CN101942594B - Aluminium alloys, pumice-ferric oxide and vermiculite-barium ferrate composite material and preparation method thereof - Google Patents
Aluminium alloys, pumice-ferric oxide and vermiculite-barium ferrate composite material and preparation method thereof Download PDFInfo
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- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 title claims abstract description 51
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 27
- 238000002360 preparation method Methods 0.000 title claims abstract description 27
- 239000002131 composite material Substances 0.000 title claims abstract description 23
- 239000000126 substance Substances 0.000 claims abstract description 3
- 239000004575 stone Substances 0.000 claims description 98
- 239000010455 vermiculite Substances 0.000 claims description 77
- 229910052902 vermiculite Inorganic materials 0.000 claims description 77
- 235000019354 vermiculite Nutrition 0.000 claims description 73
- 239000000203 mixture Substances 0.000 claims description 65
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 claims description 44
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 39
- QVQLCTNNEUAWMS-UHFFFAOYSA-N barium oxide Chemical compound [Ba]=O QVQLCTNNEUAWMS-UHFFFAOYSA-N 0.000 claims description 37
- 229910052788 barium Inorganic materials 0.000 claims description 35
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 claims description 35
- 239000011159 matrix material Substances 0.000 claims description 34
- 229910052742 iron Inorganic materials 0.000 claims description 19
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 18
- 229910045601 alloy Inorganic materials 0.000 claims description 16
- 239000000956 alloy Substances 0.000 claims description 16
- 238000003756 stirring Methods 0.000 claims description 16
- 229910052782 aluminium Inorganic materials 0.000 claims description 14
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 14
- 239000007788 liquid Substances 0.000 claims description 13
- 238000001816 cooling Methods 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 229910000737 Duralumin Inorganic materials 0.000 claims description 11
- IMBKASBLAKCLEM-UHFFFAOYSA-L ferrous ammonium sulfate (anhydrous) Chemical compound [NH4+].[NH4+].[Fe+2].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O IMBKASBLAKCLEM-UHFFFAOYSA-L 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 10
- 229910052745 lead Inorganic materials 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 10
- 229910052710 silicon Inorganic materials 0.000 claims description 10
- 229910052715 tantalum Inorganic materials 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000008187 granular material Substances 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 229910002651 NO3 Inorganic materials 0.000 claims description 8
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims description 8
- 229910001864 baryta Inorganic materials 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 7
- 229910052733 gallium Inorganic materials 0.000 claims description 7
- 238000009413 insulation Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 4
- 239000004809 Teflon Substances 0.000 claims description 3
- 229920006362 Teflon® Polymers 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 238000013016 damping Methods 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 7
- 239000002245 particle Substances 0.000 description 7
- 229910000859 α-Fe Inorganic materials 0.000 description 7
- 230000005294 ferromagnetic effect Effects 0.000 description 5
- 239000011358 absorbing material Substances 0.000 description 4
- 239000004411 aluminium Substances 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 4
- 239000008262 pumice Substances 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 239000012467 final product Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005291 magnetic effect Effects 0.000 description 2
- 239000002905 metal composite material Substances 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- HZEWFHLRYVTOIW-UHFFFAOYSA-N [Ti].[Ni] Chemical compound [Ti].[Ni] HZEWFHLRYVTOIW-UHFFFAOYSA-N 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004070 electrodeposition Methods 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910001000 nickel titanium Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 229910001285 shape-memory alloy Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
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Abstract
The invention provides an aluminium alloys, pumice-ferric oxide and vermiculite-barium ferrate composite material and a preparation method thereof. The composite material has high absorbing property and excellent damping property. The preparation method is simple in process, low in production cost and suitable for industrialized production. The composite material takes the aluminium alloys as the matrices and the pumice-ferric oxide and vermiculite-barium ferrate compounds are distributed on the matrices. The pumice-ferric oxide and vermiculite-barium ferrate compounds account for 40-50% of the composite material by volume. The aluminium alloy matrices comprise the following chemical components in percentage by weight: 3-6% of Mg, 0.005-0.01% of Pb, 0.001-0.005% of Ta, 0.001-0.005% of Ga, 0.5-1% of Si and the balance Al.
