非晶质铁基合金及其充磁退火方法;AMORPHOUS FE-BASED ALLOY AND MAGNETIC ANNEALING METHOD THEREOF

摘要

一种非晶质铁基合金及其充磁退火方法。提供非晶质铁基合金胚，其中非晶质铁基合金胚包含78重量百分比至82重量百分比之铁、2重量百分比至9重量百分比之矽、10重量百分比至17重量百分比之硼、大于0重量百分比至1重量百分比之碳以及其他不可避免之杂质。进行充磁退火步骤，其中充磁退火步骤持续0.5小时至2小时，且充磁退火步骤包含利用充磁电流为800安培至1600安培以及加热温度为300℃至350℃，以形成非晶质铁基合金。 An amorphous Fe-based alloy and a magnetic annealing method thereof are described. An amorphous Fe-based alloy billet is provided, in which the billet includes iron in a range from 78wt% to 82wt%, silicon in a range from 2wt% to 9wt%, boron in a range from 10wt% to 17wt%, carbon in a range from greater than 0wt% to 1wt% and unavoidable impurities. A magnetic annealing step is performed to form the amorphous Fe-based alloy, in which the magnetic annealing step lasts 0.5 hour to 2 hours and includes using a magnetizing current ranged from 800A to 1600A and a heating temperature ranged from 300℃