Internal Friction Angle of Metal Powders
Metal powders are components with multidisciplinary usage as their application is very broad. Their consistent characterization across all disciplines is important for ensuring repeatable and trouble-free processes. Ten metal powders were tested in the study. In all cases, the particle size distribu...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2018-04-01
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| Series: | Metals |
| Subjects: | |
| Online Access: | http://www.mdpi.com/2075-4701/8/4/255 |
| _version_ | 1819173462210510848 |
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| author | Jiri Zegzulka Daniel Gelnar Lucie Jezerska Alvaro Ramirez-Gomez Jan Necas Jiri Rozbroj |
| author_facet | Jiri Zegzulka Daniel Gelnar Lucie Jezerska Alvaro Ramirez-Gomez Jan Necas Jiri Rozbroj |
| author_sort | Jiri Zegzulka |
| collection | DOAJ |
| description | Metal powders are components with multidisciplinary usage as their application is very broad. Their consistent characterization across all disciplines is important for ensuring repeatable and trouble-free processes. Ten metal powders were tested in the study. In all cases, the particle size distribution and morphology (scanning electron microscope—SEM photos) were determined. The aim of this work was to inspect the flow behavior of metal powders through another measured characteristic, namely the angle of internal friction. The measured values of the effective internal friction angle in the range 28.6–32.9°, together with the spherical particle shape and the particle size distribution, revealed the likely dominant mode of the metal particle transfer mechanism for stainless steel 316L, zinc and aluminum powder. This third piston flow mechanism is described and illustrated in detail. The angle of internal friction is mentioned as another suitable parameter for the characterization of metal powders, not only for the relative simplicity of the determination but also for gaining insight into the method of the movement of individual particles during the flow. |
| first_indexed | 2024-12-22T20:23:27Z |
| format | Article |
| id | doaj.art-b442c7cad69c486093bbbc7dc329103a |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-12-22T20:23:27Z |
| publishDate | 2018-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-b442c7cad69c486093bbbc7dc329103a2022-12-21T18:13:47ZengMDPI AGMetals2075-47012018-04-018425510.3390/met8040255met8040255Internal Friction Angle of Metal PowdersJiri Zegzulka0Daniel Gelnar1Lucie Jezerska2Alvaro Ramirez-Gomez3Jan Necas4Jiri Rozbroj5VSB-TU Ostrava, ENET CENTRE–Energy Utilization of Non-traditional Energy Sources, Bulk Solids Centre, 17. listopadu 15, 70833 Ostrava, Czech RepublicVSB-TU Ostrava, ENET CENTRE–Energy Utilization of Non-traditional Energy Sources, Bulk Solids Centre, 17. listopadu 15, 70833 Ostrava, Czech RepublicVSB-TU Ostrava, ENET CENTRE–Energy Utilization of Non-traditional Energy Sources, Bulk Solids Centre, 17. listopadu 15, 70833 Ostrava, Czech RepublicTechnical University of Madrid, Department of Mechanical, Chemical and Industrial Design Engineering, Ronda de Valencia 3, 28012 Madrid, SpainVSB-TU Ostrava, ENET CENTRE–Energy Utilization of Non-traditional Energy Sources, Bulk Solids Centre, 17. listopadu 15, 70833 Ostrava, Czech RepublicVSB-TU Ostrava, ENET CENTRE–Energy Utilization of Non-traditional Energy Sources, Bulk Solids Centre, 17. listopadu 15, 70833 Ostrava, Czech RepublicMetal powders are components with multidisciplinary usage as their application is very broad. Their consistent characterization across all disciplines is important for ensuring repeatable and trouble-free processes. Ten metal powders were tested in the study. In all cases, the particle size distribution and morphology (scanning electron microscope—SEM photos) were determined. The aim of this work was to inspect the flow behavior of metal powders through another measured characteristic, namely the angle of internal friction. The measured values of the effective internal friction angle in the range 28.6–32.9°, together with the spherical particle shape and the particle size distribution, revealed the likely dominant mode of the metal particle transfer mechanism for stainless steel 316L, zinc and aluminum powder. This third piston flow mechanism is described and illustrated in detail. The angle of internal friction is mentioned as another suitable parameter for the characterization of metal powders, not only for the relative simplicity of the determination but also for gaining insight into the method of the movement of individual particles during the flow.http://www.mdpi.com/2075-4701/8/4/255metal powdersparticle size distributionparticle shapeangle of internal frictionpiston mechanism |
| spellingShingle | Jiri Zegzulka Daniel Gelnar Lucie Jezerska Alvaro Ramirez-Gomez Jan Necas Jiri Rozbroj Internal Friction Angle of Metal Powders Metals metal powders particle size distribution particle shape angle of internal friction piston mechanism |
| title | Internal Friction Angle of Metal Powders |
| title_full | Internal Friction Angle of Metal Powders |
| title_fullStr | Internal Friction Angle of Metal Powders |
| title_full_unstemmed | Internal Friction Angle of Metal Powders |
| title_short | Internal Friction Angle of Metal Powders |
| title_sort | internal friction angle of metal powders |
| topic | metal powders particle size distribution particle shape angle of internal friction piston mechanism |
| url | http://www.mdpi.com/2075-4701/8/4/255 |
| work_keys_str_mv | AT jirizegzulka internalfrictionangleofmetalpowders AT danielgelnar internalfrictionangleofmetalpowders AT luciejezerska internalfrictionangleofmetalpowders AT alvaroramirezgomez internalfrictionangleofmetalpowders AT jannecas internalfrictionangleofmetalpowders AT jirirozbroj internalfrictionangleofmetalpowders |