CN101550013A - Reaction sintered aluminum titanate-silicon nitride composite material and preparation method thereof - Google Patents
Reaction sintered aluminum titanate-silicon nitride composite material and preparation method thereof Download PDFInfo
- Publication number
- CN101550013A CN101550013A CNA2009101382252A CN200910138225A CN101550013A CN 101550013 A CN101550013 A CN 101550013A CN A2009101382252 A CNA2009101382252 A CN A2009101382252A CN 200910138225 A CN200910138225 A CN 200910138225A CN 101550013 A CN101550013 A CN 101550013A
- Authority
- CN
- China
- Prior art keywords
- powder
- preparation
- silicon nitride
- aluminum titanate
- composite material
- 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
Landscapes
- Ceramic Products (AREA)
Abstract
The invention relates to a reaction sintered aluminum titanate-silicon nitride composite material and preparation method thereof, belonging to the ceramic material field. The nitridation sintered aluminum titanate-silicon nitride composite material comprises the following raw materials by weight percentage: 42-47% alpha-Al2O3 powder, 34-38% TiO2 powder, 3.6-4.6% MgO power, 0.4% ZrO2 power, 10-20% Si power. The preparation method comprises the following steps: dry mixing the above raw materials; mixing the raw materials with polyvinyl alcohol solution with mass concentration of 2% and stirring the mixture to form a semi-dry ingot, wherein the weight percentage addition amount of the polyvinyl alcohol solution is 6%; molding the body at 100-150 MPa; drying the molded body for 2h at 110 DEG C; burning the dried body at 1450-1550 DEG C for 2-3h under the nitriding atmosphere to form the nitridation sintered aluminum titanate-silicon nitride composite material. The intensity of the composite material is higher than the common aluminum titanate material, as the regeneration material in fields of metallurgy, glass, automobile, spaceflight or the like.
Description
Technical field
The invention belongs to the stupalith field, be specifically related to a kind of reaction sintered aluminum titanate-silicon nitride composite material and preparation method thereof.
Background technology
The present invention is a kind of reaction sintered aluminum titanate-silicon nitride composite material that can be used for fields such as metallurgy, automobile, space flight of exploitation.The thing phase composite of this matrix material is to be principal constituent with the aluminium titanates, is composited with a spot of silicon nitride, and this matrix material has good high-temperature performance, Strong degree and heat-shock resistance.
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.Differing greatly of each crystallographic axis thermal expansion of aluminium titanates crystal cause material of aluminum titanate to produce tiny crack when cooling, so the physical strength of material of aluminum titanate is lower, and strength at normal temperature is lower than 20MPa.Its intensity of material of aluminum titanate of introducing stablizer increases (about strength at normal temperature 30MPa), but still belongs to than the low strength stupalith, has limited the further application of material of aluminum titanate in fields such as ferrous metallurgy, space flight.The aluminium titanate crucible of developments such as Wang Zhifa is applied to the induction melting castingprocesses of the steel alloy artificial tooth of 1650 ℃ of alloy molten steel, and the basic alloy-free molten steel of inner surface of crucible is residual and corrode vestige, but still there is the lower shortcoming of intensity in this aluminium titanate crucible.
Silicon nitride (Si
3N
4) be a kind of non-oxide ceramic material with good intensity, the erosion of high temperature resistant, anti-oxidant, anti-melt, low thermal coefficient of expansion.Its decomposition temperature is 1900 ℃, but resistance to oxidation to 1400 ℃, and the coefficient of linear expansion of 20～1400 ℃ of scopes is: (2.8～3.2) * 10
-6/ ℃.Metallurgy, machinery, chemical industry, semi-conductor, aviation, nuclear power etc. industrial have more widely use.
