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首页> 外文期刊>Journal of magnetism and magnetic materials >Heat generation ability in AC magnetic field and their computer simulation for Ti tube filled with ferrite powder
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Heat generation ability in AC magnetic field and their computer simulation for Ti tube filled with ferrite powder

机译:铁氧体粉末填充钛管在交流磁场中的发热能力及其计算机模拟

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摘要

The heat generation ability of needle-type materials was studied for the application of thermal coagulation therapy in an AC magnetic field. Although the Ti tube without the MgFe_2O_4 powder or Ti rod showed poor heat generation abilities in an AC magnetic field, the temperature was significantly increased by the presence of ferrite powder in the Ti tube. We confirmed using a computer simulation that the eddy loss of the Ti tube was increased by the enhanced magnetic flux density due to the ferrite powder in the Ti tube. The heat generation of the ferrite filled Ti tube was increased by utilization of the quenched MgFe_2O_4 powder from elevated temperature. The relative magnetic permeability of the quenched ferrite was enhanced with the decrease in the inverse ratio of the cubic spinel structure. The heat generation ability was increased with the increase in the relative magnetic permeability of the Ti tube with ferrite powder. The calculated joule loss based on the experimental results showed an agreement with those using the computer simulation.
机译:研究了针状材料在交流磁场中热凝治疗中的发热能力。尽管没有MgFe_2O_4粉末或Ti棒的Ti管在交流磁场中显示出较差的发热能力,但由于Ti管中存在铁素体粉末,温度显着升高。我们通过计算机仿真证实,由于Ti管中的铁素体粉末,磁通密度的提高使Ti管的涡流损失增加。通过利用来自高温的淬火MgFe_2O_4粉末,可增加填充铁氧体的Ti管的发热。随着立方尖晶石结构的反比的减小,淬火的铁氧体的相对磁导率增加。伴随着铁素体粉末的Ti管的相对磁导率的增加,发热能力提高。根据实验结果计算出的焦耳损耗与使用计算机仿真的结果一致。

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