Description
One, technical field
The invention belongs to metal material field, relate to a kind of aluminum alloy-pumice ferric oxide, vermiculite and barium ferric oxide and inhale ripple vibration damping composite material and preparation method thereof and preparation method thereof.
Two, background technology
Belong at present in the field of materials, the suction ripple damping effect of material has been received attention.
CN200410023374.1 relates to a kind of aluminium base absorbing material and preparation method thereof; It is characterized in that: adopt direct current or one step of alternating-current or two-step anodic oxidization method to form multiaperture pellumina on aluminum or aluminum alloy plate top layer; Process aluminium-based porous alumina formwork, i.e. the AAO template; Adopt direct current or pulsed current electrochemical deposition in aluminium base AAO porous-film, to assemble the magnetic Nano array of metal lines, process the aluminium base absorbing material of top layer assemble in situ magnetic Nano linear array.The shortcoming of this method is that the requirement technical difficulty is high.
CN200910071958.9 proposes ceramic whisker/ferromagnetic metal composite wave-absorbing material and preparation method thereof, and it relates to a kind of electromagnetic-power-absorbing composite and preparation method thereof that is used for.The ceramic whisker that the surface is coated with ferromagnetic metal coating is that 300～400 ℃, heat-treating atmosphere are thermal treatment 60 minutes under the condition of hydrogen or argon gas in temperature, promptly gets ceramic whisker/ferromagnetic metal composite wave-absorbing material.The shortcoming of this method is that ceramic whisker surface is coated with ferromagnetic metal coating, and ferromagnetic metal is prone to come off in the processing.
CN200810219444.9 discloses a kind of preparation method of particle reinforced damping porous nickel-titanium memory alloy based composite material.Adopt the step powder sintering; The silicon or the alumina particle of nickel, titanium metal powder and controlled material are pressed into green compact behind the uniform mixing by a certain percentage; Silicon grain or alumina particle account for 5～15% of green compact weight, take step type of heating Integratively sintering and make matrix material.The shortcoming of this material is that absorbing property is poor.
Three, summary of the invention
The object of the invention is exactly to above-mentioned technological deficiency, and a kind of aluminum alloy-pumice ferric oxide, vermiculite and barium ferric oxide composite material is provided, and this matrix material absorbing property is high, and has superior damping capacity.
Another object of the present invention provides the preparation method of aluminum alloy-pumice ferric oxide, vermiculite and barium ferric oxide composite material, and this preparing method's technology is simple, and production cost is low, is suitable for suitability for industrialized production.
The objective of the invention is to realize through following technical scheme:
A kind of Al-alloy based float stone ferric oxide, vermiculite and barium ferric oxide composite material, this matrix material is a matrix with the duraluminum, the float stone red stone that on matrix, distributing and vermiculite and barium ferric oxide mixture; Float stone red stone and vermiculite and barium ferric oxide mixture account for the 40-50% of matrix material volume;
The following chemical components in percentage by weight of this alloy matrix aluminum: Mg is 3%～6%, and Pb is 0.005%～0.01%, and Ta is 0.001%～0.005%, and Ga is 0.001%～0.005%, and Si is 0.5%-1%, and all the other are Al;
Float stone red stone mixture is that red stone pierces in the float stone hole, and to form a layer thickness at the hole wall be 0.1-10 μ m film; The vermiculite and barium ferric oxide mixture is that barium ferric oxide pierces in the hole of vermiculite, and to form a layer thickness at the hole wall be 0.1-10 μ m film.
