CN108389675A - A kind of permanent-magnetic composite materials and preparation method thereof - Google Patents
A kind of permanent-magnetic composite materials and preparation method thereof Download PDFInfo
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
- H01F1/09—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials mixtures of metallic and non-metallic particles; metallic particles having oxide skin
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
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Abstract
The invention discloses a kind of permanent-magnetic composite materials and preparation method thereof, a kind of permanent-magnetic composite materials of the permanent-magnetic composite materials are made of alloy material A, alloy material B, alloy material C and inorganic composite materials D mixed sinterings；Alloy material A, alloy material B, alloy material C and inorganic composite materials D weight ratios are 1：（0.09‑0.15）：（0.010‑0.018）：（0.003‑0.007）.The permanent-magnetic composite materials preparation method simple process, prepares that raw materials used cost is relatively low, process is simple, and permanent-magnetic composite materials are with good performance, is convenient for industrialized production.Permanent-magnetic composite materials prepared by the present invention are suitable for electrical apparatus industry.
Description
Technical field
The present invention relates to functional composite material technical field, specifically a kind of permanent-magnetic composite materials and preparation method thereof.
Background technology
Chinese patent literature CN105304252A is related to a kind of no heavy rare earth high-performance Ne-Fe-B permanent magnet and its preparation side
Method, the permanent magnet are made of the raw material including following components：(A) main-phase alloy consists of the following compositions：Pr+Nd：29~
30wt%, B：0.9 ~ 1.0wt%, Al：0.05 ~ 0.5wt%, Cu：0.05 ~ 0.2wt%, Nb：0.2 ~ 0.5wt%, Zr：0.1 ~ 0.2wt%,
Co：0.1 ~ 2.0wt%, Ga：0.2 ~ 0.5wt%, Fe surplus；(B) auxiliary phase metal selects Nd hydride or PrNd alloy hydrides
Object.The permanent magnet is high remanent magnetism high energy product sintered Nd-Fe-B permanent magnet, has the Hcj of the magnet improved and does not drop substantially
Low Br, for the domestic highest trade mark magnet such as N54,52M, 45H without heavy rare earth.The present invention by reduce heavy rare earth consumption,
To effectively reduce the material cost of product.But the production method production cycle is long, coercivity is not high.
Invention content
The purpose of the present invention is the deficiencies in for the above-mentioned prior art, provide a kind of permanent-magnetic composite materials.
It is a further object of the present invention to provide the preparation methods of permanent-magnetic composite materials.
The purpose of the present invention is what is be achieved through the following technical solutions：
A kind of permanent-magnetic composite materials, the permanent-magnetic composite materials are by alloy material A, alloy material B, alloy material C and inorganic compounding
Material D mixed sinterings are made；Wherein：
The weight percentage of each ingredient is in alloy material A：B 3~6%, Nd25~28%, Bi 0.8~1.2%, Hf
Remaining Fe of 0.8~1.3%, Ce 0.1~0.5%, S 0.05~0.09%.
The weight percentage of each ingredient is in alloy material B：C 0.09~0.15%；Mn 0.25~0.55%, Si
0.30-0.4%；S 0.02-0.045%, P 0.02-0.045%, Nd 3-6%, Hf 0.8~1.1%, Ce 0.05~
0.09%, remaining Fe.
The weight percentage of each ingredient is in alloy material C：Te 12-16%, In 2-5%, Bi 2-5%, Nd
0.02~0.05%, Ce 0.01~0.05%, Hf 0.001~0.004%, remaining Pb.
The weight percentage of each ingredient is Al in inorganic composite materials D2O315-18%, CrO35-7%, ZnO 1-
3%, MnO 1-3%, Li2O 3-5%, Fe2O30.1-0.4%, NiSO40.1-0.3%, K2O 2-4%, B2O3 2-
3.5%, HfO20.001-0.003%, Nd2O3 0.001-0.003%, Ce2O30.001-0.003%, remaining SiO2。
In the further design scheme of the present invention, alloy material A, alloy material B, alloy material C and inorganic composite materials D
Weight ratio is 1：（0.09-0.15）：（0.010-0.018）：（0.003-0.007）.
