CN1108392C - Method for preparing titanium aluminium carbon block material by in-situ hot pressing/solid-liquid phase reaction - Google Patents
Method for preparing titanium aluminium carbon block material by in-situ hot pressing/solid-liquid phase reaction Download PDFInfo
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- CN1108392C CN1108392C CN 00123203 CN00123203A CN1108392C CN 1108392 C CN1108392 C CN 1108392C CN 00123203 CN00123203 CN 00123203 CN 00123203 A CN00123203 A CN 00123203A CN 1108392 C CN1108392 C CN 1108392C
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- Prior art keywords
- powder
- solid
- liquid phase
- hot pressing
- phase reaction
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- 238000007731 hot pressing Methods 0.000 title claims abstract description 24
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 16
- 239000007791 liquid phase Substances 0.000 title claims abstract description 13
- 239000000463 material Substances 0.000 title claims abstract description 13
- 238000011065 in-situ storage Methods 0.000 title claims abstract description 12
- 238000000034 method Methods 0.000 title claims abstract description 10
- 239000010936 titanium Substances 0.000 title claims description 34
- 229910052719 titanium Inorganic materials 0.000 title claims description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 title claims description 4
- RQMIWLMVTCKXAQ-UHFFFAOYSA-N [AlH3].[C] Chemical compound [AlH3].[C] RQMIWLMVTCKXAQ-UHFFFAOYSA-N 0.000 title claims description 4
- 239000000843 powder Substances 0.000 claims abstract description 27
- 239000002994 raw material Substances 0.000 claims abstract description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000010439 graphite Substances 0.000 claims abstract description 6
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 6
- 238000000498 ball milling Methods 0.000 claims abstract description 5
- 230000001681 protective effect Effects 0.000 claims abstract description 5
- 239000004615 ingredient Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 abstract 1
- 238000002441 X-ray diffraction Methods 0.000 description 4
- 239000007795 chemical reaction product Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000013590 bulk material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
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- Powder Metallurgy (AREA)
Abstract
The present invention relates to a method for preparing a Ti-Al-C block material by in-situ hot-pressing/solid-liquid phase reaction. The method is characterized in that Ti powder, Al powder and C powder in the atomic ratio of 3: (1.0 to 1.1): (1.8 to 2.0) are used as raw materials; the raw materials are processed through ball milling for 5 to 15 hours and pressed into a cake shape under the pressure of 8 to 12MPa; the raw material cakes are put in a graphite mold, the temperature is increased to 1200 DEG C to 1500 DEG C at the heating rate of 5 to 30 DEG C/min in a hot-pressing furnace in the presence of Ar gas as protective atmosphere, and the in-situ hot-pressing /solid-liquid phase reaction is carried for 0.5 to 4 hours, and the pressure of hot pressing is from 10 to 50MPa. The method can be carried out at a low temperature in a short period of time.
Description
The present invention relates to intermetallic compound, provide a kind of in-situ hot pressing/solid-liquid phase reaction to prepare Ti especially
3AlC
2The method of block materials.
Ti
3AlC
2It is a kind of novel tertiary lamellar compound.It had both had the plurality of advantages of stupalith, as high-melting-point, and high-modulus (Young's modulus 297GPa, shearing modulus 124GPa), high strength etc.; Some characteristics that have metallic substance again, as high conductivity, high thermal conductivity, but destruction there are strong resistibility and mechanical workout etc.In addition, because Ti
3AlC
2Low (the 4.2g/cm of density
3), be a kind of a kind of novel texture/function integration material that gets a good chance of being applied in high-tech sectors such as Aeronautics and Astronautics, nuclear industry and electronic information.Though Ti
3AlC
2Have excellent comprehensive performance and application prospects.But because the preparation difficulty of this material makes his fundamental research and application be restricted.As document 1.J.Am.Ceram.Soc.83, No.4,2000.With Ti, graphite and Al
4C
3Be raw material, at 1400 ℃, 70MPa hot pressing 16 hours synthesizes the Ti of non-stoichiometric
3AlC
2The block polycrystalline material.Because Al in the raw material
4C
3Water-absorbent very strong, Al
4C
3The moisture that absorbs is difficult to Ex-all, and causing has Al in product
2O
3Impurity exist mutually (
)。Al
2O
3Be the brittle oxide pottery, it is at Ti
3AlC
2Existence in the polycrystalline bulk material influences Ti
3AlC
2Mechanical property and conductivity.
Having the object of the present invention is to provide a kind of is raw material with Ti powder, Al powder and C powder, carries out in-situ hot pressing/solid-liquid phase reaction in lesser temps, short period of time and obtains Ti
3AlC
2The preparation method of block materials.
The invention provides a kind of in-situ hot pressing/solid-liquid phase reaction and prepare the method for titanium aluminium carbon block material, Ti
3AlC
2The chemical ingredients of block materials is pressed atomic ratio, Ti: Al: C :=3: 1: 2, it is characterized in that:
1) raw material is formed and composition range:
With the Ti powder, Al powder and C powder are raw material; The Ti powder, the atomic ratio Ti of Al powder and C powder: Al: C=3: (1.0-1.1): (1.8-2.0);
2) technology:
Raw material ball milling 5～15 hours; depress to pie at 8～12MPa pressure; put into graphite jig and rose to 1200 ℃ of-1500 ℃ of in-situ hot pressings/solid-liquid phase reaction 0.5-4 hour, hot pressing pressure 10-50MPa being connected with hot pressing furnace that Ar gas does protective atmosphere temperature rise rate with 5-30 ℃/min.
