CN101942623B - Magnesium alloy vermiculite pumice ferric oxide composite material and preparation method thereof - Google Patents
Magnesium alloy vermiculite pumice ferric oxide composite material and preparation method thereof Download PDFInfo
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- CN101942623B CN101942623B CN2010102203479A CN201010220347A CN101942623B CN 101942623 B CN101942623 B CN 101942623B CN 2010102203479 A CN2010102203479 A CN 2010102203479A CN 201010220347 A CN201010220347 A CN 201010220347A CN 101942623 B CN101942623 B CN 101942623B
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Abstract
The invention provides a magnesium alloy vermiculite pumice ferric oxide composite material and a preparation method thereof. The composite material has high microwave-absorbing performance and excellent damping performance. The preparation method has simple process and low production cost and is suitable for industrialized production. The composite material takes a magnesium alloy as a substrate, a vermiculite pumice ferric oxide compound and titanium fiber are distributed on the substrate, and each compound particle is 0.5-1mm; the vermiculite pumice ferric oxide compound and the titanium fiber are 45-55 percent by volume of the composite material; the magnesium alloy substrate is prepared from the following chemical components in percentage by weight: 0.3-0.8 percent of Ti, 0.01-0.05 percent of Th, 0.5-1 percent of Si and the balance of Al; and the titanium fiber is prepared from the components in percentage by weight: 0.003-0.09 percent of Cu, 0.003-0.09 percent of Sm and the balance of Ti.
Description
One, technical field
The invention belongs to metal material field, relate to a kind of duraluminum vermiculite float stone ferric oxide 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, provides a kind of duraluminum vermiculite float stone red stone to inhale the ripple vibration damping composite material, and this matrix material absorbing property is high, and has superior damping capacity.
Another object of the present invention provides the preparation method that duraluminum vermiculite float stone red stone is inhaled the ripple vibration damping 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 vermiculite float stone ferric oxide composite material, this matrix material is a matrix with the duraluminum, on matrix, distributing vermiculite float stone red stone mixture and titanium fiber, the particle of mixture is 0.5-1mm;
The following chemical components in percentage by weight of this alloy matrix aluminum: Ti is 0.3%～0.8%, and Th is 0.01%～0.05%, and Si is 0.5%-1%, and all the other are Al;
It is 0.003%-0.09% that the weight percent of this each composition of titanium fiber contains Cu, and Sm is 0.003%-0.09%, and all the other are Ti;
Vermiculite float stone red stone mixture is that red stone pierces in vermiculite and the pumiceous hole, and to form a layer thickness at the hole wall be 0.1-10 μ m film.
The preparation method of the Al-alloy based vermiculite float stone of the present invention ferric oxide composite material, it may further comprise the steps:
A. the preparation of vermiculite float stone red stone mixture: pack iron(ic)chloride and ferrous ammonium sulphate in the hydro-thermal container of being with teflon lined into earlier; (adding less water to dissolving gets final product) is dissolved in water; Reinstall vermiculite and float stone, the float stone particulate is of a size of 0.5-1mm, and vermiculite granule is of a size of 0.05-0.3mm; Vermiculite and pumiceous weight ratio are (0.01-0.1): 1; Stir above material and reach 2-7min, the weight ratio of iron(ic)chloride, ferrous ammonium sulphate and vermiculite float stone mixture is 1: 1: (1-2), naturally cooling just obtains vermiculite float stone red stone mixture after will stirring baking oven that thing places 220 ℃ after stir finishing and being incubated 3h;
B. the preparation of titanium fiber: to contain Cu be 0.003%-0.09% to percentage by weight, and Sm is 0.003%-0.09%, and all the other are prepared burden for Ti, and raw material places fusing in the riser pipe that has heating unit and forms iron alloy liquid; The riser pipe bottom is set with plunger; Plunger can move along riser pipe is upper and lower under PWR PLT drive, and can liquid level in the riser pipe be raised when moving on the plunger, thereby be convenient to the runner flange alloy liquid is extracted; Form the titanium fiber, runner adopts wheel rim that the water-cooled copper alloy runner of flange is arranged.) alloy liquid contacts with the water-cooled copper alloy runner flange of rotation through riser pipe, water-cooled copper alloy runner runner flange is extracted alloy liquid, formation alloy material fiber, and the LV of runner flange is 19-21m/s, the diameter of titanium fiber is 10-45 μ m; Runner is opened the runner water-cooling system before opening and changeing, and the water-cooling system inflow temperature is less than 30 ℃;
C. be that the cavity of the steel die of 7: 1 titanium fiber and the vermiculite float stone red stone mixture logical vacuum system in bottom of putting into heating unit forms the mixture precast body with (intercepting) length-to-diameter ratio then; Titanium fiber and vermiculite float stone red stone mixture weight ratio are 2%; (delete: open water-cooling system; The control inflow temperature is 20-30 ℃) control mixture precast body accounts for the 45-55% of metal die cavity volume;
D. the preparation of aluminum alloy melt: with weight percentage is that Ti is 0.3%～0.8%, and Th is 0.01%～0.05%, and Si is 0.5%-1%, 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 duraluminum liquid pour into mixture precast body in the steel die cavity above; And fill with mould, and duraluminum liquid infiltrates the gap in the mixture precast body under the vacuum pressure effect, and alloy liquid solidifies at the mould internal cooling and forms Al-alloy based vermiculite float stone ferric oxide composite material.