A kind of preparation method of permanent-magnetic composite materials, includes the following steps：
Step 1 prepares alloy material A, alloy material B, alloy material C and inorganic composite materials D respectively.
Step 2, by alloy material A, alloy material B, alloy material C and inorganic composite materials D weight ratios be 1：（0.09-
0.15）：（0.010-0.018）：（0.003-0.007）Dispensing is carried out, is added in three-dimensional mixer and is uniformly mixed, obtain mixed powder
Material.
Mixed powder is orientated by step 3 in Magnetic field press, is molded using isostatic pressed mode, is obtained molded blank.
Molded blank is put into sintering furnace and is sintered by step 4 under protection of argon gas, is first warming up to 630-680 DEG C, heat preservation
3-4h then heats to 950-1110 DEG C of sintering 3-4h.
Step 5 after being cooled to room temperature, carries out double tempering processing, i.e., respectively at 690-730 DEG C and 550-590 DEG C of heat
Reason tempering 1-2h；Most permanent-magnetic composite materials product is obtained through 210-250 DEG C of ageing treatment afterwards.
In the further design scheme of the present invention, in step 1, the weight percentage of each ingredient is in alloy material A：B
3~6%, Nd 25~28%, Bi 0.8~1.2%, Hf 0.8~1.3%, Ce 0.1~0.5%, S 0.05~0.09%,
Remaining Fe.Alloy material A primarily forms magnetic main phase Nd2Fe14B and time main phase Ce 2Fe14B, enhances magnetic coupling interaction,
Make the existing high coercivity of magnet in turn avoid remanent magnetism to decline to a great extent, to obtain higher comprehensive magnetic energy.In sintering process
In, high-melting point alloy element Hf is added, can make that cenotype is precipitated in magnet tissue, eliminates and is in direct contact between main phase grain
The phenomenon that, effectively inhibit growing up for main phase grain, is conducive to obtain relatively fine uniform grain structure, while main phase can be improved
The thermal stability of magnet.
In step 1, the weight percentage of each ingredient is in alloy material B：C 0.09~0.15%；Mn 0.25~
0.55%, Si 0.30-0.4%；S 0.02-0.045%, P 0.02-0.045%, Nd 3-6%, Hf 0.8~1.1%, Ce
0.05~0.09%, remaining Fe.The reason of alloy material B improvement intrinsic coercivity is secondary mutually rich iron between the main phase grain of formation
Phase, it is suppressed that crystal grain intersection particle is grown up, and main phase grain has been refined, therefore may refrain from the increasing of their ambient stray fields
By force, and then intrinsic coercivity is improved.Nd, Hf, Ce and A material in B material is corresponding, it is therefore prevented that key element in A materials
Diffusion transfer in sintering.
In step 1, the weight percentage of each ingredient is in alloy material C：Te 12-16%, In 2-5%, Bi 2-
5%, Nd 0.02~0.05%, Ce 0.01~0.05%, Hf 0.001~0.004%, remaining Pb.Alloy material C fusing points are low,
Reduce rich-Nd phase and the angle of wetting of main phase, inhibit growing up for main phase, so that main phase interface defect density is reduced, magnetic reversal farmland is on boundary
Face forming core is difficult.In addition it can be distributed in around main phase grain to disperse, the institutional framework of Grain-Boundary Phase can be effectively improved, to magnetic
Body carries out crystal boundary modified, reinforcing Grain-Boundary Phase.Therefore the remanent magnetism of material is improved.Nd, Hf, Ce and A material in C-material is opposite
It answers, it is therefore prevented that diffusion transfer of the key element in sintering in A materials.
In step 1, the weight percentage of each ingredient is in inorganic composite materials D：Al2O315-18%, CrO3 5-
7%, ZnO 1-3%, MnO 1-3%, Li2O 3-5%, Fe2O30.1-0.4%, NiSO40.1-0.3%, K2O 2-4%,
B2O32-3.5%, HfO20.001-0.003%, Nd2O3 0.001-0.003%, Ce2O30.001-0.003%, remaining
SiO2.Inorganic composite materials D, that is, compound bulk melting point of metal oxide is low, can be evenly distributed in main phase crystal boundary and play pinning work
With coercivity is improved.
