to a kind of Zirconium titanate-based high temperature structure composite material and preparation method thereof.
Background technology
The present invention is a kind of Zirconium titanate-based (ZrTiO that can be used for fields such as metallurgy, automobile, space flight of exploitation
4-Al
2TiO
5) high temperature structural composite material.This matrix material is to be principal constituent with the zirconia titanate, is composited with a spot of aluminium titanates, and this matrix material has good high Warm performance, Strong degree and heat-shock resistance.
Zirconia titanate (ZrTiO
4) be inconsistent fusing compound, peritectic temperature is 1900 ℃.Zirconia titanate has high strength, low-dielectric loss, reaches good temperature stability, is the important electron ceramic material of preparation electrical condenser, piezoelectric transducer and micro-wave dielectric resonator.Yet the good resistance to elevated temperatures of zirconia titanate material does not obtain to pay close attention in the high-temperature structural material field, does not see research and the application report that has zirconia titanate to be used for the high-temperature structural material aspect both at home and abroad as yet.
Aluminium titanates (Al
2TiO
5) stupalith has high fusing point (1860 ℃), in room temperature～1000 ℃ temperature range, aluminium titanates has low thermalexpansioncoefficient (α less than zero, or approach zero), is present only low bulk, dystectic thermal shock resistant ceramic material.Aluminum titanate ceramic material has two shortcomings: the one, and the thermal dilation difference of each crystallographic axis of aluminium titanates crystal is bigger, causes aluminium titanates to produce tiny crack when cooling, so the physical strength of material of aluminum titanate is lower, strength at normal temperature is lower than 20MPa; The 2nd, high temperature synthetic aluminium titanates is cooled to 900 ℃～1300 ℃ instabilities, resolves into rutile (TiO
2) and corundum (α-Al
2O
3), and lost low expansion character.In the synthetic batching of aluminium titanates, introduce SiO
2, MgO, ZrO
2, Fe
2O
3Deng stablizer, the temperature decomposition is effectively suppressed in the aluminium titanates, and its intensity also makes moderate progress.At present, aluminum titanate ceramic material has been applied to tooth section Stainless Steel Alloy smelting pot, non-ferrous metal aluminum smelting technology crucible, cast aluminium riser pipe, float glass flow liquid flashboard, automobile exhaust purifier carrier etc.Increase (about strength at normal temperature 30MPa) though introduce its intensity of material of aluminum titanate of stablizer, but still belong to, limited the further application of material of aluminum titanate in fields such as ferrous metallurgy, space flight than the low strength stupalith.
Zirconia titanate material and material of aluminum titanate is compound, utilize high temperature resistant, the high-strength characteristic of zirconia titanate material, and high temperature resistant, the low expansion character of aluminium titanates, prepare a kind of high temperature resistant, high strength, the good Zirconium titanate-based (ZrTiO of anti-thermal shock
4-Al
2TiO
5) high temperature structural composite material, for industrial circles such as iron and steel and nonferrous metallurgy, space flight provide a kind of new type high temperature structured material.Research does not appear in the newspapers as yet with being applied in both at home and abroad in this respect.
Summary of the invention
Goal of the invention of the present invention is above-mentioned deficiency of the prior art, and good Zirconium titanate-based high temperature structure material of a kind of high temperature resistant, high strength, anti-thermal shock and preparation method thereof is provided.
A kind of Zirconium titanate-based high temperature structure composite material is characterized in that this matrix material weight percent raw materials used and raw material is: metatitanic acid zirconium powder 90～98%; Metatitanic acid aluminium powder 2～10%.
Particle diameter＜0.074mm that this matrix material is raw materials used.
The weight percent content of the raw materials used purity of this matrix material is: the ZrTiO in the metatitanic acid zirconium powder
4〉=90%; Al in the metatitanic acid aluminium powder
2TiO
5〉=90%.
The preparation method of this matrix material is: mixed 1 minute doing behind metatitanic acid zirconium powder and the metatitanic acid aluminium powder batching, add mass concentration then and be 0.5% polyvinyl alcohol solution bonding 6% (weight percent), leave standstill ageing mixture 5h acquisition shaping blank after stirring 5min, obtain Zirconium titanate-based high temperature structure composite material through pressure forming, sintering.
