CN1242083C - Prepn of composite Ti3AlC2 material reinforcer - Google Patents
Prepn of composite Ti3AlC2 material reinforcer Download PDFInfo
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- CN1242083C CN1242083C CN 01138732 CN01138732A CN1242083C CN 1242083 C CN1242083 C CN 1242083C CN 01138732 CN01138732 CN 01138732 CN 01138732 A CN01138732 A CN 01138732A CN 1242083 C CN1242083 C CN 1242083C
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- powder
- alc
- ti3alc2
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Abstract
The present invention relates to a Ti3AlC2 composite material, particularly to a preparation method of a Ti3AlC2 composite material reinforcer. The preparation method uses Ti powder, Al powder and C powder as raw materials according to the molar ratio of 3:1 to 1.2:1.6 to 2.1, and the raw materials are uniformly mixed by ball milling for 10 to 20 hours and are sealed in a boron nitride or graphite crucible. The raw materials are secondly added into a SiC tubular furnace which uses flowing Ar gas as shielding gas, the temperature of the tubular furnace is risen to 1300 to 1450 DEG C according to the speed of 5 to 40 DEG C/min, and solid-liquid phase reaction is carried out for 0.5 to 4 hours at corresponding temperature. The method of the present invention has the advantages of high product purity, short reaction time, uniform particle size distribution, convenient operation and simple process.
Description
Technical field
The present invention relates to Ti
3AlC
2Matrix material, specifically a kind of Ti
3AlC
2The preparation method of matrix material toughener.
Background technology
Ti
3AlC
2It is a kind of novel tertiary lamellar compound.It has the advantage of pottery and metal simultaneously.Resemble pottery, as low density (4.21g/cm
3), high-modulus, high strength, high-melting-point, excellent oxidation-resistance etc.; Metallicity is arranged again, as high conductivity, high thermal conductivity, but mechanical workout and heat shock resistance etc.In addition, Ti
3AlC
2, also have self lubricity.Advantages such as low density, high-modulus, high conduction and thermal conductivity make Ti
3AlC
2Become the desirable toughener of metal, pottery and polymer matrix composites.As with Ti
3AlC
2Join in the insulating resin and can improve its modulus, intensity, conduction and thermal conductivity greatly; For another example, with Ti
3AlC
2Join in the metals such as Cu, Al, Ti, when improving its modulus and intensity and do not reduce its conduction and thermal conductivity.In addition, because Ti
3AlC
2Self-lubricating property, the frictional coefficient of metal-base composites is reduced greatly.But, also do not have Ti at present
3AlC
2The preparation method of matrix material toughener.Document 1 (J.Am.Ceram.Soc.Vol.83, No.4,825-832,2000) is 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.If as the matrix material toughener, need further with Ti
3AlC
2The block polycrystalline material carries out the powder processing.And 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 non-conductive oxide ceramics,, will influence composite property if as the matrix material toughener.
Summary of the invention
The object of the invention provide a kind of reaction times short, product purity is high, even particle size distribution, technology simple T i
3AlC
2The preparation method of matrix material toughener.
To achieve these goals; technical scheme of the present invention is: with the Ti powder; Al powder and C powder are raw material; its mol ratio is Ti: Al: C=3: 1～1.2: 1.6～2.1; described raw material is sealed in boron nitride (BN) or the plumbago crucible after ball milling 10-20 hour mixes, put into then SiC tube furnace that the Ar gas that flows does protection gas with 5～40 ℃/min be warming up to 1300～1450 ℃, under relevant temperature through nothing press solidly-liquid phase reaction obtained the single phase Ti of even particle size distribution in 0.5～4 hour
3AlC
2The matrix material toughener.
The present invention has the following advantages:
1. the reaction times lacks, and cost is low.Because making full use of the reaction heat of the thermopositive reaction between element ti and Al, Ti and the C, the present invention promotes Ti
3AlC
2Synthetic, and, can obtain single phase Ti at short notice by reasonable control reaction process parameter (temperature rise rate, top temperature and soaking time etc.)
2AlC
2The matrix material toughener.Same prior art (document 1) hot pressing was compared in 16 hours, and the reaction times of the present invention is very short, only can obtain the single phase Ti of even particle size distribution in 0.5～4 hour
3AlC
2The matrix material toughener, thus can cut down the consumption of energy significantly, thus reduced production cost.
2. product purity height.Adopt in the inventive method product but Al
2O
3Exist mutually Deng impurity, and the toughener particle is tiny and be evenly distributed, is suitable as very much the matrix material toughener.
