CN110335751A - A kind of preparation method of neodymium iron boron magnetic body surface abrasion resistance erosion resistant coating - Google Patents
A kind of preparation method of neodymium iron boron magnetic body surface abrasion resistance erosion resistant coating Download PDFInfo
- Publication number
- CN110335751A CN110335751A CN201910487072.6A CN201910487072A CN110335751A CN 110335751 A CN110335751 A CN 110335751A CN 201910487072 A CN201910487072 A CN 201910487072A CN 110335751 A CN110335751 A CN 110335751A
- Authority
- CN
- China
- Prior art keywords
- neodymium iron
- iron boron
- magnetic body
- boron magnetic
- preparation
- 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
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
- C23C14/14—Metallic material, boron or silicon
- C23C14/18—Metallic material, boron or silicon on other inorganic substrates
-
- 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
- H01F41/02—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 for manufacturing cores, coils, or magnets
- H01F41/0253—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 for manufacturing cores, coils, or magnets for manufacturing permanent magnets
- H01F41/026—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 for manufacturing cores, coils, or magnets for manufacturing permanent magnets protecting methods against environmental influences, e.g. oxygen, by surface treatment
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/28—Nitrogen-containing compounds
- C08K2003/282—Binary compounds of nitrogen with aluminium
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
Abstract
The invention discloses belonging to magnetic material technical field, in particular to a kind of preparation method of neodymium iron boron magnetic body surface abrasion resistance erosion resistant coating, mainly comprise the steps that 1., anticorrosive materials prepare；2., anticorrosive materials coat neodymium iron boron magnetic body；3., sintering anticorrosive materials；4., aluminium powder coating cladding.Preparation method of the present invention is simple and convenient to operate and convenient for yield, in addition, its neodymium iron boron magnetic body obtained has the characteristics that excellent wear-resisting property, corrosion resistance, combination fastness height and mechanical strength.
Description
Technical field
The invention belongs to magnetic material technical field, in particular to a kind of preparation side of neodymium iron boron magnetic body surface abrasion resistance erosion resistant coating
Method.
Background technique
Sintered NdFeB magnet has excellent remanent magnetism, coercivity and magnetic energy product, the referred to as present age " magnetic king ", therefore wide
It is general to be applied to the numerous areas such as hardware appliance, medical instrument, wind-power electricity generation, automobile, aerospace, hard-core technology.It is sintered neodymium iron
Boron magnet is the pillar of rare earth permanent-magnetic material, but Sintered NdFeB magnet is by main phase Nd2Fe14B, rich-Nd phase and richness B phase composition,
The chemical activity of middle metal Nd element is most strong, is easily corroded in moist, high temperature and electrochemical environment, seriously limits burning
Tie the further expansion of neodymium iron boron magnets application field.
It is main at present that Sintered NdFeB magnet is improved using addition alloying element method and surfacecti proteon method two ways
Corrosion resistance.Addition alloying element method can improve the corrosion resisting property of magnet to a certain extent, but anticorrosion ability is not
Obviously, therefore, industrial that corrosion protection processing is mainly carried out to Sintered NdFeB magnet using surfacecti proteon method.
Common surface protection process has plating, chemical plating, organic coating, physical vapour deposition (PVD) and compound in industrial production
Coating.Plating and chemical plating can bring problem of environmental pollution, and coating poor corrosion resistance and chemical-resistant stability are low, protection
The effect is unsatisfactory；Application and immature, and early period equipment of the physical gaseous phase deposition coating on Sintered NdFeB magnet surface
Input cost is higher；Organic coating mainly has ability cathode electrophoresis epoxy coating, phosphating coat etc., but the mechanical property of organic coating
Can be too poor, it is difficult to meet requirement in the case where there is the operating condition of intensity and hardness requirement.
Therefore, a kind of preparation method of wear-and corrosion-resistant layer is researched and developed to guarantee neodymium iron boron magnetic body excellent wear-resisting property and corrosion resistant
Corrosion energy is current technical problem urgently to be solved.
Summary of the invention
In view of the deficiencies of the prior art, the present invention intends to provide a kind of neodymium iron boron magnetic body surface abrasion resistance anti-corrosion
The preparation method of layer, so that its neodymium iron boron magnetic body obtained has excellent wear-resisting property and corrosion resistance.