It is following that the present invention compares the beneficial effect of prior art:
Vermiculite among the present invention, float stone space are big, are easy to admit red stone, and red stone is in the pumiceous space of vermiculite, forms the vermiculite float stone red stone mixture that red stone can not be scattered, thereby become matrix material and absorb electromagnetic solid material center; Float stone void ratio vermiculite is big, and float stone is got more red stone, and vermiculite is got less red stone, so the combination of vermiculite and float stone has bigger absorption of electromagnetic wave scope.Its red stone is Fe
3O
4
Be convenient to different with the float stone size of vermiculite distributes alternately, and is beneficial to the infiltration of duraluminum.
Red stone is in the pumiceous space of vermiculite, not in the contact of duraluminum liquid, therefore can not cause the oxidation of duraluminum;
Si in the duraluminum can promote the pumiceous interface of duraluminum and vermiculite to combine.Ti in the duraluminum and Th can reduce the particle of duraluminum, improve the intensity of matrices of composite material.Solid vermiculite float stone red stone mixture can improve the compressive property of Al alloy composite.These can both improve the mechanical property of Al-alloy based vermiculite float stone ferric oxide composite material.
The effect of titanium fiber is the intensity that improves matrices of composite material.
Alloy property of the present invention is seen table 1.
Vermiculite float stone space is big, is easy to admit red stone, 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 vermiculite float stone 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 vermiculite float stone red stone complex body.
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 vermiculite float stone of the present invention ferric oxide composite material is following:
The preparation of a vermiculite float stone red stone mixture: pack iron(ic)chloride and ferrous ammonium sulphate in the hydro-thermal container of being with teflon lined into earlier; (adding less water to dissolving gets final product) is dissolved in water; Reinstall vermiculite and float stone, the float stone particulate is of a size of 0.5mm, and vermiculite granule is of a size of 0.05mm; Vermiculite and pumiceous weight ratio are 0.01: 1; Stir above material and reach 2-7min, the weight ratio of iron(ic)chloride, ferrous ammonium sulphate and vermiculite float stone mixture is 1: 1: 1, and naturally cooling just obtains vermiculite float stone red stone mixture after will stirring baking oven that thing places 220 ℃ after stir finishing and being incubated 3h;
The preparation of b titanium fiber: to contain Cu be 0.003%-0.09% to percentage by weight, and Sm is 0.003%-0.09%, and all the other are prepared burden for Ti, and raw material places fusing in the riser pipe that has heating unit and forms iron alloy liquid; The riser pipe bottom is set with plunger; Plunger can move along riser pipe is upper and lower under PWR PLT drive, and can liquid level in the riser pipe be raised when moving on the plunger, thereby be convenient to the runner flange alloy liquid is extracted; Form the titanium fiber, runner adopts wheel rim that the water-cooled copper alloy runner of flange is arranged.Alloy liquid contacts with the water-cooled copper alloy runner flange of rotation through riser pipe, and water-cooled copper alloy runner runner flange is extracted alloy liquid, forms the alloy material fiber, and the LV of runner flange is 19-21m/s, and the diameter of titanium fiber is 10-45 μ m; Runner is opened the runner water-cooling system before opening and changeing, and the water-cooling system inflow temperature is less than 30 ℃;
C is that the cavity of the steel die of 7: 1 titanium fiber and the vermiculite float stone red stone mixture logical vacuum system in bottom of putting into heating unit forms the mixture precast body with (intercepting) length-to-diameter ratio then; Titanium fiber and vermiculite float stone red stone mixture weight ratio are 2%, and control mixture precast body accounts for the 45-55% (may command mixture precast body accounts for the volume percent of matrix material thus) of metal die cavity volume;
The preparation of d aluminum alloy melt: with weight percentage Ti is 0.3%, and Th is 0.01%, and Si is 0.5%, 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 mold heated to 480 ℃, with above-mentioned duraluminum 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, alloy liquid mould internal cooling solidifies and forms Al-alloy based vermiculite float stone ferric oxide composite material.
