CN102433520A - ZnWO4-coated aluminum borate whisker-reinforced aluminum matrix composite and preparation method thereof - Google Patents
ZnWO4-coated aluminum borate whisker-reinforced aluminum matrix composite and preparation method thereof Download PDFInfo
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- CN102433520A CN102433520A CN2011104329387A CN201110432938A CN102433520A CN 102433520 A CN102433520 A CN 102433520A CN 2011104329387 A CN2011104329387 A CN 2011104329387A CN 201110432938 A CN201110432938 A CN 201110432938A CN 102433520 A CN102433520 A CN 102433520A
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- aluminum
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- whisker
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Abstract
The invention relates to a ZnWO4-coated aluminum borate whisker-reinforced aluminum matrix composite and a preparation method thereof, belonging to the field of aluminum matrix composites. The invention aims at solving the technical problems that existing aluminum borate whiskers and an aluminum matrix are poorer in wettability of an interface and easy to delaminate, and the aluminum borate whiskers can be reacted with the aluminum matrix for reducing mechanical properties. The product is prepared from zinc tungstate, the aluminum borate whiskers and the aluminum matrix; and the method is as follows: preparing suspension of the aluminum borate whiskers; dripping zinc nitrate solution and sodium tungstate solution in the same molar concentration; and preparing the ZnWO4-coated aluminum borate whisker-reinforced aluminum matrix composite through a pressure infiltration method. The zinc tungstate is coated on the aluminum borate whiskers in the ZnWO4-coated aluminum borate whisker-reinforced aluminum matrix composite for improving the wettability of the whiskers and the matrix. As the zinc tungstate is relatively stable in chemical properties, the occurrence of interface reaction can be prevented and the mechanical properties of the material can be significantly improved. In addition, a ZnWO4 coating has the capability of radiation protection of a high-energy photon beam, so that the aluminum matrix composite disclosed by the invention has the advantages of light weight, high strength and radiation protection property.
Description
Technical field
The invention belongs to the aluminum matrix composite field; Be specifically related to ZnWO
4Apply aluminum boric acid crystal whisker reinforcing aluminum base composite material and preparation method thereof.
Background technology
In space environment, the tough X-radiation that causes that space high-energy electron and space vehicle first wall material production are a large amount of causes the Dose Enhancement Effects of semi-conductor chip to cause losing efficacy, and causes damage for the life entity in the space vehicle simultaneously.In addition, when nuclear blast takes place, a large amount of gamma-rays that the nuclear blast reaction produces, this type ray causes Dose Enhancement Effects to micromanipulator spares a large amount of in the strategic nuclear weapons equally, causes losing efficacy.Space vehicle and strategic nuclear weapons are all to material requirements lightweight, structure-function integration.In order to prevent or to reduce the infringement of space high-energy photon (X and gamma-rays) to the semiconducter device of space vehicle and strategic nuclear weapons, it is urgent day by day that research has the requirement of aluminum matrix composite of high specific strength, high specific stiffness and good radio-protective function.
Some research institutions have successively carried out with WO at present
3And oxide compound such as PbO is radio-protective function phase, is the systematic study work of the preparation with radio-protective function aluminum matrix composite, tissue characterization and the aspect of performance of structure-reinforced phase with aluminium borate whisker.Early-stage Study result finds that there is the obvious problem in three aspects in this type matrix material: 1, oxide compound and matrix reaction, it is more to produce hole, worsens material mechanical performance.2, oxide particle demixing phenomenon occurs in the matrix material that makes, and reduces microstructure of composite performance homogeneity; 3, aluminium borate whisker and aluminum substrate interface wet ability are relatively poor, have reduced whisker load transmission capacity.
To sum up, though existing radio-protective function aluminum matrix composite can satisfy the radio-protective performance demands, because the existence of the problems referred to above has seriously restricted the application of matrix material.
Summary of the invention
The present invention will solve existing aluminium borate whisker and there is relatively poor, the easy layering of interface wet ability in aluminum substrate, with the technical problem of aluminum substrate reaction reduction mechanical property; And ZnWO is provided
4Apply aluminum boric acid crystal whisker reinforcing aluminum base composite material and preparation method thereof.
