CN212404279U - Diamond with surface magnetic coating - Google Patents
Diamond with surface magnetic coating Download PDFInfo
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- CN212404279U CN212404279U CN202021127488.1U CN202021127488U CN212404279U CN 212404279 U CN212404279 U CN 212404279U CN 202021127488 U CN202021127488 U CN 202021127488U CN 212404279 U CN212404279 U CN 212404279U
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- diamond
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Abstract
The invention belongs to the technical field of diamond surface treatment, and relates to a diamond with a surface magnetic coating; a method for coating diamond surface includes such steps as pretreating diamond by putting it in spark discharge chamber, using steel wire as discharge electrode to spark the diamond surface to form metal particles and pits, and coating film on diamond. The diamond with the surface magnetic coating comprises a diamond body, wherein the diamond body is provided with an outer surface, the outer surface is provided with a coated magnetic coating, punctiform iron particles are distributed on the outer surface, and the magnetic coating is also coated with the iron particles; the plating method has the advantages that the formed magnetic plating layer on the surface of the diamond is more stable and has stronger magnetism; the diamond has the advantages of more stable surface magnetic coating and stronger magnetism.
Description
Technical Field
The invention belongs to the technical field of diamond surface treatment, and particularly relates to a diamond with a surface magnetic coating and a coating method thereof.
Background
In the publication No. CN106894075B and patent No. 201710176265.0, a diamond surface magnetic coating and a coating method thereof are disclosed, wherein the coating method of the diamond surface magnetic coating comprises the following steps: firstly, depositing a nano rare earth material and a nickel-phosphorus alloy on the surface of a diamond together by adopting a chemical nickel plating mode to form a nano rare earth-nickel-phosphorus alloy composite magnetic coating; and secondly, coating a nickel-phosphorus alloy on the nano rare earth-nickel-phosphorus alloy composite magnetic coating by adopting a chemical nickel plating mode to form the nickel-phosphorus alloy protective coating. The diamond particles prepared by the method have high magnetism and corrosion resistance. The coating is applied to the production process of the electroplated diamond wire, and has excellent sanding property and long service life.
The diamond used in the method is not treated before chemical nickel plating, the obtained diamond surface magnetic coating still has an unstable phenomenon, and the magnetism cannot meet higher requirements.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a diamond with a surface magnetic coating and a coating method thereof.
The technical scheme of the diamond surface plating method is realized as follows: a diamond surface coating method comprises the following steps:
the method comprises the step of pretreating the diamond, wherein the step of pretreating is to place the diamond in an electric spark discharge chamber, a discharge electrode is a steel wire, so that metal particles and pits are formed on the surface of the diamond through electric sparks, the process is an electric spark process, and then the diamond is coated with a film.
The diamond film plating includes: firstly, depositing a nano rare earth material and a nickel-phosphorus alloy on the surface of a diamond together by adopting a chemical nickel plating mode to form a nano rare earth-nickel-phosphorus alloy composite magnetic coating; and step two, coating the nickel-phosphorus alloy on the nano rare earth-nickel-phosphorus alloy composite magnetic coating by adopting a chemical nickel plating mode to form the nickel-phosphorus alloy protective coating, wherein the processes are coating processes.
Preferably, the step of pretreating the diamond further comprises the step of coating a layer of ferric sulfate on the surface of the diamond, wherein the step is a process of coating a ferric sulfate layer.
Preferably, the method further comprises a diamond cleaning process after the electric spark process and before the plating process.
Preferably, the washing process is carried out by washing with acid having pH =2-3 and soaking for 3-5 hours.
The technical scheme of the diamond with the surface magnetic coating is realized as follows: the diamond with the surface magnetic coating comprises a diamond body, wherein the diamond body is provided with an outer surface, and the outer surface is provided with a coated magnetic coating, and the diamond is characterized in that: the outer surface is distributed with point-shaped iron particles, and the magnetic coating is also coated with the iron particles.
Furthermore, the outer surface of the diamond body is also provided with a pit, and the magnetic coating coats the pit.
Furthermore, the magnetic coating coats the iron particles and the outside of the pits is smooth.
The invention has the beneficial effects that: the plating method has the advantages that the formed magnetic plating layer on the surface of the diamond is more stable and has stronger magnetism; the diamond has the advantages of more stable surface magnetic coating and stronger magnetism.