3. easy to operate, technology is simple.The present invention selects commercially available Ti powder, Al powder and C powder for use, and starting material are cheap and easy to get; In addition, same prior art (document 1) is compared, and Reaktionsofen of the present invention is conventional SiC tube furnace, and is not high to equipment requirements; Need not pressurization during operation, easy to operate, and can directly obtain the Ti of even particle size distribution
3AlC
2Matrix material toughener powder body material, technology is simple, is fit to very much large-scale industrialization production.
Description of drawings
Fig. 1 is Ti in the one embodiment of the invention
3AlC
2Powder x-ray diffraction figure.
Embodiment
Embodiment 1
Ti powder 143.64 grams, Al powder 26.98 grams, C powder 24.02 grams, its mol ratio is Ti: Al: C=3: 1: 2; With described raw material ball milling 10 hours; put into airtight plumbago crucible after mixing; do at the Ar gas that flows that the temperature rise rate with 30 ℃/min is warming up to 1350 ℃ in the SiC tube furnace of protective atmosphere; do not have under this temperature then and press solidly-liquid phase reaction 3 hours, the reaction product of acquisition is the matrix material toughener Ti of single phase through the powder x-ray diffraction analysis
3AlC
2, referring to accompanying drawing 1.
Embodiment 2
Ti powder 143.64 grams; Al powder 29.68 grams; C powder 22.82 grams; its mol ratio is Ti: Al: C=3: 1.1: 1.9; with described raw material ball milling 14 hours, put into airtight BN crucible after mixing, do at Ar gas that the temperature rise rate with 30 ℃/min is warming up to 1450 ℃ in the SiC tube furnace of protective atmosphere; do not have under this temperature then and press solidly-liquid phase reaction 1 hour, the reaction product of acquisition is the single phase Ti of even particle size distribution
3AlC
2The matrix material toughener.
Embodiment 3
Ti powder 143.64 grams; Al powder 29.68 grams; C powder 22.82 grams; its mol ratio is Ti: Al: C=3: 1.1: 1.9; with described raw material ball milling 14 hours; put into airtight BN crucible after mixing, do at the Ar gas that flows that the temperature rise rate with 20 ℃/min is warming up to 1450 ℃ in the SiC tube furnace of protective atmosphere, under this temperature, do not have then to press solidly-liquid phase reaction 0.5 hour.The reaction product that obtains is the single phase Ti of even particle size distribution
3AlC
2The matrix material toughener.
The reaction heat that the present invention makes full use of the thermopositive reaction between element ti and Al, Ti and the C promotes Ti
3AlC
2Synthetic, compare with document in the prior art 1, the reaction times of the present invention short (only in 0.5～4 hour), temperature of reaction lower limit lower (1300～1450 ℃), the product purity height (does not contain Al
2O
3Deng impurity), need not pressurization, easy to operate, technology is simple.
Claims (1)
1. Ti
3AlC
2The preparation method of matrix material toughener; it is characterized in that: with the Ti powder; Al powder and C powder are raw material; its mol ratio is Ti: Al: C=3: 1～1.2: 1.6～2.1; described raw material after mixing in 10～20 hours, ball milling is sealed in boron nitride or the plumbago crucible; put into the Ar gas that flows then and make the SiC tube furnace of protection gas, be warming up to 1300～1450 ℃ with 5～40 ℃/min temperature rise rate, then under relevant temperature through solid-liquid phase reaction 0.5～4 hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01138732 CN1242083C (en) | 2001-11-29 | 2001-11-29 | Prepn of composite Ti3AlC2 material reinforcer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01138732 CN1242083C (en) | 2001-11-29 | 2001-11-29 | Prepn of composite Ti3AlC2 material reinforcer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1421538A CN1421538A (en) | 2003-06-04 |
| CN1242083C true CN1242083C (en) | 2006-02-15 |
Family
ID=4674700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01138732 Expired - Fee Related CN1242083C (en) | 2001-11-29 | 2001-11-29 | Prepn of composite Ti3AlC2 material reinforcer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1242083C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1317228C (en) * | 2004-12-15 | 2007-05-23 | 中国科学院金属研究所 | Ti3AlC2/Ti5Si3 compound material and its preparation method |
| CN102181765B (en) * | 2010-12-31 | 2013-03-20 | 陕西科技大学 | A (Ti, cr)3AlC2/Al2O3composite material and its preparation method |
| CN104060173B (en) * | 2014-07-02 | 2016-08-24 | 北京交通大学 | A kind of Ti3alC2strengthen Fe based composites and in-situ heat extruding production thereof |
| 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 |
| CN110791671B (en) * | 2019-11-12 | 2021-06-01 | 成都银河动力有限公司 | Al-Ti-C-SiC composite material and preparation method thereof |
-
2001
- 2001-11-29 CN CN 01138732 patent/CN1242083C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1421538A (en) | 2003-06-04 |
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