ZnWO
4Apply aluminum boric acid crystal whisker reinforcing aluminum base composite material by zinc tungstate (ZnWO
4), aluminium borate whisker and aluminum substrate process, wherein aluminium borate whisker accounts for ZnWO
4Apply 10%～40% of aluminum boric acid crystal whisker reinforcing aluminum base composite material total volume fraction, ZnWO
4Quality be 2%～100% of aluminium borate whisker quality.
ZnWO
4The preparation method who applies aluminum boric acid crystal whisker reinforcing aluminum base composite material is undertaken by following step:
Step 1, be aluminium borate whisker to be joined in the zero(ppm) water in 1: 30 by the mass ratio of aluminium borate whisker and zero(ppm) water, ultra-sonic dispersion obtains the suspension liquid of aluminium borate whisker;
The zinc nitrate of volumetric molar concentration such as step 2, preparation (Zn (NO
3)
2) solution and sodium wolframate (Na
2WO
4) solution, then under 180 rev/mins stirring velocity and ultrasound condition by the zinc tungstate quality that generates account for the ceramic phase amount of building up health 2%～100% with zinc nitrate (Zn (NO
3)
2) solution and sodium wolframate (Na
2WO
4) solution drops in the suspension liquid of aluminium borate whisker with identical speed; PH value in the dropping ammonia control dropping process is between 7.5～8.0; Dropwise and continue to handle 5～7 hours, dried in the shade under the physical environment 3～5 days, dried 30 hours down at 50～120 ℃; 700 ℃～1000 ℃ following roastings 1～3 hour, obtain the whisker wild phase then;
Step 3, whisker wild phase and aluminum substrate that step 2 is obtained utilize the pressure method of impregnation to make ZnWO
4Apply aluminum boric acid crystal whisker reinforcing aluminum base composite material; The said ZnWO of step 3
4Apply aluminum boric acid crystal whisker reinforcing aluminum base composite material mesoboric acid aluminium whiskers and account for 10%～40% of total volume fraction.
The present invention is with zinc tungstate (ZnWO
4) be coated on the aluminium borate whisker, improved the wettability of whisker and matrix.Because zinc tungstate (ZnWO
4) chemical property is comparatively stable, can stop the generation of surface reaction, and material mechanical performance is significantly improved, as the ZnWO that applies
4Quality be 20% o'clock of aluminium borate whisker quality, tensile strength has improved 20%, ys has improved 60%.In addition, ZnWO
4Coating has the ability of radio-protective high-energy photon ray, makes aluminum matrix composite of the present invention have lightweight, HS and radio-protective characteristic.
Description of drawings
Fig. 1 does not have zinc tungstate (ZnWO
4) the scanning electron microscopic observation figure of the aluminium borate whisker that applies, Fig. 2 is zinc tungstate (ZnWO
4) the scanning electron microscopic observation figure of the aluminium borate whisker that applies.Fig. 3 is ZnWO
4Apply the X-ray diffraction analysis collection of illustrative plates of aluminum boric acid crystal whisker reinforcing aluminum base composite material, the ZnWO that wherein applies
4Quality is 20% of an aluminium borate whisker quality.Fig. 4 is ZnWO
4Apply the metallograph of aluminum boric acid crystal whisker reinforcing aluminum base composite material.
Embodiment
Technical scheme of the present invention is not limited to following cited embodiment, also comprises the arbitrary combination between each embodiment.
Embodiment one: ZnWO in this embodiment
4Apply aluminum boric acid crystal whisker reinforcing aluminum base composite material by zinc tungstate (ZnWO
4), aluminium borate whisker and aluminum substrate process, wherein aluminium borate whisker accounts for ZnWO
4Apply 10%～40% of aluminum boric acid crystal whisker reinforcing aluminum base composite material total volume fraction, ZnWO
4Quality be 2%～100% of aluminium borate whisker quality.
Embodiment two: what this embodiment and embodiment one were different is: ZnWO
4Quality be 10%～50% of aluminium borate whisker quality.Other is identical with embodiment one.
Embodiment three: what this embodiment and embodiment one were different is: ZnWO
4Quality be 20% of aluminium borate whisker quality.Other is identical with embodiment one.
