20.500.12556/DKUM-88006 Study of ▫$Ni/Y_2O_3/polylactic$▫ acid composite This study demonstrates the successful synthesis of Ni/Y2O3 nanocomposite particles through the application of ultrasound-assisted precipitation using the ultrasonic spray pyrolysis technique. They were collected in a water suspension with polyvinylpyrrolidone (PVP) as the stabiliser. The presence of the Y2O3 core and Ni shell was confirmed with transmission electron microscopy (TEM) and with electron diffraction. The TEM observations revealed the formation of round particles with an average diameter of 466 nm, while the lattice parameter on the Ni particle’s surface was measured to be 0.343 nm. The Ni/Y2O3 nanocomposite particle suspensions were lyophilized, to obtain a dried material that was suitable for embedding into a polylactic acid (PLA) matrix. The resulting PLA/Ni/Y2O3 composite material was extruded, and the injection was moulded successfully. Flexural testing of PLA/Ni/Y2O3 showed a slight average decrease (8.55%) in flexural strength and a small decrease from 3.7 to 3.3% strain at the break, when compared to the base PLA. These findings demonstrate the potential for utilising Ni/Y2O3 nanocomposite particles in injection moulding applications and warrant further exploration of their properties and new applications in various fields. ultrasound spray pyrolysis Ni/Y2O3 lyophilization PLA extrusion injection moulding ultrazvočna razpršilna piroliza liofilizacija sušenje z zamrzovanjem ekstrudiranje injekcijsko brizganje true false true MDPI Angleški jezik Slovenski jezik https://www.mdpi.com/journal/materials Članek v reviji 2024-04-05 09:32:23 2024-04-05 09:32:24 2024-04-06 04:20:29 0000-00-00 00:00:00 2023 0 0 15 str. iss. 14, [article no.] 5162 Vol. 16 July 2023 0000-00-00 Zaloznikova Objavljeno NiDoloceno 2023-06-24 2023-07-21 2023-07-22 669.2:536 160771075 10.3390/ma16145162 1996-1944 materials-16-05162.pdf materials-16-05162.pdf 1 E57BBA7DDC12FF19EB56CAC198BE97AD 333fd883617787a21bf9e2afbebc6549866c7976e95dd1f0db9b04e2d78bde90 0ecf0c34-f320-11ee-9068-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=177933 https://www.mdpi.com/1996-1944/16/14/5162 0 15e602a7-f320-11ee-9068-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=177934 Fakulteta za strojništvo 0 0 0