TY - JOUR
T1 - Influence of surface roughness created by admixing smaller particles on improving discharge particle flowability of main particles
AU - Yoshida, Mikio
AU - Katayama, Tatsuki
AU - Kikuchi, Ryota
AU - Oshitani, Jun
AU - Gotoh, Kuniaki
AU - Shimosaka, Atsuko
AU - Shirakawa, Yoshiyuki
N1 - Funding Information:
This study was supported by a grant from the Hosokawa Powder Technology Foundation, Japan. The authors are grateful to Dr. Keitaroh Nakamura (Nisshin Seifun Group Inc., Japan) for the helpful discussion.
Funding Information:
This study was supported by a grant from the Hosokawa Powder Technology Foundation, Japan. The authors are grateful to Dr. Keitaroh Nakamura ( Nisshin Seifun Group Inc., Japan ) for the helpful discussion.
Publisher Copyright:
© 2018 The Society of Powder Technology Japan
PY - 2019/1
Y1 - 2019/1
N2 - Particle flowability can be improved by admixing with particles smaller than the main particles. However, the mechanism by which this technique improves flowability is not yet fully understood. In this study, we focused on vibrating discharge particle flowability as one type of flowability and investigated the influence of the main particle roughness created by the adhesion of the admixed particles on improving the flowability. The diameters of the main and admixed particles (MPs and APs) were 41.4 or 60.8 μm and 8 or 104 nm, respectively. The main and admixed particles were mixed in various mass ratios, and the discharge particle flow rates of the mixed particles were measured. Scanning electron microscopy images were acquired from two different angles to determine the three-dimensional surface roughness using image analysis software. We then calculated the coating structure parameters from the obtained three-dimensional surface roughness. The observed trends for improving the vibrating discharge particle flowability were found to differ from those reported for compression particle flowability. Furthermore, the main particle roughness conditions that led to the greatest improvement involved the presence of several admixed particle agglomerations between the main particles.
AB - Particle flowability can be improved by admixing with particles smaller than the main particles. However, the mechanism by which this technique improves flowability is not yet fully understood. In this study, we focused on vibrating discharge particle flowability as one type of flowability and investigated the influence of the main particle roughness created by the adhesion of the admixed particles on improving the flowability. The diameters of the main and admixed particles (MPs and APs) were 41.4 or 60.8 μm and 8 or 104 nm, respectively. The main and admixed particles were mixed in various mass ratios, and the discharge particle flow rates of the mixed particles were measured. Scanning electron microscopy images were acquired from two different angles to determine the three-dimensional surface roughness using image analysis software. We then calculated the coating structure parameters from the obtained three-dimensional surface roughness. The observed trends for improving the vibrating discharge particle flowability were found to differ from those reported for compression particle flowability. Furthermore, the main particle roughness conditions that led to the greatest improvement involved the presence of several admixed particle agglomerations between the main particles.
KW - 3D SEM image
KW - Admixture of nanoparticles
KW - Discharge particle flow rate
KW - Surface roughness
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U2 - 10.1016/j.apt.2018.10.018
DO - 10.1016/j.apt.2018.10.018
M3 - Article
AN - SCOPUS:85056334556
SN - 0921-8831
VL - 30
SP - 156
EP - 163
JO - Advanced Powder Technology
JF - Advanced Powder Technology
IS - 1
ER -