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【 Help you solve the ndfeb magnet easily corrosive 】

by:Newland     2020-05-05
【 Help you solve the ndfeb magnet easily corrosive 】 Summary of strengths is cost-effective, good mechanical properties; Lack of Curie temperature in low point, temperature characteristic is poor, and is easy to be pulverization corrosion, must through the adjust its chemical composition and adopted treatment measures to improve the appearance, can achieve the requirement of practical use. Ferrite is a ferromagnetic metal oxide. In terms of electrical characteristics, the resistivity of ferrite magnetic data is much bigger than metals and alloys, and high dielectric function. Ferrite magnetic function but also has high magnetic permeability in high frequency. Therefore, ferrite has become a widely used high frequency weak current category of nonmetallic magnetic materials. Ndfeb belongs to the third generation of rare earth permanent magnet materials, has small volume, light weight and the characteristics of the magnetic strength, is now the best ratio of magnets, the magnetic field is known as the king of magnetic. High energy density of the strengths of nd-fe-b materials in modern industry and widely used in electronic technology. Under the conditions of bare magnetic, magnetic force can reach about 3500 gauss. Ndfeb magnet is very easy to corrode. For this reason, most finished products to the plating or coating. Practice to choose appearance treatment include: nickel plating ( Nickel and copper nickel) , galvanized, aluminum plating, electrophoresis, etc. If working in a closed environment, also can choose the method of phosphide. Ndfeb magnet is widely used now, agile development of magnet products. Ndfeb from invention to now widely used, but also more than 20 years of time. Because of its high magnetic function and easy workability, the price is not high, so using agile category extension. Now, the commercialization of ndfeb magnetic energy product can reach 50 mgoe, 10 times that of ferrite. Ndfeb is powder metallurgy products, processing methods and samarium cobalt is similar. Now, summary of the highest working temperature at 180 degrees Celsius. If be bad environment use, generally recommend not surpass 140 degrees Celsius. Strong magnets, magnets, magnet, magnet, ndfeb magnet, rare earth permanent magnets
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