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The invention provides a NFC ferrite magnetic shielding material, wherein the main crystalline phase of the NFC ferrite magnetic shielding material is of a spinel structure, the molecular structural expression of the NFC ferrite magnetic shielding material is Ni0.28-xZn0.52Cu0.15Co0.05+xFe2.02O4, x is greater than or equal to 0 and less than or equal to 0.05, the number of the doping agents is four, the doping agents are respectively Bi2O3, a Ba2Co2Fe12O22 ferrite pre-sintering material, SnO2 and Nb2O5, the doping amount of Bi2O3 is 0.2-0.3 wt%, the doping amount of the Ba2Co2Fe12O22 ferrite pre-sintering material is 1-2 wt%, the doping amount of SnO2 is 0.1-0.3 wt%, and the doping amount of Nb2O5 is 0.25-0.5 wt%. The material is composed of spinel NiCuZn ferrite as a main crystalline phase, and can well meet the comprehensive requirements of high magnetic conductivity and high quality factor at a working frequency point 13.56 MHz of NFC equipment.
本发明提供了一种NFC铁氧体磁屏蔽材料，其主晶相为尖晶石结构，分子结构表达式为NiZnCuCoFeO，其中0≤x≤0.05；掺杂剂有4种，分别为BiO、BaCoFeO铁氧体预烧料、SnO和NbO，其中BiO掺杂量为0.2～0.3wt％；BaCoFeO铁氧体预烧料掺杂量为1～2wt％；SnO掺杂量为0.1wt％～0.3wt％；NbO掺杂量为0.25～0.5wt％。该材料以尖晶石NiCuZn铁氧体为主晶相组成的，能够在NFC设备工作频点13.56MHz很好兼顾高磁导率和高品质因数综合要求。
The invention provides a NFC ferrite magnetic shielding material, wherein the main crystalline phase of the NFC ferrite magnetic shielding material is of a spinel structure, the molecular structural expression of the NFC ferrite magnetic shielding material is Ni0.28-xZn0.52Cu0.15Co0.05+xFe2.02O4, x is greater than or equal to 0 and less than or equal to 0.05, the number of the doping agents is four, the doping agents are respectively Bi2O3, a Ba2Co2Fe12O22 ferrite pre-sintering material, SnO2 and Nb2O5, the doping amount of Bi2O3 is 0.2-0.3 wt%, the doping amount of the Ba2Co2Fe12O22 ferrite pre-sintering material is 1-2 wt%, the doping amount of SnO2 is 0.1-0.3 wt%, and the doping amount of Nb2O5 is 0.25-0.5 wt%. The material is composed of spinel NiCuZn ferrite as a main crystalline phase, and can well meet the comprehensive requirements of high magnetic conductivity and high quality factor at a working frequency point 13.56 MHz of NFC equipment.
本发明提供了一种NFC铁氧体磁屏蔽材料，其主晶相为尖晶石结构，分子结构表达式为NiZnCuCoFeO，其中0≤x≤0.05；掺杂剂有4种，分别为BiO、BaCoFeO铁氧体预烧料、SnO和NbO，其中BiO掺杂量为0.2～0.3wt％；BaCoFeO铁氧体预烧料掺杂量为1～2wt％；SnO掺杂量为0.1wt％～0.3wt％；NbO掺杂量为0.25～0.5wt％。该材料以尖晶石NiCuZn铁氧体为主晶相组成的，能够在NFC设备工作频点13.56MHz很好兼顾高磁导率和高品质因数综合要求。
NFC ferrite magnetic shielding material and preparation method thereof
一种NFC铁氧体磁屏蔽材料及其制备方法
XIAO MING (author)
2020-06-26
Patent
Electronic Resource
Chinese
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