The present invention has advantageous effect following prominent：
Permanent-magnetic composite materials of the present invention have high coercivity performance.In addition it prepared alloy in kind and passes through proper treatment, ensured
Alloying component, the uniformity of tissue and performance, ensure that the quality of alloy.The alloy preparation technology is easy, prepares used former
Expect that cost is relatively low, process is simple, with short production cycle, and the alloy of production is with good performance, is convenient for industrialized production.The present invention
The permanent-magnet material of preparation is suitable for electrical apparatus industry.
Description of the drawings
Fig. 1 is permanent-magnetic composite materials organization chart in embodiment 1.
Specific implementation mode
The invention will be further described with reference to the accompanying drawings and embodiments.
Embodiment 1
A kind of permanent-magnetic composite materials, by alloy material A, alloy material B, alloy material C and inorganic composite materials D mixed sintering systems
At；Alloy material A, alloy material B, alloy material C and inorganic composite materials D weight ratios are 1：0.09：0.010：0.003,
In：
The weight percentage of each ingredient is in alloy material A：B 3%, Nd 25%, Bi 0.8%, Hf 0.%, Ce
Remaining Fe of 0.%, S 0.05%；
The weight percentage of each ingredient is in alloy material B：C 0.09%；Mn 0.25%, Si 0.30%, S
0.025%, P 0.02%, Nd 3%, Hf 0.8%, Ce 0.05%, remaining Fe；
The weight percentage of each ingredient is in alloy material C：Te 12%, In 2%, Bi 2%, Nd 0.02%, Ce
0.01%, Hf 0.001%, remaining Pb；
The weight percentage of each ingredient is in inorganic composite materials D：Al2O315%, CrO35%, ZnO 1%, MnO 1%,
Li2O 3%, Fe2O30.1%, NiSO40.1%, K2O 2%, B2O32%, HfO20.001%, Nd2O30.001%,
Ce2O30.001%, remaining SiO2。
A kind of preparation method of permanent-magnetic composite materials, includes the following steps：
Step 1 prepares alloy material A, alloy material B, alloy material C and inorganic composite materials D respectively；Wherein：
The preparation of alloy material A, according to weight percentage be B3%, Nd25%, Bi0.8%, Hf 0.%, Ce 0.%,
Remaining Fe of S0.05% carries out dispensing.Nd, Bi, Hf, Ce, Fe are pure material（Constituent content is more than 99.9%）.B is in ferro-boron
Between the form of alloy be added, the amount containing B of ferro-boron intermediate alloy is 24-26%.S is added in the form of sulphur iron intermediate alloy, in sulphur iron
Between alloy amount containing B be 40-50%.First by melting in raw material induction furnace, smelting temperature is 1530~1560 DEG C, obtains master alloy
Liquid；Melting master alloy liquid is poured under nitrogen protection on forming furnace turntable, forms slab；The rotation linear speed of turntable pour point
Degree is 14~18m/s.Slab thickness is 2~5 millimeters, and long width is 5~8 millimeters.It is then placed in a sealable reaction kettle,
Reaction kettle is passed through H2After S gases, 70 ~ 120 DEG C are heated, time 2-3h then takes out air-cooled.By treated, slab is put into very again
Reciprocal of duty cycle is 0.08~0.11Pa, and the hydrogen crushing furnace that air pressure is 0.7~1.8atm in stove carries out that hydrogen is broken, and temperature is heated to 280~305
DEG C, hydrogen obtains coarse powder in broken 45~55 minutes；Then it is fine powder coarse powder to be put into coarse powder mill in airflow milling, and it is equal that average particle size is made
It is 3~6 μm, 5~8atm of airflow milling powder pressure.
