制备过程中FeSiB非晶带材自由面氧化对磁性能的影响  

Effect of free-surface oxidation on magnetic properties of FeSiB amorphous ribbon during casting

作　　者：李百松[1] 李志刚[1] 宋恩猛[1] LI Baisong;LI Zhigang;SONG Enmeng(Advanced Technology and Materials Co.,Ltd.,China Iron and Steel Research Institute Group,Beijing 100081,China)

机构地区：[1]中国钢研科技集团有限公司安泰科技股份有限公司,北京100081

出　　处：《钢铁研究学报》2021年第9期960-965,共6页Journal of Iron and Steel Research

基　　金：国家自然科学基金资助项目(51774098)。

摘　　要：利用X射线衍射(XRD)及X射线光电子谱(XPS)对采用平面流铸法制备的Fe_(78)Si_(9)B_(13)非晶带材进行了分析,研究结果表明:当只有熔潭前端被CO保护时,所制备出的Fe_(78)Si_(9)B_(13)非晶带材自由面会出现厚约10 nm的Fe_(2)O_(3)氧化层;经XRD分析,Fe_(2)O_(3)氧化层的产生会使得带材自由面在2θ为66.1°处出现Fe(Si)固溶体晶化相,从而恶化带材磁性能。在非晶带材的制备过程中,采用CO气体对熔潭前端与后端同时进行保护,可有效避免非晶带材自由面的氧化,改善带材磁性能。X-ray diffraction(XRD) and X-ray photoelectron spectroscopy(XPS) were taken to analyze the Fe_(78)Si_(9)B_(13) amorphous ribbon, which is made by planar flow casting method. The results show that the Fe_(2)O_(3) oxide layer with thickness of about 10 nm will be generated in the free-surface of Fe_(78)Si_(9)B_(13) amorphous ribbon when the up-stream meniscus of liquid puddle is protected by CO. Meanwhile, Fe(Si) solid solution crystalline phase occurs at 2θ of 66.1° in the free-surface ascribing the existence of the above Fe_(2)O_(3) oxide layer, leading to the deterioration of magnetic properties. By protecting the liquid puddle in both up-stream and down-stream meniscus in the casting process, the free-surface oxidation can be effectively prevented, which will improve the magnetic properties.

关 键 词：FeSiB非晶带材 熔潭保护 磁性能 X射线光电子谱 

分 类 号：TG139[一般工业技术—材料科学与工程]