封装方式对铁基纳米晶磁芯磁性能的影响  

Effect of encapsulation method on magnetic properties of Fe-based nanocrystalline cores

作　　者：洪兴 郭亚男[2] 崔兴华 张伟[2] 李立军[1,2] 刘天成 HONG Xing;GUO Yanan;CUI Xinghua;ZHANG Wei;LI Lijun;LIU Tiancheng(China Iron and Steel Research Institute Group,Beijing 100081,China;Advanced Technology and Materials Co.,Ltd.,Beijing 100081,China)

机构地区：[1]中国钢研科技集团有限公司,北京100081 [2]安泰科技股份有限公司,北京100081

出　　处：《金属功能材料》2022年第5期69-72,共4页Metallic Functional Materials

基　　金：国家重点研发计划资助项目(2021YFB3800500)。

摘　　要：铁基非晶纳米晶合金具有优异的软磁性能,对非晶态的非晶纳米晶合金进行热处理可获得非晶相和晶相的双相结构,磁性能提高过程中,材料的脆性和磁晶各向异性也在增加,为减少碎屑产生和外部应力对热处理后合金磁性能的影响,实际使用时需要对其进行保护。常见减少应力敏感性的方法是调整合金成分和热处理工艺,鲜有对不同保护方式影响的报道。使用厚度为16~18μm的Fe_(73.5)Cu_(1)Nb_(3)Si_(15.5)B_(7)纳米晶合金带材,卷绕成30 mm×20 mm×10 mm的纳米晶环形磁芯,热处理后的磁芯进行不同方式封装,即采用不同的固化漆、粘结胶和点胶方式与塑料护盒进行保护,对比结果表明,封装过程中固化漆成分对磁芯在高低温状态下的性能影响非常明显,粘结硅胶成分和点胶方式对磁芯在高低温状态下的性能影响相对较小。实用中可以通过选择合适成分的固化漆减少磁芯的应力敏感性,提高磁芯产品的温度稳定性。Fe-based amorphous nanocrystalline alloy has excellent soft magnetic properties, the dual-phase structure of the amorphous phase and the crystal phase can be obtained through heat treatment process. In the process of magnetic properties of the material enhancement, the brittleness and magnetic crystal anisotropy of the material is also increasing. In order to reduce the impact of debris generation and external stress on the magnetic properties of the alloy after heat treatment, it is necessary to protect it when actually used. A common method of reducing stress sensitivity is to adjust the alloy composition and heat treatment process, but the impact on different protection methods has rarely been reported. In practice, the stress sensitivity of the core can be reduced by selecting the curing paint of the appropriate composition, and the temperature stability of the core product can be improved.

关 键 词：铁基纳米晶合金 环氧树脂 有机硅胶 磁性能 性能稳定性 

分 类 号：TB383.1[一般工业技术—材料科学与工程] TG132.271[金属学及工艺—合金]