When prepared by alloy material B, first Q215B steel waste materials are put into sodium hydroxide lye and are handled 1-2 hours, hydroxide
Sodium solution concentration is 2-2.5%, 66-70 DEG C of alkali liquid temperature.It is dried after being rinsed 3 times with clear water again after base extraction is complete, Bian Kefang
Enter melting in induction furnace, be then placed in Nd, Hf, Ce, smelting temperature is 1590~1610 DEG C, obtains alloy liquid；Alloy liquid
Ingredient be C 0.09%；Mn 0.25%, Si 0.30%, S 0.025%, P 0.02%, Nd 3%, Hf 0.8%, Ce
0.05%, remaining Fe.Alloy liquid injection is located in the tundish on atomizer.Aluminium alloy leaks eye by tundish bottom
Outflow is met with high-speed flow when passing through nozzle and is atomized as fine drop, atomized drop fast rapid hardening in closed atomizing cup
Gu at alloy powder.Alloy powder average particle size is 10~14 μm.Atomization pressure is 4.5-6.0MPa.Flow of liquid metal
Body flow is 2-4kg/min.Alloy liquid implantation temperature is 1560~1590 DEG C.Atomizing angle is 33 degree.
When prepared by alloy material C, by Te 12%, In 2%, Bi 2%, Nd 0.02%, Ce 0.01%, Hf
0.001%, remaining Pb carry out dispensing, and Te, In, Bi, Nd0, Ce, Hf, Pb raw material are pure material.Raw material is put into resistance earthenware
Melting in crucible stove, smelting temperature are 630~710 DEG C, obtain metal liquid；Alloy liquid injection is located on atomizer
Tundish in.Aluminium alloy is met with high-speed flow when passing through nozzle and is atomized as tiny liquid by tundish bottom leakage eye outflow
Drop, atomized drop are rapidly solidificated into alloy powder in closed atomizing cup.Alloy powder average particle size is 3~8 μm.Atomization
Gas pressure is 4.5-6.0MPa.Liquid metal fluid flow is 1-3kg/min.Alloy liquid implantation temperature is 600~630
℃.Atomizing angle is 35 degree.
Inorganic composite materials D is Al according to weight percent2O315%, CrO35%, ZnO 1%, MnO 1%, Li2O
3%, Fe2O30.1%, NiSO40.1%, K2O 2%, B2O32%, HfO20.001%, Nd2O30.001%, Ce2O3
0.001%, remaining SiO2It carries out each material purity of dispensing and is all higher than 99.9%；Each raw material is mixed and broken in sand mill
It is broken, then powder is dried at 130-150 DEG C, re-sieving after drying, sieve be 200-220 mesh, be then placed in sintering furnace into
Row sintering.Sintering temperature is 1120-1270 DEG C, finally so that diameter of particle is reached 6-10 microns in grinder sintered product.
Step 2, by alloy material A, alloy material B, alloy material C and inorganic composite materials D weight ratios be 1：0.09 ：
0.010 ：0.003 carries out dispensing, is added in three-dimensional mixer and is uniformly mixed, obtains mixed powder.
Mixed powder is orientated by step 3 in Magnetic field press, is molded using isostatic pressed mode, is obtained molded blank.
Molded blank is put into sintering furnace and is sintered by step 4 under protection of argon gas, is first warming up to 600-750 DEG C, heat preservation
3-4h then heats to 990-1090 DEG C of sintering 3-4h.
Step 5 after being cooled to room temperature, carries out double tempering processing, i.e., respectively at 690-710 DEG C and 540-570 DEG C of heat
Reason tempering 1-2h；Most permanent-magnetic composite materials product is obtained through 210-250 DEG C of ageing treatment afterwards.
The organization chart of permanent-magnetic composite materials product is by attached drawing 1, it is seen that even tissue is fine and close.It analyzes after testing, permanent magnetism is compound
The maximum magnetic energy product of material is 54 (BH) max/MGOe, and coercivity is 20.5Hcj/ KOe；Remanent magnetism is 14.9Br/ KGs.It is excellent
The performance of material in Chinese patent literature CN101719405A.
