CN101942587A - Magnesium alloy pumice ferric oxide cobalt composite material and preparation method thereof - Google Patents
Magnesium alloy pumice ferric oxide cobalt composite material and preparation method thereof Download PDFInfo
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- CN101942587A CN101942587A CN2010102203619A CN201010220361A CN101942587A CN 101942587 A CN101942587 A CN 101942587A CN 2010102203619 A CN2010102203619 A CN 2010102203619A CN 201010220361 A CN201010220361 A CN 201010220361A CN 101942587 A CN101942587 A CN 101942587A
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- ferric oxide
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Abstract
The invention provides a magnesium alloy pumice ferric oxide cobalt composite material and a preparation method thereof. The composite material has high absorbing properties and excellent damping performance. The method of the invention has simple process and low production cost, and is suitable for industrialized production. The composite material takes magnesium alloy as a matrix; pumice ferric oxide cobalt composite material and dolomite granule are distributed on the matrix; the volume percent of the pumice ferric oxide cobalt composite material and the dolomite granule accounts for 40-45% of the composite material; the size of the composite granule is 0.5-1mm; and the magnesium alloy base body comprises the following chemical composition by weight percent: 4-8% of Al, 0.01-0.05% of Th, 0.5-1% of Si, 0.001-0.005% of Bi and the balance of Mg.
Description
One, technical field
The invention belongs to metal material field, relate to a kind of magnesium alloy pumice and cobalt 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 material field, the suction ripple damping effect of material has been subjected to 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, make 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, make the aluminium base absorbing material of top layer assemble in situ magnetic Nano linear array.The shortcoming of this method is a requirement technical difficulty height.
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 easily comes off in the processing.
CN200910191481.8 number application relates to a kind of preparation method with short carbon fiber reinforced magnesium-base composite material of good damping characteristic, and it may further comprise the steps: (1) removes organic glue-line on short carbon fiber surface; (2) electroless deposition metallic nickel coating needing to obtain the coating of thickness by the control depositing time under alkaline condition; (3) preparing after the surface is coated with the short carbon fiber of metallic nickel coating, adopt powder metallurgic method can prepare short carbon fiber reinforced magnesium-base composite material with good damping characteristic.This invention joins the chemical nickel plating short carbon fiber of 3～20% percent by volumes in the magnesium matrix, though strengthened matrix and given its more good damping property, its damping capacity has than pure magnesium good damping property more, can reach 0.015 high damping scope, but technology is more complicated.The shortcoming of this material is that absorbing property is poor.
Three, summary of the invention
Purpose of the present invention is exactly at above-mentioned technological deficiency, and a kind of magnesium alloy pumice and cobalt ferric oxide composite material is provided, this matrix material absorbing property height, and have superior damping capacity.
Another object of the present invention provides the preparation method that the magnesium alloy pumice and cobalt ferric oxide is inhaled the ripple vibration damping composite material, and this preparation method's technology is simple, and production cost is low, is suitable for suitability for industrialized production.
The objective of the invention is to be achieved through the following technical solutions:
A kind of magnesium alloy base pumice and cobalt ferric oxide composite material, this matrix material is matrix with the magnesium alloy, on matrix, distributing pumice and cobalt ferric oxide mixture and dolomite particles, pumice and cobalt ferric oxide mixture and dolomite particles the two to account for matrix material volume per-cent be 40-45%; Composite particles is of a size of 0.5-1mm; The following chemical components in percentage by weight of this magnesium alloy substrate: Al is 4%～8%, and Th is 0.01%～0.05%, and Si is 0.5%-1%, and Bi is 0.001%～0.005%, and all the other are Mg; The pumice and cobalt ferric oxide mixture is that cobalt ferric oxide pierces in the pumiceous hole, and to form a layer thickness at the hole wall be 0.1-10 μ m film.
