CN101200367A - Method for preparing yttrium iron garnet ferrite material - Google Patents
Method for preparing yttrium iron garnet ferrite material Download PDFInfo
- Publication number
- CN101200367A CN101200367A CNA2007100503439A CN200710050343A CN101200367A CN 101200367 A CN101200367 A CN 101200367A CN A2007100503439 A CNA2007100503439 A CN A2007100503439A CN 200710050343 A CN200710050343 A CN 200710050343A CN 101200367 A CN101200367 A CN 101200367A
- Authority
- CN
- China
- Prior art keywords
- ferrite material
- iron garnet
- yttrium iron
- sintering
- garnet ferrite
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Soft Magnetic Materials (AREA)
Abstract
The invention relates to yttrium iron garnet ferrite preparation method, belonging to a field of electronic material. The invention comprises the following steps: 1 the proportion of the required materials Fe2O3 and Y2O3 is calculated according to the chemical formula Y3Fe5O12; 2. According to the proportion calculated in the step 1, the Fe2O3 and Y2O3 are mixed and milled; 3. Drying and crushing; 4, the dried and crushed powder is sintered by microwave; 5. Granulation; 6. Pressing formation. The invention has the advantages of: 1. Density structure; 2. excellent magnetic energy; 3 large dielectric constant and small dielectric loss; 4. Small electromagnetic loss.
Description
Technical field
The present invention relates to field of electronic materials, particularly the technology of preparing of microwave ferrite material.
Background technology
Microwave heating is a kind of type of heating of whole heatable substance, has characteristics such as efficient, energy-conservation, pollution-free, more and more is subjected to everybody attention now.Though the microwave sintering technology also has much immature, incomplete place, but, it has the incomparable advantage of routine techniques: at first, as a kind ofly save time, energy-conservation, save work, free of contamination technology, microwave sintering can satisfy current save energy, protection environment requirement; Secondly, the characteristics of the activated sintering that it had help obtaining good microstructure, thereby improve material property; Once more, microwave and material coupled characteristics have determined can carry out the selectivity heating with microwave, thereby can make the structured material with particular tissues, as function-graded material.These advantages make microwave sintering have broad prospects at high-performance ceramics and ceramic-metal composite preparation field.
In the prior art, the resistance furnace sintering method that the preparation of yttrium iron garnet gyromagnetic ferrite material is at present main still conventional, i.e. solid state reaction sintering method, its technology mainly contains: batching-ball milling-oven dry-pre-burning-ball milling-oven dry-granulation-moulding-sintering, this method is consuming time, power consumption.
Summary of the invention
Technical problem to be solved by this invention is, a kind of new method for preparing yttrium iron garnet ferrite material is provided, and prepared yttrium iron garnet gyromagnetic ferrite material can provide the yttrium iron garnet gyromagnetic ferrite material than prior art for preparing to have the better properties parameter.
The technical scheme that the present invention solve the technical problem employing is that method for preparing yttrium iron garnet ferrite material may further comprise the steps:
1) according to the chemical formula Y of yttrium iron garnet
3Fe
5O
12Calculate needed raw material Fe
2O
3And Y
2O
3Ratio;
2) ratio of calculating according to step 1) is with Fe
2O
3And Y
2O
3Mix ball milling;
3) oven dry is pulverized;
4) powder after oven dry, the pulverizing is carried out microwave sintering,
5) granulation;
6) compression moulding.
Described step 2) in, adopts the steel ball ball milling, and take a certain amount of iron deficiency prescription.
In the described step 5), the Ferrite Material behind ball milling oven dry is sieved, add 10% tackiness agent again and carry out granulation, compacting then.
Described raw material is that purity is 99.99% analytical pure Fe
2O
3With purity be 99.99% analytical pure Y
2O
3
In the described step 1), in weight unit, Y
2O
3Be 45.8996 units; Adopt the prescription of iron deficiency 3%, Fe
2O
3Be 51.1004 units.
