Abstract Rod-like magnetite/sepiolite nanocomposite particles were fabricated using a chemical co-precipitation process and introduced as an added ingredient in a carbonyl iron (CI)-based magnetorhological fluid (MRF). The morphologies of the composite particles and CI-magnetite/sepiolite mixture were observed by scanning electron microscopy. Two types of MRFs with and without magnetite/sepiolite additive were fabricated, and their MR behaviors and sedimentation stability were investigated using a rotation rheometer and an optical analyzer system of Turbiscan, respectively. The results showed that the addition of rod-like magnetite/sepiolite additives enhanced both the dispersion and MR properties of CI-based MRF, making its potential application more promising.

中文翻译：

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棒状磁铁矿/海泡石复合颗粒对磁流变学的附加作用

摘要 棒状磁铁矿/海泡石纳米复合颗粒使用化学共沉淀工艺制备，并作为添加成分引入羰基铁 (CI) 基磁流变液 (MRF)。通过扫描电子显微镜观察复合颗粒和CI-磁铁矿/海泡石混合物的形貌。制备了含有和不含磁铁矿/海泡石添加剂的两种磁流变液，并分别使用旋转流变仪和Turbiscan光学分析仪系统研究了它们的磁流变行为和沉降稳定性。结果表明，棒状磁铁矿/海泡石添加剂的加入增强了CI基MRF的分散性和MR性能，使其潜在应用更具前景。