CN109022999A - Ceramic-metal composite - Google Patents
Ceramic-metal composite Download PDFInfo
- Publication number
- CN109022999A CN109022999A CN201810934004.5A CN201810934004A CN109022999A CN 109022999 A CN109022999 A CN 109022999A CN 201810934004 A CN201810934004 A CN 201810934004A CN 109022999 A CN109022999 A CN 109022999A
- Authority
- CN
- China
- Prior art keywords
- ceramic
- metal composite
- materials
- zno
- cdo
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/12—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on oxides
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/05—Mixtures of metal powder with non-metallic powder
- C22C1/051—Making hard metals based on borides, carbides, nitrides, oxides or silicides; Preparation of the powder mixture used as the starting material therefor
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/005—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides comprising a particular metallic binder
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Magnetic Ceramics (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
The invention discloses a kind of ceramic-metal composite, the ceramic-metal composite is made of materials A, material B, material C and material D;Wherein, the material composition of materials A includes: C, Nd, Cd, Cr, Si, Ce and Fe;The material composition of material B includes: Nd, Ce, Au, Fe, Cd, Si, Pb and Sn;The material composition of material C includes: CdO, PbO2、ZnO2、CaO、Ce2O3、Al2O3And SiO2;The material composition of material D includes: CdO, PbO2、Ce2O3、MgO、ZnO2And Fe2O3.Solve the problems, such as that the service performance of traditional ceramic-metal composite is relatively low.
Description
Technical field
The present invention relates to electronic technology fields, and in particular, to a kind of ceramic-metal composite.
Background technique
Ceramic-metal composite be widely used in electronic transformer, filter, the magnetic core of inductor, power adapter,
The fields such as computer, audio-visual equipment and mobile communication;The Chinese patent of Patent No. CN201510839869X discloses a kind of high
The preparation method of saturation flux density magnetic ferrite magnetic core material, the magnetic ferrite magnetic core material is by Fe2O3、MgO、
Ni2O3、ZnO、MnO、Cr2O3、Nb2O5、InSb、Gd2O3、Tb4O7、SiO2、Bi2O3、Co2O3、SnO2、CaCO3、BaCO3、SrMoO4
Equal raw materials composition;Material of the present invention passes through Primary batching system, a ball milling, once sintered, second batch, secondary ball milling, is pressed into
Type, double sintering and etc. be made, but service performance is also relatively low.
Summary of the invention
The object of the present invention is to provide a kind of ceramic-metal composites, solve traditional ceramic-metal composite
The relatively low problem of service performance.
To achieve the goals above, the present invention provides a kind of ceramic-metal composite, the cermet composite woods
Material is made of materials A, material B, material C and material D;
Wherein, the material composition of materials A includes: C, Nd, Cd, Cr, Si, Ce and Fe;
The material composition of material B includes: Nd, Ce, Au, Fe, Cd, Si, Pb and Sn;
The material composition of material C includes: CdO, PbO2、ZnO2、CaO、Ce2O3、Al2O3And SiO2;
The material composition of material D includes: CdO, PbO2、Ce2O3、MgO、ZnO2And Fe2O3。
Through the above technical solutions, the present invention provides a kind of ceramic-metal composites, wherein materials A is alloy material
Material itself has soft magnetism, the gap of also fillable ferrite base-material D, close material matrix.Wherein Cr plays Toughened Materials
Effect, Nd, Cd refine the crystal grain of magnetically soft alloy itself.The soft magnetism of Nd, Ce, Si reinforced alloys is the magnetism of ferrite matrix
Enhancing plays relay supplementary function.Material C is low melting point inorganic material, and the two mixed sintering forms low melting point composite layer, makes materials A
There is liquid-phase sintering effect.Material D is ferrite base-material, MgO, ZnO2、Fe2O3For ferrite bulk composition.CdO promotes crystal raw
It is long, reduce stomata;Rare earth oxide Ce2O3Promote crystal grain homoepitaxial in the material, inhibits abnormal grain growth.Material B is low
Melting metallic alloy material can effectively wrap up ferrite crystal grains, can effectively facilitate grain growth and inhibit the annexation of crystal grain, so that crystal grain
Homoepitaxial, stomata are reduced, and the porosity in crystal boundary and crystal grain reduces, and improve ferritic microstructure, domain wall displacement and magnetic
Farmland rotary resistance reduces, therefore magnetic hystersis loss reduces;Low-melting alloy can play the work of toughening ferrite base-material grain boundary simultaneously
With.Nd, Ce therein can be refined and reinforced alloys, improves the toughness and intensity at ferrite crystal grains interface.Gold provided by the invention
Belong to ceramic composite, there is good magnetic property, while with good stability and practicability, can be widely applied to electronics
Devices field etc..