Embodiment 2
In the present embodiment, in addition to the raw material proportioning of alloy material A, alloy material B, alloy material C and inorganic composite materials D are different
Outside, remaining and preparation method are same as Example 1.
In the present embodiment, the raw material proportioning of permanent-magnetic composite materials is：1：0.12：0.014：0.005.
The weight percentage of each ingredient is in alloy material A：B 5%, Nd 27%, Bi 0.9%, Hf 1%, Ce
Remaining Fe of 0.3%, S 0.07%；
The weight percentage of each ingredient is in alloy material B：C 0.11%；Mn 0.39%, Si 0.35%, S 0.035%,
P 0.035%, Nd 4%, Hf 0.9%, Ce 0.07%, remaining Fe；
The weight percentage of each ingredient is in alloy material C：Te 14%, In 4%, Bi 3%, Nd 0.03%, Ce
0.03%, Hf 0.004%, remaining Pb；
The weight percentage of each ingredient is in inorganic composite materials D：Al2O317%, CrO36%, ZnO2%, MnO 2%,
Li2O 4%, Fe2O30.3%, NiSO40.2%, K2O 3%, B2O33%, HfO20.002%, Nd2O30.002%, Ce2O30.002%, remaining SiO2。
It analyzes after testing, the maximum magnetic energy product of permanent-magnetic composite materials is 56 (BH) max/MGOe, coercivity 21.2Hcj/
KOe；Remanent magnetism is 15.3Br/ KGs.It is superior to the performance of material in Chinese patent literature CN107424703A.
Embodiment 3
In the present embodiment, in addition to the raw material proportioning of alloy material A, alloy material B, alloy material C and inorganic composite materials D are different
Outside, remaining and preparation method are same as Example 1.
In the present embodiment, the raw material proportioning of permanent-magnetic composite materials is：1：0.15：0.018：0.007.
The weight percentage of each ingredient is in alloy material A：B 6%, Nd 28%, Bi 1.2%, Hf 1.3%,
Remaining Fe of Ce 0.5%, S 0.09%；
The weight percentage of each ingredient is in alloy material B：C 0.15%；Mn 0.55%, Si -0.4%； S
0.045%, P 0.045%, Nd 6%, Hf 1.1%, Ce 0.09%, remaining Fe；
The weight percentage of each ingredient is in alloy material C：Te 16%, In 5%, Bi 5%, Nd 0.05%, Ce
0.05%, Hf 0.004%, remaining Pb；
The weight percentage of each ingredient is in inorganic composite materials D：Al2O318%, CrO37%, ZnO 3%, MnO
3%, Li2O 5%, Fe2O30.4%, NiSO40.3%, K2O 4%, B2O33.5%, HfO20.003%, Nd2O3
0.003%, Ce2O30.003%, remaining SiO2。
It analyzes after testing, the maximum magnetic energy product of permanent-magnetic composite materials is 55 (BH) max/MGOe, coercivity 21.1Hcj/
KOe；Remanent magnetism is 15.0Br/ KGs.It is superior to the performance of material in Chinese patent literature CN107424703A.
Embodiment 4
In the present embodiment, in addition to the raw material proportioning of alloy material A, alloy material B, alloy material C and inorganic composite materials D are different
Outside, remaining and preparation method are same as Example 1.
In the present embodiment, the raw material proportioning of permanent-magnetic composite materials is：1：0.07：0.008：0.002.
The weight percentage of each ingredient is in alloy material A：B 2%, Nd 22%, Bi 0.5%, Hf 0.7%, Ce
Remaining Fe of 0.05%, S 0.03%；
The weight percentage of each ingredient is in alloy material B：C 0.05%；Mn 0.21%, Si 0.2%, S 0.015%, P
0.01%, Nd 2%, Hf 0.5%, Ce 0.03%, remaining Fe；
The weight percentage of each ingredient is in alloy material C：Te 10%, In 1%, Bi 1%, Nd 0.01%, Ce
0.005%, Hf 0.0004%, remaining Pb；
The weight percentage of each ingredient is in inorganic composite materials D：Al2O312%, CrO34%, ZnO0.7%, MnO
0.8%, Li2O 2%, Fe2O30.04%, NiSO40.08%, K2O 1%, B2O31%, HfO20.0005%, Nd2O3
0.0006%, Ce2O30.0008%, remaining SiO2。
It analyzes after testing, the maximum magnetic energy product of permanent-magnetic composite materials is 52 (BH) max/MGOe, coercivity 19.3Hcj/
KOe；Remanent magnetism is 14.1Br/ KGs.It is found that the sexuality for the temperature tolerance permanent-magnet material that the embodiment obtains is less than embodiment 1-3
Temperature tolerance permanent-magnet material performance.
