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目前,金属粉尚未大量用于磁记录,其原因是金属粒子表面易氧化。关于金属粉粒子表面的抗氧化处理,文献有所报道,其处理方法主要分为两大类。气相法和液相法。气相法主要是用N_2+SO_2,N_2+O_2或H_2+NH_3等气体处理金属粉,使金属粉粒子表面形成氧化物保护膜或生成Fe_4N(也有文献将Fe_4N归为一类新型磁粉,即氮化铁磁粉)。据文献报道,含Ni0.5％、Mn0.5％、
At present, metal powder has not been used in a large amount for magnetic recording because the surface of metal particles is easily oxidized. On the metal powder particle surface anti-oxidation treatment, the literature has been reported, the treatment methods are mainly divided into two categories. Gas phase method and liquid phase method. The gas-phase method mainly treats the metal powder with N 2 + SO 2, N 2 + O 2 or H 2 + NH 3 gas to form an oxide protective film on the surface of the metal powder particles or generate Fe 4 N (the literature also classifies Fe 4 N as a new type of magnetic powder, Ferromagnetic powder). According to the literature, with Ni0.5%, Mn0.5%