A kind of preparation method of Al-alloy based float stone ferric oxide, vermiculite and barium ferric oxide composite material is characterized in that: it may further comprise the steps:
A. the preparation of vermiculite and barium ferric oxide mixture:
With iron(ic)chloride, nitrate of baryta and Hydrocerol A with 1: (5-10): ratio (5-20), be dissolved in water (add less water to dissolving get final product), put into vermiculite then; At 80 ℃ of stirred in water bath 10-20min; Vermiculite granule is of a size of 0.1-0.5mm, and the weight ratio of three's mixing solutions and vermiculite is (5-10): 1, after stirring finishes; With stirring naturally cooling behind the baking oven insulation 30min that thing places 120 ℃; And then put into 550-590 ℃ baking oven, naturally cooling behind the insulation 30min obtains the vermiculite and barium ferric oxide mixture;
B. the preparation of float stone red stone mixture:
Pack iron(ic)chloride and ferrous ammonium sulphate in the hydro-thermal container of being with teflon lined into again; (adding less water to dissolving gets final product) is dissolved in water; Reinstall float stone, the float stone particulate is of a size of 0.6-1mm, stirs above three kinds of materials and reaches 5-10min; Three kinds of material iron(ic)chloride, ferrous ammonium sulphate and pumiceous weight ratios are 1: 1: (1-2), naturally cooling just obtains float stone red stone mixture after will stirring baking oven that thing places 220 ℃ after stir finishing and being incubated 3h;
C. the cavity of steel die of then vermiculite and barium ferric oxide mixture and float stone red stone mixture being put into the logical vacuum system in bottom of heating unit forms the mixture precast body; The weight ratio of vermiculite-iron oxide and float stone barium oxide mixture is 1: (1-2), control mixture precast body accounts for the 40-50% of metal die cavity volume; Open heating unit, controlled temperature 480-520 ℃;
D. the preparation of aluminum alloy melt: with weight percentage is that Mg is 3%～6%, and Pb is 0.005%～0.01%, and Ta is 0.001%～0.005%; Ga is 0.001%～0.005%; Si is 0.5%-1%, and all the other are the raw material of Al, under 680-720 ℃ of temperature, is fused into alloy liquid;
E. open vacuum system; The relative vacuum degree of controlling in the above-mentioned steel die is-30Kpa, with above-mentioned alloy liquid pour into mixture precast body in the steel die cavity above, and fill with mould; Duraluminum liquid infiltrates the gap in the mixture precast body under the vacuum pressure effect; The closing molding heating unit, alloy liquid solidifies at the mould internal cooling, forms Al-alloy based float stone red stone vermiculite barium oxide matrix material.
It is following that the present invention compares the beneficial effect of prior art:
Float stone and vermiculite space are big among the present invention, are easy to admit ferrite, and ferrite is in the space of pumice-vermiculite, form the float stone red stone vermiculite barium oxide mixture that ferrite can not be scattered, thereby become matrix material and absorb electromagnetic solid material center; Iron and ba oxide composite wave-absorbing, effect strengthens than single ferrite.Wherein ferrite or title red stone are Fe
3O
4, barium oxysome or title barium oxide are BaO.
Ferrite is in the space of pumice-vermiculite, does not contact with duraluminum liquid, therefore can not cause the oxidation of duraluminum;
Si in the duraluminum and Pb can promote duraluminum to combine with the interface of pumice-vermiculite.But the particle of the Ta reinforced aluminium alloy in the duraluminum, the intensity of raising matrices of composite material.Solid float stone red stone vermiculite barium oxide mixture can improve the compressive property of Al alloy composite.These can both improve the mechanical property of Al-alloy based float stone red stone vermiculite barium oxide matrix material.
Alloy property of the present invention is seen table 1.
The pumice-vermiculite space is big, is easy to admit ferrite, and therefore stirring and heat-up time are all short, with short production cycle in the preparation.
Composite material preparation process is easy, and the matrix material of production has certain excellent damping performance, and absorbing property is superior simultaneously, and production cost is low, is convenient to very much suitability for industrialized production.
Four, description of drawings
The metallographic structure of the Al-alloy based float stone ferric oxide, vermiculite and barium ferric oxide composite material that Fig. 1 makes for the embodiment of the invention one.
Can see by Fig. 1 and on alloy matrix aluminum, to be distributed with the float stone ferric oxide, vermiculite and barium ferric oxide composite material.
