期刊
MATERIALS RESEARCH LETTERS
卷 7, 期 7, 页码 282-289出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/21663831.2019.1601645
关键词
3D printing; selective laser melting; overpotential; electrochemical polishing; 3D-printed surface
资金
- NUS Strategic Research Fund [R-261-509-001-646, R-261-509-001-733]
- Singapore Maritime Institute [SMI-2016-OF-04 (R261502032592)]
- Advanced Materials AMP
- Manufacturing RD Program [SMI-2016-OF-04 (R261502032592)]
- NRF [NRF-CRP16-2015-01, R284-000-159-281]
High roughness of metal structures made by selective laser melting restricted their extensive applications. A strategy of overpotential electrochemical polishing was developed for effectively smoothening three-dimensional (3D)-printed surfaces, particularly for removing sticking particles. Average surface roughness of 0.18 mu m was achieved with a small thickness removed of similar to 70 mu m through a combination of overpotential and conventional electrochemical polishing. Interestingly, micro-lattices polished with this approach nearly doubled the specific compressive plateau stress and energy absorption over as-printed lattices. Moreover, the success with 316L stainless steel, 4130 steel and AlSi10Mg, indicates the potential of this approach for smoothening other 3D-printed metals. [GRAPHICS] IMPACT STATEMENTA highly effective technology to smoothen complex and rough 3D-printed metal surfaces is developed using a novel overpotential electrochemical polishing, which can enhance mechanical and functional properties of 3D-printed metals.
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