CN106552934A - A kind of dysprosium cobalt alloy of addition chromium inhales ripple micropowder material - Google Patents
A kind of dysprosium cobalt alloy of addition chromium inhales ripple micropowder material Download PDFInfo
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- CN106552934A CN106552934A CN201510632449.4A CN201510632449A CN106552934A CN 106552934 A CN106552934 A CN 106552934A CN 201510632449 A CN201510632449 A CN 201510632449A CN 106552934 A CN106552934 A CN 106552934A
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Abstract
The present invention relates to a kind of dysprosium cobalt alloy of addition chromium inhales ripple micropowder material.The preparation method of the suction ripple micropowder material is：With metal Dy, Co, Cr as raw material, by DyCo14The atomic ratio dispensing mixing of Cr, 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 crushing, then powder pulverized powder is carried out into ball-milling treatment, finally take out and dry, you can ripple micropowder material must be inhaled.
Description
Technical field
The present invention relates to a kind of dysprosium cobalt-base alloys inhales ripple micropowder material, more particularly to a kind of dysprosium cobalt-base alloys of addition chromium inhales ripple micro mist and preparation method thereof.
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 absorptivity 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, security 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 micro mist etc..Sheet soft magnetic metal micro mist is more and more due to the atomicity 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 micro mist mainly has Fe, Co, Ni and its alloy powder etc. at present.
Co bases soft magnetic materials has higher saturation magnetization, magnetic conductivity, 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.The present invention reaches the suction ripple combination property for improving Dy-Co based alloys by mixing Cr.
The content of the invention
The present invention provides a kind of dysprosium cobalt alloy of addition chromium and inhales ripple micropowder material, and the preparation method of the suction ripple micropowder material comprises the steps：
(1) with metal Dy, Co, Cr（Purity is more than 99.5%）For raw material, by DyCo14The atomic ratio dispensing mixing of Cr；
(2) by mixed material vacuum arc furnace melting into alloy pig；
(3) alloy pig is put in quartz glass tube carries out vacuum sealing；
(4) the alloy pig for being sealed in glass tube 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 crushing；
(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 ripple micro mist must be inhaled.
Preferentially, step (4) in, at 300-400 DEG C, the time is 7-10 days to Homogenization Treatments temperature control.
Preferentially, step (7) in, planetary ball mill speeds control 200-300r/min operation, Ball-milling Time be 60-80 hours.
Preferentially, step (7) in, liquid used is alcohol or acetone.
Specific embodiment
Embodiment one：
With metal Dy, Co, Cr（Purity is more than 99.5%）For raw material, by DyCo14The mixture of atomic ratio dispensing 10g of Cr，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 tube，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 300 DEG C，Glass tube 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 crushing，Collect powder pulverized powder，Then powder is poured in ball grinder，Pouring alcohol 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 suction ripple micro mist can be obtained.
Embodiment two：
With metal Dy, Co, Cr（Purity is more than 99.5%）For raw material, by DyCo14The mixture of atomic ratio dispensing 10g of Cr，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 tube，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 tube 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 crushing，Collect powder pulverized powder，Then powder is poured in ball grinder，Pouring alcohol 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 suction ripple micro mist can be obtained.
Embodiment three：
With metal Dy, Co, Cr（Purity is more than 99.5%）For raw material, by DyCo14The mixture of atomic ratio dispensing 10g of Cr，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 tube，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 tube 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 crushing，Collect powder pulverized powder，Then powder is poured in ball grinder，Pouring alcohol 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 suction ripple micro mist can be obtained.
Claims (4)
1. a kind of dysprosium cobalt alloy of addition chromium inhales ripple micropowder material, it is characterised in that the preparation method of the suction ripple micropowder material comprises the steps：
(1) with metal Dy, Co, Cr（Purity is more than 99.5%）For raw material, by DyCo14The atomic ratio dispensing mixing of Cr；
(2) by mixed material vacuum arc furnace melting into alloy pig；
(3) alloy pig is put in quartz glass tube carries out vacuum sealing；
(4) the alloy pig for being sealed in glass tube 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 crushing；
(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 ripple micro mist must be inhaled.
2. a kind of dysprosium cobalt alloy of addition chromium according to claim 1 inhales ripple micropowder material, it is characterised in that step (4) in, at 300-400 DEG C, the time is 7-10 days for homogenization temperature control.
3. it is according to claim 1 it is a kind of addition chromium dysprosium cobalt alloy inhale ripple micropowder material, it is characterised in that step (7) in, planetary ball mill speeds control 200-300r/min operation, Ball-milling Time be 60-80 hours.
4. a kind of dysprosium cobalt alloy of addition chromium according to claim 1 inhales ripple micropowder material, it is characterised in that step (7) in, liquid used is alcohol or acetone.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108149076A (en) * | 2017-12-21 | 2018-06-12 | 桂林电子科技大学 | A kind of LaNiCo electromagnetic wave absorbing materials and preparation method thereof |
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| CN104858438A (en) * | 2015-05-11 | 2015-08-26 | 黄鹏腾 | Preparation method of neodymium-iron alloy wave-absorbing micro powder doped with titanium |
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- 2015-09-29 CN CN201510632449.4A patent/CN106552934A/en active Pending
Patent Citations (5)
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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 |
| CN104858438A (en) * | 2015-05-11 | 2015-08-26 | 黄鹏腾 | Preparation method of neodymium-iron alloy wave-absorbing micro powder doped with titanium |
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| CN108149076A (en) * | 2017-12-21 | 2018-06-12 | 桂林电子科技大学 | A kind of LaNiCo electromagnetic wave absorbing materials and preparation method thereof |
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