Five, embodiment
Below each embodiment only with of the present invention the explaining of opposing, weight percent wherein all can change weight g, kg or other weight unit into.
Embodiment one:
The preparation process of the Al-alloy based float stone ferric oxide, vermiculite and barium ferric oxide composite material of the present invention is following:
A. the preparation of vermiculite and barium ferric oxide mixture:
With iron(ic)chloride, nitrate of baryta and Hydrocerol A ratio, be dissolved in water (add less water to dissolving and get final product, also can be described as solution) with 1: 5: 5; Put into vermiculite then, at 80 ℃ of stirred in water bath 10-20min, vermiculite granule is of a size of 0.1-0.3mm; The weight ratio of three's mixing solutions and vermiculite is 5: 1; After stir finishing, with stirring naturally cooling behind the baking oven insulation 30min that thing places 120 ℃, and then put into 560-570 ℃ baking oven; Naturally cooling behind the insulation 30min obtains the vermiculite and barium ferric oxide mixture;
B. the preparation of float stone red stone mixture:
Pack iron(ic)chloride and ferrous ammonium sulphate in the hydro-thermal container of being with teflon lined into again; Be dissolved in water; Reinstall float stone, the float stone particulate is of a size of 0.6-8mm, stirs above three kinds of materials and reaches 5-10min; Three kinds of material iron(ic)chloride, ferrous ammonium sulphate and pumiceous weight ratios are 1: 1: 1, and naturally cooling just obtains float stone red stone mixture after will stirring baking oven that thing places 220 ℃ after stir finishing and being incubated 3h;
C. the cavity of steel die of then vermiculite and barium ferric oxide mixture and float stone red stone mixture being put into the logical vacuum system in bottom of heating unit forms the mixture precast body; The weight ratio of vermiculite and barium ferric oxide mixture and float stone oxygen iron mixture is 1: 1, and control mixture precast body accounts for the 40-50% (can control the volume percent 40-50% that compound precast body accounts for matrix material thus) of metal die cavity volume; Open heating unit, controlled temperature 480-520 ℃.
D. the preparation of aluminum alloy melt: with weight percentage is that Mg is 3%, and Pb is 0.005%, and Ta is 0.001%, and Ga is 0.001%, and Si is 0.5%, and all the other are the raw material of Al, under 680-720 ℃ of temperature, are fused into alloy liquid;
E. open vacuum system; The relative vacuum degree of controlling in the above-mentioned steel die is-30Kpa, with above-mentioned alloy liquid pour into mixture precast body in the steel die cavity above, and fill with mould; Duraluminum liquid infiltrates the gap in the mixture precast body under the vacuum pressure effect; The closing molding heating unit, alloy liquid solidifies at the mould internal cooling, forms Al-alloy based float stone red stone vermiculite barium oxide matrix material.
Embodiment two
The vermiculite and barium ferric oxide mixture is prepared: the weight ratio of iron(ic)chloride, nitrate of baryta and Hydrocerol A is 1: 10: 20 in the solution, and vermiculite granule is of a size of 0.5mm, and the weight ratio of solution and vermiculite is 10: 1;
Float stone red stone mixture is prepared: iron(ic)chloride, ferrous ammonium sulphate and pumiceous weight ratio are 1: 1: 2 in the solution, and the float stone particulate is of a size of 1mm;
The mixture precast body is prepared: the weight ratio of vermiculite and barium ferric oxide and float stone red stone mixture is 1: 2; Controlling the volume percent that compound precast body accounts for matrix material is 50%;
The weight percentage of alloy matrix aluminum composition is that Mg is 6%, and Pb is 0.01%, and Ta is 0.005%, and Ga is 0.005%, and Si is 1%, and all the other are Al.
