CN106552933A - A kind of dysprosium cobalt-base alloyss of doping Al inhale ripple micropowder and its preparation technology - Google Patents
A kind of dysprosium cobalt-base alloyss of doping Al inhale ripple micropowder and its preparation technology Download PDFInfo
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- CN106552933A CN106552933A CN201510631369.7A CN201510631369A CN106552933A CN 106552933 A CN106552933 A CN 106552933A CN 201510631369 A CN201510631369 A CN 201510631369A CN 106552933 A CN106552933 A CN 106552933A
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Abstract
The invention discloses a kind of dysprosium cobalt-base alloyss of doping Al inhale ripple micropowder and its preparation technology.The alloy powder that the suction ripple micropowder is prepared with metal Dy, Co, Al as raw material, its preparation method is：With metal Dy, Co, Al as raw material, by DyCo14The atomic ratio dispensing mixing of Al, mixture is smelted into into alloy pig with vacuum arc furnace ignition, then alloy pig is passed sequentially through after vacuum Homogenization Treatments, ice quenching-in water, mechanical activation comminution, then powder pulverized powder is carried out into ball-milling treatment, finally take out and dry, you can obtain a kind of alloy and inhale ripple micropowder.
Description
Technical field
The present invention relates to a kind of dysprosium cobalt-base alloyss inhale ripple micropowder material, the dysprosium cobalt-base alloyss of more particularly to a kind of doping Al inhale ripple micropowder and its preparation technology.
Background technology
Absorbing material is to absorb the electromagnetic wave energy for projecting its surface, and is changed into a class functional material of heat energy by the loss of material.On engineer applied in addition to requiring there is high absorbance to electromagnetic wave in broad frequency band, also require that material has the performance such as lightweight, heatproof, moisture-proof, anticorrosive.To adapt to the needs of modern war, stealth material will be widely used in weapon, and the research dynamics that huge fund increases absorbing material is thrown in countries in the world.Now, the application of absorbing material is stealthy and anti-stealth far beyond military affairs, resist and oppose anti-scope, it is more widely used in the electromagnetic interference of human-body safety protection, microwave dark room abatement apparatus, communication and navigation system, safety information to maintain secrecy, improve overall performance, improve signal to noise ratio, electromagnetic compatibility, and many aspects such as waveguide or coaxial absorber element.
Traditional absorbing material mainly has ferrite wave-absorbing material and ferromagnetic metal alloy micropowder etc..Lamellar soft magnetic metal micropowder is more and more due to the atomic number in surface, the special construction of high concentration crystal boundary and crystal boundary atom causes material under the radiation of electromagnetic field, atom, electron motion aggravation, promote magnetization, electromagnetic energy is made to be heat energy, so as to increased the absorption to electromagnetic wave, there are larger saturation magnetization and grain shape effect, there is good application prospect as radio-radar absorber.Magnetically soft alloy micropowder mainly has Fe, Co, Ni and its alloy powder etc. at present.
Co bases soft magnetic materials has higher saturation magnetization, pcrmeability, relatively low coercivity and small loss and other features, therefore is widely used in military and civilian suction ripple field.Rare earth element has the performances such as the special light that many other elements do not have, electricity, magnetic because of the particularity of its structure, is described as " treasure-house " of new material, the Dy-Co alloy absorbing materials for having lot of documents report to prepare with Dy, Co as raw material.But it is narrower that the absorbing material inhales wave frequency band, and by mixing the different types of absorbing medium of people, can produce the accumulative effect of part, and its absorption band also substantially increases, and is very favorable to effective Absorber Bandwidth of broadening material.Al elements are added in alloy, can greatly enhance the ductility of alloy, are conducive to alloy flattening in mechanical milling process, the present invention to reach the suction ripple combination property for improving Dy-Co based alloys by mixing Al.
