纳米Fe_3O_4加入量对磁流变液性能的影响  

Influence of Nano-Fe_3O_4 Addition on the Stability of Magnetorheological Fluid

作　　者：李长江[1] 王治国[2] 王金刚[2] 

机构地区：[1]西安航空技术高等专科学校,陕西西安710077 [2]西安石油大学机械工程学院,陕西西安710065

出　　处：《磁性材料及器件》2009年第4期47-49,65,共4页Journal of Magnetic Materials and Devices

基　　金：西安石油大学科技创新基金资助项目(Z08036)

摘　　要：磁流变液的沉降稳定性是困扰其应用的难题,本研究通过加入纳米Fe3O4来改善磁流变液的稳定性。首先采用共沉淀法制备平均粒径为10nm的Fe3O4磁性粒子,将其掺入到羰基铁磁流变液中,研究其掺入比例对磁流变液稳定性和零磁场粘度的影响。通过对样品的SEM和TEM分析以及实验观察,发现纳米Fe3O4粒子的加入可以增强磁流变液中羰基铁粒子在载液中的分散效果,从而改善磁流变液的沉降稳定性。The stability of MRF （magnetorheological fluid） sedimentation is a problem that restricts its broad application. The aim of this research is to improve the MRF stability through the addition of nano-Fe3O4. Magnetic Fe3O4 particles with 10nm in diameter were prepared by coprecipitation method and then were added to carbol-MRF. The influence of content of nano-Fe3O4 on MRF viscosity and stability was studied. The results indicated that the distribution of carbonyl iron particles in MRF is modified and consequently the stability of MRF sedimentation can be improved by the addition of nano-Fe3O4.

关 键 词：磁流变液 纳米FE3O4 沉降稳定性 

分 类 号：O373[理学—流体力学] TB383[理学—力学]