Mapping Spatial Distribution of Pores in an Additively Manufactured Gold Alloy Using Neutron Microtomography
| Autor: | Michael Meyer, Hossein Ghasemi-Tabasi, Chiara Carminati, Markus Strobl, Roland E. Logé, Jamasp Jhabvala, Pavel Trtik |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
laser powder bed fusion
0209 industrial biotechnology porosity Materials science 02 engineering and technology Residual Spatial distribution lcsh:Technology lcsh:Chemistry Gold alloy gold alloy 020901 industrial engineering & automation Relative density General Materials Science Neutron Composite material Penetration depth Porosity lcsh:QH301-705.5 Instrumentation Gold alloys Fluid Flow and Transfer Processes lcsh:T non-destructive investigations Process Chemistry and Technology General Engineering 021001 nanoscience & nanotechnology lcsh:QC1-999 Computer Science Applications lcsh:Biology (General) lcsh:QD1-999 lcsh:TA1-2040 lcsh:Engineering (General). Civil engineering (General) neutron microtomography 0210 nano-technology lcsh:Physics |
| Zdroj: | Applied Sciences Volume 11 Issue 4 Applied Sciences, Vol 11, Iss 1512, p 1512 (2021) |
| ISSN: | 2076-3417 |
| DOI: | 10.3390/app11041512 |
| Popis: | A crucial criterion for the quality of the additively manufactured parts is the porosity content for achieving an acceptable final relative density. In addition, for jewelry applications, visible pores are unacceptable at or in the vicinity of the surface. In this study, non-destructive 3D neutron microtomography is applied to map the spatial distribution of pores in additively manufactured red-gold samples. The 3D imaging assessment underlines the high relative density of the printed red-gold sample and indicates residual pore sizes are predominantly below the limit of concern for jewelry applications. The 3D maps of pores within printed samples highlight the effect of the scanning strategy on the final quality and location of pores in the printed samples. These results confirm that neutron microtomography is a novel and precise tool to characterize residual porosity in additively manufactured gold alloys and other higher-Z materials where such investigation using other non-destructive methods (such as X-rays) is challenging due to the limited penetration depth. |
| Databáze: | OpenAIRE |
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