![]() ![]() However, the high reflectance (85%) of theĪu particles near the infrared range was observed to affect the energyĪbsorption during laser processing, leading to poor interlayer adhesion Khan and Dickens showcased the ability to process 24 carat Au Hence, AM is considered as one of the key enablers for Interest in the jewelry industries to use these computer driven processes to make customised products with a high degree of precision and accuracy. (Ag), platinum (Pt) and their alloys are limited. Technology, studies processing precious metals such as gold (Au), silver Although a wide range of metals and alloys can be processed using this ![]() (DMLS) and electron beam melting (EBM), are used to fabricate partsįor various automotive, aerospace and biomedical applications. With recent advancements in material development, PBF technologies, including selective laser melting (SLM), direct metal laser sintering Among these, PBF and DED are the most widely Powder-bed fusion (PBF) and directed-energy deposition (DED) are VAT photo-polymerisation, material jetting (MJ), material extrusion, ![]() Among the seven AM processes classified by the American Society for Testing and Materials (ASTM), (CAD) driven process include, but are not limited to, (i) freedom of design (ii) the ability to produce near-net shape and end use parts, (iii) reduced time-to-market, (iv) decreased supply-chain, (v) reduced postprocessing requirements in terms of tooling, (vi) high material Some of the key advantages of this computer aided design Mainstream manufacturing is primarily dictated by the added advantages of AM compared to the traditional forming and subtractive The success of additive manufacturing (AM) in finding a place in This is an open access article under the CC BY license (). ⁎ Corresponding author at: Centre for Additive Manufacturing, Coates Building, Faculty of Engineering, The University of Nottingham, University Park, Nottingham, NG9 7RD, UK.Ġ264-1275/© 2017 The Authors. This is an open access article under the CC BY license ( /licenses/by/4.0/). Parts from AgNPs using inkjet technology, this study opens a novel route for processing nano-scale particulates Thus by demonstrating the possibility to fabricate dense Was 29% harder than the 600 dpi sample, showcasing samples with higher print resolution can contribute towards less voids and improved mechanical properties. Nanopores and 77% lower micro-pores compared to the 600 dpi sample. The 750 dpi sample showed a 25% reduction in Elemental mapping confirmed the structure to beĬomposed of 87% of silver along with carbon and oxygen. Pinning effect, residual surface temperature, insufficient droplet overlap and surface defects were the key factors contributing to the voids. Examination of the sample using X-rayĬomputed tomography and scanning electron microscopy revealed the existence of both micro- and nanoscale pores within the structure. A bespoke JETx® three dimensional (3D) inkjet printing machine was used to print and subsequently sinter up to 1000 layers of AgNPs using an infrared source. Study, the capability of inkjet printing was explored to fabricate macroscopic parts from commercial silver nanoparticle ink (AgNPs). The adoption of additive manufacturing technology is gaining interest for processing precious metals. Received in revised form 25 September 2017 By increasing the printing resolution to.Residual surface temperature due to infrared exposure for sintering caused.The voids witnessed in the 600 dpi sample are primarily due to insufficient.Manufacturing Metrology Team, Faculty of Engineering, The University of Nottingham, Nottingham NG7 2RD, UK Tuck aĬentre for Additive Manufacturing, The University of Nottingham, Nottingham NG7 2RD, UK Jayasheelan Vaithilingam a,⁎, Ehab Saleh a, Lars Körner a,b, Ricky D. Journal homepage: 3-Dimensional inkjet printing of macro structures from Contents lists available at ScienceDirect ![]()
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