Embodiment four: what this embodiment and embodiment one were different is: ZnWO
4Quality be 100% of aluminium borate whisker quality.Other is identical with embodiment one.
Embodiment five: what this embodiment was different with one of embodiment one to four is: described aluminum substrate is fine aluminium or duraluminum.Other is identical with one of embodiment one to four.
Embodiment six: this embodiment ZnWO
4The preparation method who applies aluminum boric acid crystal whisker reinforcing aluminum base composite material is undertaken by following step:
ZnWO
4The preparation method who applies aluminum boric acid crystal whisker reinforcing aluminum base composite material is undertaken by following step:
Step 1, be aluminium borate whisker to be joined in the zero(ppm) water in 1: 30 by the mass ratio of aluminium borate whisker and zero(ppm) water, ultra-sonic dispersion obtains the suspension liquid of aluminium borate whisker,
The zinc nitrate of volumetric molar concentration such as step 2, preparation (Zn (NO
3)
2) solution and sodium wolframate (Na
2WO
4) solution, then under 180 rev/mins stirring velocity and ultrasound condition by the zinc tungstate quality that generates account for the ceramic phase amount of building up health 2%～100% with zinc nitrate (Zn (NO
3)
2) solution and sodium wolframate (Na
2WO
4) solution drops in the suspension liquid of aluminium borate whisker with identical speed; PH value in the dropping ammonia control dropping process is between 7.5～8.0; Dropwise and continue to handle 5～7 hours, dried in the shade under the physical environment 3～5 days, dried 30 hours down at 50～120 ℃; 700 ℃～1000 ℃ following roastings 1～3 hour, obtain the whisker wild phase then;
Step 3, whisker wild phase and aluminum substrate that step 2 is obtained utilize the pressure method of impregnation to make ZnWO
4Apply aluminum boric acid crystal whisker reinforcing aluminum base composite material; The said ZnWO of step 3
4Apply aluminum boric acid crystal whisker reinforcing aluminum base composite material mesoboric acid aluminium whiskers and account for 10%～40% of total volume fraction.
Embodiment seven: what this embodiment and embodiment six were different is: the said aluminum substrate of step 3 is fine aluminium or duraluminum.Other step and parameter and embodiment six phase are together.
Embodiment eight: what this embodiment was different with embodiment six or seven is: the said maturing temperature of step 2 is 800 ℃～900 ℃.Other step is identical with embodiment six or seven with parameter.
Embodiment nine: what this embodiment and embodiment eight were different is: the described pressure method of impregnation of step 3 is that Graphite pad is put into die casting, puts into the whisker wild phase that step 2 obtains again, is preheated to 560 ℃ and insulation; Simultaneously aluminium base is heated to fusing and insulation; Then the melting aluminum base material is poured in the die casting, infiltration is solidified under 50MPa pressure again under 5MPa pressure.Other step is identical with embodiment eight with parameter.
Adopt following verification experimental verification invention effect:
Test one: ZnWO
4The preparation method who applies aluminum boric acid crystal whisker reinforcing aluminum base composite material is undertaken by following step:
Step 1, be aluminium borate whisker to be joined in the zero(ppm) water in 1: 30 by the mass ratio of aluminium borate whisker and zero(ppm) water, ultra-sonic dispersion obtains the suspension liquid of aluminium borate whisker,
The zinc nitrate of volumetric molar concentration such as step 2, preparation (Zn (NO
3)
2) solution and sodium wolframate (Na
2WO
4) solution, then under 180 rev/mins stirring velocity and ultrasonic (ultrasonic frequency is 20kHz) condition, by the zinc tungstate quality that generates account for the ceramic phase amount of building up health 20% with zinc nitrate (Zn (NO
3)
2) solution and sodium wolframate (Na
2WO
4) solution drops in the suspension liquid of aluminium borate whisker with identical speed; Between the pH value control 7.5～8.0 in the dropping ammonia control dropping process; Dropwise and continue to handle 5 hours, dried in the shade under the physical environment 5 days, dried 25 hours down at 90 ℃; 750 ℃ of following roastings 2 hours, obtain the whisker wild phase then;
Step 3, whisker wild phase and aluminum substrate that step 2 is obtained utilize the pressure method of impregnation to make ZnWO
4Apply aluminum boric acid crystal whisker reinforcing aluminum base composite material; The said ZnWO of step 3
4Apply aluminum boric acid crystal whisker reinforcing aluminum base composite material mesoboric acid aluminium whiskers and account for 25% of total volume fraction.