The pressure forming method of this matrix material is: adopt hydraulic press or friction press that blank is pressed, moulding pressure is 70～100MPa.The forming method of this matrix material also comprises: isostatic pressing, hot die-casting molding, injection forming, roll-forming, extrusion under vacuum or gel casting forming.
The sintering method of this matrix material is: employing electric furnace agglomerating temperature 〉=1500 ℃ is incubated 3 hours.The sintering method of this matrix material also comprises: hot pressed sintering, high-temperature vacuum sintering or high temperature nitrogen sintering.
The composition mentality of designing of Zirconium titanate-based high temperature structure composite material of the present invention is:
At Al
2O
3-TiO
2-ZrO
2In the three-part system, ZrO
2-Al
2TiO
5-Al
2O
3The subsystem eutectic temperature is 1610 ℃, ZrO
2-Al
2TiO
5-ZrTiO
4The subsystem eutectic temperature is 1590 ℃, Al
2TiO
5-ZrTiO
4-TiO
2The eutectic temperature of subsystem is 1580 ℃, and the composition position of three eutectic temperature points is in Al substantially
2TiO
5Content is in 50%～70% the scope, therefore prepares ZrTiO
4-Al
2TiO
5Composite diphase material, it forms point should be away from three eutectoid point positions, and at Al
2O
3-TiO
2-ZrO
2The ZrTiO of ternary phase diagrams
4Form point and Al
2TiO
5Form on the line of point.
At Al
2TiO
5Form point to ZrTiO
4Form on the composition line of point, from ZrTiO
4With Al
2TiO
5Mass ratio be 90: 10 to ZrTiO
4Form in the scope of point, all belong to the high-temperature zone of liquidus line more than 1800 ℃.So in above proportional range, prepare burden, can obtain resistant to elevated temperatures ZrTiO
4-Al
2TiO
5Matrix material.Zirconium titanate-based (the ZrTiO of test preparation
4-Al
2TiO
5) batching of high temperature structural composite material forms point and be defined as nearly ZrTiO
4The high-temperature area of end.
In sum, the present invention is according to the good characteristic of zirconia titanate material and material of aluminum titanate, at zirconia titanate is to introduce a spot of aluminium titanates in the principal constituent material, and the preparation Zirconium titanate-based high temperature structure composite material obtains to have high temperature resistant, high strength, the good new type high temperature structural ceramic material of anti-thermal shock.This matrix material is expected to be applied to ferrous metallurgy and waters the steel system, and field such as nonferrous metallurgy, glass, automobile exhaust purifier, space flight, military project.To the research and the application of Zirconium titanate-based high temperature structure composite material, still belong to blank at home at present.
Embodiment
Embodiment 1
Batching is formed: the metatitanic acid zirconium powder 98% of particle diameter＜0.74mm, the metatitanic acid aluminium powder 2% of particle diameter＜0.074mm.
With do to mix behind metatitanic acid zirconium powder and the metatitanic acid aluminium powder batching 1 minute, and added mass concentration then is 0.5% polyvinyl alcohol solution bonding 6% (weight percent), stirs to obtain shaping blank after leaving standstill ageing mixture 5h behind the 5min.Adopt hydraulic press to carry out the sample moulding shaping blank, sample moulding pressure is 100MPa; Adopt the electric furnace sintered specimen under the atmospheric air condition, sintering temperature is 1550 ℃, and soaking time is 3h.
The volume density of burning back Zirconium titanate-based high temperature structure composite material sample is 4.45g/cm
-3, folding strength is 85.2MPa, thermalexpansioncoefficient is 6.3 * 10
-6/ ℃ (room temperature～1000 ℃), the thermal shock fatigue number of times is 11 times (cooling of 1100 ℃～air at room temperature).
Embodiment 2
Batching is formed: the metatitanic acid zirconium powder 95% of particle diameter＜0.74mm, the metatitanic acid aluminium powder 5% of particle diameter＜0.074mm.
With do to mix behind metatitanic acid zirconium powder and the metatitanic acid aluminium powder batching 1 minute, and added mass concentration then is 0.5% polyvinyl alcohol solution bonding 6% (weight percent), stirs to obtain shaping blank after leaving standstill ageing mixture 5h behind the 5min.Adopt hydraulic press to carry out the sample moulding shaping blank, sample moulding pressure is 100MPa; Adopt the electric furnace sintered specimen under the atmospheric air condition, sintering temperature is 1550 ℃, and soaking time is 3h.