This problem is according to the composite modified of multiphase ceramic composite and reaction sintering principle, with Alpha-alumina (α-Al
2O
3) powder, titanium white (TiO
2) powder, with silicon nitride (Si
3N
4) powder is main raw material, the synthetic aluminium titanates of reaction forms silicon nitride and aluminium titanates bonded reaction sintered aluminum titanate-silicon nitride composite material under the high temperature nitrogen condition.When the matrix material after the preparation experienced the high temperature use once more, a small amount of silicon nitride at matrix material phaneropore position can oxidizing reaction be silicon oxide (SiO
2), the reaction process that silicon nitride is oxidized to silicon oxide is attended by the volumetric expansion effect, has further improved the degree of compactness and the intensity of matrix material.Reaction sintered aluminum titanate-silicon nitride composite material of the present invention can be industrial circles such as iron and steel and nonferrous metallurgy, space flight a kind of new type high temperature structured material is provided.
Summary of the invention
Goal of the invention of the present invention is above-mentioned deficiency of the prior art, and reaction sintered aluminum titanate-silicon nitride composite material of a kind of high temperature resistant, Strong degree height, highly heatproof and shockproof and preparation method thereof is provided.
Technical scheme of the present invention and technical characterictic are:
The present invention is a kind of reaction sintered aluminum titanate-silicon nitride composite material and preparation method thereof, it is characterized in that this matrix material weight percent raw materials used and raw material is: α-Al
2O
3Powder 42～47%, TiO
2Powder 34～38%, MgO powder 3.6～4.6%, ZrO
2Powder 0.4%, Si
3N
4Powder 10～20%.This Composite Preparation may further comprise the steps: the blank preparation; Blank forming; Body drying; The base substrate high-temperature ammonolysis burns till.
The particle diameter that this matrix material is raw materials used: α-Al
2O
3Powder＜0.01mm, TiO
2Powder＜0.01mm, MgO powder＜0.01mm, ZrO
2Powder＜0.01mm, Si
3N
4Powder＜0.04mm.
The weight percent content of the raw materials used purity of this matrix material is: α-Al
2O
3Al in the powder
2O
3〉=99%, TiO
2TiO in the powder
2〉=99%, the MgO in the MgO powder 〉=99%, ZrO
2ZrO in the powder
2〉=95%, Si
3N
4Si in the powder
3N
4〉=95%.
The blank preparation method of this matrix material is: with α-Al
2O
3Powder, TiO
2Powder, MgO powder, ZrO
2Powder and Si
3N
4After dried bean noodles mixes, be that 2% polyvinyl alcohol solution mixes and stirs the half-dried blank of formation with mass concentration, the add-on of polyvinyl alcohol solution is 6% (weight percent adds).
The blank forming method of this matrix material is: adopt hydraulic press or friction press moulding, blank forming pressure is 50～100MPa.
The body drying method of this matrix material is; Base substrate is at 110 ℃ of dry 2h after the moulding.
The base substrate process for calcining of this matrix material is: dry back base substrate burns till through 1450～1550 ℃ of nitriding atmospheres, obtains reaction sintered aluminum titanate-silicon nitride composite material behind soaking time 2～3h.
Embodiment
Embodiment 1
Each raw material weight per-cent of matrix material blank is: α-Al of＜0.01mm
2O
3Powder 45%, the TiO of＜0.01mm
2Powder 36%, the MgO powder 3.6% of＜0.01mm, the ZrO of＜0.01mm
2Powder 0.4%, the Si of＜0.04mm
3N
4Powder 15%; Blank preparation be with above-mentioned each raw material do mix after, be that 2% polyvinyl alcohol solution mixes and stirs the formation blank with mass concentration, the add-on of polyvinyl alcohol solution is 6% (weight percent adds); Blank forming pressure is 100MPa; Base substrate is at 110 ℃ of dry 2h; Dry back base substrate obtains reaction sintered aluminum titanate-silicon nitride composite material after 1550 soaking time 2h burn till.
The apparent porosity of this matrix material is 11.66%, and folding strength is 45.6MPa (folding strength of pure material of aluminum titanate is 14.5MPa).
