CN107063803A - The preparation method of neodymium iron boron metallographic - Google Patents
The preparation method of neodymium iron boron metallographic Download PDFInfo
- Publication number
- CN107063803A CN107063803A CN201710318259.4A CN201710318259A CN107063803A CN 107063803 A CN107063803 A CN 107063803A CN 201710318259 A CN201710318259 A CN 201710318259A CN 107063803 A CN107063803 A CN 107063803A
- Authority
- CN
- China
- Prior art keywords
- sample
- metallographic
- iron boron
- neodymium iron
- preparation
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- 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.)
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
Abstract
The invention discloses a kind of preparation method of neodymium iron boron metallographic, it includes：Grinding and buffing will be carried out on sample fixed pedestal to be seen, the pedestal is tested the leftover pieces produced by neodymium iron boron magnetic body and is made.The pedestal chooses a diameter of 8 12mm, highly the sample post or leftover pieces for 8 15mm.The preparation method of neodymium iron boron metallographic of the present invention, step is simple, can simplify button shape of the thickness less than 4mm or annular finished product sheet and the metallographic preparation process for getting rid of strap, the leftover pieces produced are rationally tested using neodymium iron boron, cost of supplementary product is reduced.
Description
Technical field
The present invention relates to the preparation method of a kind of neodymium iron boron magnetic body or semi-finished product.It is more particularly related to a kind of
The preparation method of neodymium iron boron metallographic.
Background technology
Sintered NdFeB produce and study in, control magnet or get rid of strap metallographic structure it is most important.Therefore prepare
Metallographic is a common operation.Common metallographic preparation process is：1) to larger-size sample, laser cutting machine is typically used
Prepare 10mm*10mm*10mm cube, and polished with abrasive paper for metallograph, antiscuffing paste polishing.2) smaller to size or shape is not advised
Sample then, sanding and polishing process is more difficult, and sanding and polishing is carried out again after edge sample, edge sample are typically carried out to sample.For getting rid of
Strap, its very thin thickness, and material is more crisp, the section metallographic of observation thickness direction needs to carry out edge sample, for get rid of strap from
It is also such by face and the metallographic of patch roll surface.For the finished product sheet of button shape, its thickness is about 3mm, and diameter is about 8mm, generally
Way be also edge sample processing.
Button shape for very thin thickness or annular finished product sheet and get rid of the metallographic of strap and prepare, what edge sample processing was present asks
Topic is：1) testing cost is increased.Firstly the need of consume it is expensive inlay powder, and these are inlayed and can not reclaimed after powder use,
Secondly for heat edge sample, it is necessary to special mounting press.2) time-consuming for sample preparation, for heat edge sample, and whole edge sample process needs 1.5-
2h。
The content of the invention
It is an object of the invention to solve at least the above, and provide the advantage that at least will be described later.
It is a still further object of the present invention to provide a kind of preparation method of neodymium iron boron metallographic, it can simplify thickness and be less than
4mm button shape or annular finished product sheet and the metallographic preparation process for getting rid of strap.The corner produced is rationally tested using neodymium iron boron
Material, reduces cost of supplementary product.
In order to realize that there is provided a kind of preparation side of neodymium iron boron metallographic according to object of the present invention and further advantage
Method, it is characterised in that including：Grinding and buffing will be carried out on sample fixed pedestal to be seen, the pedestal is by neodymium iron boron magnetic body
The leftover pieces that test is produced are made.
Preferably, the pedestal chooses a diameter of 8-12mm, highly the sample post or leftover pieces for 8-15mm.
Preferably, the preparation method of the neodymium iron boron metallographic also includes：Pedestal, and dry for standby are cleaned with degreaser；
Demagnetization processing is carried out to the pedestal afterwards, demagnetization temperature is 380 DEG C, and the demagnetization time is 1h.
Preferably, the preparation method of the neodymium iron boron metallographic also includes：Sample pretreatment, be specially：Sample is carried out
Demagnetization is handled, and demagnetization temperature is 380 DEG C, and the demagnetization time is 1h；Cut out sample afterwards, make its grinding surface size substantially with pedestal
Section is identical.