Compare with ordinary method agglomerating yttrium iron garnet ferrite material, the present invention has the following advantages:
(1) compact structure: most of grain-size of the powder of normal sintering is about 3.0-5.0 μ m, and the powder grain size of microwave sintering is between 0.5-1.5 μ m.The result can find that also the powder crystal grain after crystal grain through the powder of microwave sintering is than normal sintering is much smaller in other raw materials of microwave sintering.So, preferentially improve the densification process of material in the microwave sintering process, but do not impel grain growing.
(2) magnetic property excellence: the saturation magnetization Mc of the sample behind microwave sintering is 14.49emu/g, and the value of coercivity H is 31.94Oe.
(3) specific inductivity is big, dielectric loss is little: this is because the treatment technology of microwave sintering has improved the microtexture of material and can obtain better close grain micro-, microwave sintering sample gas boring ratio is less, caused the minimizing of the low-k phase that causes by pore, density has also increased simultaneously, the dielectric coefficient that has caused the microwave sintering sample is greater than the normal sintering sample, and its dielectric loss is less than the normal sintering sample.
(4) the magnetoelectricity loss is little.
The present invention is further illustrated below in conjunction with the drawings and specific embodiments.
Description of drawings
Fig. 1 is a process flow sheet of the present invention.
Fig. 2 is the microwave agglomerating furnace schematic internal view.Wherein, infrared measurement of temperature hole 1, quartz crucible 2 with a lid waits to burn material 3, carborundum powder 4, corundum crucible 5, microwave oven exocoel 6, refractory brick 7.
Fig. 3 is the microwave sintering curve.
Fig. 4 is the XRD figure of microwave sintering powder.
Fig. 5 be the microwave sintering powder the SEM photo (900 ℃, 20min).
Fig. 6 is the B-H hysteresis curve (example weight 1 gram) of normal sintering and microwave sintering material, and wherein, " A " is the normal sintering sample, and " B " is the microwave sintering sample.
Fig. 7 is the dielectric loss curve of normal sintering and microwave sintering sample, and wherein, " A " is the normal sintering sample, and " B " is the microwave sintering sample.
Fig. 8 is the magnetoelectricity damage curve of normal sintering and microwave sintering sample, and wherein, " A " is the normal sintering sample, and " B " is the microwave sintering sample.
Embodiment
The yttrium iron garnet iron gyromagnetic ferrite material of the microwave sintering that the present invention proposes, its processing unit as shown in Figure 2, adopt the NL75 microwave agglomerating furnace to carry out the material crystallization, device comprises infrared measurement of temperature hole 1, and quartz crucible 2 with a lid waits to burn material 3, carborundum powder 4, corundum crucible 5, microwave oven exocoel 6, refractory brick 7.
A kind of microwave sintering yttrium iron garnet microwave ferrite material provided by the invention is mainly made by five steps once:
Step 1: batching
Use purity is 99.99% analytical pure Fe
2O
3With purity be 99.99% analytical pure Y
2O
3As raw material, according to the chemical formula (Y of pure yttrium iron garnet
3Fe
5O
12) calculate needed material rate.
For example: about the about 100g of required yttrium iron garnet ferrite material, historical facts or anecdotes is tested with 100g and is calculated material rate, and the result is: Y
2O
3Need 45.8996g; Use the steel ball ball milling when considering ball milling, adopt the prescription of iron deficiency 3%, Fe
2O
3Need 51.1004g, compensate with the iron of sneaking into to ball milling.
Step 2: ball milling
In the experiment, the ball milling time be 10h (hour), and adopt deionized water as disperse means.
Step 3: oven dry, granulation
Ball milling Ferrite Material oven dry is later sieved, add 10% tackiness agent again and carry out granulation. scalping 40 orders, dusting cover 100 orders.