Other features and advantages of the present invention will the following detailed description will be given in the detailed implementation section.
Detailed description of the invention
The drawings are intended to provide a further understanding of the invention, and constitutes part of specification, with following tool
Body embodiment is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the organization chart of ceramic-metal composite provided by the invention.
Specific embodiment
Detailed description of the preferred embodiments below.It should be understood that described herein specific
Embodiment is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
The endpoint of disclosed range and any value are not limited to the accurate range or value herein, these ranges or
Value should be understood as comprising the value close to these ranges or value.For numberical range, between the endpoint value of each range, respectively
It can be combined with each other between the endpoint value of a range and individual point value, and individually between point value and obtain one or more
New numberical range, these numberical ranges should be considered as specific open herein.
The present invention provides a kind of ceramic-metal composite, the ceramic-metal composite is by materials A, material B, material
Expect C and material D composition;
Wherein, the material composition of materials A includes: C, Nd, Cd, Cr, Si, Ce and Fe;
The material composition of material B includes: Nd, Ce, Au, Fe, Cd, Si, Pb and Sn;
The material composition of material C includes: CdO, PbO2、ZnO2、CaO、Ce2O3、Al2O3And SiO2;
The material composition of material D includes: CdO, PbO2、Ce2O3、MgO、ZnO2And Fe2O3。
In a preferred embodiment of the invention, in order to further increase the usability of ceramic-metal composite
Can, materials A includes following raw material ingredient: C 2.3-2.8%, Nd 3-8%, Cd 0.01-0.05%, Cr 21-
25%, Si 5-8%, Ce 0.2-0.5% and surplus Fe.
In a preferred embodiment of the invention, in order to further increase the usability of ceramic-metal composite
Can, material B includes following raw material ingredient: Nd 3-8%, Ce 0.2-0.5%, Au 1-1.3%, Fe 1-5%, Cd
0.01-0.05%, Si 0.02-0.07%, Pb 9-11% and surplus Sn.
In a preferred embodiment of the invention, in order to further increase the usability of ceramic-metal composite
Can, material C includes following raw material ingredient: CdO 0.1-0.4%, PbO20.1-0.4%, ZnO20.3-0.9%, CaO
8-12%, Ce2O31-4%, Al2O30.1-0.4% and surplus SiO2。
In a preferred embodiment of the invention, in order to further increase the usability of ceramic-metal composite
Can, material D includes following raw material ingredient: CdO 0.1-0.4%, PbO23-9%, Ce2O30.1-0.4%, MgO 3-
9%, ZnO23-9% and surplus Fe2O3。
In a preferred embodiment of the invention, in order to further increase the usability of ceramic-metal composite
Can, materials A, material B, material C and material D weight ratio be 1:0.1-0.5:0.1-0.3:30.
