Friction measurement in powder die compaction by shear plate technique
| Autor: | I. M. Cameron, David T. Gethin, J. H. Tweed |
|---|---|
| Rok vydání: | 2002 |
| Předmět: |
Materials science
Metals and Alloys Compaction Surface finish Condensed Matter Physics Hardness Smooth surface chemistry.chemical_compound Shear (geology) chemistry Mechanics of Materials Tungsten carbide Materials Chemistry Ceramics and Composites Surface roughness Dynamical friction Composite material |
| Zdroj: | Powder Metallurgy. 45:345-353 |
| ISSN: | 1743-2901 0032-5899 |
| DOI: | 10.1179/003258902225007069 |
| Popis: | The paper explores the use of a shear plate technique to measure the frictional characteristics between a compacted powder and a target surface. The study confirms that the shear plate technique is valid to measure these frictional characteristics and that any variability in the data is a physical characteristic of the powder being tested. Surface roughness and hardness were explored fully for both iron and an alumina powder. This confirmed the major impacts of surface hardness, roughness, and roughness orientation on the friction coefficient. The static and dynamic values were found to be a minimum for the hardest surface (tungsten carbide). With regard to static friction, benefit may be obtained by using a very smooth surface finish, however, the minimum level of dynamic friction coefficient is not always associated with the smoothest surface. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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