Embodiment three:
The vermiculite and barium ferric oxide mixture is prepared: the weight ratio of iron(ic)chloride, nitrate of baryta and Hydrocerol A is 1: 7: 10 in the used solution, and vermiculite granule is of a size of 0.3mm, and the weight ratio of solution and vermiculite is 7: 1;
Float stone red stone mixture is prepared: iron(ic)chloride, ferrous ammonium sulphate and pumiceous weight ratio are 1: 1: 1.5 in the used solution, and the float stone particulate is of a size of 0.6-1mm;
The mixture precast body is prepared: the weight ratio of vermiculite and barium ferric oxide and float stone red stone mixture is 1: 1.5; The volume percent that control mixture ready-formed accounts for matrix material is 40%;
The weight percentage of aluminum alloy melt is that Mg is 4%, and Pb is 0.008%, and Ta is 0.003%, and Ga is 0.003%, and Si is 0.5%-1%, and all the other are Al.
Embodiment four: (proportioning raw materials is the instance in ratio range of the present invention not)
The vermiculite and barium ferric oxide mixture is prepared: the weight ratio of iron(ic)chloride, nitrate of baryta and Hydrocerol A is 1: 4: 4 in the used solution, and vermiculite granule is of a size of 0.05mm, and the weight ratio of solution and vermiculite is 4: 1;
Float stone red stone mixture is prepared: iron(ic)chloride, ferrous ammonium sulphate and pumiceous weight ratio are 1: 1: 0.8 in the used solution, and the float stone particulate is of a size of 0.5mm;
The mixture precast body is prepared: the weight ratio of vermiculite and barium ferric oxide and float stone red stone mixture is 1: 0.8; The volume percent that float stone red stone vermiculite barium oxide accounts for matrix material is 40-50%;
The weight percentage of each composition of aluminum alloy melt is that Mg is 2%, and Pb is 0.04%, and Ta is 0.0009%, and Ga is 0.0009%, and Si is 0.2%, and all the other are Al.
Embodiment five: (proportioning raw materials is the instance in ratio range of the present invention not)
The vermiculite and barium ferric oxide mixture is prepared: the weight ratio of iron(ic)chloride, nitrate of baryta and Hydrocerol A is 1: 11: 21 in the used solution, and vermiculite granule is of a size of 0.6mm, and the weight ratio of solution and vermiculite is 11: 1;
Float stone red stone mixture is prepared: iron(ic)chloride, ferrous ammonium sulphate and pumiceous weight ratio are 1: 1: 2.1 in the used solution, and the float stone particulate is of a size of 1.1mm;
The mixture precast body is prepared: the weight ratio of vermiculite and barium ferric oxide and float stone red stone mixture is 1: 2.1; The volume percent that the mixture precast body accounts for matrix material is 40-50%;
The weight percentage of aluminum alloy melt composition is that Mg is 7%, and Pb is 0.02%, and Ta is 0.006%, and Ga is 0.006%, and Si is 1.2%, and all the other are Al.
Following table is the alloy property synopsis of different components and proportioning:
Table 1
Al-alloy based float stone red stone vermiculite barium oxide matrix material, the particle size of float stone mixture is too small, has both reduced suction ripple unit, has reduced suction intensity of wave and vibration damping intensity, is unfavorable for the matrix material manufacturing again; The particle size of mixture is excessive, inhales the ripple unit and increases, and has reduced to inhale the unitary quantity of ripple in the unit matrix material volume, also is unfavorable for inhaling ripple and vibration damping.
During Al-alloy based float stone red stone vermiculite barium oxide Composite Preparation, vermiculite float stone quantity is too small, and iron(ic)chloride, nitrate of baryta, ferrous ammonium sulphate etc. are difficult for all getting into vermiculite float stones gaps, and the total red stone quantity of matrix material is few, inhales a little less than the intensity of wave; Vermiculite float stone quantity is too much, be difficult for to form perfect matrix material, and the red stone quantity of holding in the vermiculite float stone gap is few, inhale intensity of wave also a little less than.
During Al-alloy based float stone red stone vermiculite barium oxide Composite Preparation; Vermiculite quantity is very few or vermiculite granule is too small; At a distance from not opening vermiculite float stone particle; Be unfavorable for the infiltration of duraluminum liquid, vermiculite quantity is too much or vermiculite granule is excessive, can influence the mechanical property of Al-alloy based float stone red stone vermiculite barium oxide matrix material.
