The paper reported the results of a study concerned with principle operation 3D printing technology using method selective sintering metallic powders, and taking into account their advantages drawbacks. applying DMLS (Direct Metal Laser Sintering) is presented. On basis performed tests, anisotropy printed materials demonstrated. reasons responsible for this phenomenon are identified. presents s...

In the present paper the sintering behavior of 3 mol% yttria-stabilized zirconia (3Y-TZP) with and without small amount (0.2 wt %) of SiO2 additive was investigated. It has been studied the silica impact which was added in two ways (co-precipitation and mechanical mixing) on sintering kinetics of 3Y-TZP nanopowders at the initial sintering stage. It was found the silica additive leads to the ch...

Nanoparticles have been an area of active research in recent years due to their properties, which can be greatly different from the bulk. In this work, we study the sintering of TiO2 nanoparticles using molecular dynamics simulations. Such sintering occurs in flame reactors where nanotitania is prepared via the chloride process. Decrease in free energy due to reduction in surface area is the ma...

In this study, synchrotron radiation computed tomography was applied to investigate the mechanisms of titanium powder microwave sintering in situ. On the basis of reconstructed images, we observed that the sintering described in this study differs from conventional sintering in terms of particle smoothing, rounding, and short-term growth. Contacted particles were also isolated. The kinetic curv...

A new synthetic methodology to produce polymer-AgNP composite microparticles using scCO 2 is presented. These microparticle possessed long-lived antimicrobial activity and were tested for compatibility in the Laser Sintering 3D printing process.

Until 2000 almost all research in the microwave sintering area was confined to non-metallic materials. However, after the first report by Penn State in 1999 on full sintering of steel powders in microwave, now in the last few years there has been increasing interest in applying microwave energy for processing of variety of metallic materials. The present study is an extension of this work and r...

The microstructure evolution of Fe-17 wt. % Cr-12 wt. % Ni-2 wt. % Mo stainless steel fiber felts during the fast sintering process was investigated by the synchrotron radiation X-ray computed tomography technique. The equation of dynamics of stable inter-fiber neck growth was established for the first time based on the geometry model of sintering joints of two fibers and Kucsynski’s two-sphere...

Purpose This in vitro study aimed at ascertaining the retention forces for telescopic crowns fabricated with Selective Laser Manufacturing (SLM) and Sintering (SLS) additive technologies, Computer Aided Design – (CAD–CAM) subtractive technology, by using suitable materials each.

Laser micro sintering (LMS) is a process of manufacturing microscale parts and/or features by laser sintering. Small powder particles (e.g., on the order ~1 ?m) are often used for good spatial resolutions. Besides, pulsed lasers employed due to related potential advantages. For mechanical properties, laser-based LMS typically desires high densification sintered material, which is, however, more...