20.500.12556/DiRROS-15859 Estimation of the corrosion properties for titanium dental alloys produced by SLM Ocena korozijskih lastnosti titanovih dentalnihzlitin, izdelanih s SLM postopkom Titanium alloys are known for their excellent biocompatible properties. The development of additive-manufacturing technologies has increased the interest in the use of Ti-6Al-4V, produced by selective laser melting (SLM) method, also in dentistry, i.e., prosthodontics and orthodontics. In the present paper, the effect of laser printing parameters in the selective laser melting (SLM) process on the porosity and corrosion behavior of Ti-6Al-4V dental alloy was metallographically and electrochemically studied. All the tests were performed in artificial saliva at 37 °C. Different forms of Ti-6Al-4V alloy were selected: a reference sample, i.e., pre-fabricated milling disc in wrought condition and four different 3D-printed samples made from Ti-6Al-4V powder using the SLM method, one being heat treated. Electrochemical, spectroscopic and hardness measurements were employed in the study. It was shown that the SLM-produced Ti-6Al-4V samples with different printing parameters have similar microstructural and electrochemical properties, while the electrochemical properties of a reference and thermally treated 3D-printed sample were different, most probably due to the change in the microstructure of the alloys. The corrosion properties were related to the microstructural properties as well as to the pore density. Titanove zlitine so znane po odličnih biokompatibilnih lastnostih. Razvoj aditivnih tehnologij je povečal zanimanje za uporabo Ti-6Al-4V, proizvedenega z metodo selektivnega laserskega taljenja (SLM) v zobozdravstvu - tako v protetiki kot v ortodontiji. V prispevku smo metalografsko in elektrokemijsko proučili vpliv parametrov laserskega tiska pri procesu selektivnega laserskega taljenja (SLM) na poroznost in korozijsko obnašanje dentalne zlitine Ti-6Al-4V. Vsi testi so bili opravljeni v umetni slini pri telesni temperaturi 37 °C. Izbrane so bile različne oblike zlitine Ti-6Al-4V: referenčni vzorec (v obliki diska za rezkanje v kovanem stanju) in štirje različni 3D natisnjeni vzorci iz prahu Ti-6Al-4V po metodi selektivnega laserskega taljenja (SLM), pri čemer je eden toplotno obdelan. Pri raziskavi so bile uporabljene elektrokemijske, spektroskopske metode in meritve trdote. Pokazalo se je, da imajo vzorci Ti-6Al-4V, izdelani s postopkom SLM, z različnimi parametri, podobne mikrostrukturne in elektrokemijske lastnosti, medtem ko so bile elektrokemijske lastnosti referenčnega in termično obdelanega 3D natisnjenega vzorca različne, najverjetneje zaradi različne mikrostrukture te zlitine. Korozijske lastnosti so bile povezane z mikrostrukturnimi lastnostmi, pa tudi z gostoto por. Ti-6Al-4V dental alloys artificial saliva selective laser melting corrosion Ti-6Al-4V dentalne zlitine umetna slina selektivno lasersko taljenje korozija true false true Inštitut za kovinske materiale in tehnologije Angleški jezik Slovenski jezik © MATERIALI IN TEHNOLOGIJE Neznano 2022-12-01 09:12:08 2023-05-31 10:52:10 2023-06-15 09:51:58 0000-00-00 00:00:00 2022 0 0 Nasl. v angl. in slov., besedilo v angl.; str. 429-435 št. 4 Letn. 56 jul.-avg. 2022 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2022-08-17 661.882:616.314 1580-2949 10.17222/mit.2022.519 118977795 https://mater-tehnol.si/index.php/MatTech/article/view/519/174 1 a74f8c76-7147-11ed-a69a-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=20976 RAZ_Kosec_Tadeja_2022.pdf RAZ_Kosec_Tadeja_2022.pdf 1 30EFF1A71291151C30CA8111448771E2 f6d9c4204b9ea201a3a323dda60fa5e2a14ac1100d67146f27753136d6910f59 e88c42bb-e405-11ed-a314-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=22216 Zavod za gradbeništvo Slovenije 0 0 0