The present invention will be described in detail by way of examples below.In following embodiment, ceramic-metal composite
It is specific the preparation method is as follows:
The preparation of materials A: weight percentage will be shone are as follows: C, Nd, Cd, Cr, Si, Ce and Fe carry out mix, the conjunction
C, Nd, Cd, Cr, Si, Ce, Fe used in golden material are pure material (constituent content is greater than 99.9%), and raw material is first put into induction furnace
In in, heat up melting, keep the temperature 22 minutes after reaching 1615 DEG C of smelting temperature, so by alloy liquid inject positioned at atomizer it
On tundish in, aluminium alloy is flowed out by tundish bottom leakage eye, and meeting when passing through nozzle with high-speed flow, to be atomized be tiny
Drop, atomized drop are rapidly solidificated into alloy powder in closed atomizing cup, and alloy powder average particle size is 7 μm, atomization
Gas pressure is 5MPa, and liquid metal fluid flow is 2.5kg/min, and it is 1580 DEG C that alloy liquid, which injects temperature, and atomizing angle is
27 degree.
The preparation of material B: by Nd, Ce, Au, Fe, Cd, Si, Pb and Sn carry out mix, Nd, Ce, Au, Fe, Cd, Si,
Pb, Sn are pure material (constituent content be greater than 99.9%), first raw material is put into induction furnace in, heat up melting, when reaching melting
20 minutes are kept the temperature after 720 DEG C of temperature;Then alloy liquid injection is located in the tundish on atomizer, aluminium alloy is in
Between packet bottom leakage eye outflow, meet and be atomized as fine drop with high-speed flow when passing through nozzle, atomized drop is in closed mist
Change in cylinder and be rapidly solidificated into alloy powder, alloy powder average particle size is 12 μm, atomization pressure 4MPa, liquid metal
Fluid flow is 2kg/min, and it is 715 DEG C that alloy liquid, which injects temperature, and atomizing angle is 32 degree.
The preparation of material C: by CdO, PbO2、ZnO2、CaO、Ce2O3、Al2O3And SiO2Mix is carried out, raw material is pure
Substance (content is greater than 99.9%), carries out mixing and breaking up for each raw material in sand mill, then dries powder at 115 DEG C
Dry, re-sieving after drying, sieve is 200 mesh, forms mixture;
Then the mixture of A material and C-material is placed in one, is uniformly mixed, is then placed in sintering furnace and is sintered, burnt
Junction temperature is 1225 DEG C, finally makes sintered product in grinder diameter of particle reach 13 microns, forming material A and material C
Sintering feed, the weight ratio of materials A and material C is 1:0.1-0.3;
The preparation method of material D: by CdO, PbO2、Ce2O3、MgO、ZnO2And Fe2O3Carry out mix, each material purity
It is all larger than 99.9%;Each raw material is subjected to mixing and breaking up in sand mill, is then dried powder at 115 DEG C, after drying
Re-sieving, sieve are 200 mesh, are then placed in sintering furnace and are sintered, and sintering temperature is 1175 DEG C, are finally grinding sintered product
Diameter of particle is set to reach 12 microns in grinding machine;
After materials A and C mixed sintering material, material B and material D ingredient, it is added in three-dimensional mixer and is uniformly mixed, obtain
Mixed powder;Then mixed powder is orientated in Magnetic field press, using etc. static pressure mode form, by molded blank argon gas protect
Sintering furnace is put under shield to be sintered, is first warming up to 625 DEG C, is kept the temperature 3.5h, is then heated to 1065 DEG C of sintering 3.5h, be cooled to
After room temperature, double tempering processing is carried out, i.e., respectively in 810 DEG C and 555 DEG C of tempering heat treatment 1.5h.Most afterwards through 230 DEG C of timeliness at
Reason obtains product.