To achieve the above object, the present invention provides the following technical scheme that
A kind of preparation method of neodymium iron boron magnetic body surface abrasion resistance erosion resistant coating, comprising the following steps:
1., anticorrosive materials prepare
By weight it is 1:(0.2-0.4 by organic binder, organic lubricant, aluminium nitride powder and curing agent): (2-3):
(0.05-0.08) is sufficiently mixed, and anticorrosive materials are made；
2., anticorrosive materials coat neodymium iron boron magnetic body
Neodymium iron boron magnetic body is preheated, then anticorrosive materials are coated uniformly on to the surface of neodymium iron boron magnetic body, neodymium iron boron crude product is made；
3., sintering anticorrosive materials
Neodymium iron boron crude product is placed in 1000 DEG C of -1100 DEG C of temperature, while being passed through inert gas, 30min-45min is sintered, obtains
Sintering feed；
4., aluminium powder coating cladding
When material to be sintered is cooled to 700 DEG C -750 DEG C, aluminium powder is coated on to the surface of sintering feed using physical vaporous deposition, it is cold
But to room temperature, wear-and corrosion-resistant layer is formed on the surface of neodymium iron boron magnetic body.
By using above-mentioned technical proposal, aluminium nitride powder hardness with higher and temperature stability, by organic
Lubricant is dispersed in organic binder, then realizes aluminium oxide and neodymium iron boron magnetic materials by organic binder and curing agent
Bonding, the neodymium iron boron magnetic materials after preheating can accelerate the flowing velocity of anticorrosive materials when contacting anticorrosive materials, promote the rapid edge of anticorrosive materials
Magnet surface spreading open realize magnet package, improve the mechanical strength of neodymium iron boron magnetic body.
During the sintering process, under the protection of inert gas, burning is main for organic binder, organic lubricant and curing agent
The product of generation be carbon dioxide and water, at the same time, moreover it is possible to promote to deposit between neodymium iron boron magnetic body and the interface of wear-and corrosion-resistant layer
In the phase counterdiffusion of element, increase the wear-resisting binding force with anticorrosive materials of neodymium iron boron magnetic body.
Aluminium powder soil is finally coated on to the surface of sintering feed using physical vaporous deposition, aluminium powder is under the preheating of sintering feed
It melts, and then can preferably be filled in organic binder and organic lubricant is sintered the hole to be formed and is filled, with
Aluminium nitride forms the protective layer of one layer of compact structure, effectively improves the corrosion resistance of neodymium iron boron magnetic body.In addition, due to the tool of aluminium film
There are excellent plasticity and toughness, it can provide good buffer function as a result, for aluminium nitride, so that wear-and corrosion-resistant layer obtained is with excellent
Different toughness.
Therefore, the characteristics of wear-and corrosion-resistant layer produced by the present invention has both aluminium film and aluminium nitride film, and itself and neodymium iron boron magnetic body
It is firmly combined, there is good corrosion resistance and wearability.
Further, step 1. in, the organic binder be bisphenol f type epoxy resin and ethyl cellulose mixing
Object.
Further, step 1. in, the weight ratio of the bisphenol f type epoxy resin and ethyl cellulose is 3:1.
By using above-mentioned technical proposal, bisphenol f type epoxy resin is liquid, viscosity ((25 DEG C) 2000-
It 5000mPas) is significantly lower than bisphenol A type epoxy resin ((25 DEG C) 5000-25000mPas), but it is its impact resistance, resistance to
Corrosive nature is better than bisphenol A type epoxy resin, and bisphenol f type epoxy resin usually contains a small amount of branch, works as bisphenol F type epoxy
When the epoxy group of resin captures aluminium nitride, these branches can play certain locking effect, increase bisphenol F type epoxy tree
Dispersion stabilization between rouge and aluminium nitride.
In addition, when bisphenol f type epoxy resin and ethyl cellulose are used in compounding by the weight ratio of 3:1, bisphenol F type epoxy
The viscosity of resin can effectively improve, thus while guaranteeing the stability between each ingredient of anticorrosive materials, moreover it is possible to increase
The initial combination fastness of anticorrosive materials and neodymium iron boron magnetic materials.In addition, bisphenol f type epoxy resin and ethyl cellulose are by C, H, O
Three kinds of elements are constituted, and thus, it is possible to reduce the pollution in its sintering process to environment.
