论文部分内容阅读
磁带是在带基上涂敷强磁性金属粉末制成的。录放音音质的好坏在一定程度上取决于金属磁粉的性能。以前,使用的磁性材料是磁性氧化铁,其中,γ-Fe_2O_3的输出大,信噪比高,高频特性好,所以广泛用来制作普通音乐磁带。如果磁粉颗粒太大,表面加工不细,特性就会变坏。所以,制作磁带时,都采用超微粒磁粉,并把表面加工成镜面,使磁带特性良好。精细加工的γ-Fe_2O_3磁带在盘式录音机中已作为高性能磁带广泛应用。还有一种铬
The tape is made by applying ferromagnetic metal powder on the tape base. The quality of sound recording and playback depends to a certain extent on the performance of metal magnetic powder. Previously, the magnetic material used was magnetic iron oxide. Among them, γ-Fe 2 O 3 has large output, high signal-to-noise ratio and good high-frequency characteristics, so it is widely used for making ordinary music tapes. If the magnetic particles are too large, surface processing is not fine, the characteristics will deteriorate. Therefore, the production of tape, the use of ultrafine particles of magnetic powder, and the surface processed into a mirror, the tape characteristics of good. Finely processed γ-Fe_2O_3 tapes have been widely used as high-performance magnetic tapes in disc recorders. There is also a kind of chromium