摘要
采用单辊法制备宽为20 mm、厚为25μm的Fe78Si9B13合金带材,用XRD和DSC分析其非晶形成能力、晶化行为和热稳定性,并研究退火温度对其软磁性能的影响。结果表明:淬火态Fe78Si9B13合金带材为非晶态,一级起始晶化温度Tx1为517℃;二级起始晶化温度Tx2为530℃;当退火温度升高到450℃,开始部分晶化,微量析出bcc结构的α-Fe(Si)晶化相,磁化曲线呈一定的线性关系,即合金呈恒导磁特性。随着退火温度的升高,Fe78Si9B13合金带材的初始磁导率μi、饱和磁感应强度Bs和矫顽力Hc,呈先增大后减小的趋势。测试频率为50 Hz,随着退火温度的升高,磁导率μa呈先增大后减小的趋势,磁损耗Ps呈先减小后增大的趋势。
Fe78SigB13 alloys strips with 20 mm width and 25 μm thickness were manufactured by single-roller method. The glass forming ability, crystallization behavior and thermal stability of tile sample were analyzed by XRD and DSC, respectiwly. Tile effect of annealing temperature on soft magnetic properties was studied. The results show that as-quenched Fe78SigB13 strips are amorphous, and its first and second crystallization onset temperature （Txt and Tx2） are 517 ℃ and 530 ℃, respectively. When tile annealing temperature is increased to 450 ℃, the sample begins to appear part of crystallization, and separates out a small number of a-Fe （St） crystallization phases with bcc structure, and magnetizing curve shows a linear relationship, namely alloy presents constant permeability characteristics. With increasing annealing temperature, the initial permeability μ, saturation magnetic induction B and coercivity H, of the sample increase first and then decrease. When test frequency is 50 Hz, permeability,shows a trend of increasing first and then decreasing, however magnetic loss P presents a trend of decreasing first and then increasing with the increase of annealing temperature.
出处
《兵器材料科学与工程》
CAS
CSCD
北大核心
2015年第2期48-52,共5页
Ordnance Material Science and Engineering
基金
国家自然科学基金资助项目(11064005)
江西省教育厅科技资助项目(GJJ14553)
江西省原子与分子物理重点学科资助项目(2011-2015)
作者简介
蒋达国，男，硕士，教授；主要从事磁性材料与器件研究。E-mail：jgsxy_jdg@sohu.com。
