Selective Laser Sintering of Nano Al2O3 Infused Polyamide
Nano Al2O3 polyamide composites are evaluated for processing by selective laser sintering. A thermal characterization of the polymer composite powders allowed us to establish the possible initial settings. Initial experiments are conducted to identify the most suitable combinations of process parame...
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doaj-28296746cea4480fa8415c16007be4992020-11-24T20:42:45ZengMDPI AGMaterials1996-19442017-07-0110886410.3390/ma10080864ma10080864Selective Laser Sintering of Nano Al2O3 Infused PolyamideAnthony Warnakula0Sarat Singamneni1Mechanical Engineering Department, Auckland University of Technology, Auckland 1010, New ZealandMechanical Engineering Department, Auckland University of Technology, Auckland 1010, New ZealandNano Al2O3 polyamide composites are evaluated for processing by selective laser sintering. A thermal characterization of the polymer composite powders allowed us to establish the possible initial settings. Initial experiments are conducted to identify the most suitable combinations of process parameters. Based on the results of the initial trials, more promising ranges of different process parameters could be identified. The post sintering characterization showed evidence of sufficient inter-particle sintering and intra-layer coalescence. While the inter-particle coalescence gradually improved, the porosity levels slightly decreased with increasing laser power. The nano-filler particles tend to agglomerate around the beads along the solid tracks, possibly due to Van der Walls forces. The tensile stress results showed an almost linear increase with increasing nano-filler content.https://www.mdpi.com/1996-1944/10/8/864selectivelasersinteringpolyamidenano-ceramicscoalescence |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Anthony Warnakula Sarat Singamneni |
spellingShingle |
Anthony Warnakula Sarat Singamneni Selective Laser Sintering of Nano Al2O3 Infused Polyamide Materials selective laser sintering polyamide nano-ceramics coalescence |
author_facet |
Anthony Warnakula Sarat Singamneni |
author_sort |
Anthony Warnakula |
title |
Selective Laser Sintering of Nano Al2O3 Infused Polyamide |
title_short |
Selective Laser Sintering of Nano Al2O3 Infused Polyamide |
title_full |
Selective Laser Sintering of Nano Al2O3 Infused Polyamide |
title_fullStr |
Selective Laser Sintering of Nano Al2O3 Infused Polyamide |
title_full_unstemmed |
Selective Laser Sintering of Nano Al2O3 Infused Polyamide |
title_sort |
selective laser sintering of nano al2o3 infused polyamide |
publisher |
MDPI AG |
series |
Materials |
issn |
1996-1944 |
publishDate |
2017-07-01 |
description |
Nano Al2O3 polyamide composites are evaluated for processing by selective laser sintering. A thermal characterization of the polymer composite powders allowed us to establish the possible initial settings. Initial experiments are conducted to identify the most suitable combinations of process parameters. Based on the results of the initial trials, more promising ranges of different process parameters could be identified. The post sintering characterization showed evidence of sufficient inter-particle sintering and intra-layer coalescence. While the inter-particle coalescence gradually improved, the porosity levels slightly decreased with increasing laser power. The nano-filler particles tend to agglomerate around the beads along the solid tracks, possibly due to Van der Walls forces. The tensile stress results showed an almost linear increase with increasing nano-filler content. |
topic |
selective laser sintering polyamide nano-ceramics coalescence |
url |
https://www.mdpi.com/1996-1944/10/8/864 |
work_keys_str_mv |
AT anthonywarnakula selectivelasersinteringofnanoal2o3infusedpolyamide AT saratsingamneni selectivelasersinteringofnanoal2o3infusedpolyamide |
_version_ |
1716821859514712064 |