Embodiment 5
In the present embodiment, in addition to the raw material proportioning of alloy material A, alloy material B, alloy material C and inorganic composite materials D are different
Outside, remaining and preparation method are same as Example 1.
In the present embodiment, the raw material proportioning of permanent-magnetic composite materials is：1：0.16：0.019：0.009.
The weight percentage of each ingredient is in alloy material A：B 8%, Nd 30%, Bi 2%, Hf 2%, Ce
Remaining Fe of 0.8%, S 0.15%；
The weight percentage of each ingredient is in alloy material B：C 0.02%；Mn 0.6%, Si 0.6% S 0.06%, P
0.05%, Nd 7%, Hf 1.4%, Ce 0.13%, remaining Fe；
The weight percentage of each ingredient is in alloy material C：Te 18%, In 8%, Bi 6%, Nd 0.09%, Ce
0.07%, Hf 0.006%, remaining Pb；
The weight percentage of each ingredient is in inorganic composite materials D：Al2O320%, CrO39%, ZnO 5%, MnO
4%, Li2O 6%, Fe2O30.6%, NiSO40.6%, K2O 5%, B2O35%, HfO2 0.005%, Nd2O3
0.005%, Ce2O30.004%, remaining SiO2。
It analyzes after testing, the maximum magnetic energy product of permanent-magnetic composite materials is 53 (BH) max/MGOe, coercivity 20.1Hcj/
KOe；Remanent magnetism is 14.6Br/ KGs.It is found that the sexuality for the temperature tolerance permanent-magnet material that the embodiment obtains is less than embodiment 1-3
Temperature tolerance permanent-magnet material performance.
The above are preferred embodiments of the present invention, all any changes made according to the technical solution of the present invention, and generated function is made
When with range without departing from technical solution of the present invention, all belong to the scope of protection of the present invention.
Claims (7)
1. a kind of permanent-magnetic composite materials, which is characterized in that the permanent-magnetic composite materials are by alloy material A, alloy material B, alloy material
Material C and inorganic composite materials D mixed sinterings are made；Wherein：
The weight percentage of each ingredient is in alloy material A：B 3~6%, Nd25~28%, Bi 0.8~1.2%, Hf
Remaining Fe of 0.8~1.3%, Ce 0.1~0.5%, S 0.05~0.09%；
The weight percentage of each ingredient is in alloy material B：C 0.09~0.15%；Mn 0.25~0.55%, Si 0.30-
0.4%；S 0.02-0.045%, P 0.02-0.045%, Nd 3-6%, Hf 0.8~1.1%, Ce 0.05~0.09%,
Remaining Fe；
The weight percentage of each ingredient is in alloy material C：Te 12-16%, In 2-5%, Bi 2-5%, Nd 0.02~
0.05%, Ce 0.01~0.05%, Hf 0.001~0.004%, remaining Pb；
The weight percentage of each ingredient is Al in inorganic composite materials D2O315-18%, CrO35-7%, ZnO 1-3%,
MnO 1-3%, Li2O 3-5%, Fe2O30.1-0.4%, NiSO40.1-0.3%, K2O 2-4%, B2O32-3.5%,
HfO20.001-0.003%, Nd2O3 0.001-0.003%, Ce2O30.001-0.003%, remaining SiO2。
2. permanent-magnetic composite materials according to claim 1, which is characterized in that alloy material A, alloy material B, alloy material
C and inorganic composite materials D weight ratios are 1：（0.09-0.15）：（0.010-0.018）：（0.003-0.007）.
