Suspension Rheology and Magnetorheological Finishing Characteristics of Biopolymer-Coated Carbonyliron Particles
| Autor: | Kwang-Pyo Hong, Seung Hyuk Kwon, Myeong-Woo Cho, Hyoung Jin Choi, Jung-Won Lee |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Borosilicate glass General Chemical Engineering Rheometer Magnetorheological finishing Mineralogy Polishing 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Industrial and Manufacturing Engineering Silicone oil 0104 chemical sciences chemistry.chemical_compound chemistry Magnetorheological fluid medicine Surface roughness Composite material 0210 nano-technology Xanthan gum medicine.drug |
| Zdroj: | Industrial & Engineering Chemistry Research. 56:2416-2424 |
| ISSN: | 1520-5045 0888-5885 |
| DOI: | 10.1021/acs.iecr.6b03790 |
| Popis: | Magnetorheological (MR) finishing has been adopted as a newly ultraprecision finishing method for microparticles, an optical system, and an aspherical lens, mainly by MR fluids consisting of magnetic carbonyliron (CI) particles and a carrier fluid such as silicone oil or diwater. However, CI particles are related to corrosion problems because of their oxidation, leading to unpredictable polishing results and a short lifetime of the MR fluids. To resolve this problem, we coated CI particles with a biopolymer of xanthan gum (XG) for better MR polishing and measured their MR properties using a rotational rheometer under applied magnetic fields of different strengths. Experiments were carried out to examine the material removal depth and the surface roughness for BK7 (borosilicate) glass by changing the experimental parameters. While the material-removal depth obtained using raw CI particles was deeper than that for the XG-coated CI particles, the surface roughness obtained using the XG-coated CI particles af... |
| Databáze: | OpenAIRE |
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