Preferably, the preparation method of the neodymium iron boron metallographic also includes：The back side in the face to be ground of sample is applied after cutting
502 glue are smeared, and Rapid pasting is at the center of pedestal, dries standby.The pedestal for pasting sample is placed on ventilation and dried in the air 30-60s, directly
To the glue solidifies.
Preferably, described polish is specially：1) by sample slight inclination, the sharp corner and the 400 of rotation of sample is made
Mesh sand paper is contacted；
2) sample is polished with 400 mesh sand paper, 800 mesh sand paper, 1200 mesh sand paper and 2000 mesh sand paper respectively, until
Sample surfaces can't see cut.A sand paper is often changed, the polishing direction of sample will be rotated by 90 °, to remove a upper sand paper
The cut left.
Preferably, the preparation method of the neodymium iron boron metallographic also includes：The sample surfaces after polishing are entered with alcohol swab
Row cleaning, uses dryer or hair dryer by sample dry for standby after cleaning.
Preferably, the preparation method of the neodymium iron boron metallographic also includes：By the nitre of the sample surfaces immersion 3% after polishing
Corroded in sour alcohol, etching time is 1-3s, then quickly removes sample.
Preferably, the thickness of the sample is less than 4mm.
Preferably, the area of the grinding surface is not less than 2/3rds of the pedestal sectional area.
Preferably, present invention is mainly used for simplify neodymium iron boron magnetic body of the thickness less than 4mm and get rid of the metallographic system of strap
Standby process, is concretely comprised the following steps：
1) pedestal is chosen.A diameter of 8-12mm, highly the sample post or leftover pieces for 8-15mm are chosen, as preparing metallographic
Pedestal；
2) pedestal is cleaned.Pedestal, and dry for standby are cleaned with degreaser.
3) demagnetization is handled.If pedestal has magnetic, it is necessary to carry out demagnetization processing, its technique is that demagnetization temperature is 380 DEG C, demagnetization
Time is 1h；
4) sample pretreatment.If the sample of metallographic to be seen has magnetic, need to carry out demagnetization processing, its technique is demagnetization
Temperature is 380 DEG C, and the demagnetization time is 1h；Thickness of sample to be seen is less than 4mm.
5) sample is cut.According to the size of pedestal, sample is cut, makes section of the grinding surface size of sample substantially with pedestal
It is identical.
6) viscose glue.502 glue are smeared at the back side in the face to be ground of sample after cutting, and Rapid pasting is in pedestal
The heart.
7) dry.The pedestal for pasting sample is placed on into ventilation to dry in the air 30-60s, until dried.
8) sand paper is polished.The step can be subdivided into following sub-step.
(1) chamfering deburring.For the relatively sharp sample in corner, it is necessary to carry out chamfering, it is specially：Sample is slightly inclined
Tiltedly, the sharp corner of sample is made to be contacted with the 400 mesh sand paper rotated.
(2) polish.Sample is beaten with 400 mesh sand paper, 800 mesh sand paper, 1200 mesh sand paper and 2000 mesh sand paper respectively
Mill.Until sample surfaces can't see cut.
9) polish.Sample is polished with antiscuffing paste and polishing cloth, until sample surfaces are in bright minute surface.
10) cleaning, drying.The sample surfaces after polishing are cleaned with alcohol swab, dryer or hair dryer are used after cleaning
By sample dry for standby.
11) corrode.The sample surfaces of polishing are immersed and corroded in 3% nitric acid alcohol, etching time is 1-3s.So
After quickly remove sample.
12) cleaning, drying.The sample surfaces after corrosion are cleaned with alcohol or deionized water, then dried.
13) metallographic observation.Sample is placed on to the thing Microscopic observation metallographic and tissue of light microscope or electron microscope
Structure.