The volume density of burning back Zirconium titanate-based high temperature structure composite material sample is 4.43g/cm
-3, folding strength is 75.4MPa, thermalexpansioncoefficient is 5.9 * 10
-6/ ℃ (room temperature～1000 ℃), the thermal shock fatigue number of times is 12 times (cooling of 1100 ℃～air at room temperature).
Embodiment 3
Batching is formed: the metatitanic acid zirconium powder 92% of particle diameter＜0.74mm, the metatitanic acid aluminium powder 8% of particle diameter＜0.074mm.
With do to mix behind metatitanic acid zirconium powder and the metatitanic acid aluminium powder batching 1 minute, and added mass concentration then is 0.5% polyvinyl alcohol solution bonding 6% (weight percent), stirs to obtain shaping blank after leaving standstill ageing mixture 5h behind the 5min.Adopt hydraulic press to carry out the sample moulding shaping blank, sample moulding pressure is 100MPa; Adopt the electric furnace sintered specimen under the atmospheric air condition, sintering temperature is 1550 ℃, and soaking time is 3h.
The volume density of burning back Zirconium titanate-based high temperature structure composite material sample is 4.38g/cm
-3, folding strength is 70.7MPa, thermalexpansioncoefficient is 5.8 * 10
-6/ ℃ (room temperature～1000 ℃), the thermal shock fatigue number of times is 15 times (cooling of 1100 ℃～air at room temperature).
Claims (6)
1, a kind of Zirconium titanate-based high temperature structure composite material is characterized in that this matrix material weight percent raw materials used and raw material is: metatitanic acid zirconium powder 90～98%; Metatitanic acid aluminium powder 2～10%.
2, Zirconium titanate-based high temperature structure composite material according to claim 1 is characterized in that raw materials used particle diameter＜0.074mm.
3, Zirconium titanate-based high temperature structure composite material according to claim 1 is characterized in that the weight percent content of raw materials used purity is: the ZrTiO in the metatitanic acid zirconium powder
4〉=90%; Al in the metatitanic acid aluminium powder
2TiO
5〉=90%.
4, a kind of preparation method of Zirconium titanate-based high temperature structure composite material as claimed in claim 1, it is characterized in that: mixed 1 minute doing behind metatitanic acid zirconium powder and the metatitanic acid aluminium powder batching, add mass concentration then and be 0.5% polyvinyl alcohol solution bonding 6% (weight percent), stir and leave standstill ageing mixture 5h behind the 5min and obtain shaping blank; Obtain Zirconium titanate-based high temperature structure composite material through pressure forming, sintering.
5, the preparation method of Zirconium titanate-based high temperature structure composite material as claimed in claim 4 is characterized in that: adopt hydraulic press or friction press that blank is pressed, moulding pressure is 70～100MPa.The forming method of this matrix material also comprises: isostatic pressing, hot die-casting molding, injection forming, roll-forming, extrusion under vacuum or gel casting forming.
6, the preparation method of Zirconium titanate-based high temperature structure composite material as claimed in claim 4 is characterized in that: adopt electric furnace agglomerating temperature to be 〉=1500 ℃, be incubated 3 hours.The sintering method of this matrix material also comprises: hot pressed sintering, high-temperature vacuum sintering or high temperature nitrogen sintering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200810177946XA CN101407416A (en) | 2008-11-19 | 2008-11-19 | Zirconium titanate-based high temperature structure composite material and preparation thereof |
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|---|---|---|---|
| CNA200810177946XA CN101407416A (en) | 2008-11-19 | 2008-11-19 | Zirconium titanate-based high temperature structure composite material and preparation thereof |
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|---|---|
| CN101407416A true CN101407416A (en) | 2009-04-15 |
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ID=40570659
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9339791B2 (en) | 2013-06-18 | 2016-05-17 | Corning Incorporated | Low thermal expansion aluminum titanate zirconium tin titanate ceramics |
-
2008
- 2008-11-19 CN CNA200810177946XA patent/CN101407416A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9339791B2 (en) | 2013-06-18 | 2016-05-17 | Corning Incorporated | Low thermal expansion aluminum titanate zirconium tin titanate ceramics |
| US9656245B2 (en) | 2013-06-18 | 2017-05-23 | Corning Incorporated | Low thermal expansion aluminum titanate-zirconium tin titanate ceramics |
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Application publication date: 20090415 |