Fe-B-Si共晶合金的微观净化及净化机制  

Micro-purification process and purification mechanism of eutectic Fe-B-Si alloys

作　　者：张振忠[1] 陈光[1] 杨根仓[2] 崔鹏 

机构地区：[1]南京理工大学材料系,江苏南京210094 [2]西北工业大学凝固技术国家重点实验室,陕西西安710072 [3]西安市机床工具工业公司,陕西西安710001

出　　处：《材料科学与工艺》2001年第2期169-174,共6页Materials Science and Technology

基　　金：国家自然科学基金资助项目 !(5 970 10 0 3 ) ;国家重点基础研究发展规化资助项目 !(G2 0 0 0 0 672 0 2 )

摘　　要：采用熔融玻璃与循环过热相结合的净化方法 ,系统研究了Fe -B -Si共晶合金的净化规律及其净化机制 ,提出了该合金大体积液态金属获得深过冷的优化工艺 .采用该工艺可快速、稳定地使 6～ 70gFe82 B17Si1、Fe80 .5B15.5Si4 、Fe76B12 Si12 、Fe76B12 Si10 C2 合金分别获得 34 3K、35 8K、36 7K和 412K大过冷度 ,并首次成功地制备了Fe76B12 Si12 及Fe76B12 Si10 C2 合金的块状纳米软磁材料 .研究结果表明 ,净化玻璃的化学成分。By using glass fluxing incorporated with cyclical superheating purification method, the purification effect and micro purification mechanism of bulk liquid Fe-B-Si eutectic alloys were investigated. An optimum processing was introduced to possess notably the purification effect of cyclical superheating and glass fluxing on undercooling. By applying this technique, the maximum respective undercoolings up to 343 K in Fe 82 B 17 Si 1、 358 K in Fe 80.5 B 15.5 Si 4、367 K in Fe 76 Si 12 B 12 and 412 K in Fe 76 B 12 Si 10 C 2 alloys can be obtained and kept from attenuation for 4～6 cycles. Fe 76 B 12 Si 12 and Fe 76 B 12 Si 10 C 2 bulk nanocrystalline magnetic alloys were first prepared with the technique. It was found that the chemical composition of glass, superheating temperature and the degasification in alloys and glass affect primarily the degree of undercooling of bulk liquid alloys.

关 键 词：铁硼硅共晶合金 块状纳米软磁材料 循环过热 熔融玻璃 净化 循环过热 深过冷 

分 类 号：TM271.2[一般工业技术—材料科学与工程] TG113.1[电气工程—电工理论与新技术]