SBNK玻璃掺杂对NiCuZn铁氧体材料稳定性的影响  

Effect of SBNK glass dopant on the stability of NiCuZn ferrite material

作　　者：朱晏军 聂敏 ZHU Yan-jun;NIE Min(Shenzhen Shunluo Electronics Co,Ltd,Guangdong 518110,China)

机构地区：[1]深圳顺络电子股份有限公司,广东深圳518110

出　　处：《磁性材料及器件》2021年第4期60-64,共5页Journal of Magnetic Materials and Devices

摘　　要：采用传统的固相反应法制备NiCuZn铁氧体材料,通过添加不同含量的SiO_(2)-B2O_(3)-Na2CO_(3)-K_(2)CO_(3)(SBNK)玻璃体系以及2.5 wt%的Bi2O_(3)和0.2 wt%的Co2O_(3),研究了SBNK掺杂量对材料烧结密度、微观结构以及电磁性能的影响。研究表明,合适的掺杂量可减少材料气孔率和细化晶粒尺寸,同时磁导率有所降低,但是焊接和高温稳定性均有显著提高。结果表明,掺杂量为0.5 wt%的样品在10 kHz~1 MHz频率区间,起始磁导率μi为100;焊接后电感变化率ΔL/L_(0)为0.85%;高温负载实验后电感变化率ΔL/L_(0(24 h))为–0.81%,ΔL/L_(0(48 h))为–3.49%,ΔL/L_(0(72 h))为–3.74%。未掺杂材料起始磁导率μi为115;焊接后电感变化率ΔL/L_(0)为4.30%;高温负载实验后电感变化率ΔL/L_(0(24 h))为–2.94%,ΔL/L_(0(48 h))为–2.77%,ΔL/L_(0(72 h))为–11.21%。材料微观结构致密、晶粒细小均匀。NiCuZn ferrite material was prepared by traditional solid-state reaction method with doping different contents of SiO_(2)-B2O_(3)-Na2CO_(3)-K_(2)CO_(3)(SBNK)glass system and 2.5 wt%Bi2O_(3),0.2wt%Co2O_(3),and the effect of SBNK dopant on the sintering density,microstructure and electromagnetic properties investgated.The results show that appropriate doping amount can decrease porosity,grain size and permeability of the material,but the welding and high temperature stability are significantly improved.The experimental results of the stability of the samples with 0.5 wt%dopant content show that the initial permeability is 100 in the frequency range of 10 kHz to 1 MHz,the inductance change rateΔL/L_(0) is 0.85%after welding;after high temperature load,the inductance change rateΔL/L_(0(24 h))is–0.81%,ΔL/L_(0(48 h))is–3.49%andΔL/L_(0(72 h))%is–3.74%.The initial permeability of undoped material is 118;the change rate of inductanceΔL/L_(0) is 4.30%after welding;after high temperature load,the change rate of inductanceΔL/L_(0(24 h))is–2.94%,ΔL/L_(0(48 h))%is–2.77%andΔL/L_(0(72 h))%is–11.21%.The sample features compact microstructure and fine and uniform grains.

关 键 词：NICUZN铁氧体材料 焊接 高温负载 电感量变化率 

分 类 号：TM277.1[一般工业技术—材料科学与工程]