The content of the invention
The present invention provides a kind of dysprosium cobalt-base alloyss of doping Al and inhales ripple micropowder and its preparation technology, and the preparation technology comprises the steps：
(1) with metal Dy, Co, Al（Purity is more than 99.5%）Simple substance is raw material, by DyCo14The atomic ratio dispensing mixing of Al；
(2) the raw material of mixing is carried out into melting with vacuum arc furnace ignition so as to be smelted into the uniform alloy pig of composition；
(3) alloy pig is put in quartz glass tube carries out vacuum sealing；
(4) the glass tubing equipped with alloy pig is put in high temperature furnace, carries out Homogenization Treatments；
(5) quenched after Homogenization Treatments；
(6) alloy pig is taken out after quenching carries out mechanical activation comminution；
(7) powder pulverized powder is collected, powder is poured in ball grinder, under the protection in liquid is full of ball grinder, ball-milling treatment is carried out with planetary ball mill；
(8) alloy powder is taken out after ball milling terminates and dried, you can obtained a kind of alloy and inhale ripple micropowder.
Preferentially, step (4) in, at 400-500 DEG C, the time is 7-10 days to Homogenization Treatments temperature control.
Preferentially, step (7) in, planetary ball mill speed controlling 200-300r/min operation, Ball-milling Time be 60-80 hours.
Preferentially, step (7) in, liquid used is ethanol or acetone.
Specific embodiment
Embodiment one：
With metal Dy, Co, Al（Purity is more than 99.5%）Simple substance is raw material, by DyCo14The mixture of atomic ratio dispensing 10g of Al，The raw material of mixing is carried out into melting with vacuum arc furnace ignition，Alloy melting 2-3 time，After being smelted into the uniform alloy pig of composition，Taking-up is put in quartz glass tube，To be evacuated in glass tubing，And by ferrule，Put in water after sealing，See whether that bubble is emerged，Show that sealing is good without bubble，Again quartz glass tube is put in chamber type electric resistance furnace，Homogenizing annealing process is carried out under the conditions of 400 DEG C，Glass tubing is put into mixture of ice and water after 10 days and is quenched by annealing，Taking-up alloy pig to be cooled，Alloy pig is carried out into mechanical activation comminution，Collect powder pulverized powder，Then powder is poured in ball grinder，Pouring ethanol again into fills up ball grinder，Cover cover，Being put on planetary ball mill carries out ball milling，Ball milling speed is controlled to 200r/min，After ball milling 80 hours，Alloy powder is taken out and is dried，A kind of alloy can be obtained and inhale ripple micropowder.
Embodiment two：
With metal Dy, Co, Al（Purity is more than 99.5%）Simple substance is raw material, by DyCo14The mixture of atomic ratio dispensing 10g of Al，The raw material of mixing is carried out into melting with vacuum arc furnace ignition，Alloy melting 2-3 time，After being smelted into the uniform alloy pig of composition，Taking-up is put in quartz glass tube，To be evacuated in glass tubing，And by ferrule，Put in water after sealing，See whether that bubble is emerged，Show that sealing is good without bubble，Again quartz glass tube is put in chamber type electric resistance furnace，Homogenizing annealing process is carried out under the conditions of 500 DEG C，Glass tubing is put into mixture of ice and water after 7 days and is quenched by annealing，Taking-up alloy pig to be cooled，Alloy pig is carried out into mechanical activation comminution，Collect powder pulverized powder，Then powder is poured in ball grinder，Pouring ethanol again into fills up ball grinder，Cover cover，Being put on planetary ball mill carries out ball milling，Ball milling speed is controlled to 300r/min，After ball milling 60 hours，Alloy powder is taken out and is dried，A kind of alloy can be obtained and inhale ripple micropowder.
