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首頁> 外文期刊>Journal of intelligent material systems and structures >The field-dependent viscoelastic and transient responses of plate-like carbonyl iron particle based magnetorheological greases
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The field-dependent viscoelastic and transient responses of plate-like carbonyl iron particle based magnetorheological greases

機(jī)譯：板狀羰基鐵顆粒磁流變潤滑脂的場相關(guān)粘彈性和瞬態(tài)響應(yīng)

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The field-dependent viscoelastic and transient behaviours of plate-like-carbonyl-iron-particle-based magnetorheological greases are experimentally investigated in this study. The plate-like carbonyl-iron particles are made from spherical carbonyl-iron particles through a milling process using a rotary ball mill. Several samples of magnetorheological greases consisting of different weight percentages of plate-like carbonyl-iron particles are prepared. The surface microstructures and distributions of the plate-like carbonyl-iron particles in the grease are observed using various types of microscopic investigations. Subsequently, the viscoelastic and transient (dynamic) rheological properties of the plate-like carbonyl-iron particles are investigated using a commercial rheometer. The spherical carbonyl-iron particles are transformed into the flattened plate-like carbonyl-iron particles with a larger surface diameter. It is shown that the viscoelastic properties such as storage modulus and response time of the plate-like carbonyl-iron particles significantly depend on the shape and particle weight fraction. The findings reveal that the shape of the carbonyl-iron particles has a significant effect on the field-dependent behaviours. Thus, the results presented in this work provide very useful scientific contributions for devising appropriate applications utilizing the plate-like-carbonyl-iron-particle-based magnetorheological greases.
機(jī)譯：在這項研究中，實驗研究了板狀羰基鐵顆粒磁流變潤滑脂的場相關(guān)粘彈性和瞬態(tài)行為。板狀羰基鐵顆粒由球形羰基鐵顆粒通過使用旋轉(zhuǎn)球磨機(jī)的研磨過程制成。制備了幾個由不同重量百分比的板狀羰基鐵顆粒組成的磁流變潤滑脂樣品。使用各種類型的顯微鏡研究來觀察潤滑脂中板狀羰基鐵顆粒的表面微觀結(jié)構(gòu)和分布。隨后，使用商業(yè)流變儀研究了板狀羰基鐵顆粒的粘彈性和瞬態(tài)（動態(tài)）流變特性。球形羰基鐵顆粒轉(zhuǎn)變成具有較大表面直徑的扁平板狀羰基鐵顆粒。結(jié)果表明，板狀羰基鐵顆粒的粘彈性質(zhì)如儲能模量和響應(yīng)時間明顯取決于其形狀和重量分?jǐn)?shù)。這些發(fā)現(xiàn)表明，羰基鐵顆粒的形狀對場依賴行為具有重要影響。因此，這項工作中提出的結(jié)果為利用板狀羰基鐵顆粒的磁流變潤滑脂設(shè)計合適的應(yīng)用提供了非常有用的科學(xué)貢獻(xiàn)。

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