Ti in the alloy matrix aluminum, Ta, Si, Pb are in the application's scope, and matrix material has good performance.These elements exceed the application's ratio range, and frangible compounds quantity is many, and duraluminum is difficult to be combined with vermiculite float stone interface, and the mechanical property of titanium alloy self reduces, and also reduces the wave absorbtion and the vibration damping property of matrix material greatly.
Claims (1)
1. Al-alloy based float stone ferric oxide, vermiculite and barium ferric oxide composite material, this matrix material is a matrix with the duraluminum, the float stone red stone that on matrix, distributing and vermiculite and barium ferric oxide mixture; The two accounts for the 40-50% of matrix material volume float stone red stone and vermiculite and barium ferric oxide mixture;
The following chemical components in percentage by weight of alloy matrix aluminum: Mg is 3%～6%, and Pb is 0.005%～0.01%, and Ta is 0.001%～0.005%, and Ga is 0.001%～0.005%, and Si is 0.5%-1%, and all the other are Al;
Its preparation process may further comprise the steps:
A. the preparation of vermiculite and barium ferric oxide mixture:
With iron(ic)chloride, nitrate of baryta and Hydrocerol A with 1: (5-10): ratio (5-20), be dissolved in water, put into vermiculite then; At 80 ℃ of stirred in water bath 10-20min, vermiculite granule is of a size of 0.1-0.5mm, and the weight ratio of three's mixing solutions and vermiculite is (5-10): 1; After stir finishing, with stirring naturally cooling behind the baking oven insulation 30min that thing places 120 ℃, and then put into 550-590 ℃ baking oven; Naturally cooling behind the insulation 30min obtains the vermiculite and barium ferric oxide mixture;
B. the preparation of float stone red stone mixture:
Pack iron(ic)chloride and ferrous ammonium sulphate in the hydro-thermal container of being with teflon lined into; Be dissolved in water; Reinstall float stone, the float stone particulate is of a size of 0.6-1mm, stirs above three kinds of materials and reaches 5-10min; Three kinds of material iron(ic)chloride, ferrous ammonium sulphate and pumiceous weight ratios are 1: 1: (1-2), naturally cooling just obtains float stone red stone mixture after will stirring baking oven that thing places 220 ℃ after stir finishing and being incubated 3h;
C. the cavity of steel die of then vermiculite and barium ferric oxide mixture and float stone red stone mixture being put into the logical vacuum system in bottom of heating unit forms the mixture precast body; The weight ratio of vermiculite-iron oxide and float stone barium oxide mixture is 1: (1-2), control mixture precast body accounts for the 40-50% of metal die cavity volume; The opening mold heating unit, controlled temperature 480-520 ℃;
D. the preparation of aluminum alloy melt: with weight percentage is that Mg is 3%～6%, and Pb is 0.005%～0.01%, and Ta is 0.001%～0.005%; Ga is 0.001%～0.005%; Si is 0.5%-1%, and all the other are the raw material of Al, under 680-720 ℃ of temperature, is fused into alloy liquid;
E. open vacuum system; The relative vacuum degree of controlling in the above-mentioned steel die is-30Kpa, with above-mentioned alloy liquid pour into mixture precast body in the steel die cavity above, and fill with mould; Aluminum alloy melt infiltrates the gap in the mixture precast body under the vacuum pressure effect; The closing molding heating unit, alloy liquid solidifies at the mould internal cooling, forms Al-alloy based float stone red stone vermiculite barium oxide matrix material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102203356A CN101942594B (en) | 2010-07-06 | 2010-07-06 | Aluminium alloys, pumice-ferric oxide and vermiculite-barium ferrate composite material and preparation method thereof |
Applications Claiming Priority (1)
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| CN1715458A (en) * | 2004-06-30 | 2006-01-04 | 中南大学 | Aliminium base wave absorbing material and preparing method |
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| CN1715458A (en) * | 2004-06-30 | 2006-01-04 | 中南大学 | Aliminium base wave absorbing material and preparing method |
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