Further, step 1. in, the organic lubricant be silicone powder.
By using above-mentioned technical proposal, silicone is commonly called as silicone oil or dimethicone, and being added in the form of a powder can be just
It is dispersed in aluminium nitride powder in it, is reduced a possibility that aluminium nitride is reunited with this, guarantee the excellent increasing of aluminium nitride
Potent fruit.
Further, step 1. in, the aluminium nitride powder be micron order.
By using above-mentioned technical proposal, micron-sized aluminium nitride powder can be reduced between powder relative to nanoscale and be sent out
Raw the phenomenon that reuniting, although its structural molecule is larger, it is equally reached the mechanical performance with nanoscale aluminium nitride,
On the basis of this, micron-sized aluminium nitride powder cost is lower, and thus, it is possible to can reduce neodymium iron boron magnetic body to a certain extent
It is surface-treated cost.
Further, step 2. in, the preheating temperature of the neodymium iron boron magnetic body is 160 DEG C -170 DEG C.
By using above-mentioned technical proposal, at 160 DEG C -180 DEG C, organic binder and organic lubricant are all had well
Mobility, wherein ethyl cellulose and silicone are able to achieve melting so that anticorrosive materials it is continuous whole be coated on neodymium-iron-boron
The surface of body.
Further, step 3. in, the inert gas is one of nitrogen, argon gas, helium, neon or a variety of mixed
Close object.
By using above-mentioned technical proposal, nitrogen, helium, helium and neon are relatively stable in above-mentioned preparation process, energy
It is enough that good protective action played to neodymium iron boron magnetic body, and the inertia other be easy to get relative to other inert gases are relatively easy,
It can be effectively reduced the surface treatment cost of neodymium iron boron magnetic body.
Further, step 3. in, the flow of nitrogen accounts for the 30%-40% of total flow in the inert gas.
By using above-mentioned technical proposal, when the flow of nitrogen in inert gas accounts for the 30%-40% of total flow, nitrogen
It can be to the preferable rate for reducing oxidized aluminum nitride and decomposing, so that the mechanical strength of its wear-and corrosion-resistant layer obtained is obvious
Better than not within this range when mechanical strength.
Further, step 4. in, the sintering feed is cooled to 700 DEG C -800 DEG C with the speed of 8 DEG C/min.
By using above-mentioned technical proposal, sintering feed cools down by the speed of 8 DEG C/min, enable to neodymium iron boron magnetic body with it is resistance to
The combination for grinding erosion resistant coating is more secured, while helping to reduce its internal stress, improves the machinery of neodymium iron boron magnetic body wear-and corrosion-resistant layer
Intensity and toughness.
Further, step 4. in, the wear-and corrosion-resistant layer with a thickness of 5 μm -8 μm.
By using above-mentioned technical proposal, the thickness of wear-and corrosion-resistant layer of the invention just can have excellent at 5 μm -8 μm
Mechanical strength, toughness and rotproofness performance, surface modification is subject to the identical neodymium iron boron magnetic body of specification, using the present invention make
The volume of the neodymium iron boron magnetic materials obtained is smaller, and material utilization amount is less, can reduce neodymium iron boron magnetic body surface to a certain extent with this
The cost of processing.
In conclusion the invention has the following advantages:
1, the present invention is prepared by anticorrosive materials, anticorrosive materials coat neodymium iron boron magnetic body, the preparation of sintering anticorrosive materials, aluminium powder coating package
Method, so that the characteristics of wear-and corrosion-resistant layer obtained has both aluminium film and aluminium nitride film, and be firmly combined with neodymium iron boron magnetic body, have
Good corrosion resistance and wearability；
2, the organic binder in the present invention passes through bisphenol f type epoxy resin and ethyl cellulose by the weight of 1:(0.1-0.3)
Than compounding, with this while guaranteeing the stability between each ingredient of anticorrosive materials, moreover it is possible to increase anticorrosive materials and neodymium-iron-boron
The initial combination fastness of material；
3, the present invention accounts for the 30%-40% of total flow by further limiting the flow of nitrogen in inert gas, makes it with this
Wear-and corrosion-resistant layer obtained has excellent mechanical strength.