Step 4: microwave sintering
Be easy to cause produce thermograde with microwave field density is inhomogeneous owing to heat-up rate is very fast in the microwave sintering process, thereby cause sintered products crackle to occur in sample interior.So sintering again after can not be device in the experiment molded, device can split at last like that, does not have use value.Adopt a powder for preparing to carry out earlier being pressed again after the microwave sintering processing in the experiment.In the microwave sintering process, the material that crushes is packed in the quartz crucible with a lid, imbed in the carborundum powder, open microwave oven then and transfer to the 400W preheating, improve power after 3 minutes to 500W, temperature rise rate is slack-off gradually in this process, after 10 minutes, again hoisting power to 600W to sintering temperature point, turn the about 20W of power down, make it in temperature spot annex insulation, then power is transferred to 0, take out after being cooled to room temperature.
Step 5: granulation, compacting
After granulation was finished, device was suppressed in weighing, pressed a part of sheet and ring-type device respectively.Pressure uses 50MPa.
By Fig. 3-8 as can be known, microwave sintering has the following advantages compared to normal sintering: 1) compact structure 2) the magnetic property excellence; 3) specific inductivity is big, and dielectric loss is little; 4) the magnetoelectricity loss is little; 5) save time, energy-conservation.
Claims (7)
1. method for preparing yttrium iron garnet ferrite material is characterized in that, may further comprise the steps:
1) according to the chemical formula Y of yttrium iron garnet
3Fe
5O
12Calculate needed raw material Fe
2O
3And Y
2O
3Ratio;
2) ratio of calculating according to step 1) is with Fe
2O
3And Y
2O
3Mix ball milling;
3) oven dry is pulverized;
4) powder after oven dry, the pulverizing is carried out microwave sintering;
5) granulation;
6) compression moulding.
2. method for preparing yttrium iron garnet ferrite material as claimed in claim 1 is characterized in that, described step 2) in, adopt the steel ball ball milling, and take a certain amount of iron deficiency prescription.
3. the described method for preparing yttrium iron garnet ferrite material of claim 1 is characterized in that, in the described step 4), adopts the method for microwave heating to carry out sintering;
4. method for preparing yttrium iron garnet ferrite material as claimed in claim 1 is characterized in that, in the described step 5), the Ferrite Material behind the sintering is added 10% tackiness agent and carries out granulation, compacting then.
5. method for preparing yttrium iron garnet ferrite material as claimed in claim 1 is characterized in that, described step 2) in, adopt deionized water as disperse means in the mechanical milling process.
6. method for preparing yttrium iron garnet ferrite material as claimed in claim 1 is characterized in that, described raw material is that purity is 99.99% analytical pure Fe
2O
3With purity be 99.99% analytical pure Y
2O
3
7. method for preparing yttrium iron garnet ferrite material as claimed in claim 1 is characterized in that, in the described step 1), and in weight unit, Y
2O
3Be 45.8996 units; Adopt the prescription of iron deficiency 3%, Fe
2O
3Be 51.1004 units.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100503439A CN101200367A (en) | 2007-10-29 | 2007-10-29 | Method for preparing yttrium iron garnet ferrite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100503439A CN101200367A (en) | 2007-10-29 | 2007-10-29 | Method for preparing yttrium iron garnet ferrite material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101200367A true CN101200367A (en) | 2008-06-18 |
Family
ID=39515767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100503439A Pending CN101200367A (en) | 2007-10-29 | 2007-10-29 | Method for preparing yttrium iron garnet ferrite material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101200367A (en) |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101942695A (en) * | 2010-10-20 | 2011-01-12 | 福州大学 | Method for growing pure and doped yttrium iron garnet crystals by guided mold pulling method |