The present invention at least includes following beneficial effect：In actual production, meeting during the test of neodymium-iron-boron performance is found
Substantial amounts of test specimens post and leftover pieces are produced, its height is about 8-20mm, a diameter of 8-12mm.These sample posts and leftover pieces shape
It is very regular, and surface unusual light, after the completion of test, all reclaimed as waste material.Neodymium iron boron metallographic of the present invention
Preparation method is using these sample posts and leftover pieces so as to simplify neodymium iron boron metallographic preparation process.For the less sample of thickness,
Traditional heat edge sample process is taken as 1.5-2h, and the sample making course of this method only needs 5-10min.For traditional edge quadrat method,
Each sample is required for edge sample, it is necessary to consume substantial amounts of phenolic moulding powder, and these phenolic moulding powder can not reclaim again sharp after the completion of test
With.And sample making course need not inlay sample in the preparation method of neodymium iron boron metallographic of the present invention, a small amount of glue is only needed.While base
Seat is realized the effect turned waste into wealth, is substantially reduced sample preparation cost using the waste material produced by magnetism testing.At tradition edge sample
The auxiliary material of reason can not be reclaimed, and pedestal used in neodymium iron boron metallographic of the present invention reclaims convenient and swift.It is after test, speckle with sample
Pedestal through hot water simple process, it is possible to the separation of sample and pedestal is realized, so as to realize the recycling of pedestal.
Further advantage, target and the feature of the present invention embodies part by following explanation, and part will also be by this
The research and practice of invention and be understood by the person skilled in the art.
Brief description of the drawings
Fig. 1 is the structural representation for getting rid of strap sample for preparing in the preparation method of neodymium iron boron metallographic of the present invention；
Fig. 2 is the button shape magnet for preparing in the preparation method of neodymium iron boron metallographic described in one of embodiment of the invention
The structural representation of sample；
Fig. 3 is the annular magnet for preparing in the preparation method of neodymium iron boron metallographic described in one of embodiment of the invention
The structural representation of sample.
Embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings, to make those skilled in the art with reference to specification text
Word can be implemented according to this.
It should be appreciated that such as " having ", "comprising" and " comprising " term used herein are not precluded from one or many
The presence or addition of individual other elements or its combination.
Embodiment 1
As shown in figure 1, (vertical with thickness direction is flat on the strap scope of freedom of getting rid of that it is 0.35mm that sample 1 to be seen, which is thickness,
Face) metallographic observation is carried out, the present invention provides a kind of preparation method of neodymium iron boron metallographic, including：Following steps：
1) pedestal 2 is chosen.Choose a diameter of 10mm, be highly 10mm without magnetic sample post or leftover pieces, be used as and prepare gold
The pedestal of phase；
2) pedestal 2 is cleaned.Pedestal 2, and dry for standby are cleaned with degreaser.
3) sample 1 is cut.According to the size of pedestal 2, cutting gets rid of carry sample 1, makes the grinding surface size of sample 1 substantially and base
The section of seat is identical.
4) viscose glue.502 glue are smeared at the back side in the face to be ground of sample after cutting 1, and Rapid pasting is in pedestal 2
The heart.
5) dry.The pedestal 2 for pasting sample 1 is placed on into ventilation to dry in the air 30s, until dried.
6) sand paper is polished.The step can be subdivided into following sub-step.
(1) chamfering deburring.Chamfering is carried out to getting rid of carry sample, is specially：By sample slight inclination, make the angle of keenness of sample
Portion is contacted with the 400 mesh sand paper rotated.
(2) polish.Sample is beaten with 400 mesh sand paper, 800 mesh sand paper, 1200 mesh sand paper and 2000 mesh sand paper respectively
Mill.Until sample surfaces can't see cut.
7) polish.Sample is polished with antiscuffing paste and polishing cloth, until sample surfaces are in bright minute surface.
8) cleaning, drying.The sample surfaces after polishing are cleaned with alcohol swab, dryer or hair dryer are used after cleaning
By sample dry for standby.
9) corrode.The sample surfaces of polishing are immersed and corroded in 3% nitric acid alcohol, etching time is 1s.Then
Quickly remove sample.
10) cleaning, drying.The sample surfaces after corrosion are cleaned with alcohol or deionized water, then dried.
11) metallographic observation.Sample is placed on to the thing Microscopic observation metallographic and tissue of light microscope or electron microscope
Structure.
Embodiment 2
As shown in Fig. 2 the sample 1 of metallographic to be seen of the present invention is the button shape finished product sheet with magnetic, its size isThe preparation method of neodymium iron boron metallographic of the present invention, including：Following steps：
1) pedestal 2 is chosen.A diameter of 12mm, highly the sample post or leftover pieces (band magnetic) for 15mm are chosen, it is golden as preparing
The pedestal of phase；
2) pedestal 2 is cleaned.Pedestal 2, and dry for standby are cleaned with degreaser.