Detailed description of the invention
Fig. 1 is the operating procedure figure for preparing neodymium iron boron magnetic body surface abrasion resistance erosion resistant coating.
Specific embodiment
Below in conjunction with attached drawing, invention is further described in detail.
Embodiment 1
A kind of preparation method of neodymium iron boron magnetic body surface abrasion resistance erosion resistant coating, comprising the following steps:
1., anticorrosive materials prepare
By weight be 1:0.2:2:0.05, successively weigh the organic binder of 100kg, the silicone powder of 20kg, 200kg it is micro-
The beta-hydroxyethyl ethylenediamine (120 curing agent) of meter level aluminium nitride powder and 5kg puts into blender and is sufficiently mixed, and anti-corrosion is made
Material；
Wherein, organic binder by bisphenol f type epoxy resin CYDF-180 and ethyl cellulose by the weight ratio compounding of 1:1 and
At.
2., anticorrosive materials coat neodymium iron boron magnetic body
Neodymium iron boron magnetic body is preheated to 160 DEG C, anticorrosive materials are then coated uniformly on neodymium iron boron magnetic body using electrostatic painting process
Surface, electrostatic spraying voltage 50V, gun slot is 10cm at a distance from neodymium iron boron magnetic body to be painted, and the pressure of spray gun argon gas is
Neodymium iron boron crude product is made in 0.6MPa；
3., sintering anticorrosive materials
Neodymium iron boron crude product is placed in 1000 DEG C of temperature, while argon gas is passed through with the flow velocity of 40mL/min, 30min is sintered, obtains
Sintering feed；
4., aluminium powder coating cladding
Cooled down with the speed of 8 DEG C/min, when material to be sintered is cooled to 700 DEG C, using physical vaporous deposition by nano aluminum
Powder is coated on the surface of sintering feed, vacuum degree 10Pa, and ion bombardment voltage is 200V, is 10min, natural cooling from the time is hit
Neodymium iron boron magnetic body is taken out to room temperature, the wear-and corrosion-resistant layer of 5 μ m-thicks is formed on the surface of neodymium iron boron magnetic body.
Embodiment 2- embodiment 6
Embodiment 2- embodiment 6 is on the basis of the method for embodiment 1, to organic binder, organic lubricant, aluminium nitride powder
It makes adjustment with the component and ratio of curing agent, the specific situation that adjusts is referring to following table one, unit kg.
The component and component ratio of one embodiment 1- embodiment 6 of table
Embodiment 7- embodiment 12
Preheating temperature, neodymium iron boron crude product of the embodiment 7- embodiment 12 on the basis of the method for embodiment 1, to neodymium iron boron magnetic body
Sintering temperature and the time, inert gas, the cooling rate of sintering feed and temperature, wear-and corrosion-resistant layer thickness adjust, have
Body adjusts situation referring to following table two.
To the process parameter table of neodymium iron boron magnetic body surface treatment in two embodiment 1 of table, embodiment 7-12
Comparative example 1
For this comparative example on the basis of the method for embodiment 1,2. the sintering anticorrosive materials step of removal step 3. obtains neodymium iron in step
Aluminium powder is directly coated on to physical vaporous deposition the surface of neodymium iron boron crude product after boron crude product.
Comparative example 2
In this comparative example, the temperature of sintering feed is directly down to room temperature, is then again coated on aluminium powder using material vapour deposition process
The surface of sintering feed.
Performance detection
Neodymium iron boron magnetic body after above-described embodiment 1-12 and comparative example 1-2 surface treated is performed the following performance tests, is examined
Result is surveyed referring to following table three.
1, corrosion resistance: using neutral salt spray test, and measurement sample reaches salt spray test duration when identical extent of corrosion,
Actual conditions are as follows: 45 DEG C of chambers, brine volume specific concentration are 5%, are measured using continuously spraying test method.
2, it wearability: is tested using scraped finish, respectively with the sand paper of 100 mesh in 50N/cm2Pressure under sample is scraped
Mill, observes the extent of damage of sample coatings, the extent of damage is defined as follows:
0 grade: no marking；
1 grade: having 1-2 scratch；
2 grades: having 3-4 scratch；
3 grades: having 5-6 scratch；
4 grades: having 7-9 scratch；
5 grades: having 10 or more scratches.
