PEG-6000对Mn-Zn铁氧体纳米粉体烧结特性的影响  

Effect of PEG-6000 on Sintering Properties of Mn-Zn Ferrite Nanopowders

作　　者：索强强[1] 华菲[2] 张雪林[2] 彭会芬[2] 王新[1,2] 

机构地区：[1]河北工业大学化工学院,天津300130 [2]河北工业大学材料科学与工程学院,天津300130

出　　处：《人工晶体学报》2017年第7期1327-1332,1337,共7页Journal of Synthetic Crystals

基　　金：天津市应用基础与前沿技术研究计划(15JCZDJC31000)

摘　　要：利用化学共沉淀回流法制备Mn-Zn铁氧体纳米粉体的过程中,加入适量PEG-6000,试图通过在纳米颗粒表面形成一保护层以起到抑制其团聚的目的。研究结果表明,PEG-6000的加入不仅减小了纳米粒子的尺寸,还有效缓解了它们的团聚。将这些纳米Mn-Zn铁氧体粉体进行成型烧结,材料的起始磁导率随烧结温度的升高呈抛物线规律变化,并于1200℃达到最大值。而且添加PEG-6000的样品起始磁导率比未添加的提高了约20%。导致这一变化的原因应归咎于纳米粉体稳定性的改善以及烧结后材料内部组织均匀度的提高和晶粒尺寸的减小。In the research,some PEG-6000 was introduced during the preparation of Mn-Zn ferrite nanopowders by chemical co-precipitation and reflexing method,tried to form a protective layer around the Mn-Zn ferrite nanoparticles for the purpose of prohibiting their aggregation. The results proved that addition of PEG-6000 not only decreased size of the nanoparticles,but also effectively alleviated their aggregation. By using those Mn-Zn ferrite nanopowders as starting materials to mould and then sinter at suitable temperatures,it＇s found that initial permeability of the sintere samples parabolically varied with an increase in temperatures and reach the maximum at the sintering temperature of 1200 ℃. The PEG-6000 added samples presente the initial permeability about 20% higher than those without any PEG-6000. Those results should be attributable to improvement in stability of the nanopowders and homogeneity in microstructure of the sintered samples,together with decrease in their grain size,by PEG-6000.

关 键 词：MN-ZN铁氧体 共沉淀回流法 磁性材料 烧结 PEG-6000 

分 类 号：TM271[一般工业技术—材料科学与工程]