Fig. 2-4 can know that aluminium borate whisker is random and uniform distribution in matrix material, does not find that aluminium borate whisker has agglomeration, and it is dispersed in matrix material that this shows that zinc tungstate can't influence whisker.
Claims (9)
1.ZnWO
4Apply aluminum boric acid crystal whisker reinforcing aluminum base composite material, it is characterized in that ZnWO
4The coating aluminum boric acid crystal whisker reinforcing aluminum base composite material is processed by zinc tungstate, aluminium borate whisker and aluminum substrate, and wherein aluminium borate whisker accounts for ZnWO
4Apply 10%～40% of aluminum boric acid crystal whisker reinforcing aluminum base composite material total volume fraction, ZnWO
4Quality be 2%～100% of aluminium borate whisker quality.
2. ZnWO according to claim 1
4Apply aluminum boric acid crystal whisker reinforcing aluminum base composite material, it is characterized in that ZnWO
4Quality be 10%～50% of aluminium borate whisker quality.
3. ZnWO according to claim 1
4Apply aluminum boric acid crystal whisker reinforcing aluminum base composite material, it is characterized in that ZnWO
4Quality be 20% of aluminium borate whisker quality.
4. ZnWO according to claim 1
4Apply aluminum boric acid crystal whisker reinforcing aluminum base composite material, it is characterized in that ZnWO
4Quality be 100% of aluminium borate whisker quality.
5. according to the described ZnWO of each claim in the claim 1～4
4Apply aluminum boric acid crystal whisker reinforcing aluminum base composite material, it is characterized in that described aluminum substrate is fine aluminium or duraluminum.
6.ZnWO
4Apply the preparation method of aluminum boric acid crystal whisker reinforcing aluminum base composite material, it is characterized in that ZnWO
4The preparation method who applies aluminum boric acid crystal whisker reinforcing aluminum base composite material is undertaken by following step:
Step 1, be aluminium borate whisker to be joined in the zero(ppm) water in 1: 30 by the mass ratio of aluminium borate whisker and zero(ppm) water,, ultra-sonic dispersion obtains the suspension liquid of aluminium borate whisker,
The zinc nitrate solution of volumetric molar concentration such as step 2, preparation and sodium tungstate solution; Then under 180 rev/mins stirring velocity and ultrasound condition; Account for 2%～100% of the ceramic phase amount of building up health by the zinc tungstate quality that generates zinc nitrate solution and sodium tungstate solution dropped to identical speed in the suspension liquid of aluminium borate whisker, the pH value in the dropping ammonia control dropping process dropwises continued processing 5～7 hours between 7.5～8.0; Dried in the shade under the physical environment 3～5 days; Dried 30 hours down at 50～120 ℃,, obtain the whisker wild phase then 700 ℃～1000 ℃ following roastings 1～3 hour;
Step 3, whisker wild phase and aluminum substrate that step 2 is obtained utilize the pressure method of impregnation to make ZnWO
4Apply aluminum boric acid crystal whisker reinforcing aluminum base composite material; The said ZnWO of step 3
4Apply aluminum boric acid crystal whisker reinforcing aluminum base composite material mesoboric acid aluminium whiskers and account for 10%～40% of total volume fraction.
7. according to the said ZnWO of claim 6
4Apply the preparation method of aluminum boric acid crystal whisker reinforcing aluminum base composite material, it is characterized in that the said aluminum substrate of step 3 is fine aluminium or duraluminum.
8. according to the said ZnWO of claim 7
4Apply the preparation method of aluminum boric acid crystal whisker reinforcing aluminum base composite material, it is characterized in that the said maturing temperature of step 2 is 800 ℃～900 ℃.