2, a kind of preparation method of magnesium alloy base pumice and cobalt ferric oxide composite material, it is characterized in that: it may further comprise the steps:
The preparation of a, pumice and cobalt ferric oxide mixture: iron(ic) chloride, cobalt chloride and ferrous ammonium sulphate are packed in the hydro-thermal container of being with teflon lined, (adding less water to dissolving gets final product) is dissolved in water, reinstall float stone, the float stone particle size is 0.5-1mm, stir above three kinds of materials and reach 2-7min, four kinds of material iron(ic) chloride, cobalt chloride, ferrous ammonium sulphate and pumiceous weight ratios are 1: (1-2): 1: (1-2), naturally cooling just obtains the pumice and cobalt ferric oxide mixture after will stirring baking oven that thing places 220 ℃ after stir finishing and being incubated 3h;
Then rhombspar and pumice and cobalt ferric oxide mixture are mixed, dolomite particles is of a size of 0.01-0.06mm, the weight ratio of pumice and cobalt ferric oxide mixture and rhombspar is 1: 0.05-0.09, the cavity of steel die of the mixture of rhombspar and pumice and cobalt ferric oxide mixture being put into the logical vacuum system in bottom of heating unit forms the mixture precast body, and control mixture precast body accounts for the 40-45% of metal die cavity volume; The opening mold heating unit is 520-540 ℃ in the control steel die;
The preparation of b, liquid magnesium alloy: with weight percentage is that Al is 4%～8%, and Th is 0.01%～0.05%, and Si is 0.5%-1%, and Bi is 0.001%～0.005%, and all the other are the raw material of Mg, are fused into alloy liquid under 1680-1720 ℃ of temperature;
C, unlatching vacuum system, the relative vacuum degree of controlling in the above-mentioned steel die is-30Kpa, with above-mentioned magnesium alloy liquid pour into mixture precast body in the steel die cavity above, and fill with mould, magnesium alloy liquid at the relative vacuum degree is-infiltrate the gap in rhombspar and the pumice and cobalt ferric oxide mixture precast body under the pressure effect of 30Kpa, the closing molding heating unit, alloy liquid solidifies at the mould internal cooling and forms magnesium alloy base pumice and cobalt ferric oxide composite material.
The present invention's beneficial effect compared to existing technology is as follows:
The float stone space is big among the present invention, is easy to admit ferrite, and ferrite is in the pumiceous space, forms the pumice and cobalt ferric oxide mixture that ferrite can not be scattered, thereby becomes matrix material and absorb electromagnetic solid material center; Iron and cobalt/cobalt oxide composite wave-absorbing, effect strengthens than single ferrite.
The pumice and cobalt ferric oxide mixture is that cobalt ferric oxide pierces in the pumiceous hole, and to form a layer thickness at the hole wall be 0.1-10 μ m film.Cobalt ferric oxide in the pumice and cobalt ferric oxide mixture is Fe
3O
4And CO
2O
3Mixture.
Ferrite is in the pumiceous space, not in the contact of magnesium alloy liquid, therefore can not cause the oxidation of magnesium alloy;
The chemical ingredients of rhombspar is CaMg[CO
3]
2, the effect of rhombspar is to separate the float stone particle when matrix material, is convenient to magnesium alloy liquid and infiltrates float stone particle gap, rhombspar has damping effect simultaneously.
Si in the magnesium alloy and Bi can promote magnesium alloy to combine with pumiceous interface.Th in the magnesium alloy can reduce the particle of magnesium alloy, improves the intensity of matrices of composite material.Solid pumice and cobalt ferric oxide mixture can improve the compressive property of composite material of magnesium alloy.These can both improve the mechanical property of magnesium alloy base pumice and cobalt ferric oxide composite material.
Alloy property of the present invention sees Table 1.
The float stone 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 magnesium alloy base pumice and cobalt ferric oxide composite material that Fig. 1 makes for the embodiment of the invention one.
Can see by Fig. 1 and on magnesium alloy substrate, to be distributed with the pumice and cobalt ferric oxide complex body.
Five, embodiment
Below each embodiment only as explanation of the present invention, weight percent wherein all can change weight g, kg or other weight unit into.
Embodiment one:
The preparation process of magnesium alloy base pumice and cobalt ferric oxide composite material of the present invention is as follows:
The preparation of a, pumice and cobalt ferric oxide mixture: iron(ic) chloride, cobalt chloride and ferrous ammonium sulphate are packed in the hydro-thermal container of being with teflon lined, be dissolved in water, reinstall float stone, the float stone particulate is of a size of about 0.5mm, stir above three kinds of materials and reach 2-7min, four kinds of material iron(ic) chloride, cobalt chloride, ferrous ammonium sulphate and pumiceous weight ratios are 1: 1: 1: 1, and naturally cooling just obtains the pumice and cobalt ferric oxide mixture after will stirring baking oven that thing places 220 ℃ after stir finishing and being incubated 3h;
Then rhombspar and pumice and cobalt ferric oxide mixture are mixed, dolomite particles is of a size of about 0.01mm, the weight ratio of pumice and cobalt ferric oxide mixture and rhombspar is 1: 0.05, the cavity of steel die of the mixture of rhombspar and pumice and cobalt ferric oxide mixture being put into the logical vacuum system in bottom of heating unit forms the mixture precast body, and control mixture precast body accounts for 45% of metal die cavity volume; Opening heating unit, is 520-540 ℃ in the control steel die;
The preparation of b, liquid magnesium alloy: with weight percentage Al is 4%, and Th is 0.01%, and Si is 0.5%, and Bi is 0.001% raw material, is fused into alloy liquid under 1680-1720 ℃ of temperature;
C, unlatching vacuum system, the relative vacuum degree of controlling in the above-mentioned steel die is-30Kpa, with above-mentioned magnesium alloy liquid pour into mixture precast body in the steel die cavity above, and fill with mould, magnesium alloy liquid infiltrates the gap in rhombspar and the pumice and cobalt ferric oxide mixture precast body under the vacuum pressure effect, the closing molding heating unit, alloy liquid solidifies at the mould internal cooling and forms magnesium alloy base pumice and cobalt ferric oxide composite material.
