“…A scientific team from the Frantsevich Institute for Problems of Materials Science (IPMS) led by A.V. Ragulya (now Academician of the National Academy of Sciences of Ukraine, IPMS Deputy Director) conducted research on selective laser sintering (SLS) of ceramic powders produced from refractory compounds [ 3 , 4 ]. The researchers used an SLS machine that had the following components: an LTN-103 YAG laser with a maximum laser power of 250 W and an output laser beam diameter of 6 mm, a target movement control system (including a computer, a coordinate unit, and X and Y mechanical drives), and a target with a system for depositing powder layers.…”
Section: Revisiting the History Of Additive Manufacturing Development...mentioning
confidence: 99%
“…Unlike FDM, the SLS process does not require that additional support structures are arranged for overhanging areas because they remain surrounded by the loose powder. A low-melting component (commonly nylon or polyamide) is currently used in SLS to bind together more refractory particles in a layer, while the buildup of 3D parts examined in [ 3 , 4 ] is called SLM (selective laser melting) or LPBF (laser powder bed fusion). Fig.…”
Section: Revisiting the History Of Additive Manufacturing Development...mentioning
An overview of additive manufacturing techniques in Ukraine from the end of the last century to 2021 is presented. The current state of 3D printing in Ukraine was analyzed in terms of new developments (startups), research areas, and direct implementation of additive manufacturing techniques. The main scientific and research teams that were actively engaged in the development and implementation of additive manufacturing techniques in Ukraine since the end of the 1990s were addressed. They include those involved in research of selective laser sintering for ceramic powders produced from refractory ZrO
2
–TiO
2
and TiN–TiB
2
compounds conducted at the Frantsevich Institute for Problems of Materials Science, National Academy of Sciences of Ukraine, and research intended to produce 3D parts by fused deposition of metals or alloys called xBeam 3D Metal Printing conducted at the Paton Electric Welding Institute, National Academy of Sciences of Ukraine. This technique found its commercial implementation in the Chervona Hvilya PJSC startup. The paper discusses the main trends in the development of new equipment for 3D printing with ceramics, polymer/ceramic materials, and metals and alloys, as well as experiments combining different materials to achieve new properties. The latest experiments on the shape of materials are presented. They involve the formation of lattice structures that not only reduce the weight of parts but also impart properties that are comparable to those of dense materials. The main attention is paid to the overview of up-to-date capabilities and prospects for the use of additive manufacturing techniques and materials in national materials science. Attention is also focused on prospects for producing parts of complex shape for various functional purposes from ceramics, metals, and associated composites.
“…A scientific team from the Frantsevich Institute for Problems of Materials Science (IPMS) led by A.V. Ragulya (now Academician of the National Academy of Sciences of Ukraine, IPMS Deputy Director) conducted research on selective laser sintering (SLS) of ceramic powders produced from refractory compounds [ 3 , 4 ]. The researchers used an SLS machine that had the following components: an LTN-103 YAG laser with a maximum laser power of 250 W and an output laser beam diameter of 6 mm, a target movement control system (including a computer, a coordinate unit, and X and Y mechanical drives), and a target with a system for depositing powder layers.…”
Section: Revisiting the History Of Additive Manufacturing Development...mentioning
confidence: 99%
“…Unlike FDM, the SLS process does not require that additional support structures are arranged for overhanging areas because they remain surrounded by the loose powder. A low-melting component (commonly nylon or polyamide) is currently used in SLS to bind together more refractory particles in a layer, while the buildup of 3D parts examined in [ 3 , 4 ] is called SLM (selective laser melting) or LPBF (laser powder bed fusion). Fig.…”
Section: Revisiting the History Of Additive Manufacturing Development...mentioning
An overview of additive manufacturing techniques in Ukraine from the end of the last century to 2021 is presented. The current state of 3D printing in Ukraine was analyzed in terms of new developments (startups), research areas, and direct implementation of additive manufacturing techniques. The main scientific and research teams that were actively engaged in the development and implementation of additive manufacturing techniques in Ukraine since the end of the 1990s were addressed. They include those involved in research of selective laser sintering for ceramic powders produced from refractory ZrO
2
–TiO
2
and TiN–TiB
2
compounds conducted at the Frantsevich Institute for Problems of Materials Science, National Academy of Sciences of Ukraine, and research intended to produce 3D parts by fused deposition of metals or alloys called xBeam 3D Metal Printing conducted at the Paton Electric Welding Institute, National Academy of Sciences of Ukraine. This technique found its commercial implementation in the Chervona Hvilya PJSC startup. The paper discusses the main trends in the development of new equipment for 3D printing with ceramics, polymer/ceramic materials, and metals and alloys, as well as experiments combining different materials to achieve new properties. The latest experiments on the shape of materials are presented. They involve the formation of lattice structures that not only reduce the weight of parts but also impart properties that are comparable to those of dense materials. The main attention is paid to the overview of up-to-date capabilities and prospects for the use of additive manufacturing techniques and materials in national materials science. Attention is also focused on prospects for producing parts of complex shape for various functional purposes from ceramics, metals, and associated composites.
“…Under a short laser-irradiation of the powder bed, the particle bonding and sintering must be rapid and thus solid-phase sintering, which requires a long diffusion time, does not seem to be feasible in selective laser sintering. 25,26 Melting/solidification and liquid-phase sintering are the feasible mechanisms for laser densification of alumina powder beds. In practice, laser sintering of alumina powder beds may be considered in three stages 27 : (1) initial sintering up to a eutectic formation of liquid-phase.…”
Section: Laser Densification Mechanism Of Alumina Powder Bedmentioning
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
