利用冷烧结工艺制备致密细晶高频锰锌铁氧体

Preparation of Densified Fine-Grain High-Frequency MnZn Ferrite Using the Cold Sintering Process.

作者信息

Ying Yao, Hu Linghuo, Li Zhaocheng, Zheng Jingwu, Yu Jing, Li Wangchang, Qiao Liang, Cai Wei, Li Juan, Bao Daxin, Che Shenglei

机构信息

College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, China.

Research Center of Magnetic and Electronic Materials, Zhejiang University of Technology, Hangzhou 310014, China.

出版信息

Materials (Basel). 2023 Apr 28;16(9):3454. doi: 10.3390/ma16093454.

DOI:10.3390/ma16093454

PMID:37176334

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10180247/

Abstract

The densified MnZn ferrite ceramics were prepared using the cold sintering process under pressure, with an acetate ethanol solution used as the transient solvent. The effects of the transient solvent, the pressure and annealing temperature on the density, and the micromorphology and magnetic properties of the sintered MnZn ferrites were studied. The densified MnZn ferrite was obtained using the cold sintering process and its relative density reached up to 85.4%. The transient solvent and high pressure are essential to the cold sintering process for MnZn ferrite. The annealing treatment is indispensable in obtaining the sample with the higher density. The relative density was further increased to 97.2% for the sample annealed at 950 °C for 6 h. The increase in the annealing temperature reduces the power loss at high frequencies.

摘要

采用冷烧结加压工艺制备了致密化锰锌铁氧体陶瓷，以醋酸乙醇溶液作为瞬态溶剂。研究了瞬态溶剂、压力和退火温度对烧结锰锌铁氧体密度、微观形貌和磁性能的影响。通过冷烧结工艺获得了致密化锰锌铁氧体，其相对密度高达85.4%。瞬态溶剂和高压对锰锌铁氧体的冷烧结工艺至关重要。退火处理对于获得更高密度的样品是必不可少的。在950℃退火6h的样品，其相对密度进一步提高到97.2%。退火温度的升高降低了高频下的功率损耗。