材料研究学报  2012, Vol. 26 Issue (1): 107-112

研究论文 本期目录 | 过刊浏览 |

二次化学共沉淀法制备片状钡铁氧体的形成历程及磁性能研究

曹晓晖1, 陈威宏1,  刘宇1,  孙杰1,  曹晓晖1,  王文举1,  于名讯2

1.沈阳理工大学环境与化学工程学院 沈阳 110168 2.中国兵器工业集团第53研究所 济南 250031

Synthesis of the Plate–shaped Barium Ferrites by the Second Chemical Co–precipitation Method and Investigation of the Magnetic Properties

MENG Jinhong1, CHEN Weihong1, LIU Yu1, SUN Jie1, CAO Xiaohui1, WANG Wenju1, YU Mingxun2

1.School of Environmental and Chemical Engineering, Shenyang Ligong University, Shenyang 110168 2.The 53rd Research Institute of China Ordnance Industry Group Corporation, Jinan 250031

曹晓晖 陈威宏 刘宇 孙杰 曹晓晖 王文举 于名讯. 二次化学共沉淀法制备片状钡铁氧体的形成历程及磁性能研究[J]. 材料研究学报, 2012, 26(1): 107-112.
. Synthesis of the Plate–shaped Barium Ferrites by the Second Chemical Co–precipitation Method and Investigation of the Magnetic Properties[J]. Chin J Mater Res, 2012, 26(1): 107-112.

摘要 参考文献 相关文章 Metrics 全文: PDF(1020 KB)   摘要: 采用二次化学共沉淀法制备出六角或近六角片状BaFe12O19, 其颗粒径向尺寸和径厚比分别为0.4--2 μm和4--20。通过XRD、FTIR、TG/DTA及SEM/EDS分析技术研究了片状BaFe12O19的形成历程。结果表明: 前驱体为非晶态BaCO3、低结晶态Fe(OH)3和晶态α--Fe2O3包覆原料BaFe12O19复合物; 前驱体在焙烧过程中经过 Fe(OH)3脱水、BaCO3分解反应、中间相α--Fe2O3和BaO反应得到终产物BaFe12O19。基于形成历程, 六角片状BaFe12O19较原料BaFe12O19表现出显著提高的颗粒径向尺寸和径厚比、较高的纯度和略低的结晶有序程度, 进而表现出明显提高的矫顽力、略低的饱和磁化强度和剩余磁化强度。 关键词 ： 无机非金属材料,  片状BaFe12O19,  二次化学共沉淀法,  磁性能,  形成历程     Abstract：Hexagonal plate–shaped BaFe12O19 ferrites are prepared by the second chemical coprecipitation method using co-precipitation synthesized–BaFe12O19 ferrites as template materials. The particle size of the prepared plate-shaped BaFe12O19 ferrites is in the range of 0.4-2 μm with a diameterto-thickness ratio of 4–20. The synthesis process is studied by using XRD, FTIR, TG/DTA, SEM/EDS. It is shown that the precursor was a composite of BaFe12O19 coated by non–crystalline BaCO3, low-crystalline Fe(OH)3 and crystalline α–Fe2O3. During calcinations,the precursor experiences dehydration of Fe(OH)3, decomposition of BaCO3, and the reaction of α–Fe2O3 and BaO, and finally produces BaFe12O19. The prepared plated–shaped BaFe12O19 ferrite presents a higher coercivity and lower saturation magnetization and remanence, owing to its higher purity, slightly poor crystallinity, larger radial size and diameter–length ratio. Key words： inorganic non–metallic materials    plate–shaped BaFe12O19    second chemical co-precipitation method    magnetic property    formation 收稿日期: 2011-03-25      ZTFLH:  TM277   基金资助: 总装备部预研51310060303资助项目。 服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 曹晓晖 44.8K 链接本文: https://www.cjmr.org/CN/      或      https://www.cjmr.org/CN/Y2012/V26/I1/107 1 ZHOU Zhigang, Magnetic Ferrite Materials (Beijing, Science Press, 1981) p.23 (周志刚,  铁氧体磁性材料  (北京, 科学出版社, 1981) p.23) 2 GE Fuding, ZHU Jing, CHEN Limin, The dependence of properties of absorbing materials on the shape of particle absorbants, Aerospace Materials & Technology, 05, 42(1996) (葛副鼎, 朱静, 陈利民, 吸收剂颗粒形状对吸波材料性能的影响, 宇航材料工艺,  05, 42(1996)) 3 George C. Hadjipanayis, Gary A. 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