Drawings
Fig. 1 is a schematic view of the structure of a diamond of the present invention.
Wherein: 1. diamond body 2, magnetic coating 3, iron granule 4, pit.
Detailed Description
The invention is further described with reference to the following figures and examples.
Example 1
Diamond with a nickel phosphorous alloy protective coating was made according to the method of publication No. CN106894075B and patent No. 201710176265.0, namely: firstly, depositing a nano rare earth material and a nickel-phosphorus alloy on the surface of a diamond together by adopting a chemical nickel plating mode to form a nano rare earth-nickel-phosphorus alloy composite magnetic coating; step two, coating the nickel-phosphorus alloy on the nanometer rare earth-nickel-phosphorus alloy composite magnetic coating to form the nickel-phosphorus alloy protective coating by adopting a chemical nickel plating mode, wherein the method does not perform any treatment on the diamond before coating to obtain a first diamond,
example 2
First, the diamond is placed in a spark discharge chamber, the discharge electrode is a steel wire, the diamond surface is spark-formed with metal particles and pits, the process is a spark process, and then the diamond is subjected to film coating, which is the method of the above example, to obtain a second diamond.
Example 3
On the basis of the embodiment 2, the diamond surface is coated with a layer of ferric sulfate before the diamond pretreatment step, and the process is a process of coating a ferric sulfate layer to obtain a third diamond.
The following table shows the magnetic properties of the three diamonds
The following results were obtained using the three diamonds described above:
the protective coating of diamond is more stable, is favorable to the diamond bonding on the abrasive disc, forms a whole, and the diamond is difficult for droing in the use, is favorable to increasing the life of diamond, and under the inconvenient condition of other conditions, the extension of abrasive disc life proves that diamond nickel phosphorus alloy protective coating is more firm.
Practice proves that the surface of the diamond is cleaned after the electric spark process and before the plating process, so that the surface of the diamond can be cleaner before the nickel-phosphorus alloy protective plating layer is formed on the diamond, pollution is reduced, the formation of the nickel-phosphorus alloy protective plating layer is facilitated, the formed diamond is more durable in use and stronger in magnetism, and certain use requirements can be met; the cleaning process is to clean the diamond surface by acid with pH =2-3 and soak for 3-5 hours, which is more favorable for acid cleaning of the diamond surface.
As shown in fig. 1, the diamond with surface magnetic coating comprises a diamond body 1, the diamond body has an outer surface, and the outer surface is provided with a coated magnetic coating 2, and the diamond is characterized in that: the outer surface is distributed with punctiform iron particles 3, and the magnetic coating is also coated with the iron particles.
Furthermore, the outer surface of the diamond body is also provided with a pit 4, and the magnetic coating coats the pit.
Furthermore, the magnetic coating coats the iron particles and the outside of the pits is smooth.
The above description is only an embodiment of the present invention, but the structural features of the present invention are not limited thereto, and any changes or modifications within the field of the present invention by those skilled in the art are covered within the scope of the present invention.
Claims (3)
1. The diamond with the surface magnetic coating comprises a diamond body, wherein the diamond body is provided with an outer surface, and the outer surface is provided with a coated magnetic coating, and the diamond is characterized in that: the outer surface is distributed with point-shaped iron particles, and the magnetic coating is also coated with the iron particles.
2. The diamond with surface magnetic coating according to claim 1, wherein: the outer surface of the diamond body is also provided with a pit, and the magnetic coating coats the pit.
3. The diamond with surface magnetic coating according to claim 2, wherein: the magnetic coating coats the iron particles and the outside of the pits is smooth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021127488.1U CN212404279U (en) | 2020-06-18 | 2020-06-18 | Diamond with surface magnetic coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021127488.1U CN212404279U (en) | 2020-06-18 | 2020-06-18 | Diamond with surface magnetic coating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212404279U true CN212404279U (en) | 2021-01-26 |
Family
ID=74407585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021127488.1U Expired - Fee Related CN212404279U (en) | 2020-06-18 | 2020-06-18 | Diamond with surface magnetic coating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212404279U (en) |
-
2020
- 2020-06-18 CN CN202021127488.1U patent/CN212404279U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210126 Termination date: 20210618 |
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| CF01 | Termination of patent right due to non-payment of annual fee |