Embodiment 2
Each raw material weight per-cent of matrix material blank is: α-Al of＜0.01mm
2O
3Powder 46%, the TiO of＜0.01mm
2Powder 37%, the MgO powder 3.6% of＜0.01mm, the ZrO of＜0.01mm
2Powder 0.4%, the Si of＜0.04mm
3N
4Powder 13%; Blank preparation be with above-mentioned each raw material do mix after, be that 2% polyvinyl alcohol solution mixes and stirs the formation blank with mass concentration, the add-on of polyvinyl alcohol solution is 6% (weight percent adds); Blank forming pressure is 100MPa; Base substrate is at 110 ℃ of dry 2h; Dry back base substrate obtains reaction sintered aluminum titanate-silicon nitride composite material after 1550 soaking time 2h burn till.
The apparent porosity of this matrix material is 8.93%, and folding strength is 54.7MPa (folding strength of pure material of aluminum titanate is 14.5MPa).
Embodiment 3
Each raw material weight per-cent of matrix material blank is: α-Al of＜0.01mm
2O
3Powder 47%, the TiO of＜0.01mm
2Powder 38%, the MgO powder 3.6% of＜0.01mm, the ZrO of＜0.01mm
2Powder 0.4%, the Si of＜0.04mm
3N
4Powder 11%; Blank preparation be with above-mentioned each raw material do mix after, be that 2% polyvinyl alcohol solution mixes and stirs the formation blank with mass concentration, the add-on of polyvinyl alcohol solution is 6% (weight percent adds); Blank forming pressure is 100MPa; Base substrate is at 110 ℃ of dry 2h; Dry back base substrate obtains reaction sintered aluminum titanate-silicon nitride composite material after 1550 soaking time 2h burn till.
The apparent porosity of this matrix material is 6.51%, and folding strength is 60.2MPa (folding strength of pure material of aluminum titanate is 14.5MPa).
Claims (8)
1, a kind of reaction sintered aluminum titanate-silicon nitride composite material and preparation method thereof is characterized in that this matrix material weight percent raw materials used and raw material is: α-Al
2O
3Powder 42～47%, TiO
2Powder 34～38%, MgO powder 3.6～4.6%, ZrO
2Powder 0.4%, Si
3N
4Powder 10～20%.This Composite Preparation may further comprise the steps: the blank preparation; Blank forming; Body drying; The base substrate high-temperature ammonolysis burns till.
2, reaction sintered aluminum titanate-silicon nitride composite material as claimed in claim 1 and preparation method thereof is characterized in that raw materials used particle diameter is: α-Al
2O
3Powder＜0.01mm, TiO
2Powder＜0.01mm, MgO powder＜0.01mm, ZrO
2Powder＜0.01mm, Si
3N
4Powder＜0.04mm.
3, reaction sintered aluminum titanate-silicon nitride composite material as claimed in claim 1 and preparation method thereof is characterized in that the weight percent content of raw materials used purity is: α-Al
2O
3Al in the powder
2O
3〉=99%, TiO
2TiO in the powder
2〉=99%, the MgO in the MgO powder 〉=99%, ZrO
2ZrO in the powder
2〉=95%, Si
3N
4Si in the powder
3N
4〉=95%.
4, reaction sintered aluminum titanate-silicon nitride composite material as claimed in claim 1 and preparation method thereof is characterized in that the blank preparation method is: with α-Al
2O
3Powder, TiO
2Powder, MgO powder, ZrO
2Powder and Si
3N
4After dried bean noodles mixes, mix stirring with polyvinyl alcohol solution and form half-dried blank.
5, reaction sintered aluminum titanate-silicon nitride composite material as claimed in claim 4 and preparation method thereof is characterized in that the mass concentration of the polyvinyl alcohol solution in the blank preparation is 2%, and the outer dosage of weight percent is 6%.
6, reaction sintered aluminum titanate-silicon nitride composite material as claimed in claim 1 and preparation method thereof is characterized in that the blank forming method is: adopt hydraulic press or friction press moulding, blank forming pressure is 50～100MPa.
7, reaction sintered aluminum titanate-silicon nitride composite material as claimed in claim 1 and preparation method thereof, it is characterized in that the body drying method is: base substrate is at 110 ℃ of dry 2h after the moulding.
