Your partner for magnetic solution & high quality magnet

magnetic products

The most complete magnetic materials industry development research

by:Newland     2020-05-03
Magnetic material is old and very versatile functional materials, material of magnetic as early as 3000 years ago by people understanding and the application, for example in ancient China with natural magnet as a compass. Widely exists in the nature of the magnetite is natural magnets, the molecular structure is Fe3O4. Since modern times, with the development of industry and technology, a large number of new magnetic materials were found, according to the main application is roughly divided into three generation: the first generation of aluminum nickel and cobalt, AlNiCo) , the second generation of ferrite, the third generation of rare earth permanent magnet. Of rare earth permanent magnet, and is divided into three stages: the first stage SmCo5, the second phase Sm2Co17, Nd2Fe14B third stage. The following is a brief history of development of magnetic materials: chart: magnetic material industry development time event 1st century BC. Sima qian shiji describe yellow emperor operations using a compass in the song dynasty in 1086 shen kua 'MengXi stature for' manufacturing method of the compass, etc. In 1119, song dynasty zhu or 'ping chau to talk about' a compass is used to record navigation British William in 1600. Gibert, the earliest book DeMagNete magnet 'Danish oster 1820 ( H。 C。 奥斯特) First found that the current can produce magnetic field in 1822 the French lu he invented electromagnet, among the current through the winding can make the iron magnetization in France in 1826 ampere found Mr Abe's law, namely the corkscrew rule 1831 Faraday electromagnetic induction phenomenon, argument reveals the relationship between the electromagnetic in France in 1832 A. H。 Gerard pique west invented natural magnet made of permanent magnet rotating alternator in the 19th century to the 20th century Europe new kinds of dc and ac motor/generator inundated with Japan in 1931 T. Mishima invented the aluminum nickel and cobalt AlNiCo magnets in 1933 Japan Kato and Takei found containing Co ferrite Fe2o31935 Dutch SNoek inventions in soft magnetic ferrite Mader and 1965 Nowick CoP ferromagnetic amorphous alloy was prepared in 1967 American StrNat found 1:5 SmCo, marks a rare earth permanent magnet ( The third generation of magnetic materials) Era in Japan in 1977 Ojima found 2:17 SmCo, and contain small amounts of Cu, Japanese Sagawa found Nd2Fe14B Zr1983 years, ndfeb magnetic king 1983 so-called contemporary American general motors, with the Japanese discovered after ndfeb, each have a patent in 1984 domestic iron and steel research institute developed over 35 mgoe of ndfeb magnetic energy product with domestic enterprises to buy Japan's sumitomo ndfeb 1992 patent ndfeb annual output reached 8000 tons, in 2002 China overtook Japan to become the world's first 2008 China ndfeb manufacturers has reached more than 100, the annual output reached 46000 tons ndfeb since 2008 since the birth of laboratory for more than 30 years, due to limited by rare earth is expensive, especially the dysprosium terbium heavy rare earth lack of influence, countries around the world are scrambling to develop a new generation of magnetic materials, such as iron nitrogen permanent magnet, samarium nanocomposite rare earth permanent magnet, but the effect is not ideal, ndfeb in visible within a decade or two years, is still unshakable status
Custom message
Chat Online 编辑模式下无法使用
Chat Online inputting...