| CN102267810A (en) * | 2011-08-09 | 2011-12-07 | 中国科学院宁波材料技术与工程研究所 | Preparation method of high-density ferrite-carbon nanotube composite block material |
| CN102503393A (en) * | 2011-10-25 | 2012-06-20 | 安徽理工大学 | Method for preparing high-performance ferrite material with microwave sintering method |
| CN102850045A (en) * | 2012-09-24 | 2013-01-02 | 陕西科技大学 | Ferrite composite material with giant dielectric constant and high magnetic intensity and preparation method of ferrite composite material |
| CN102976729A (en) * | 2012-11-14 | 2013-03-20 | 东阳富仕特磁业有限公司 | Garnet microwave ferrite with narrow line width and high dielectric constant |
| CN102976726A (en) * | 2012-08-07 | 2013-03-20 | 横店集团东磁股份有限公司 | Method for preparing ultrathin type ferrite sheet by using microwave sintering |
| CN104848690A (en) * | 2015-05-11 | 2015-08-19 | 深圳振华富电子有限公司 | Sintering mould |
| CN105669181A (en) * | 2016-01-13 | 2016-06-15 | 杭州电子科技大学 | Preparation method of compact small-grain YIG ceramic |
| CN105777097A (en) * | 2016-03-13 | 2016-07-20 | 浙江展邦电子科技有限公司 | Preparation method for improving purity and saturation magnetization of YIG target |
| CN107021748A (en) * | 2017-04-17 | 2017-08-08 | 东南大学 | A kind of Low Temperature Solid-Phase preparation method of yttrium iron garnet |
| CN108530058A (en) * | 2018-05-17 | 2018-09-14 | 合肥工业大学 | A kind of preparation method with negative permittivity barium titanate/yttrium iron garnet composite ceramics |
| CN111960815A (en) * | 2020-08-24 | 2020-11-20 | 上海阖煦微波技术有限公司 | Microwave gyromagnetic ferrite material and preparation process and application thereof |
| CN112846182A (en) * | 2021-01-13 | 2021-05-28 | 内蒙古科技大学 | Method for microwave in-situ synthesis of iron-based metal ceramic and iron-based metal ceramic |
| CN112851348A (en) * | 2021-01-11 | 2021-05-28 | 西南科技大学 | Preparation method of neodymium-doped yttrium iron garnet-based ceramic solidified body |
| CN114907107A (en) * | 2021-09-24 | 2022-08-16 | 浙江凯文磁钢有限公司 | Method for manufacturing yttrium aluminum garnet ferrite material |
| CN115385680A (en) * | 2022-09-14 | 2022-11-25 | 电子科技大学 | High-dielectric-width and low-linewidth microwave gyromagnetic ferrite material and preparation method thereof |
-
2007
- 2007-10-29 CN CNA2007100503439A patent/CN101200367A/en active Pending
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101942695A (en) * | 2010-10-20 | 2011-01-12 | 福州大学 | Method for growing pure and doped yttrium iron garnet crystals by guided mold pulling method |
| CN102267810A (en) * | 2011-08-09 | 2011-12-07 | 中国科学院宁波材料技术与工程研究所 | Preparation method of high-density ferrite-carbon nanotube composite block material |
| CN102503393A (en) * | 2011-10-25 | 2012-06-20 | 安徽理工大学 | Method for preparing high-performance ferrite material with microwave sintering method |
| CN102503393B (en) * | 2011-10-25 | 2013-07-10 | 安徽理工大学 | Method for preparing high-performance ferrite material with microwave sintering method |
| CN102976726A (en) * | 2012-08-07 | 2013-03-20 | 横店集团东磁股份有限公司 | Method for preparing ultrathin type ferrite sheet by using microwave sintering |
| CN102850045A (en) * | 2012-09-24 | 2013-01-02 | 陕西科技大学 | Ferrite composite material with giant dielectric constant and high magnetic intensity and preparation method of ferrite composite material |
| CN102976729A (en) * | 2012-11-14 | 2013-03-20 | 东阳富仕特磁业有限公司 | Garnet microwave ferrite with narrow line width and high dielectric constant |
| CN104848690A (en) * | 2015-05-11 | 2015-08-19 | 深圳振华富电子有限公司 | Sintering mould |
| CN105669181A (en) * | 2016-01-13 | 2016-06-15 | 杭州电子科技大学 | Preparation method of compact small-grain YIG ceramic |
| CN105669181B (en) * | 2016-01-13 | 2018-02-16 | 杭州电子科技大学 | A kind of preparation method of fine and close small-grain Y IG ceramics |
