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Synthesis of rGO/CoFe2O4 Composite and Its Magnetorheological Characteristics

التفاصيل البيبلوغرافية
العنوان: Synthesis of rGO/CoFe2O4 Composite and Its Magnetorheological Characteristics
المؤلفون: Yang Lv, Chengjie Gong, Yuzhen Dong, Hyoung Jin Choi
المصدر: Materials, Vol 17, Iss 8, p 1859 (2024)
بيانات النشر: MDPI AG, 2024.
سنة النشر: 2024
المجموعة: LCC:Technology
LCC:Electrical engineering. Electronics. Nuclear engineering
LCC:Engineering (General). Civil engineering (General)
LCC:Microscopy
LCC:Descriptive and experimental mechanics
مصطلحات موضوعية: rGO, CoFe2O4, composite, magnetorheological, yield stress, Technology, Electrical engineering. Electronics. Nuclear engineering, TK1-9971, Engineering (General). Civil engineering (General), TA1-2040, Microscopy, QH201-278.5, Descriptive and experimental mechanics, QC120-168.85
الوصف: In this study, composite particles of rGO/CoFe2O4 were synthesized using a solvothermal method to fabricate a low-density magnetorheological (MR) material with enhanced sedimentation stability. The morphology and crystallographic features of rGO/CoFe2O4 were characterized via SEM, TEM, and XRD, and its magnetic properties were tested using VSM. The MR fluid was formulated by blending rGO/CoFe2O4 particles into silicone oil. Under different magnet strengths (H), a rotational rheometer was used to test its MR properties. Typical MR properties were observed, including shear stress, viscosity, storage/loss modulus, and dynamic yield stress (τdy) following the Herschel–Bulkley model reaching 200 Pa when H is 342 kA/m. Furthermore, the yield stress of the MR fluid follows a power law relation as H increases and the index changes from 2.0 (in the low H region) to 1.5 (in the high H region). Finally, its MR efficiency was calculated to be about 104% at H of 342 kA/m.
نوع الوثيقة: article
وصف الملف: electronic resource
اللغة: English
تدمد: 1996-1944
Relation: https://www.mdpi.com/1996-1944/17/8/1859; https://doaj.org/toc/1996-1944
DOI: 10.3390/ma17081859
URL الوصول: https://doaj.org/article/f466597a7cf6480280ce69009d23a145
رقم الأكسشن: edsdoj.f466597a7cf6480280ce69009d23a145
قاعدة البيانات: Directory of Open Access Journals
الوصف
تدمد:19961944
DOI:10.3390/ma17081859