用铁砂(磁铁矿)尾矿制备性能优良的电波吸收材料  

Producing Fine EM Wave Absorption Material by Iron-Sand (Magnetite) Tailings

作　　者：娄明连[1] 阚涛[1] 

机构地区：[1]安徽大学物理系,安徽合肥230039

出　　处：《功能材料》2000年第2期170-171,共2页Journal of Functional Materials

摘　　要：用铁砂 (磁铁矿 )尾矿制备性能优良的电波吸收材料 ,在 7～ 12GHz频段 ,最大吸收量达 2 7dB、10dB带宽 1.9GHz ,匹配厚度 0 .74mm ,其综合性能优于精铁砂制备的吸收材料。因是废物利用 ,有较高的经济效益。经相变处理 ,磁性和结晶结构发生变化 ,对吸波材料的性能影响为 :吸收量微降 ,两吸收峰间距加大 ,带宽增加 ,匹配厚度较大增加 ,达 1.4 2mm。Producing EM wave absorption material by iron-sand (magnetite),in the range of 7～12GHz,the maximum absorption quantity can reach 27dB,10dB bandwidth is 1.9GHz,matching thickness is 0.74mm,its all round performance is better than the material produced by fine iron-sand.The reuse of this industrial waste can bring great economic benefit.After phase-transformation heat-treatment,the magnetism and crystallographic structure is changed,the influence on the performance of absorption material is: absorption quantity is decreased minutely,the distance of two absorption peaks and 10dB bandwidth is increased,matching thickness is greatly increased to 1.42mm.

关 键 词：铁砂尾矿 制备 电波吸收材料 

分 类 号：TM250.5[一般工业技术—材料科学与工程]