The wetting behavior was measured for AlO-C in contact with AlSi7Mg with a conventional sessile drop test (vacuum, 950 °C and 180 min) and a sessile drop test with a capillary purification unit (vacuum, 730 °C and 30 min). The conventional test yielded contact angles of around 92°, whereas the sessile drop measurement with capillary purification showed a strongly non-wetting behavior with a determined apparent contact angle of the rolling drop of 157°. Filtration tests, which were repeated twice, showed that the AlO-C filter possessed a better filtration behavior than the AlO reference filter. For both filtration trials, the PoDFA (porous disc filtration analysis) index of the AlO-C filter sample was equal to half of the PoDFA index of the AlO reference filter sample, indicating a significantly improved filtration performance when using AlO-C filter. Notable is the observation of a newly formed layer between the aluminum and the AlO-C coating. The layer possessed a thickness between 10 µm up to 50 µm and consisted of Al, C, and O, however, with different ratios than the original AlO-C coating. Thermodynamic calculations based on parameters of the wetting and filtration trials underline the possible formation of an AlOC-layer.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7559570 | PMC |
| http://dx.doi.org/10.3390/ma13183962 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Evaporative Morphology Tuning of Conducting Polymer Films Under Controlled Vacuum Conditions.
Adv Sci (Weinh)
December 2024
Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-Ro, Nam-gu, Pohang, 37673, Republic of Korea.
The evaporation of drops on solid surfaces is a ubiquitous natural phenomenon, and their dynamics play a pivotal role in many biological, environmental, and industrial processes. However, the complexity of the underlying mechanisms has largely confined previous studies to liquid drop evaporation under atmospheric conditions. In this study, the first comprehensive investigation of the evaporation dynamics of conducting polymer-containing drops under controlled vacuum environments is presented.
View Article and Find Full Text PDFTheoretical Analysis of Contact Angle and Contact Angle Hysteresis of Wenzel Drops on Superhydrophobic Surfaces.
Nanomaterials (Basel)
December 2024
College of Electrical and Power Engineering, Taiyuan University of Technology, Taiyuan 030024, China.
Although understanding the wetting behavior of solid surfaces is crucial for numerous engineering applications, the mechanisms driving the motion of Wenzel drops on rough surfaces remain incompletely clarified. In this study, the contact angle and contact angle hysteresis of Wenzel drops on superhydrophobic surfaces are investigated from a thermodynamic perspective. The free energy of the system is theoretically analyzed, thereby determining the equilibrium contact angle.
View Article and Find Full Text PDFWettability of Heat Cured Acrylic Resin Interlaciated With Recycled Poly Methyl Methacrylate: An Study.
J Int Soc Prev Community Dent
October 2024
Department of Prosthodontics Dentistry, University of Mosul, Mosul, Iraq.
Aim: This study was conducted to improve the wettability of heat cured acrylic resin by the incorporation of recycled poly methyl methacrylate (PMMA) as well as the assessment of how different aging times affected it.
Materials And Methods: A total of 40 heat cured resin specimens were prepared and randomly divided into: The study and the control groups. Recycled PMMA was added to the study group at 1%, 3%, and 5% concentrations by volume.
Atomic Interaction S. aureus/Machined and Additive Manufacturing Ti-6Al-4V and Ti-35Nb-7Zr-5Ta Disks for Dental Implants.
J Biomed Mater Res B Appl Biomater
December 2024
Department of Dental Materials and Prosthesis, School of Dentistry of Ribeirão Preto, University of São Paulo (USP), Ribeirão Preto, São Paulo, Brazil.
The adhesion strength of a bacterial strain on a substrate influences colonization and biofilm development, so the biomolecular analysis of this interaction is a step that allows insights into the development of antifouling surfaces. As peri-implantitis is the main cause of failure of implant-supported oral rehabilitations and the dental literature presents gaps in the atomic bacteria/surface interaction, this study aimed to correlate the qualitative variation of roughness, wettability, chemical composition, and electrical potential of Ti-6Al-4V and Ti-35Nb-7Zr-5Ta (TNZT) disks obtained by machining (M) and additive manufacturing (AM) on the colonization and adhesion strength of S. aureus quantified by atomic force microscopy (AFM).
View Article and Find Full Text PDFInvestigation of correlations between powder functionalities and powder surface properties for milk protein ingredients.
J Dairy Sci
January 2025
Food Rheology Laboratory, Department of Food, Bioprocessing and Nutrition Sciences, North Carolina State University, Raleigh, NC 27695; Southeast Dairy Foods Research Center, North Carolina State University, Raleigh, NC 27695. Electronic address:
Article Synopsis
- Milk protein powders are essential ingredients in many processed foods, but understanding their functionalities poses challenges for manufacturers.
- This study explored relationships between the surface properties of six types of milk protein powders and their functional characteristics, such as wettability and flowability, using rapid evaluation methods.
- Findings showed that surface energy-related factors, like cohesion work, are closely linked to the powders' functional properties, suggesting these surface metrics can predict how well the powders will perform in food formulations.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!