Sinter NdFeB Magnet with high quality and low price
- Ref Price:
-
- Loading Port:
- Guangzhou
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 100 pc
- Supply Capability:
- 10000000 pc/month
OKorder Service Pledge
OKorder Financial Service
You Might Also Like
Specification
Rare earth Neodymium magnets (NdFeB) have been available for industrial application since 1984. Neo magnets have extremely high magnetic energy and therefore are used in applications which require high powered magnets, as well as applications where size and weight reduction are of interest or need to be considered. These qualities have made NdFeb magnets preferable over the commonly used larger and less powerful Ferrite magnets.
The main raw materials NdFeB permanent magnets are rare earth metal-Neodymium (Nd) 32%,metal element Iron (Fe) 64% and nonmetal element Boron(B) 1% , and some small amount added Dysprosium (Dy), Terbium(Tb), Cobalt (Co), Niobium(Nb),Gallium (Ga),Aluminum (Al),Copper (Cu) and other elements. Ternary system neodymium permanent materials are of Nd2Fe14B compound as a matrix, its compositions should be similar with the molecular formula of compound Nd2Fe14B, but, when it is proportioning according to the composition of Nd2Fe14B compound, the magnet performances are very low, and even without magnetic, just on the actual magnets, when the content of neodymium and boron are more than on Nd2Fe14B compound, we can get the better permanent magnet performances.
Neodymium magnets can be divided into three main groups:
1.Regular Neodymium
2.High corrosion resistant Neodymium
3.Bonded Neodymium (Isotropic): Manufactured by the injection of plastic material and Neodymium into a mold. This production method yields a very precise magnet which does not require further grinding and does not suffer substantial current loss.
Neo magnets are known for their high temperature resistance, making them durable and functional in temperatures exceeding 200°C. This quality makes them ideal for heavy industry applications. Sintered Neodymium, however, is sensitive to oxidization and can develop corrosion, so magnets are usually coated with Nickel+Copper+Nickel,Nickel+Sn, Zn(galvanization), Epoxy and Passivation for their protection.
Characteristics of Surface Treatment
Coating Performance
| Zn | Colour Zn Cr3+ | NiSn | NiCuNi | Epoxy | Passivation |
Colour | White | Multicolor | Silver | Silver | Black | Silver |
Thickness(μm) | 6-15 | 6-15 | 10-30 | 10-30 | 10-30 | 1-5 |
Pressure Cooker Test (120℃,2atm,100%RH) | >8hr | >8hr | >24hr | >24hr | >24hr | |
Salt Spray Test (35℃,5%NaCl,1.2atm) | >24hr | >72hr | >48hr | >48hr | >96hr |
- Q: is there a temperature when the structure of an alloy changes so that it displays magnetic properties or can become made made a magnet easier?
- You burned out the clutches. Rebuild time. If you play you have to pay.
- Q: Why do most ferromagnetic materials have no overall magnetic field? Explain in terms of magnetic domains.
- If the domains are not organized, ie, pointing in random directions, they cancel each other out and there is no net magnetic field.
- Q: Induction constant - the energy conversion gained from moving a magnetically charged object on a conductor type material like copper, silver, gold. I guess for every material has to be different. I searched around the net with no luck so I hope someone here might know what I‘m trying to explain.A percent (%) of energy gained or lost in the process. / Difference between the energy needed to run the process of electromagnetic induction and the energy gained from it.
- To add to anonymous answer, the eddy currents are a function of the SHAPE of the material as well as the material itself. So in a transformer the core is made of laminations of thin material to minimize those currents. Ferrite uses powdered magnetic material to keep each piece small and reduce the eddy currents that way. So in effect there is no constant that can be applied. The only thing you should be aware of is that the better the conductor the more that energy can be lost in these effects. The second effect is called hysteresis. It takes energy to create a field in a magnetic material. When you reduce that field again you don't get all the energy back. Some has been lost to friction in the material and is turned to heat. Again the losses are dependent on factors such as the frequency of operation. Not a simple constant.
- Q: list down the advantages of ferrous-magnetic material in transformer application ?
- Probably neither - your engine has seized.
- Q: What is the relationship between rare earth and magnetic material?
- Rare earth permanent magnet is an alloy composed of samarium and neodymium mixed rare earth metal and transition metal (such as cobalt, iron, etc.). It is pressed and sintered by powder metallurgy method and magnetized by magnetic field to produce a kind of magnetic material.
- Q: The magnetic material that is often used as a permanent magnet is
- The first is: alloy permanent magnetic materials, including rare earth permanent magnet materials (NdFeB, SmCo, Nd2Fe14B) (SmCo), aluminum nickel cobalt (AlNiCo)
- Q: How is magnetism produced by a magnet?
- It can be thought of as the object, the magnet is a tiny part of the internal circuit for some reason (such as iron long nonmagnetic in constant magnetic field) have been arranged, the intensity of the magnetic field in one direction than other directions, so exhibit magnetic.
- Q: Another user has stated this in his answer and I was curious what everyone though? I do not believe that any wire insulator will block magnetic fileds, its just distance dependent right? (apart fom counteracting it with other magnetic fileds perhaps)
- Sure, you can block it? What did you mean by blocking other than a shield? By insulation, you didn't mean like highly resistive, right? Cause that definitely won't do that trick. You need something metallic. A superconductor will pretty much kill the entire B-field in no distance at all.
- Q: What is the significance of measuring the hysteresis loop of ferromagnetic materials?
- The static parameters are also important for ferromagnetic materials, as well as initial permeability, UI, and maximum permeability um.
Send your message to us
Sinter NdFeB Magnet with high quality and low price
- Ref Price:
-
- Loading Port:
- Guangzhou
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 100 pc
- Supply Capability:
- 10000000 pc/month
OKorder Service Pledge
OKorder Financial Service
Similar products
Hot products
Hot Searches