| CN105777097A (en) * | 2016-03-13 | 2016-07-20 | 浙江展邦电子科技有限公司 | Preparation method for improving purity and saturation magnetization of YIG target |
| CN107021748A (en) * | 2017-04-17 | 2017-08-08 | 东南大学 | A kind of Low Temperature Solid-Phase preparation method of yttrium iron garnet |
| CN108530058A (en) * | 2018-05-17 | 2018-09-14 | 合肥工业大学 | A kind of preparation method with negative permittivity barium titanate/yttrium iron garnet composite ceramics |
| CN111960815A (en) * | 2020-08-24 | 2020-11-20 | 上海阖煦微波技术有限公司 | Microwave gyromagnetic ferrite material and preparation process and application thereof |
| CN112851348A (en) * | 2021-01-11 | 2021-05-28 | 西南科技大学 | Preparation method of neodymium-doped yttrium iron garnet-based ceramic solidified body |
| CN112846182A (en) * | 2021-01-13 | 2021-05-28 | 内蒙古科技大学 | Method for microwave in-situ synthesis of iron-based metal ceramic and iron-based metal ceramic |
| CN114907107A (en) * | 2021-09-24 | 2022-08-16 | 浙江凯文磁钢有限公司 | Method for manufacturing yttrium aluminum garnet ferrite material |
| CN115385680A (en) * | 2022-09-14 | 2022-11-25 | 电子科技大学 | High-dielectric-width and low-linewidth microwave gyromagnetic ferrite material and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101200367A (en) | Method for preparing yttrium iron garnet ferrite material | |
| CN103058643B (en) | Mn-Zn soft magnetic ferrite material with high, temperature, high superposition and low power consumption, and preparation method of Mn-Zn soft magnetic ferrite material | |
| CN103951411A (en) | Wide-temperature-range low-power-consumption high-Curie-temperature manganese/zinc ferrite material and preparation method thereof | |
| CN110970170B (en) | Preparation method of FeTeSe polycrystalline superconductor | |
| CN102329128B (en) | Hard calcium ferrite and manufacturing method thereof | |
| CN105859301B (en) | A kind of silicon nitride ceramics and preparation method thereof | |
| CN105811000A (en) | Microwave assisted technical method for preparing lithium-lanthanum-zirconium-oxygen solid electrolyte | |
| CN105293499B (en) | A kind of preparation method of B, N codope nanometer silicon carbide absorbing material | |
| CN101913850A (en) | Preparation method of high-magnetic-conductivity low-temperature-sintering Z-shaped hexagonal ferrite material | |
| CN103113096A (en) | Manufacturing method of high-power yttrium/gadolinium garnet ferrite material | |
| CN105272269A (en) | Preparation method of Si3N4/h-BN nano-composite ceramics | |
| CN103113095A (en) | High-power yttrium/gadolinium garnet ferrite material | |
| CN103803959A (en) | Small-line-width high-Curie-temperature microwave ferrite material and preparation method thereof | |
| CN103725951B (en) | A kind of microwave sintering prepares the method for nano crystal soft magnetic material | |
| CN108503349A (en) | A kind of resistance to high current low-temperature sintering NiCuZn Ferrite Materials and preparation method thereof | |
| CN106747446A (en) | A kind of Microwave Hybrid Heating synthesizes Al4SiC4The new method of powder | |
| CN109524190A (en) | A kind of rare earth-iron-silicon substrate magnetic refrigeration composite material and preparation method thereof | |
| CN102786304B (en) | Preparation method for hot-pressed boron carbide ceramic | |
| CN104131208A (en) | Aluminium oxide-titanium carbide micron composite ceramic cutter material and microwave sintering method thereof | |
| CN106747447A (en) | One kind synthesis Al4SiC4The new method of powder body material | |
| CN102127396B (en) | Magnetic refrigeration material compound prepared under high pressure and preparation method thereof | |
| CN104162661B (en) | Microwave sintering method of Al2O3-TiC-TiN micron composite ceramic cutter material | |
| CN104016663A (en) | Microwave sintering method of lead oxide ceramic core block | |
| CN105565793A (en) | Method for molten salt assisted sintering of strontium ferrite | |
| CN103833347A (en) | Microwave ferrite material with small line width and high curie temperature and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20080618 |