氯化胆碱-乙二醇-水媒介制备M型钡铁氧体及其相对结晶纯度研究  

Preparation of M-type Barium Ferrite Using Choline Chloride-ethylene glycolwater as a Medium and Study of Its Relative Crystal Purity

作　　者：于巧吉 任本景 孙钰琦 许清馨 王晓仪 于爽 孟锦宏[1] YU Qiaoji;REN Benjing;SUN Yuqi;XU Qingxin;WANG Xiaoyi;YU Shuang;MENG Jinhong(Shenyang Ligong University,Shenyang 110159,China)

机构地区：[1]沈阳理工大学环境与化学工程学院,沈阳110159

出　　处：《沈阳理工大学学报》2025年第1期51-58,共8页Journal of Shenyang Ligong University

基　　金：国家级大学生创新创业训练计划项目(202310144014)。

摘　　要：采用氯化胆碱-乙二醇(CC-EG)部分取代水溶剂,以相对结晶纯度(RCP)为实验指标,依据7因素12水平均匀设计方案,经化学共沉淀方法制备得到高结晶度、高纯度的M型钡铁氧体(BaFe_(12)O_(19))。通过对制备样品的XRD谱进行分峰拟合,计算各样品的RCP;经二次多项式逐步回归分析,建立RCP与主要合成因素(Fe/Ba摩尔比、CC-EG含量、pH、静置时间、预烧温度、焙烧温度、焙烧时间)间的回归模型;依据回归分析结果,探究模型中各项、各因素及因素间相互作用对RCP影响的主次顺序,揭示了将CC-EG引入BaFe_(12)O_(19)合成过程以提高其RCP的可行性。最优水平组合分析及验证实验结果进一步表明:以CC-EG部分取代水溶剂可提高BaFe_(12)O_(19)的结晶有序程度并降低其微观应变,因而可明显提高其RCP;XRD、SEM和VSM分析结果表明,RCP的提高明显有助于BaFe_(12)O_(19)片状颗粒径向尺寸和饱和磁化强度的提高;以氯化胆碱-乙二醇-水为媒介可制备性能优良的BaFe_(12)O_(19)。Using choline chloride-ethylene glycol(CC-EG)to partially replace the water solvent,taking relative crystal purity(RCP)as the experimental index,and according to the 7-factor 12-level uniform design scheme,high crystallinity and purity M-type barium ferrite(BaFe_(12)O_(19))was prepared by chemical co-precipitation method.The RCP of each sample was calculated by performing peak fitting on the XRD spectrum of the prepared sample,and then a regression model was established between RCP and the main synthesis factors(Fe/Ba molar ratio,CC-EG content,pH value,resting time,pre-calcination temperature,calcination temperature,calcination time)through quadratic polynomial stepwise regression analysis.According to the regression model,the primary and secondary order of each item in the model,the primary and secondary order of factors and the interaction between factors were investigated,and the feasibility of introducing CC-EG into the BaFe_(12)O_(19)synthesis process to improve its RCP value was revealed.The results of optimal level combination analysis and verification experiments further show that partial replacement of water solvent with CC-EG can improve the crystallization order of BaFe_(12)O_(19)and reduce its microscopic strain,thus significantly improve its RCP.The XRD,SEM and VSM analysis results show that the increase of RCP obviously contributes to the radial size and saturation magnetization of BaFe12 O19.BaFe12 O19 with good properties can be prepared by choline chloride-ethylene glycol-water medium.

关 键 词：钡铁氧体 氯化胆碱-乙二醇 化学共沉淀法 均匀设计 相对结晶纯度 

分 类 号：TM277[一般工业技术—材料科学与工程]