3, combination fastness: using adherence belt stripping test, draws " well " word with single side cutting blade, incision tool marks are wanted
With point of a knife, the opposite vertical coating surface of coating surface point of a knife penetrates through film, then every cut mark interval 1mm is pasted with 600 adhesive tapes of 3M
On drawing the product sample for having " well " word, the adhesive tape for uncovering one end carries out moment pull, records the state of coating.
4, mechanical strength: being tested using compressive strength, and specimen size is φ 10 × 9, is tested by RSA-20 electronic universal
Machine measurement.
The testing result of table three embodiment 1-12 and comparative example 1-2
Referring to table three, embodiment 1 and the testing result of comparative example 1 and comparative example 2 are compared, it is available, by neodymium
Iron boron crude product, which is placed in 1000 DEG C -1100 DEG C, to be sintered 30min-45min and is coated on aluminium powder using physical vaporous deposition
The preparation step to cool down again behind the surface of sintering feed can promote the wear-and corrosion-resistant layer of neodymium iron boron magnetic body obtained to have excellent
Antiseptic property and wear-resisting property, while there is good combination fastness compressive strength.
The testing result of embodiment 1 and embodiment 2- embodiment 6 is compared, it is available, when organic binder is excellent
Be selected as by weight be 3:1 bisphenol f type epoxy resin and ethyl cellulose mixture, organic lubricant be silicone powder,
When aluminium nitride powder is nanoscale, the wear-and corrosion-resistant layer salt spray test duration of neodymium iron boron magnetic body obtained, which is considerably longer than, uses it
He adjusts wear-and corrosion-resistant layer salt spray test duration obtained, so that the wear-and corrosion-resistant side layer salt fog of neodymium iron boron is with good
Corrosion resistance and wearability.
The testing result of embodiment 1 and comparative example 7- comparative example 13 is compared, it is available, when nitrogen in inert gas
The flow of gas accounts for the 30%-40% of total flow, sintering feed and is cooled to 700 DEG C -800 DEG C, wear-and corrosion-resistant layer with the speed of 8 DEG C/min
With a thickness of 5 μm -8 μm when, wearability, anti-corrosive properties and the compressive strength of wear-and corrosion-resistant layer obtained are substantially better than other processing
Under the conditions of wear-and corrosion-resistant layer obtained.
To sum up, the wear-and corrosion-resistant layer of neodymium iron boron magnetic body produced by the present invention has excellent anti-corrosive properties, wearability, in conjunction with jail
In addition soundness and mechanical strength have the characteristics that preparation method is simple, is convenient for large-scale production.
This specific embodiment is only explanation of the invention, is not limitation of the present invention, those skilled in the art
Member can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but as long as at this
All by the protection of Patent Law in the scope of the claims of invention.
Claims (10)
1. a kind of preparation method of neodymium iron boron magnetic body surface abrasion resistance erosion resistant coating, which comprises the following steps:
1., anticorrosive materials prepare
By weight it is 1:(0.2-0.4 by organic binder, organic lubricant, aluminium nitride powder and curing agent): (2-3):
(0.05-0.08) is sufficiently mixed, and anticorrosive materials are made；
2., anticorrosive materials coat neodymium iron boron magnetic body
Neodymium iron boron magnetic body is preheated, then anticorrosive materials are coated uniformly on to the surface of neodymium iron boron magnetic body, neodymium iron boron crude product is made；
3., sintering anticorrosive materials
Neodymium iron boron crude product is placed in 1000 DEG C of -1100 DEG C of temperature, while being passed through inert gas, 30min-45min is sintered, obtains
Sintering feed；
4., aluminium powder coating cladding
When material to be sintered is cooled to 700 DEG C -750 DEG C, aluminium powder is coated on to the surface of sintering feed using physical vaporous deposition, it is cold
But to room temperature, wear-and corrosion-resistant layer is formed on the surface of neodymium iron boron magnetic body.
2. a kind of preparation method of neodymium iron boron magnetic body surface abrasion resistance erosion resistant coating according to claim 1, which is characterized in that step
Suddenly 1. in, the organic binder be bisphenol f type epoxy resin and ethyl cellulose mixture.