3) demagnetization is handled.Demagnetization processing is carried out to pedestal 2, its technique is that demagnetization temperature is 380 DEG C, and the demagnetization time is 1h；
4) sample 1 is pre-processed.Demagnetization processing is carried out to sample 1, its technique is that demagnetization temperature is 380 DEG C, and the demagnetization time is
1h；
5) viscose glue.502 glue are smeared at the back side in the face to be ground of sample 1, and Rapid pasting is at the center of pedestal.
6) dry.The pedestal 2 for pasting sample 1 is placed on into ventilation to dry in the air 60s, until dried.
7) sand paper is polished.Sample is carried out with 400 mesh sand paper, 800 mesh sand paper, 1200 mesh sand paper and 2000 mesh sand paper respectively
Polishing.Until sample surfaces can't see cut.
8) polish.Sample is polished with antiscuffing paste and polishing cloth, until the surface of sample 1 is in bright minute surface.
9) cleaning, drying.The surface of sample 1 after polishing is cleaned with alcohol swab, dryer or hair dryer are used after cleaning
By the dry for standby of sample 1.
10) corrode.The surface of sample 1 of polishing is immersed and corroded in 3% nitric acid alcohol, etching time is 3s.So
After quickly remove sample.
11) cleaning, drying.The surface of sample 1 after corrosion is cleaned with alcohol or deionized water, then dried.
12) metallographic observation.Sample 1 is placed on to the thing Microscopic observation metallographic and tissue of light microscope or electron microscope
Structure.
Embodiment 3
As shown in figure 3, sample 1 to be seen of the present invention is annular finished product sheet with holes, internal diameter isOutside
Footpath isThickness is 2mm.Product is without magnetic.The preparation method of neodymium iron boron metallographic of the present invention, including：Following steps：
1) pedestal 2 is chosen.Choose a diameter of 11mm, be highly 14mm without magnetic sample post or leftover pieces, be used as and prepare gold
The pedestal of phase；
2) pedestal 2 is cleaned.Pedestal, and dry for standby are cleaned with degreaser.
3) sample pretreatment.Demagnetization processing is carried out to sample 1, its technique is that demagnetization temperature is 380 DEG C, and the demagnetization time is
1h；
4) viscose glue.502 glue are smeared at the back side in the face to be ground of sample 1, and Rapid pasting is at the center of pedestal.
5) dry.The pedestal 2 for pasting sample 1 is placed on into ventilation to dry in the air 30s, until dried.
6) sand paper is polished.Sample 1 is entered with 400 mesh sand paper, 800 mesh sand paper, 1200 mesh sand paper and 2000 mesh sand paper respectively
Row polishing.Until cut is can't see on the surface of sample 1.
7) polish.Sample is polished with antiscuffing paste and polishing cloth, until the surface of sample 1 is in bright minute surface.
8) cleaning, drying.The surface of sample 1 after polishing is cleaned with alcohol swab, dryer or hair dryer are used after cleaning
By sample dry for standby.
9) corrode.The sample surfaces of polishing are immersed and corroded in 3% nitric acid alcohol, etching time is 1s.Then
Quickly remove sample 1.
10) cleaning, drying.The surface of sample 1 after corrosion is cleaned with alcohol or deionized water, then dried.
11) metallographic observation.Sample 1 is placed on to the thing Microscopic observation metallographic and tissue of light microscope or electron microscope
Structure.
Although embodiment of the present invention is disclosed as above, it is not restricted in specification and embodiment listed
With it can be applied to various suitable the field of the invention completely, can be easily for those skilled in the art
Other modification is realized, therefore under the universal limited without departing substantially from claim and equivalency range, the present invention is not limited
In specific details and shown here as the legend with description.
Claims (10)
1. a kind of preparation method of neodymium iron boron metallographic, it is characterised in that including：It will be polished on sample fixed pedestal to be seen
And polishing, the pedestal by neodymium iron boron magnetic body test produce leftover pieces be made.
