MR fluids with nano-sized magnetic particles
MR fluids with nano-sized magnetic particles
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DOI：
10.1142/s0217979296001604
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发表时间：
1996-10-30
影响因子：
1.7
通讯作者：
Richter, HJ
中科院分区：
文献类型：
--
作者：
Kormann, C;Laun, HM;Richter, HJ
最近，含有纳米磁性铁氧体颗粒的磁流变液已经成为可能。描述了它们的组成、流变性和磁性。与传统的基于微米级颗粒的磁流变液进行了比较。在中等磁场(0.2T)作用下，纳米磁流变液的屈服应力可提高4000 pA。它可以被磁场调制，响应时间小于5ms。给出了150摄氏度下的长期热稳定性、高温和高剪切速率下的流动特性的详细信息。概述了磁流变液执行器的设计原则。
Recently magnetorheological fluids with nanosized magnetic ferrite particles have become available. Their composition, rheological and magnetic properties are described. A comparison with conventional MR fluids based on micron-sized particles is given. The yield stress of nano-MR fluids can be increased by a moderate magnetic field (0,2 T) by 4000 Pa. It can be modulated by the magnetic field with a response time of less than 5 ms. Details are given on the long term thermal stability at 150 degrees C, on flow properties at elevated temperatures and at high shear rates. Design principles for MR fluid actuator design are outlined.