Development of nanoparticle-dispersed magnetorheological fluids for reversible and functional joining

2016 Fiscal Year Final Research Report

• Project/Area Number: 26420703
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Composite materials/Surface and interface engineering
• Research Institution: Osaka University
• Principal Investigator: Abe Hiroya 大阪大学, 接合科学研究所, 准教授 (50346136)
• Research Collaborator: NOMA Jun-ichi (株)栗本鐵工所, 技術開発室
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 磁気粘性効果 / コロイド / ナノ粒子 / レオロジー

Outline of Final Research Achievements

A high concentration magnetic colloid was synthesized by dispersing Fe nanoparticles in oil phase. The Fe nanoparticles were synthesized from a bulk Fe by arc plasma method, and were surface-modified to enhance oxidation resistance and dispersion stability. The highest magnetorheological (MR) effect among magnetic colloids was observed in this magnetic colloid. MR effect is a phenomenon in which the fluidity changes isothermally reversibly from a liquid to a gel under a magnetic field. In addition, we have found a function to mimic human feeling (haptic interface) for a fluidic device using the magnetic colloid, and it is expected to be applied as a soft material with reversible joining function.

Free Research Field

無機材料科学