Embodiment two:
The preparation of a, pumice and cobalt ferric oxide mixture: when forming the pumice and cobalt ferric oxide mixture, iron(ic) chloride, cobalt chloride, ferrous ammonium sulphate and pumiceous weight ratio are 1: 2: 1: 2.The float stone particle size is about 1mm.
The mixture precast body: in the mixture of rhombspar and pumice and cobalt ferric oxide mixture, the weight ratio of pumice and cobalt ferric oxide mixture and rhombspar is 1: 0.09, and dolomite particles is of a size of 0.06mm; The volume percent that control pumice and cobalt ferric oxide mixture accounts for matrix material is 40%;
The preparation of b, liquid magnesium alloy: the following chemical components in percentage by weight of this magnesium alloy substrate: Al is 8%, and Th is 0.05%, and Si is 1%, and Bi is 0.005%;
Its preparation process is with embodiment one.
Embodiment three:
The preparation of a, pumice and cobalt ferric oxide mixture: when forming the pumice and cobalt ferric oxide mixture, iron(ic) chloride, cobalt chloride, ferrous ammonium sulphate and pumiceous weight ratio are 1: 1.2: 1: 1.2.The float stone particle size is about 0.6mm.
The mixture precast body: in the mixture of rhombspar and pumice and cobalt ferric oxide mixture, the weight ratio of pumice and cobalt ferric oxide mixture and rhombspar is 1: 0.07, and dolomite particles is of a size of 0.05mm; The volume percent that control pumice and cobalt ferric oxide mixture accounts for matrix material is 43%;
The preparation of b, liquid magnesium alloy: the following chemical components in percentage by weight of this magnesium alloy substrate: Al is 6%, and Th is 0.04%, and Si is 0.7%, and Bi is 0.003%;
Its preparation process is with embodiment one.
Embodiment four: (proportioning raw materials is the example in ratio range of the present invention not)
The preparation of a, pumice and cobalt ferric oxide mixture: when forming the pumice and cobalt ferric oxide mixture, iron(ic) chloride, cobalt chloride, ferrous ammonium sulphate and pumiceous weight ratio are 1: 0.8: 1: 0.7.The float stone particle size is 0.4mm.
The mixture precast body: in the mixture of rhombspar and pumice and cobalt ferric oxide mixture, the weight ratio of pumice and cobalt ferric oxide mixture and rhombspar is 1: 0.05-0.09, and dolomite particles is of a size of 0.005mm; The volume percent that control pumice and cobalt ferric oxide mixture accounts for matrix material is 40%;
The preparation of b, liquid magnesium alloy: the following chemical components in percentage by weight of this magnesium alloy substrate: Al is 3%, and Th is 0.008%, and Si is 0.3%, and Bi is 0.0007%;
Its preparation process is with embodiment one.
Embodiment five: (proportioning raw materials is the example in ratio range of the present invention not)
The preparation of a, pumice and cobalt ferric oxide mixture: when forming the pumice and cobalt ferric oxide mixture, iron(ic) chloride, cobalt chloride, ferrous ammonium sulphate and pumiceous weight ratio are 1: 2.5: 1: 2.1.The particle of pumice and cobalt ferric oxide mixture is 1.2mm.
The mixture precast body: in the mixture of rhombspar and pumice and cobalt ferric oxide mixture, the weight ratio of pumice and cobalt ferric oxide mixture and rhombspar is 1: 0.2, and dolomite particles is of a size of 0.8mm; The volume percent that control pumice and cobalt ferric oxide mixture accounts for matrix material is 45%;
The preparation of b, liquid magnesium alloy: the following chemical components in percentage by weight of this magnesium alloy substrate: Al is 9%, and Th is 0.07%, and Si is 1.3%, and Bi is 0.007%.
Its preparation process is with embodiment one.
Following table is the alloy property synopsis of different components and proportioning:
Table 1
Magnesium alloy alloy-based pumice and cobalt ferric oxide composite material, the particle size of 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 magnesium alloy base pumice and cobalt ferric oxide composite material prepared, float stone quantity was too small, and iron(ic) chloride, cobalt chloride, ferrous ammonium sulphate are difficult for all entering the float stone gap, and the total ferric oxide quantity of matrix material is few, inhales a little less than the intensity of wave; Float stone quantity is too much, be difficult for to form perfect matrix material, and the ferric oxide quantity of holding in the float stone gap is few, inhale intensity of wave also a little less than.