2. the preparation method of neodymium iron boron metallographic as claimed in claim 1, it is characterised in that the pedestal chooses a diameter of 8-
12mm, highly the sample post or leftover pieces for 8-15mm.
3. the preparation method of neodymium iron boron metallographic as claimed in claim 2, it is characterised in that also include：Base is cleaned with degreaser
Seat, and dry for standby；Demagnetization processing is carried out to the pedestal afterwards, demagnetization temperature is 380 DEG C, and the demagnetization time is 1h.
4. the preparation method of neodymium iron boron metallographic as claimed in claim 3, it is characterised in that also include：Sample pretreatment, specifically
For：Sample is subjected to demagnetization processing, demagnetization temperature is 380 DEG C, and the demagnetization time is 1h；Sample is cut out afterwards, makes its grinding surface chi
It is very little identical substantially with the section of pedestal.
5. the preparation method of neodymium iron boron metallographic as claimed in claim 4, it is characterised in that also include：Sample treats after cutting
502 glue are smeared at the back side of grinding surface, and Rapid pasting is at the center of pedestal, dries standby.
6. the preparation method of neodymium iron boron metallographic as claimed in claim 1, it is characterised in that the process of the polishing is specially：
1) by sample slight inclination, the sharp corner of sample is made to be contacted with the 400 mesh sand paper rotated；
2) sample is polished with 400 mesh sand paper, 800 mesh sand paper, 1200 mesh sand paper and 2000 mesh sand paper respectively, until sample
It can't see cut in surface.
7. the preparation method of neodymium iron boron metallographic as claimed in claim 5, it is characterised in that also include：With alcohol swab to polishing
Sample surfaces afterwards are cleaned, and dryer or hair dryer are used after cleaning by sample dry for standby.
8. the preparation method of neodymium iron boron metallographic as claimed in claim 7, it is characterised in that also include：By the sample after polishing
Corroded in the nitric acid alcohol of surface immersion 3%, etching time is 1-3s, then quickly removes sample.
9. the preparation method of neodymium iron boron metallographic as claimed in claim 1, it is characterised in that the thickness of the sample is less than 4mm.
10. the preparation method of neodymium iron boron metallographic as claimed in claim 3, it is characterised in that the area of the grinding surface is not small
In 2/3rds of the pedestal sectional area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710318259.4A CN107063803A (en) | 2017-05-08 | 2017-05-08 | The preparation method of neodymium iron boron metallographic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710318259.4A CN107063803A (en) | 2017-05-08 | 2017-05-08 | The preparation method of neodymium iron boron metallographic |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107063803A true CN107063803A (en) | 2017-08-18 |
Family
ID=59596515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710318259.4A Pending CN107063803A (en) | 2017-05-08 | 2017-05-08 | The preparation method of neodymium iron boron metallographic |
Country Status (1)
| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111257092A (en) * | 2020-04-10 | 2020-06-09 | 昆明理工大学 | Fixing method for polished metal and mineral sheet samples |
| CN113514485A (en) * | 2021-06-24 | 2021-10-19 | 国合通用测试评价认证股份公司 | Preparation method of neodymium iron boron electron back scattering diffraction analysis sample |
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| CN205749078U (en) * | 2016-05-20 | 2016-11-30 | 哈尔滨理工大学 | A kind of grinding tool preparing thin slice metallographic specimen |
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|---|---|---|---|---|
| SU1032358A1 (en) * | 1982-01-05 | 1983-07-30 | Томский Электроламповый Завод | Device for attaching metallographic specimen |
| CN201464252U (en) * | 2009-08-10 | 2010-05-12 | 鞍钢股份有限公司 | Field metallographic sample preparation tool |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111257092A (en) * | 2020-04-10 | 2020-06-09 | 昆明理工大学 | Fixing method for polished metal and mineral sheet samples |
| CN113514485A (en) * | 2021-06-24 | 2021-10-19 | 国合通用测试评价认证股份公司 | Preparation method of neodymium iron boron electron back scattering diffraction analysis sample |
| CN113514485B (en) * | 2021-06-24 | 2023-12-01 | 国合通用测试评价认证股份公司 | Preparation method of NdFeB (neodymium iron boron) electron back scattering diffraction analysis sample |
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Application publication date: 20170818 |