Embodiment 1
According to above-mentioned preparation method carry out, wherein materials A includes following raw material ingredient: C 2.3%, Nd 3%,
Cd 0.01%, Cr 21%, Si 5%, Ce 0.2% and surplus Fe;Material B includes following raw material ingredient: Nd 3%,
Ce 0.2%, Au 1%, Fe 1%, Cd 0.01%, Si 0.02%, Pb 9% and surplus Sn;Material C includes following parts by weight
Material composition: CdO 0.1%, PbO20.1%, ZnO20.3%, CaO 8%, Ce2O31%, Al2O30.1% and surplus
SiO2;Material D includes following raw material ingredient: CdO 0.1%, PbO23%, Ce2O30.1%, MgO 3%, ZnO2
3% and surplus Fe2O3;Materials A, material B, material C and material D weight ratio be 1:0.1:0.1:30.
Embodiment 2
According to above-mentioned preparation method carry out, wherein materials A includes following raw material ingredient: C 2.5%, Nd 6%,
Cd 0.03%, Cr 23%, Si 6%, Ce 0.3% and surplus Fe;Material B includes following raw material ingredient: Nd 5%,
Ce 0.4%, Au 1.1%, Fe 3%, Cd 0.03%, Si 0.05%, Pb 10% and surplus Sn;Material C includes following heavy
Measure part material composition: CdO 0.25%, PbO20.25%, ZnO20.6%, CaO 10%, Ce2O33%, Al2O30.3% He
Surplus SiO2;Material D includes following raw material ingredient: CdO 0.3%, PbO26%, Ce2O30.25%, MgO 6%,
ZnO26% and surplus Fe2O3;Materials A, material B, material C and material D weight ratio be 1:0.3:0.2:30.
Embodiment 3
According to above-mentioned preparation method carry out, wherein materials A includes following raw material ingredient: C 2.8%, Nd 8%,
Cd 0.05%, Cr 25%, Si 8%, Ce 0.5% and surplus Fe;Material B includes following raw material ingredient: Nd 8%,
Ce 0.5%, Au 1.3%, Fe 5%, Cd 0.05%, Si 0.07%, Pb 11% and surplus Sn;Material C includes following heavy
Measure part material composition: CdO 0.4%, PbO20.4%, ZnO20.9%, CaO 12%, Ce2O34%, Al2O30.4% and remaining
Measure SiO2;Material D includes following raw material ingredient: CdO 0.4%, PbO29%, Ce2O30.4%, MgO 9%, ZnO2
9% and surplus Fe2O3;Materials A, material B, material C and material D weight ratio be 1:0.5:0.3:30.
Embodiment 4
It is carried out according to above-mentioned preparation method, wherein materials A includes following raw material ingredient: C 2%, Nd 2%, Cd
0.005%, Cr 20%, Si 4%, Ce 0.2-0.5% and surplus Fe;Material B includes following raw material ingredient: Nd 3-
8%, Ce 0.1%, Au 0.8%, Fe 0.8%, Cd 0.005%, Si 0.01%, Pb 8% and surplus Sn;Material C includes
Following raw material ingredient: CdO 0.05%, PbO20.08%, ZnO20.2%, CaO 7%, Ce2O30.6%, Al2O3
0.08% and surplus SiO2;Material D includes following raw material ingredient: CdO 0.07%, PbO22%, Ce2O30.07%,
MgO 2%, ZnO22% and surplus Fe2O3;Materials A, material B, material C and material D weight ratio be 1:0.055:0.05:30.
Embodiment 5
It is carried out according to above-mentioned preparation method, wherein materials A includes following raw material ingredient: C 3%, Nd 9%, Cd
0.06%, Cr 26%, Si 9%, Ce 0.7% and surplus Fe;Material B includes following raw material ingredient: Nd 9%, Ce
0.6%, Au 1.5%, Fe 6%, Cd 0.07%, Si 0.09%, Pb 13% and surplus Sn;Material C includes following parts by weight
Material composition: CdO 0.5%, PbO20.6%, ZnO21%, CaO 13%, Ce2O36%, Al2O30.6% and surplus
SiO2;Material D includes following raw material ingredient: CdO 0.6%, PbO210%, Ce2O30.5%, MgO 11%, ZnO2
11% and surplus Fe2O3;Materials A, material B, material C and material D weight ratio be 1:0.6:0.4:30.