8, reaction sintered aluminum titanate-silicon nitride composite material as claimed in claim 1 and preparation method thereof is characterized in that base substrate high-temperature ammonolysis process for calcining is: dry back base substrate obtains reaction sintered aluminum titanate-silicon nitride composite material after 1450～1550 ℃ of insulation 2～3h burn till under nitriding atmosphere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009101382252A CN101550013A (en) | 2009-05-06 | 2009-05-06 | Reaction sintered aluminum titanate-silicon nitride composite material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009101382252A CN101550013A (en) | 2009-05-06 | 2009-05-06 | Reaction sintered aluminum titanate-silicon nitride composite material and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101550013A true CN101550013A (en) | 2009-10-07 |
Family
ID=41154542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009101382252A Pending CN101550013A (en) | 2009-05-06 | 2009-05-06 | Reaction sintered aluminum titanate-silicon nitride composite material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101550013A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111675532A (en) * | 2020-05-29 | 2020-09-18 | 秦皇岛松浦工业炉有限公司 | Ceramic holding furnace manufacturing process |
-
2009
- 2009-05-06 CN CNA2009101382252A patent/CN101550013A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111675532A (en) * | 2020-05-29 | 2020-09-18 | 秦皇岛松浦工业炉有限公司 | Ceramic holding furnace manufacturing process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111620679B (en) | Method for preparing high-purity mullite material by taking fused silica as silicon source | |
| US9546114B2 (en) | SiAlON bonded silicon carbide material | |
| CN105838920B (en) | A kind of Ti/AlN ceramic-metal composites and preparation method thereof | |
| JP5062402B2 (en) | Reaction sintered silicon nitride-based sintered body and method for producing the same | |
| CN104418608B (en) | The easy fired method of carborundum porous ceramics | |
| CN112279640A (en) | Aluminum titanate ceramic for casting and preparation method thereof | |
| CN101550013A (en) | Reaction sintered aluminum titanate-silicon nitride composite material and preparation method thereof | |
| CN105152663B (en) | A kind of preparation method of silicon nitride bonded silicon ferro-silicon nitride material | |
| CN101549999A (en) | Aluminum titanate-silicon nitride composite material and synthesis reaction method thereof | |
| CN104844214A (en) | Densified high-strength zirconium carbide ceramic material, densified high-strength hafnium carbide ceramic material, and low temperature preparation methods of densified high-strength zirconium carbide ceramic material and densified high-strength hafnium carbide ceramic material | |
| GB2457688A (en) | A process for the manufacture of sialon-bonded silicon carbide composite materials | |
| CN101550000A (en) | Nitridation sintered aluminum titanate-silicon nitride composite material and preparation method thereof | |
| CN107382288A (en) | A kind of preparation technology of novel fire resistant ceramic material | |
| CN101423390B (en) | Aluminium titanate-zircite-zirconium titanate composite material and preparation method thereof | |
| JP2019503973A (en) | Particles for producing refractories, use of the particles, refractories, processes for producing refractories, and products produced by the processes | |
| CN1298676C (en) | Method for preparing beta-'Sailong' ceramic powder | |
| CN101397207A (en) | Aluminium titanate base high temperature structural composite material and preparation method thereof | |
| CN109053202A (en) | A kind of calcium zirconate crucible and preparation method thereof | |
| KR20030090081A (en) | A Method for Producing Aluminum titanate- Zirconium titanate Ceramics with Low Thermal Expansion Behavior | |
| JP2011020889A (en) | Reaction sintered silicon nitride ceramic, and method for manufacturing the same | |
| JP2010173877A (en) | Silicon nitride sintered compact | |
| CN101407416A (en) | Zirconium titanate-based high temperature structure composite material and preparation thereof | |
| JPH0692270B2 (en) | Silicon nitride sintered body | |
| Wang et al. | Synthesis and oxidation of bulk Ti3AlC2 | |
| JP2015024926A (en) | Porous sintered body and production method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20091007 |