Embodiment three：
With metal Dy, Co, Al（Purity is more than 99.5%）Simple substance is raw material, by DyCo14The mixture of atomic ratio dispensing 10g of Al，The raw material of mixing is carried out into melting with vacuum arc furnace ignition，Alloy melting 2-3 time，After being smelted into the uniform alloy pig of composition，Taking-up is put in quartz glass tube，To be evacuated in glass tubing，And by ferrule，Put in water after sealing，See whether that bubble is emerged，Show that sealing is good without bubble，Again quartz glass tube is put in chamber type electric resistance furnace，Homogenizing annealing process is carried out under the conditions of 450 DEG C，Glass tubing is put into mixture of ice and water after 8 days and is quenched by annealing，Taking-up alloy pig to be cooled，Alloy pig is carried out into mechanical activation comminution，Collect powder pulverized powder，Then powder is poured in ball grinder，Pouring ethanol again into fills up ball grinder，Cover cover，Being put on planetary ball mill carries out ball milling，Ball milling speed is controlled to 250r/min，After ball milling 70 hours，Alloy powder is taken out and is dried，A kind of alloy can be obtained and inhale ripple micropowder.
Claims (4)
1. a kind of dysprosium cobalt-base alloyss of doping Al inhale ripple micropowder, it is characterised in that the preparation method of the alloy powder comprises the steps：
(1) with metal Dy, Co, Al（Purity is more than 99.5%）Simple substance is raw material, by DyCo14The atomic ratio dispensing mixing of Al；
(2) the raw material of mixing is carried out into melting with vacuum arc furnace ignition so as to be smelted into the uniform alloy pig of composition；
(3) alloy pig is put in quartz glass tube carries out vacuum sealing；
(4) the glass tubing equipped with alloy pig is put in high temperature furnace, carries out Homogenization Treatments；
(5) quenched after Homogenization Treatments；
(6) alloy pig is taken out after quenching carries out mechanical activation comminution；
(7) powder pulverized powder is collected, powder is poured in ball grinder, under the protection in liquid is full of ball grinder, ball-milling treatment is carried out with planetary ball mill；
(8) alloy powder is taken out after ball milling terminates and dried, you can obtained a kind of alloy and inhale ripple micropowder.
2. a kind of dysprosium cobalt-base alloyss of doping Al according to claim 1 inhale ripple micropowder, it is characterised in that step (4) in, at 400-500 DEG C, the time is 7-10 days for homogenization temperature control.
3. a kind of doping Al according to claim 1 dysprosium cobalt-base alloyss inhale ripple micropowder, it is characterised in that step (7) in, planetary ball mill speed controlling 200-300r/min operation, Ball-milling Time be 60-80 hours.
4. a kind of dysprosium cobalt-base alloyss of doping Al according to claim 1 inhale ripple micropowder, it is characterised in that step (7) in, liquid used is ethanol or acetone.
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Citations (4)
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| CN104174855A (en) * | 2014-08-13 | 2014-12-03 | 中国科学院物理研究所 | Method for preparing magnetic nanosheet |
| CN104451265A (en) * | 2014-12-09 | 2015-03-25 | 桂林电子科技大学 | Ni-based alloy magnetic microwave absorbing material and preparation method thereof |
| CN104831173A (en) * | 2015-05-07 | 2015-08-12 | 黄鹏腾 | Preparation method of chromium-doped ferrous alloy wave-absorbing material |
| CN104831161A (en) * | 2015-05-07 | 2015-08-12 | 黄鹏腾 | Iron-based alloy wave absorbing material and preparation method thereof |
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- 2015-09-29 CN CN201510631369.7A patent/CN106552933A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104174855A (en) * | 2014-08-13 | 2014-12-03 | 中国科学院物理研究所 | Method for preparing magnetic nanosheet |
| CN104451265A (en) * | 2014-12-09 | 2015-03-25 | 桂林电子科技大学 | Ni-based alloy magnetic microwave absorbing material and preparation method thereof |
| CN104831173A (en) * | 2015-05-07 | 2015-08-12 | 黄鹏腾 | Preparation method of chromium-doped ferrous alloy wave-absorbing material |
| CN104831161A (en) * | 2015-05-07 | 2015-08-12 | 黄鹏腾 | Iron-based alloy wave absorbing material and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 潘顺康等: "Dy和Al对 Fe-Co合金微波吸收性能的影响", 《稀有金属材料与工程》 * |
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Application publication date: 20170405 |