Abstract
A limiting factor for industrial usage of laser-sintered parts is the high surface roughness due to the semi-molten or attaching powder particles resulting from tool and pressureless manufacturing. An approach to improve the surface quality is the postprocessing with acids to smoothen the surface as it enables improvement without geometrical restrictions of the parts. The present work deals with the usage of nitric, hydrochloric, and trifluoroacetic acids, and exhibits the influence on the resulting surface morphology, dimensional accuracy, and the mechanical properties. The results exhibit different interaction mechanics and show great differences in the resulting part properties.
| Original language | English |
|---|---|
| Pages (from-to) | 830-837 |
| Number of pages | 8 |
| Journal | Journal of Polymer Engineering |
| Volume | 39 |
| Issue number | 9 |
| DOIs | |
| State | Published - 1 Oct 2019 |
| Externally published | Yes |
Keywords
- laser sintering
- mechanical properties
- polyamide 12
- post-treatment
- roughness