Comparative example 1
High saturation magnetic flux density magnetic ferrite magnetic core material disclosed in the Chinese patent of Patent No. CN201510839869X
The performance parameter of material.
Table 1
Fig. 1 is the organization chart of ceramic-metal composite provided by the invention, it can be seen that the cermet is compound
Materials microstructure structure even compact.
The preferred embodiment of the present invention has been described above in detail, still, during present invention is not limited to the embodiments described above
Detail within the scope of the technical concept of the present invention can be with various simple variants of the technical solution of the present invention are made, this
A little simple variants all belong to the scope of protection of the present invention.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case where shield, can be combined in any appropriate way, in order to avoid unnecessary repetition, the present invention to it is various can
No further explanation will be given for the combination of energy.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should also be regarded as the disclosure of the present invention.
Claims (6)
1. a kind of ceramic-metal composite, which is characterized in that the ceramic-metal composite is by materials A, material B, material C
It is formed with material D;
Wherein, the material composition of materials A includes: C, Nd, Cd, Cr, Si, Ce and Fe;
The material composition of material B includes: Nd, Ce, Au, Fe, Cd, Si, Pb and Sn;
The material composition of material C includes: CdO, PbO2、ZnO2、CaO、Ce2O3、Al2O3And SiO2;
The material composition of material D includes: CdO, PbO2、Ce2O3、MgO、ZnO2And Fe2O3。
2. ceramic-metal composite according to claim 1, wherein materials A includes following raw material ingredient: C
2.3-2.8%, Nd 3-8%, Cd 0.01-0.05%, Cr 21-25%, Si 5-8%, Ce 0.2-0.5% and surplus Fe.
3. ceramic-metal composite according to claim 1, wherein material B includes following raw material ingredient: Nd
3-8%, Ce 0.2-0.5%, Au 1-1.3%, Fe 1-5%, Cd 0.01-0.05%, Si 0.02-0.07%, Pb 9-
11% and surplus Sn.
4. ceramic-metal composite according to claim 1, wherein material C includes following raw material ingredient:
CdO 0.1-0.4%, PbO20.1-0.4%, ZnO20.3-0.9%, CaO 8-12%, Ce2O31-4%, Al2O3 0.1-
0.4% and surplus SiO2。
5. ceramic-metal composite according to claim 1, wherein material D includes following raw material ingredient:
CdO 0.1-0.4%, PbO23-9%, Ce2O30.1-0.4%, MgO 3-9%, ZnO23-9% and surplus Fe2O3。
6. ceramic-metal composite according to claim 1, wherein materials A, material B, material C and material D weight
Than for 1:0.1-0.5:0.1-0.3:30.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201810934004.5A CN109022999A (en) | 2018-08-16 | 2018-08-16 | Ceramic-metal composite |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201810934004.5A CN109022999A (en) | 2018-08-16 | 2018-08-16 | Ceramic-metal composite |
Publications (1)
Publication Number | Publication Date |
---|---|
CN109022999A true CN109022999A (en) | 2018-12-18 |
Family
ID=64630592
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201810934004.5A Pending CN109022999A (en) | 2018-08-16 | 2018-08-16 | Ceramic-metal composite |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN109022999A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113136519A (en) * | 2021-04-26 | 2021-07-20 | 中建材科创新技术研究院(山东)有限公司 | Wear-resistant and corrosion-resistant iron-based composite material and preparation method and application thereof |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102651264A (en) * | 2011-02-25 | 2012-08-29 | 北京有色金属研究总院 | Sintered composite soft magnetic material and method for preparing same |
CN104392819A (en) * | 2014-05-20 | 2015-03-04 | 深圳顺络电子股份有限公司 | Composite soft magnetic material and preparation method thereof |
CN108101527A (en) * | 2017-12-07 | 2018-06-01 | 天长市昭田磁电科技有限公司 | A kind of high frequency fine grain soft magnetic ferrite and preparation method thereof |
