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前言目前,作为磁记录介质材料广泛使用的磁粉,仍然是以堪姆斯(Camras)为代表制法的r-Fe_2O_3磁性粉末。它是采用针状α-Fe○○H粒子为原始材料,用氢气等还原气体在300—400℃加热还原成
Foreword Currently, the magnetic powder widely used as a magnetic recording medium material is still the r-Fe 2 O 3 magnetic powder represented by Camras. It is the use of acicular α-Fe ○○ H particles as the raw material, with a reducing gas such as hydrogen at 300-400 ℃ heating reduced to