When magnesium alloy base pumice and cobalt ferric oxide composite material prepares, rhombspar quantity is very few or dolomite particles is too small, every not opening the float stone particle, be unfavorable for the infiltration of magnesium alloy liquid, rhombspar quantity is too much or dolomite particles is excessive, can influence the mechanical property of magnesium alloy base pumice and cobalt ferric oxide composite material.
Al in the magnesium alloy substrate, Th, Si, Bi 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 magnesium alloy is difficult to be combined with the float stone interface, and the mechanical property of titanium alloy self reduces, and also reduces the wave absorbtion and the vibration damping of matrix material greatly.
Claims (2)
1. magnesium alloy base pumice and cobalt ferric oxide composite material, this matrix material is matrix with the magnesium alloy, on matrix, distributing pumice and cobalt ferric oxide mixture and dolomite particles, pumice and cobalt ferric oxide mixture and dolomite particles the two to account for matrix material volume per-cent be 40-45%; Composite particles is of a size of 0.5-1mm; The following chemical components in percentage by weight of this magnesium alloy substrate: Al is 4%～8%, and Th is 0.01%～0.05%, and Si is 0.5%-1%, and Bi is 0.001%～0.005%, and all the other are Mg.
2. the preparation method of a magnesium alloy base pumice and cobalt ferric oxide composite material, it is characterized in that: it may further comprise the steps:
The preparation of a, pumice and cobalt ferric oxide mixture: iron(ic) chloride, cobalt chloride and ferrous ammonium sulphate are packed in the hydro-thermal container of being with teflon lined, be dissolved in water, reinstall float stone, the float stone particle size is 0.5-1mm, stir above three kinds of materials and reach 2-7min, four kinds of material iron(ic) chloride, cobalt chloride, ferrous ammonium sulphate and pumiceous weight ratios are 1: (1-2): 1: (1-2), naturally cooling just obtains the pumice and cobalt ferric oxide mixture after will stirring baking oven that thing places 220 ℃ after stir finishing and being incubated 3h;
Then rhombspar and pumice and cobalt ferric oxide mixture are mixed, dolomite particles is of a size of 0.01-0.06mm, the weight ratio of pumice and cobalt ferric oxide mixture and rhombspar is 1: 0.05-0.09, the cavity of steel die of the mixture of rhombspar and pumice and cobalt ferric oxide mixture being put into the logical vacuum system in bottom of heating unit forms the mixture precast body, and control mixture precast body accounts for the 40-45% of metal die cavity volume; The opening mold heating unit is 520-540 ℃ in the control steel die;
The preparation of b, liquid magnesium alloy: with weight percentage is that Al is 4%～8%, and Th is 0.01%～0.05%, and Si is 0.5%-1%, and Bi is 0.001%～0.005%, and all the other are the raw material of Mg, are fused into alloy liquid under 1680-1720 ℃ of temperature;
C, unlatching vacuum system, the relative vacuum degree of controlling in the above-mentioned steel die is-30Kpa, with above-mentioned magnesium alloy liquid pour into mixture precast body in the steel die cavity above, and fill with mould, magnesium alloy liquid at the relative vacuum degree is-infiltrate the gap in rhombspar and the pumice and cobalt ferric oxide mixture precast body under the pressure effect of 30Kpa, the closing molding heating unit, alloy liquid solidifies at the mould internal cooling and forms magnesium alloy base pumice and cobalt ferric oxide composite material.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102501454A (en) * | 2011-11-08 | 2012-06-20 | 北京工业大学 | High-performance magnesium alloy wave-absorbing composite plate and preparation method thereof |
| CN103451501A (en) * | 2013-08-27 | 2013-12-18 | 苏州长盛机电有限公司 | Magnesium alloy |
| CN104004948A (en) * | 2014-04-30 | 2014-08-27 | 燕山大学 | Super-light composite wave-absorbing plate material and preparation method thereof |
-
2010
- 2010-07-06 CN CN2010102203619A patent/CN101942587A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102501454A (en) * | 2011-11-08 | 2012-06-20 | 北京工业大学 | High-performance magnesium alloy wave-absorbing composite plate and preparation method thereof |
| CN102501454B (en) * | 2011-11-08 | 2014-09-10 | 北京工业大学 | High-performance magnesium alloy wave-absorbing composite plate and preparation method thereof |
| CN103451501A (en) * | 2013-08-27 | 2013-12-18 | 苏州长盛机电有限公司 | Magnesium alloy |
| CN104004948A (en) * | 2014-04-30 | 2014-08-27 | 燕山大学 | Super-light composite wave-absorbing plate material and preparation method thereof |
| CN104004948B (en) * | 2014-04-30 | 2016-04-06 | 燕山大学 | A kind of ultralight composite wave-absorbing sheet material and preparation method thereof |
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