CN108335819A (en) * | 2018-03-29 | 2018-07-27 | 南京信息工程大学 | A kind of sintering magnetic composite and preparation method thereof |
-
2018
- 2018-08-16 CN CN201810934004.5A patent/CN109022999A/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102651264A (en) * | 2011-02-25 | 2012-08-29 | 北京有色金属研究总院 | Sintered composite soft magnetic material and method for preparing same |
CN104392819A (en) * | 2014-05-20 | 2015-03-04 | 深圳顺络电子股份有限公司 | Composite soft magnetic material and preparation method thereof |
CN108101527A (en) * | 2017-12-07 | 2018-06-01 | 天长市昭田磁电科技有限公司 | A kind of high frequency fine grain soft magnetic ferrite and preparation method thereof |
CN108335819A (en) * | 2018-03-29 | 2018-07-27 | 南京信息工程大学 | A kind of sintering magnetic composite and preparation method thereof |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113136519A (en) * | 2021-04-26 | 2021-07-20 | 中建材科创新技术研究院(山东)有限公司 | Wear-resistant and corrosion-resistant iron-based composite material and preparation method and application thereof |
CN113136519B (en) * | 2021-04-26 | 2022-02-18 | 中建材科创新技术研究院(山东)有限公司 | Wear-resistant and corrosion-resistant iron-based composite material and preparation method and application thereof |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN107311637B (en) | A kind of method that low-power consumption manganese-zinc ferrite is prepared based on nucleocapsid crystal grain | |
CN108962528A (en) | A kind of magnetic material and preparation method thereof with high-temperature stability | |
CN108335819A (en) | A kind of sintering magnetic composite and preparation method thereof | |
CN108389676A (en) | A kind of temperature tolerance permanent-magnet material and preparation method thereof | |
CN102220538A (en) | Sintered neodymium-iron-boron preparation method capable of improving intrinsic coercivity and anticorrosive performance | |
CN107275027B (en) | Using the cerium-rich rare earth permanent magnet and preparation method thereof of yttrium | |
CN109585113A (en) | A kind of preparation method of Sintered NdFeB magnet | |
CN108530050A (en) | Wide-temperature and low-consumption high impedance MnZn soft magnetic ferrite and preparation method | |
CN109022989A (en) | A kind of preparation method of high-entropy alloy Binder Phase tungsten base high-specific-gravity alloy | |
CN110156449A (en) | A kind of high reliability Ferrite Material and preparation method thereof | |
CN107151137A (en) | A kind of Mn-Zn soft magnetic ferrite and preparation method thereof | |
CN107134360A (en) | A kind of crystal boundary modified method for preparing high-performance Y base rear earth permanent magnet | |
CN107507689B (en) | The preparation method of high magnetic permeability absorbing material | |
CN102528017B (en) | Rare earth additive for hard alloy and preparation method thereof | |
CN109087768A (en) | Nd-Fe-B permanent magnet material and preparation method thereof for magnetic suspension system | |
CN109022999A (en) | Ceramic-metal composite | |
CN104409189B (en) | Compound soft magnetic material and preparation method thereof | |
CN107799256A (en) | A kind of permanent-magnetic composite materials and preparation method | |
CN109161783A (en) | The preparation method of ceramic-metal composite | |
CN109102980A (en) | The preparation method of Ferrite Material | |
CN110835269A (en) | Production process of high-strength high-performance soft magnetic ferrite material | |
CN108389675A (en) | A kind of permanent-magnetic composite materials and preparation method thereof | |
CN108538532A (en) | A kind of composite magnetic and preparation method thereof | |
CN109133906A (en) | low thermal expansion composite material | |
CN107129292B (en) | One kind prepares the ferritic ionic association alternatives of high-performance MnZn |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181218 |
|
RJ01 | Rejection of invention patent application after publication |