3. a kind of preparation method of permanent-magnetic composite materials, includes the following steps：
Step 1 prepares alloy material A, alloy material B, alloy material C and inorganic composite materials D respectively；
Step 2, by alloy material A, alloy material B, alloy material C and inorganic composite materials D weight ratios be 1：（0.09-
0.15）：（0.010-0.018）：（0.003-0.007）Dispensing is carried out, is added in three-dimensional mixer and is uniformly mixed, obtain mixed powder
Material；
Mixed powder is orientated by step 3 in Magnetic field press, is molded using isostatic pressed mode, is obtained molded blank；
Molded blank is put into sintering furnace and is sintered by step 4 under protection of argon gas, is first warming up to 630-680 DEG C, keeps the temperature 3-
4h then heats to 950-1110 DEG C of sintering 3-4h；
Step 5 after being cooled to room temperature, carries out double tempering processing, i.e., is heat-treated back respectively at 690-730 DEG C and 550-590 DEG C
Fiery 1-2h；10-12 hours postcoolings of finally heated 210-250 DEG C of heat preservation, obtain permanent-magnetic composite materials product.
4. the preparation method of permanent-magnetic composite materials according to claim 3, which is characterized in that in step 1, alloy material A
In the weight percentage of each ingredient be：B 3~6%, Nd 25~28%, Bi 0.8~1.2%, Hf 0.8~1.3%, Ce
0.1~0.5%, S 0.05~0.09%, remaining Fe.
5. the preparation method of permanent-magnetic composite materials according to claim 3, which is characterized in that in step 1, alloy material B
In the weight percentage of each ingredient be：C 0.09~0.15%；Mn 0.25~0.55%, Si 0.30-0.4%；S 0.02-
0.045%, P 0.02-0.045%, Nd 3-6%, Hf 0.8~1.1%, Ce 0.05~0.09%, remaining Fe.
6. the preparation method of permanent-magnetic composite materials according to claim 3, which is characterized in that in step 1, alloy material C
In the weight percentage of each ingredient be：Te 12-16%, In 2-5%, Bi 2-5%, Nd 0.02~0.05%, Ce
0.01~0.05%, Hf 0.001~0.004%, remaining Pb.
7. the preparation method of permanent-magnetic composite materials according to claim 3, which is characterized in that in step 1, inorganic compounding material
The weight percentage of each ingredient is in material D：Al2O315-18%, CrO35-7%, ZnO 1-3%, MnO 1-3%, Li2O
3-5%, Fe2O30.1-0.4%, NiSO40.1-0.3%, K2O 2-4%, B2O32-3.5%, HfO2 0.001-
0.003%, Nd2O3 0.001-0.003%, Ce2O30.001-0.003%, remaining SiO2。
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| CN108922711A (en) * | 2018-08-16 | 2018-11-30 | 安徽信息工程学院 | Rare earth modified material and preparation method thereof |
| CN109166718A (en) * | 2018-08-16 | 2019-01-08 | 安徽信息工程学院 | The preparation method of magnetic function material |
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| US6529788B1 (en) * | 1998-12-15 | 2003-03-04 | Ricoh Company, Ltd. | Recycling system and recycling method |
| CN107799256A (en) * | 2017-11-16 | 2018-03-13 | 南京信息工程大学 | A kind of permanent-magnetic composite materials and preparation method |
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| US6529788B1 (en) * | 1998-12-15 | 2003-03-04 | Ricoh Company, Ltd. | Recycling system and recycling method |
| CN107799256A (en) * | 2017-11-16 | 2018-03-13 | 南京信息工程大学 | A kind of permanent-magnetic composite materials and preparation method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108922711A (en) * | 2018-08-16 | 2018-11-30 | 安徽信息工程学院 | Rare earth modified material and preparation method thereof |
| CN109166718A (en) * | 2018-08-16 | 2019-01-08 | 安徽信息工程学院 | The preparation method of magnetic function material |
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Application publication date: 20180810 |