Embodiment two:
During preparation vermiculite float stone red stone mixture, vermiculite and pumiceous weight ratio are 0.1: 1; The weight ratio of iron(ic)chloride, ferrous ammonium sulphate and vermiculite float stone mixture is 1: 1: 2, and the float stone particulate is of a size of 1mm, and vermiculite granule is of a size of 0.3mm,
The preparation of titanium fiber: to contain Cu be 0.09% to percentage by weight, and Sm is 0.03%, and all the other are prepared burden for Ti,
When compound precast body was prepared, control mixture precast body accounted for 45% of metal die cavity volume;
The preparation of aluminum alloy melt: each composition percentage composition Ti by weight is 0.8%, and Th is 0.05%, and Si is 1%, and all the other are prepared burden for Al;
The preparation process is with embodiment one.
Embodiment three:
During preparation vermiculite float stone red stone mixture, vermiculite and pumiceous weight ratio are 0.05: 1; The weight ratio of iron(ic)chloride, ferrous ammonium sulphate and vermiculite float stone mixture is 1: 1: 1.5, and the float stone particulate is of a size of 0.7mm, and vermiculite granule is of a size of 0.07mm,
The preparation of titanium fiber: to contain Cu be 0.003%-0.09% to percentage by weight, and Sm is 0.003%-0.09%, and all the other are prepared burden for Ti;
When compound precast body was prepared, control mixture precast body accounted for 55% of metal die cavity volume;
The preparation of duraluminum: each composition percentage composition Ti by weight is 0.5%, and Th is 0.03%, and Si is 0.6%, and all the other are prepared burden for Al;
The preparation process is with embodiment one.
Embodiment four: (proportioning raw materials is the instance in ratio range of the present invention not)
During preparation vermiculite float stone red stone mixture, vermiculite and pumiceous weight ratio are 0.008: 1; The weight ratio of iron(ic)chloride, ferrous ammonium sulphate and vermiculite float stone mixture is 1: 1: 0.8, and the float stone particulate is of a size of 0.4mm, and vermiculite granule is of a size of 0.04mm,
The preparation of titanium fiber: to contain Cu be 0.001% to percentage by weight, and Sm is 0.12%, and all the other are prepared burden for Ti;
When compound precast body was prepared, control mixture precast body accounted for 55% of metal die cavity volume;
The preparation of aluminum alloy melt: each composition percentage composition Ti by weight is 0.2%, and Th is 0.009, and Si is 0.4%, and all the other are prepared burden for Al;
The preparation process is with embodiment one.
Embodiment five: (proportioning raw materials is the instance in ratio range of the present invention not)
During preparation vermiculite float stone red stone mixture, vermiculite and pumiceous weight ratio are 0.02: 1, and the weight ratio of iron(ic)chloride, ferrous ammonium sulphate and vermiculite float stone mixture is 1: 1: 2.1, and the float stone particulate is of a size of 1.2mm, and vermiculite granule is of a size of 0.4mm;
The preparation of titanium fiber: to contain Cu be 0.1% to percentage by weight, and Sm is 0.12%, and all the other are prepared burden for Ti;
When compound precast body was prepared, control mixture precast body accounted for 45% of metal die cavity volume;
The preparation of aluminum alloy melt: each composition weight percentage is 0.9% by Ti, and Th is 0.06%, and Si is 1.2%, and all the other are prepared burden for Al;
The preparation process is with embodiment one.
Following table is the alloy property synopsis of different components and proportioning:
Table 1
Al-alloy based vermiculite float stone ferric oxide composite material among the present invention, 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.