3. a kind of preparation method of neodymium iron boron magnetic body surface abrasion resistance erosion resistant coating according to claim 2, which is characterized in that step
Suddenly 1. in, the weight ratio of the bisphenol f type epoxy resin and ethyl cellulose is 3:1.
4. a kind of preparation method of neodymium iron boron magnetic body surface abrasion resistance erosion resistant coating according to claim 1, which is characterized in that step
Suddenly 1. in, the organic lubricant be silicone powder.
5. a kind of preparation method of neodymium iron boron magnetic body surface abrasion resistance erosion resistant coating according to claim 1, which is characterized in that step
Suddenly 1. in, the aluminium nitride powder be micron order.
6. a kind of preparation method of neodymium iron boron magnetic body surface abrasion resistance erosion resistant coating according to claim 1, which is characterized in that step
Suddenly 2. in, the preheating temperature of the neodymium iron boron magnetic body is 160 DEG C -170 DEG C.
7. a kind of preparation method of neodymium iron boron magnetic body surface abrasion resistance erosion resistant coating according to claim 1, which is characterized in that step
Suddenly 3. in, the inert gas be one of nitrogen, argon gas, helium, neon or a variety of mixtures.
8. a kind of preparation method of neodymium iron boron magnetic body surface abrasion resistance erosion resistant coating according to claim 7, which is characterized in that step
Suddenly 3. in, the flow of nitrogen accounts for the 30%-40% of total flow in the inert gas.
9. a kind of preparation method of neodymium iron boron magnetic body surface abrasion resistance erosion resistant coating according to claim 1, which is characterized in that step
Suddenly 4. in, the sintering feed is cooled to 700 DEG C -800 DEG C with the speed of 8 DEG C/min.
10. a kind of preparation method of neodymium iron boron magnetic body surface abrasion resistance erosion resistant coating according to claim 1, which is characterized in that
Step 4. in, the wear-and corrosion-resistant layer with a thickness of 5 μm -8 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910487072.6A CN110335751A (en) | 2019-06-05 | 2019-06-05 | A kind of preparation method of neodymium iron boron magnetic body surface abrasion resistance erosion resistant coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910487072.6A CN110335751A (en) | 2019-06-05 | 2019-06-05 | A kind of preparation method of neodymium iron boron magnetic body surface abrasion resistance erosion resistant coating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110335751A true CN110335751A (en) | 2019-10-15 |
Family
ID=68140794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910487072.6A Pending CN110335751A (en) | 2019-06-05 | 2019-06-05 | A kind of preparation method of neodymium iron boron magnetic body surface abrasion resistance erosion resistant coating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110335751A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110890212A (en) * | 2019-12-11 | 2020-03-17 | 杭州美时美刻物联网科技有限公司 | Manufacturing method of anti-corrosion permanent magnet device for servo motor |
| CN117143497A (en) * | 2023-07-28 | 2023-12-01 | 浙江大学 | Preparation method of high-corrosion-resistance wear-resistance neodymium-iron-boron magnet anticorrosive paint |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85109695A (en) * | 1984-12-24 | 1986-10-01 | 住友特殊金属株式会社 | Manufacturing has the method for improving corrosion resistance magnet |
| JPH1074607A (en) * | 1996-08-30 | 1998-03-17 | Sumitomo Special Metals Co Ltd | Corrosion-resisting permanent magnet and its manufacture |
| CN104018133A (en) * | 2014-06-04 | 2014-09-03 | 北京汇磁粉体材料有限公司 | Multilayer composite protective coating on surface of sintered NdFeB magnet by multi-arc ion plating and process thereof |
| CN107931062A (en) * | 2017-11-23 | 2018-04-20 | 安徽大地熊新材料股份有限公司 | A kind of preparation method of Sintered NdFeB magnet surface abrasion resistance corrosion-inhibiting coating |
-
2019
- 2019-06-05 CN CN201910487072.6A patent/CN110335751A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85109695A (en) * | 1984-12-24 | 1986-10-01 | 住友特殊金属株式会社 | Manufacturing has the method for improving corrosion resistance magnet |
