Metal powders play a significant role in the success of precision component
manufacturing via metal injection molding (MIM). Key metal powder
characteristics, such as the particle size distribution and particle shape, dictate
the process parameters and component characteristics. This Ph.D. thesis
focuses on addressing the simultaneous effects of the above key powder
characteristics on feedstock performance in the MIM process. Metal powders
with particle size distributions in the range of (3-20) µm, prepared using two
widely used fabrication technologies, gas and water atomization, were chosen
in the present thesis work. Gas atomization produces spherical particles,
whereas water atomization generates irregularly shaped particles. The powders
with different sizes and shapes were analyzed for critical solid loading,
rheology including flow instabilities, injection molding, and sintering to assess
the size and shape effects in MIM. As the majority of the work emphasizes
interpreting the shape of the powder particle using a qualitative microscopic
technique, a quantitative approach based on the Euclidean distance mapping
was developed, and the results were compared with the commercially available
dynamic image analyzer.
| ISBN: | 978-80-7678-251-8 |
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| EAN: | 9788076782518 |
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| Počet stran |
37 stran |
| Datum vydání |
27. 05. 2024 |
| Pořadí vydání |
První |
| Jazyk |
anglický |
| Vazba |
e-kniha - pdf |
| Autor: |
Mukunda Bhimasena Rao Nagaraj |
| Nakladatelství |
Univerzita Tomáše Bati ve Zlíně |
| Tématická skupina |
999 - nezařazeno |
| Neprodejná publikace. Publikaci je možné poptávat zde: Volně dostupné na http://hdl.handle.net/10563/54666 |
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