CN1506333A - Method of raising the medium temperature antioxygenation of Ti3AlC2 - Google Patents
Method of raising the medium temperature antioxygenation of Ti3AlC2 Download PDFInfo
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- CN1506333A CN1506333A CNA021447861A CN02144786A CN1506333A CN 1506333 A CN1506333 A CN 1506333A CN A021447861 A CNA021447861 A CN A021447861A CN 02144786 A CN02144786 A CN 02144786A CN 1506333 A CN1506333 A CN 1506333A
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- Prior art keywords
- oxidation
- alc
- ti3alc2
- sample
- raising
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- 238000000034 method Methods 0.000 title claims abstract description 10
- 229910009818 Ti3AlC2 Inorganic materials 0.000 title abstract 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 10
- 239000001301 oxygen Substances 0.000 claims abstract description 10
- 230000001590 oxidative effect Effects 0.000 claims abstract description 8
- 230000003068 static effect Effects 0.000 claims abstract description 3
- 239000003570 air Substances 0.000 claims description 11
- 238000010790 dilution Methods 0.000 claims description 5
- 239000012895 dilution Substances 0.000 claims description 5
- 230000003064 anti-oxidating effect Effects 0.000 abstract description 4
- 238000007254 oxidation reaction Methods 0.000 description 36
- 230000003647 oxidation Effects 0.000 description 35
- 239000000463 material Substances 0.000 description 6
- 239000011159 matrix material Substances 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 208000037656 Respiratory Sounds Diseases 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
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Abstract
The present invention relates to antioxidation technology, and is especially method of raising the medium temperature antioxidation performance of Ti3AlC2. Ti3AlC2 is treated in oxidizing atmosphere at 1000-1300 deg.c for 0.5-4 hr to preoxidize and the said oxidizing atmosphere is static or flowing air, oxygen or diluted oxygen. The said process can produce oxide layer well combined with the base body and without holes and cracks, and this can raise the medium temperature antioxidation performance of Ti3AlC2.
Description
Technical field
The present invention relates to a kind of anti-oxidation tech field, be specially a kind of raising Ti
3AlC
2In the method for warm oxidation-resistance.
Background technology
Ti
3AlC
2Be 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 good high-temperature oxidation resistance, but, make it be very limited as the application of high-temperature structural material because this material is bad in the oxidation-resistance of middle temperature (500-600 ℃).
Though Ti
3AlC
2Has good high-temperature oxidation resistance (Key Eng.Mater.Vol.224-226,785-790 (2002)), but the zone of oxidation that generates in the temperature range of middle temperature (500-600 ℃) owing to this material has tiny crack to make the bad (J.Mater.Chem.Vol.12 of its oxidation-resistance, 2781-2785 (2002)), limit its application as high-temperature structural material.
Summary of the invention
The object of the present invention is to provide a kind of by improving Ti in the high temperature pre-oxidation treatment
3AlC
2Method 500-600 ℃ oxidation-resistance.
Technical scheme of the present invention is with Ti
3AlC
2Place oxidizing atmosphere, treatment temp is 1000～1300 ℃, and preoxidation time is 0.5～4 hour;
Described oxidizing atmosphere is an oxygen static or flowing air, oxygen or dilution; The oxygen partial pressure of described dilution is 10
-5Pa～0.1MPa.
The invention has the beneficial effects as follows:
The present invention compares with the sample that does not pass through pre-oxidation treatment, sample in 1000-1300 ℃ of oxidizing atmosphere after pre-oxidation treatment oxidation gain in weight after 20 hours in air descends significantly, has only about 1/50 of sample that not oxidised handles, and oxidation kinetics is deferred to parabola rule, rather than the straight line rule of the sample of not oxidised processing.This explanation sample after pre-oxidation treatment in 1000-1300 ℃ of oxidizing atmosphere has well long-term oxidation resistant ability, even after 500-600 ℃ of long-time oxidation, zone of oxidation and matrix bond are good, do not find cavity and crackle between zone of oxidation and matrix.
Description of drawings
Fig. 1 is the sem photograph that embodiment 1 preoxidation generates oxide film.
Fig. 2 is embodiment 1 and comparative example oxidation kinetics curve.
Fig. 3 generates the sem photograph of oxide film for comparative example preoxidation.
Fig. 4 is the sem photograph that embodiment 3 preoxidation generate oxide film.
