永磁钡铁氧体制备的新途径.PDF

1998 11 　　　　　 31　 6 　　　　　　 　　　　　　 Nov. 1998 JOURNAL OF TIANJIN UNIVERSITY 　Vol. 31 No. 6　 * 祖光裕 　包　兴　张永祥 () 　　以炼钢烟尘为原料制作永磁钡铁氧体,通过掺杂改善制备中的固相反应;通过控制气 与温度控制物料间的相反应; 通过对原料的活化和晶型转化使形成永磁钡铁氧体所需要的晶型. 采用 X 射线分析、电子衍射和显微形貌分析等方法 ,阐述了永磁钡铁氧体在制备过程中各种因素 的作用和相互影响. 　,,, 　 58 T Q NEW CHANNEL OF MAKING HARD BARIUM FERRITE Zu Guangyu　Bao Xing　Zhang Yongxiang ( School of Elect ronic Information Engineering , Tianjin Universit ) Ab tract　With the furnace dust produced in steel-making as raw material hard barium ferrites are . : made The required cr stal phase of these ferrites is obtained th rough the following process dop- , , , ing control of air and temperature activation of th e raw material and the cr stal phase t ransfor- mation. The action and interaction of different factors in the preparation of the ferrites are ex- plained b methods such as X -ra anal sis. electron diffraction, and microphotograph . 　 , , , Keyword doping activation cr stal phase transformation ferrite 　　、、、、 .. .,,、 , - 2 3 ,, . r Fe O FeO ,., ,;,, .,,. 、,,, .. 1997 4 29. 1997 9 18. 　* 　 1945, ,. 1945, , . Born in male associate prof 　 31 6　　　　　　　　　: ·789· 1　 　　、、、., , ( BaFe12 O19 ) .,, ,.,、 、,. 1. 1　 　　、,., ,. 1. 1. 1　亚铁离子的氧化 3 4 1 2 2 3 　　　　　　　　　2Fe O+