9. according to claim 6,7 or 8 said ZnWO
4Apply the preparation method of aluminum boric acid crystal whisker reinforcing aluminum base composite material, it is characterized in that the described pressure method of impregnation of step 3 is that Graphite pad is put into die casting, put into the whisker wild phase that step 2 obtains again, be preheated to 560 ℃ and insulation; Simultaneously aluminium base is heated to fusing and insulation; Then the melting aluminum base material is poured in the die casting, infiltration is solidified under 50MPa pressure again under 5MPa pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110432938 CN102433520B (en) | 2011-12-21 | 2011-12-21 | ZnWO4-coated aluminum borate whisker-reinforced aluminum matrix composite and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110432938 CN102433520B (en) | 2011-12-21 | 2011-12-21 | ZnWO4-coated aluminum borate whisker-reinforced aluminum matrix composite and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN102433520A true CN102433520A (en) | 2012-05-02 |
| CN102433520B CN102433520B (en) | 2013-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110432938 Expired - Fee Related CN102433520B (en) | 2011-12-21 | 2011-12-21 | ZnWO4-coated aluminum borate whisker-reinforced aluminum matrix composite and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104475702A (en) * | 2014-12-18 | 2015-04-01 | 哈尔滨工业大学 | Preparation method of ZrO2/ hot work die steel composite die material on basis of infiltration connection |
| CN107254644A (en) * | 2017-05-26 | 2017-10-17 | 贵州全世通精密机械科技有限公司 | A kind of high intensity alumina-base material and preparation method thereof |
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|---|---|---|---|---|
| JPH10330866A (en) * | 1997-05-29 | 1998-12-15 | Furukawa Electric Co Ltd:The | Brake disk composed of aluminum matrix composite |
| JP2003246924A (en) * | 2002-02-26 | 2003-09-05 | Dainippon Ink & Chem Inc | Polyarylate composition, polyarylate sheet and electronic material comprising the composition or the sheet |
| US20050183839A1 (en) * | 2003-02-28 | 2005-08-25 | Central Motor Wheel Co., Ltd. | Preform for composite material and aluminum composite material having the preform for composite material and a manufacturing method of the same |
| CN1786250A (en) * | 2005-12-09 | 2006-06-14 | 哈尔滨工业大学 | ZnAl2O4 coated aluminium borate whister reinforced aluminium base or magnesium base composite meterial and its preparation method |
| CN101195885A (en) * | 2007-12-19 | 2008-06-11 | 哈尔滨工业大学 | ZnO coating aluminum boric acid crystal whisker reinforcing aluminum base composite material and method for producing the same |
-
2011
- 2011-12-21 CN CN 201110432938 patent/CN102433520B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10330866A (en) * | 1997-05-29 | 1998-12-15 | Furukawa Electric Co Ltd:The | Brake disk composed of aluminum matrix composite |
| JP2003246924A (en) * | 2002-02-26 | 2003-09-05 | Dainippon Ink & Chem Inc | Polyarylate composition, polyarylate sheet and electronic material comprising the composition or the sheet |
| US20050183839A1 (en) * | 2003-02-28 | 2005-08-25 | Central Motor Wheel Co., Ltd. | Preform for composite material and aluminum composite material having the preform for composite material and a manufacturing method of the same |
| CN1786250A (en) * | 2005-12-09 | 2006-06-14 | 哈尔滨工业大学 | ZnAl2O4 coated aluminium borate whister reinforced aluminium base or magnesium base composite meterial and its preparation method |
| CN101195885A (en) * | 2007-12-19 | 2008-06-11 | 哈尔滨工业大学 | ZnO coating aluminum boric acid crystal whisker reinforcing aluminum base composite material and method for producing the same |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104475702A (en) * | 2014-12-18 | 2015-04-01 | 哈尔滨工业大学 | Preparation method of ZrO2/ hot work die steel composite die material on basis of infiltration connection |
| CN104475702B (en) * | 2014-12-18 | 2016-08-24 | 哈尔滨工业大学 | The ZrO connected based on infiltration2the preparation method of/hot die steel composite die material |
| CN107254644A (en) * | 2017-05-26 | 2017-10-17 | 贵州全世通精密机械科技有限公司 | A kind of high intensity alumina-base material and preparation method thereof |
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|---|---|
| CN102433520B (en) | 2013-04-10 |
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