Surface Characterization and Bulk Property Analysis of Aluminum Powders Treated with Hydrophobic Coatings: Stearic Acid and Phenyl-Phosphonic Acid
Abstract
:1. Introduction
2. Materials and Methods
2.1. Materials
2.2. Stearic Acid (SA-Al)
2.3. Phenyl-Phosphonic Acid (PPA-Al)
2.4. Diffuse Reflectance Infrared Spectroscopy
2.5. X-ray Photoelectron Spectroscopy
2.6. Bulk Density
2.7. FT4 Powder Rheometer® Measurements
3. Results and Discussion
3.1. Surface Characterization
3.2. Comparison of Bulk Properties
4. Conclusions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
Abbreviations
Apparent density (g/mL) | |
CBD | Conditioned Bulk Density (g/mL) |
DRIFTS | Diffuse Reflectance Infrared Fourier Transform Spectroscopy |
FRI | Flow Rate Index (-) |
Hausner Ratio (-) | |
PPA-Al | Phenyl-phosphonic Acid Treated Aluminum Powder |
R-Al | Raw aluminum powder |
SI | Stability Index (-) |
SA | Stearic Acid |
SA-Al | Stearic Acid Treated Aluminum Powder |
SE | Specific Energy (mJ/g) |
Tap density (g/mL) | |
XPS | X-ray photoelectron spectroscopy |
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Value | Group | Designation |
---|---|---|
>1.4 | C | Cohesive |
1.4−1.25 | A−C | Transition Group |
<1.25 | A | Aeratable |
Label | Peak or Band (cm−1) | References |
---|---|---|
1472 | [12,13,23] | |
1510 | [12,13,23] | |
1584 | [12,13,23] | |
1656 | [12,13,23] | |
1688 | [12,13,23] | |
1702 | [12,13,23] |
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Ludwig, B. Surface Characterization and Bulk Property Analysis of Aluminum Powders Treated with Hydrophobic Coatings: Stearic Acid and Phenyl-Phosphonic Acid. Solids 2024, 5, 1-13. https://doi.org/10.3390/solids5010001
Ludwig B. Surface Characterization and Bulk Property Analysis of Aluminum Powders Treated with Hydrophobic Coatings: Stearic Acid and Phenyl-Phosphonic Acid. Solids. 2024; 5(1):1-13. https://doi.org/10.3390/solids5010001
Chicago/Turabian StyleLudwig, Bellamarie. 2024. "Surface Characterization and Bulk Property Analysis of Aluminum Powders Treated with Hydrophobic Coatings: Stearic Acid and Phenyl-Phosphonic Acid" Solids 5, no. 1: 1-13. https://doi.org/10.3390/solids5010001
APA StyleLudwig, B. (2024). Surface Characterization and Bulk Property Analysis of Aluminum Powders Treated with Hydrophobic Coatings: Stearic Acid and Phenyl-Phosphonic Acid. Solids, 5(1), 1-13. https://doi.org/10.3390/solids5010001