When Al-alloy based vermiculite float stone ferric oxide composite material prepared, vermiculite float stone quantity was too small, and iron(ic)chloride, ferrous ammonium sulphate 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.
When Al-alloy based vermiculite float stone ferric oxide composite material prepares; 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 vermiculite float stone ferric oxide composite material.
Ti in the alloy matrix aluminum, Th, Si 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 vermiculite float stone ferric oxide composite material, this matrix material is a matrix with the duraluminum, on matrix, distributing vermiculite float stone red stone mixture and titanium fiber, the particle of vermiculite float stone red stone mixture is 0.5-1mm; The two volume percent that accounts for matrix material of vermiculite float stone red stone mixture and titanium fiber is 45-55%;
Wherein the following chemical components in percentage by weight of alloy matrix aluminum: Ti is 0.3%～0.8%, and Th is 0.01%～0.05%, and Si is 0.5%-1%, and all the other are Al; Its red stone is Fe
3O
4
It is 0.003%-0.09% that the weight percent of this each composition of titanium fiber contains Cu, and Sm is 0.003%-0.09%, and all the other are Ti,
The preparation method of this matrix material may further comprise the steps:
A. the preparation of vermiculite float stone red stone mixture: pack iron(ic)chloride and ferrous ammonium sulphate in the hydro-thermal container of being with teflon lined into earlier; Be dissolved in water; Pack into vermiculite and float stone, the float stone particulate is of a size of 0.5-1mm, and vermiculite granule is of a size of 0.05-0.3mm; Vermiculite and pumiceous weight ratio are (0.01-0.1): 1; Stir above material and reach 2-7min, the weight ratio of iron(ic)chloride, ferrous ammonium sulphate and vermiculite float stone mixture is 1: 1: (1-2), naturally cooling just obtains vermiculite float stone red stone mixture after will stirring baking oven that thing places 220 ℃ after stir finishing and being incubated 3h;
B. the preparation of titanium fiber: to contain Cu be 0.003%-0.09% to percentage by weight, and Sm is 0.003%-0.09%, and all the other are prepared burden for Ti, and raw material places fusing in the riser pipe that has heating unit and forms iron alloy liquid, 1760-1790 ℃ of temperature of fusion position; Alloy liquid contacts with the water-cooled copper alloy runner flange of rotation through riser pipe, and water-cooled copper alloy runner runner flange is extracted alloy liquid, forms the alloy material fiber, and the LV of runner flange is 19-21m/s, and the diameter of titanium fiber is 10-45 μ m; Runner is opened the runner water-cooling system before opening and changeing, and the water-cooling system inflow temperature is less than 30 ℃;
C. be that the cavity of the steel die of 7: 1 titanium fiber and the vermiculite float stone red stone mixture logical vacuum system in bottom of putting into heating unit forms the mixture precast body with length-to-diameter ratio then; Titanium fiber and vermiculite float stone red stone mixture weight ratio are 2%, and control mixture precast body accounts for the 45-55% of metal die cavity volume; The opening mold heating unit, 470-520 ℃ of control Heating temperature;
D. the preparation of aluminum alloy melt: with weight percentage is that Ti is 0.3%～0.8%, and Th is 0.01%～0.05%, and Si is 0.5%-1%, 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 aluminum alloy melt 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 and forms Al-alloy based vermiculite float stone ferric oxide composite material.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020024848A (en) * | 2000-09-27 | 2002-04-03 | 황해웅 | Cu-Ni-Mn-Sn-Al, Si-Ce, La, Nd, Pr alloys for high strength wire or plate and its manufacturing method |
| CN1930314A (en) * | 2004-03-12 | 2007-03-14 | 住友金属工业株式会社 | Copper alloy and process for producing the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020024848A (en) * | 2000-09-27 | 2002-04-03 | 황해웅 | Cu-Ni-Mn-Sn-Al, Si-Ce, La, Nd, Pr alloys for high strength wire or plate and its manufacturing method |
| CN1930314A (en) * | 2004-03-12 | 2007-03-14 | 住友金属工业株式会社 | Copper alloy and process for producing the same |
Non-Patent Citations (1)
| Title |
|---|
| 蔚晓嘉.锰铜减震合金的研究.《科学之友》.2007,1-2. * |
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