Particle flowability can be improved by admixing particles smaller than the original particles (main particles). However, the effects of coating structures on the improvement of flowability are not yet fully understood. In this study, we focused on vibrating discharge particle flowability and investigated the effect of discharging vibration conditions and coating structures on improving the flowability. Main and admixed particles of 60.8 μm and 8 nm in diameter, respectively, were mixed in various mass ratios, and the discharge particle flow rates of the mixed particles were measured. Scanning electron microscopy and scanning probe microscopy images were used to analyze the coverage diameter, surface coverage ratio, and coverage height of the admixed particles on the main particle surfaces. As a result, the admixing mass ratio that gave maximum flowability was found to depend on the maximum value of the vibration acceleration. This could be explained by the relationship between the coating structures of admixed particles and the coated average surface distances due to the vibration acceleration.

通过混合比原始颗粒（主颗粒）小的颗粒，可以改善颗粒的流动性。然而，涂层结构对改善流动性的作用尚未完全了解。在这项研究中，我们集中于振动排放颗粒的流动性，并研究了排放振动条件和涂层结构对改善流动性的影响。分别以各种质量比混合直径分别为60.8μm和8 nm的主颗粒和混合颗粒，并测量混合颗粒的排放颗粒流速。使用扫描电子显微镜和扫描探针显微镜图像分析混合颗粒在主颗粒表面上的覆盖直径，表面覆盖率和覆盖高度。结果是，发现提供最大流动性的混合质量比取决于振动加速度的最大值。这可以通过振动引起的混合颗粒的涂层结构与涂层平均表面距离之间的关系来解释。