Embodiment
Embodiment 1
Ti
3AlC
2Be exposed in the immobilized air, treatment temp is 1000 ℃, and 2 hours preoxidation (insulation) time, stove is cold, has generated protective oxide film (Fig. 1) after the preoxidation.Increasing weight of oxidation that the preoxidation effect records with thermobalance and the relation of exposure duration are estimated, compare with the sample that not oxidised is handled, the sample of pre-oxidation treatment after two hours gain in weight of 20 hours of oxidation in 600 ℃ of air descends significantly in 1000 ℃ of air, has only 1/50 of sample that not oxidised handles, and oxidation kinetics is deferred to parabola rule, rather than the straight line rule (see figure 2) of the sample of not oxidised processing.This explanation has well oxidation-resistance for a long time at the sample of 1000 ℃ of air after pre-oxidation treatment.
Ti
3AlC
2The method of describing in the patent application (application number is 00123203.7, and publication number is CN1352317A, open day on June 5th, 2002) is adopted in the preparation of block polycrystalline material.
Comparative example
As shown in Figure 3, after 20 hours a large amount of tiny cracks are arranged between zone of oxidation and matrix without sample oxidation in 600 ℃ of air of above-mentioned pre-oxidation treatment, and good among the embodiment 1 through sample zone of oxidation and matrix bond after the pre-oxidation treatment.Without the sample oxidation kinetics curve of above-mentioned pre-oxidation treatment, its weightening finish increases with the increase of oxidization time in 600 ℃ of air, linearly rule as shown in Figure 2.
Embodiment 2
Ti
3AlC
2Be placed in the mobile oxygen, treatment temp is 1100 ℃, preoxidation (insulation) time is 1 hour, stove is cold, compare with the sample that not oxidised is handled, 20 hours the gain in weight of oxidation of the sample in 1100 ℃ of air after the pre-oxidation treatment descends significantly, has only 1/50 of sample that not oxidised handles, and defer to parabola rule, rather than the straight line rule of the sample of not oxidised processing in 20 hours oxidation kinetics of 600 ℃ of oxidations.
Embodiment 3
Ti
3AlC
2Be exposed in the mobile dilution oxygen, its dividing potential drop is 0.1Pa, and treatment temp is 1200 ℃, and preoxidation (insulation) time is 3 hours, and stove is cold, and the protective oxide film that generates after the preoxidation further thickens, and increases weight after 100 hours 600 ℃ of oxidations and has only 0.12mg/cm
2Fig. 4 has provided the Ti of preoxidation after 3 hours in 1200 ℃ of air
3AlC
2At 100 hours fracture stereoscan photograph of 600 ℃ of oxidations.Even long-time (100 hours) oxidation is described, zone of oxidation and matrix bond are good, do not find cavity and crackle between zone of oxidation and matrix.
Claims (3)
1. one kind is improved Ti
3AlC
2In the method for warm oxidation-resistance, it is characterized in that Ti
3AlC
2Place oxidizing atmosphere, treatment temp is 1000～1300 ℃, and preoxidation time is 0.5～4 hour.
2. according to the described raising of claim 1 Ti
3AlC
2In the method for warm oxidation-resistance, it is characterized in that described oxidizing atmosphere is an oxygen static or flowing air, oxygen or dilution.
3. according to the described raising of claim 1 Ti
3AlC
2In the method for warm oxidation-resistance, the oxygen partial pressure that it is characterized in that described dilution is 10
-5Pa～0.1MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02144786 CN1233592C (en) | 2002-12-13 | 2002-12-13 | Method of raising the medium temperature antioxygenation of Ti3AlC2 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02144786 CN1233592C (en) | 2002-12-13 | 2002-12-13 | Method of raising the medium temperature antioxygenation of Ti3AlC2 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1506333A true CN1506333A (en) | 2004-06-23 |
| CN1233592C CN1233592C (en) | 2005-12-28 |
Family
ID=34232115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02144786 Expired - Fee Related CN1233592C (en) | 2002-12-13 | 2002-12-13 | Method of raising the medium temperature antioxygenation of Ti3AlC2 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1233592C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108585895A (en) * | 2018-05-10 | 2018-09-28 | 苏州佳耐材料科技有限公司 | A method of addition ternary compound prepares high-performance magnesia carbon brick |
-
2002
- 2002-12-13 CN CN 02144786 patent/CN1233592C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108585895A (en) * | 2018-05-10 | 2018-09-28 | 苏州佳耐材料科技有限公司 | A method of addition ternary compound prepares high-performance magnesia carbon brick |
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| Publication number | Publication date |
|---|---|
| CN1233592C (en) | 2005-12-28 |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20051228 Termination date: 20100113 |