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Preparation and Polishing Performance of Dendritic Mesoporous Silica Particle Abrasives |
WANG Wanying1,CHEN Ailian2,3,MA Xiangyu1,CAI Wenjie1,CHEN Yang1() |
1. School of Materials Science and Engineering, Changzhou University, Changzhou 213164, China 2. School of Mechanical Engineering, Changzhou University, Changzhou 213164, China 3. Jiangsu Key Laboratory of Green Process Equipment, Changzhou 213164, China |
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Cite this article:
WANG Wanying,CHEN Ailian,MA Xiangyu,CAI Wenjie,CHEN Yang. Preparation and Polishing Performance of Dendritic Mesoporous Silica Particle Abrasives. Chinese Journal of Materials Research, 2019, 33(10): 742-748.
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Abstract The dendritic mesoporous silica particles (DMSPs) with Y-type mesochannels were synthesized via an oil-water biphase stratification reaction with decahydronaphthalene as the upper oil phase. The spherical DMSPs were then characterized by means of TEM, SEM, Low-angle XRD, nitrigen adsorption/desorption and particle size distribution. Results show that the prepared particles presented an average particle size of 72±6 nm with a narrow size distribution; The DMSPs presented three-dimensional central-radial mesochannels with an average pore inner diameter of 7.7 nm; The formed mesopores presented the lack of long-range order. After polishing with DMSPs abrasives, the root-mean-square roughness of oxidized silicon workpieces reduced from 0.76 to 0.21 nm. The maximum asperity height in sectional profiles decreased from 1.48 to 0.50 nm, and the maximum valley depth reduced from 1.86 to 0.45 nm. An average removal rate of 187 nm/min was achieved. Furthermore, the interfacial friction and wear behavior and contact adhesion effect of DMSPs abrasives were also discussed.
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Received: 12 February 2019
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Fund: National Natural Science Foundation of China(51405038);National Natural Science Foundation of China(51575058);National Natural Science Foundation of China(51875052) |
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