Characteristics of the present invention are: 1. select for use starting material simple, they are Ti powder, Al powder and C powder; 2. make full use of Ti and Al, the thermopositive reaction between Ti and the C promotes Ti
3AlC
2Synthetic, therefore, hot pressing temperature is low, below 1500 ℃, the reaction times is short, generally at 2 hours with interior synthetic finishing; 3. by in-situ hot pressing/solid-liquid phase reaction, reaction and one step of sintering finish, and have obtained single mutually fine and close Ti
3AlC
2Block materials.Its reaction process can be described as:
，
，
。
Below by embodiment in detail the present invention is described in detail.
Accompanying drawing 1 is the X-ray diffraction of reaction product;
Embodiment 1.
Ti powder 71.82 grams; Al powder 13.49 grams; C powder 12.01 grams; ball milling 10 hours; depress to pie at 10MPa pressure; put into graphite jig and rose to 1450 ℃ of in-situ hot pressings/solid-liquid phase reaction 2 hours, hot pressing pressure 20MPa being connected with hot pressing furnace that Ar gas does protective atmosphere temperature rise rate with 10 ℃/min.The reaction product that obtains is Ti through the X-ray diffraction analysis
3AlC
2Ti
3AlC
2X-ray diffraction pattern see accompanying drawing 1.Surveying its density with Archimedes's method is 4.22g/cm
3(theoretical density is 4.25g/cm
3).
Example 2.
Ti powder 71.82 grams, Al powder 14.84 grams, C powder 10.81 grams; ball milling 10 hours; depress to pie at 10MPa pressure, put into graphite jig and rise to 1500 ℃ of solid-liquid phase reactions 1 hour, hot pressing pressure 20MPa being connected with hot pressing furnace that Ar gas does protective atmosphere temperature rise rate with 20 ℃/min.It is 4.2g/cm that block is surveyed its density with Archimedes's method
3The reaction product that obtains is Ti through the X-ray diffraction analysis
3AlC
2
Claims (1)
1, a kind of in-situ hot pressing/solid-liquid phase reaction prepares the method for titanium aluminium carbon block material, Ti
3AlC
2The chemical ingredients of block materials is pressed atomic ratio, Ti: Al: C :=3: 1: 2, it is characterized in that:
1) raw material is formed and composition range:
With the Ti powder, Al powder and C powder are raw material; The Ti powder, the atomic ratio Ti of Al powder and C powder: Al: C=3: (1.0-1.1): (1.8-2.0);
2) technology:
Raw material ball milling 5～15 hours; depress to pie at 8～12MPa pressure; put into graphite jig and rose to 1200 ℃ of-1500 ℃ of in-situ hot pressings/solid-liquid phase reaction 0.5-4 hour, hot pressing pressure 10-50MPa being connected with hot pressing furnace that Ar gas does protective atmosphere temperature rise rate with 5-30 ℃/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00123203 CN1108392C (en) | 2000-11-06 | 2000-11-06 | Method for preparing titanium aluminium carbon block material by in-situ hot pressing/solid-liquid phase reaction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00123203 CN1108392C (en) | 2000-11-06 | 2000-11-06 | Method for preparing titanium aluminium carbon block material by in-situ hot pressing/solid-liquid phase reaction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1352317A CN1352317A (en) | 2002-06-05 |
| CN1108392C true CN1108392C (en) | 2003-05-14 |
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ID=4589668
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00123203 Expired - Fee Related CN1108392C (en) | 2000-11-06 | 2000-11-06 | Method for preparing titanium aluminium carbon block material by in-situ hot pressing/solid-liquid phase reaction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1108392C (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100519477C (en) * | 2006-02-17 | 2009-07-29 | 中国科学院金属研究所 | Method for preparing tantalum-aluminium-carbon ceramic by in-situ heat-pressing/solid-liquid phase reaction |
| CN100519478C (en) * | 2006-02-22 | 2009-07-29 | 中国科学院金属研究所 | Method for preparing zirconium-aluminium-carbon ceramic cube material by in-situ reaction heat-pressing |
| CN100396650C (en) * | 2006-10-30 | 2008-06-25 | 陕西科技大学 | Method for preparing Ti2AlC ceramic material |
| CN103208735A (en) * | 2012-01-12 | 2013-07-17 | 郑州大学 | Heat sink with adjustable thermal expansion coefficients for large-power semiconductor laser array |
| CN104016345B (en) * | 2014-06-03 | 2016-04-27 | 河海大学 | The preparation method of one kind Graphene two-dimensional layer titanium carbide nanometer sheet |
| CN106396683B (en) * | 2016-08-29 | 2019-03-01 | 华北电力大学（保定） | A kind of titanium aluminium carbon and titanium carbide composite hydrogen storage material and preparation method thereof |
| CN109231988B (en) * | 2018-11-01 | 2020-09-22 | 燕山大学 | Large-vacancy non-metered specific activity Ti3AlC2Method for preparing ceramic material |
| CN110627507B (en) * | 2019-09-18 | 2022-02-25 | 广东工业大学 | Low-temperature silicon carbide ceramic and preparation method and application thereof |
-
2000
- 2000-11-06 CN CN 00123203 patent/CN1108392C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1352317A (en) | 2002-06-05 |
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Granted publication date: 20030514 Termination date: 20091207 |