降低铁氧体橡塑磁粉Cr^(6+)含量的方法与效果  

The Methods and Effects of Reducing Cr^(6+) Contents in Plastic-rubber Ferrite Magnetic Powder

作　　者：冯爱玲[1] 舒扬[1] 

机构地区：[1]北矿磁材科技股份有限公司,北京100067

出　　处：《磁性材料及器件》2010年第2期66-68,78,共4页Journal of Magnetic Materials and Devices

摘　　要：针对国内生产的铁氧体橡塑磁粉六价铬(Cr6+)含量高而带来的环保问题,通过借鉴处理Cr6+的常用方法,结合铁氧体橡塑磁粉中Cr6+的形成特点,对橡塑磁粉中Cr6+进行削减试验研究。实验结果表明,在常规的生产工艺过程中添加适当的试剂对磁粉中Cr6+进行溶解或还原处理,或者几种方法并用,可控制磁粉的Cr6+含量在20×10―6以下,而且不影响磁粉磁性能,从而获得环保型橡塑磁粉。On account of high C^r6＋ content in domestic plastic-rubber ferrite powder and considering the characteristic of C^r6＋ formation in the powder, experiments were performed on reducing the C^r6＋ content by using conventional C^r6＋ reducing way. The result indicated that the C^r6＋ content can be reduced to a low level of20×10^-6 by dissolving or reducing the C^r6＋ in powder by adding proper agent in the common production, without decreasing the magnetic property of the powder. By these methods, environmental protection magnetic powder can be produced.

关 键 词：铁氧体橡塑磁粉 Cr6+含量 磁性能 

分 类 号：TM277[一般工业技术—材料科学与工程]