| JPH1074607A (en) * | 1996-08-30 | 1998-03-17 | Sumitomo Special Metals Co Ltd | Corrosion-resisting permanent magnet and its manufacture |
| CN104018133A (en) * | 2014-06-04 | 2014-09-03 | 北京汇磁粉体材料有限公司 | Multilayer composite protective coating on surface of sintered NdFeB magnet by multi-arc ion plating and process thereof |
| CN107931062A (en) * | 2017-11-23 | 2018-04-20 | 安徽大地熊新材料股份有限公司 | A kind of preparation method of Sintered NdFeB magnet surface abrasion resistance corrosion-inhibiting coating |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110890212A (en) * | 2019-12-11 | 2020-03-17 | 杭州美时美刻物联网科技有限公司 | Manufacturing method of anti-corrosion permanent magnet device for servo motor |
| CN110890212B (en) * | 2019-12-11 | 2021-07-20 | 杭州美时美刻物联网科技有限公司 | Manufacturing method of anti-corrosion permanent magnet device for servo motor |
| CN117143497A (en) * | 2023-07-28 | 2023-12-01 | 浙江大学 | Preparation method of high-corrosion-resistance wear-resistance neodymium-iron-boron magnet anticorrosive paint |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9982142B2 (en) | Zinc-rich epoxy anti-corrosion coating and preparation method thereof | |
| CN107931062B (en) | Preparation method of wear-resistant and anti-corrosion coating on surface of sintered neodymium-iron-boron magnet | |
| CN105088108B (en) | Iron-base amorphous alloy, powder material of alloy and wear-resisting anticorrosion coating of alloy | |
| CN107964351A (en) | A kind of water-based composite zinc-aluminum anticorrosive paint | |
| CN101781521B (en) | Paint and coating | |
| CN110335751A (en) | A kind of preparation method of neodymium iron boron magnetic body surface abrasion resistance erosion resistant coating | |
| CN105295646A (en) | Acid-resisting, wear-resisting and corrosion-resisting flexible ceramic coating composition and preparing method thereof | |
| CN109841367A (en) | Rare-earth bound magnetic powder and preparation method thereof and bonded permanent magnet | |
| CN105885564A (en) | Fully-organic multiply-fluorinated epoxy super-hydrophobic composite coating and preparation method and utilization method thereof | |
| CN103588443A (en) | Nano water-based functional ceramic composite coating and preparation method thereof | |
| CN105602372A (en) | Magnesium alloy surface protective high-hardness corrosion resistance composite coating and preparation method thereof | |
| Chen et al. | Facile preparation of superamphiphobic phosphate–Cu coating on iron substrate with mechanical stability, anti-frosting properties, and corrosion resistance | |
| Chen et al. | Corrosion resistance of T-ZnOw/PDMS-MAO composite coating on the sintered NdFeB magnet | |
| CN108611672A (en) | Hard Anodic Oxidation of Aluminum Alloy electrolyte, preparation method and application | |
| CN111548705A (en) | Titanium nano polymer resin and preparation method and application thereof | |
| CN108546459A (en) | A kind of environmentally friendly Waterproof corrosion high-performance coating and preparation method | |
| CN115055687B (en) | Production method of zinc-aluminum alloy-graphene composite powder material | |
| CN107424829A (en) | The preparation method of corrosion-resistant Ne-Fe-B magnet | |
| CN109054625B (en) | Composite polyimide film for air bearing and preparation method thereof | |
| CN105985702B (en) | A kind of Chrome-free novel protective coating used for magnesium alloy and preparation method thereof | |
| Sharma et al. | Corrosion and wear study of Ni-P-PTFE-Al2O3 coating: the effect of heat treatment | |
| CN106833335A (en) | A kind of utilization nano graphite flakes and the composite modified anticorrosive paint of rare earth oxide | |
| CN108624827A (en) | A kind of preparation method of ultra-low magnetic corrosion-protection iron base non-crystaline amorphous metal, powder and its coating | |
| Gao et al. | Influence of the bath pH value on the microstructure and properties of a novel electrodeposited Ni-W-Ti3C2TX composite coating | |
| CN110117785A (en) | A kind of preparation method of aluminum alloy surface chromium-phosphorus-free chemical films |
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: 20191015 |
|
| RJ01 | Rejection of invention patent application after publication |