按所用磁性粉体的不同,磁带可分为金属粉与氧化物两大类。在制备金属磁性粉体的过程中,将还原后的纯金属铁粉置于氨氢混合物中,经过加热氮化以此来阻止其被氧化腐蚀。从工艺方面来说是一种使金属粉稳定化的措施。由于氮化后的铁粉本身具有与其他材料不同的磁性能——剩磁(Br)大于2000高斯(G),矫顽力(He)小于1000奥斯特(Oe),而且制备工艺较简单,性能又较稳定,故将要发展成一种独具特色的金属磁粉。目前除已研制出Fe_4N 粉外,尚在研制Fe_8N和Fe_(2-3)N 粉。Fe_xN 系中N 含量可以通过温 According to the different magnetic powder used, the tape can be divided into two categories of metal powder and oxide. In the process of preparing the metallic magnetic powder, the reduced pure metallic iron powder is placed in a mixture of ammonia and hydrogen, and then heated and nitrided to prevent it from being oxidized and corroded. From the technical point of view is a kind of metal powder stabilization measures. Since the nitrided iron powder itself has different magnetic properties than other materials - residual magnetism (Br) greater than 2000 Gauss (G), coercivity (He) less than 1000 Oe, and the preparation process is relatively simple , The performance is more stable, it will be developed into a unique metal magnetic powder. At present, except Fe_4N powder has been developed, Fe_8N and Fe_ (2-3) N powder are still being developed. Fe_xN Department N content can be through the warm