Hardness Measurement of Particulate Matter.

Tsubaki, JunIchiro; Mori, Takamasa; Yamakawa, Hiroo; Mori, Hideki; Hirose, Hitoshi

doi:10.4164/sptj.39.339

Cited by 2 publications

(3 citation statements)

References 6 publications

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“…The powder bed for the wettability test was prepared via two different methods: the conventional tapping method and our developed shearing and compressing method. 19,20) For the tapping method, particles were placed into a cell with a diameter and depth of 10 mm; subsequently, the cell was dropped freely from a height of approximately 10 mm for 100 or 300 times, as shown in Fig. 1.…”

Section: Particle Packing Methodsmentioning

confidence: 99%

“…This shearing procedure is expected to render the powder bed homogeneous owing to the rearrangement of the particles. 19,20) To verify the repeatability, the test was performed five times for each experimental condition.…”

Section: Particle Packing Methodsmentioning

confidence: 99%

“…11 into eq. (19). For comparison, the specific surface area calculated based on the nominal particle size is shown in Table 3.…”

Section: Determination Of Specific Surface Area By Air Permeationmentioning

confidence: 99%

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Development of a Powder Wettability Evaluation Technique by Analyzing the Increase in Internal Pressure due to Capillary Suction of Closed Powder Bed —Effect of Powder-Bed-Preparation Method and Powder Surface Area Estimation Method—

et al. 2021

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Evaluation of powder wettability is important to prepare well dispersed slurries. Therefore, in this study, a technique for evaluating powder wettability was developed to analyze the increase in the internal pressure of a closed powder bed due to capillary suction to determine the contact angle of the powder. The effect of the powder-bed-preparation method and powder surface area estimation method on the determined value of the contact angle was discussed. We demonstrated that the improved air permeation test proposed in this research can accurately determine the powder surface area, resulting in a faithful determination of the contact angle of the powder. It was also shown that compression under the shearing method could result in a denser and more homogeneous powder bed when compared to the conventional tapping method, indicating high reproducibility for estimating the contact angle.

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Section: Particle Packing Methodsmentioning

confidence: 99%

Section: Particle Packing Methodsmentioning

confidence: 99%