摘要
以重庆市大足区天青石锶废渣为原料,采用化学共沉淀法制备了锶钡铁氧体(Sr_(x)Ba_(1-x)Fe_(12)O_(19))。通过XRD、SEM对锶钡铁氧体进行表征,探究沉淀pH值、焙烧温度、焙烧时间对锶钡铁氧体物相组成、微观形貌的影响。实验结果表明,在沉淀pH值为12、焙烧温度900℃、焙烧时间2 h的条件下,制备出的锶钡铁氧体无杂相且呈明显的六角或近六角片状形貌,饱和磁化强度(Ms)60.29 Am^(2)/kg,剩余磁化强度(Ms)32.16 Am^(2)/kg,矫顽力(Hc)30.08 kA/m,具有永磁体高饱和磁化强度(Ms)和高矫顽力(Hc)的特性。
Strontium barium ferrite(Sr_(x)Ba_(1-x)Fe_(12)O_(19))is prepared by chemical co-precipitation method using celestite strontium waste residue in Dazu District,Chongqing City.The strontium barium ferrite is characterized by XRD and SEM,and the influence of precipitation pH value,calcination temperature,and calcination time on the phase composition and microscopic morphology of strontium barium ferrite is explored.The experimental results show that under the conditions of precipitation pH value of 12,calcination temperature of 900℃,and calcination time of 2 h,the prepared strontium barium ferrite has no impurity phases and has an obvious hexagonal or nearly hexagonal flake morphology with permanent magnet high saturation magnetization(Ms)and high coercive force(Hc)characteristics.The saturation magnetization(Ms)is 60.29 Am^(2)/kg,residual magnetization(Ms)is 32.16 Am^(2)/kg and coercive force(Hc)is 308.08 kA/m.
作者
何宇
刘作华
栾进华
崔志伟
张雄
毛玲玲
孔令峰
陶长元
HE Yu;LIU Zuohua;LUAN Jinhua;CUI Zhiwei;ZHANG Xiong;MAO Lingling;KONG Lingfeng;TAO Changyuan(School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, China;State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China;Chongqing Institute of Geology and Mineral Resources, Chongqing 401120, China)
出处
《功能材料》
EI
CAS
CSCD
北大核心
2021年第4期4007-4011,共5页
Journal of Functional Materials
基金
重庆市规划和自然资源局科技资助项目(KJ-2019037,KJ-2019036)
煤炭灾害动力学与控制国家重点实验室自主研究课题重点资助项目(2011DA105287-zd201902)
2020年度重庆市出版专项资金资助项目。
关键词
锶废渣
锶钡铁氧体
化学共沉淀法
磁性能
strontium waste residue
strontium barium ferrite
chemical co-precipitation method
magnetic properties
