20.500.12556/DiRROS-15878 Comparison of the corrosion properties of CoCrMo dental alloys in artificial saliva Primerjava korozijskih lastnosti CoCrMo dentalnih zlitin v umetni slini CoCrMo alloys are known for their biocompatible properties, which, together with their favorable mechanical properties, mean they can be efficiently used in dentistry. With the development of selective laser melting for the fabrication of 3D-printed ob - jects, interest in the corrosion properties of this alloy has risen in the field of prosthodontics. In the study, CoCrMoW dental al - loys were studied in artificial saliva at body temperature, i.e., 37 °C. Different forms of CoCrMoW alloy were selected: a refer - ence sample, i.e., original material as received from the supplier, a cast sample acquired from an ordinary procedure in a dental laboratory, and two 3D-printed samples made from CoCrMoW powder using the selective laser melting (SLM) method. Electro - chemical, spectroscopic and hardness measurements were conducted. It was shown that the reference and cast samples have similar microstructural and electrochemical properties, while the electrochemical properties of the 3D-printed samples differ, most probably due to the effect of the higher micro porosity and chemical composition of the alloys. CoCrMo-zlitine so znane po svojih biokompatibilnih lastnostih, ki jih zaradi ugodnih mehanskih lastnosti vse pogosteje uporabljamo v zobozdravstvu. Z razvojem selektivnega laserskega taljenja (SLT) se je zanimanje za izdelavo 3D tiskanih predmetov in preučevanje korozijskih lastnosti teh zlitin povečalo tudi v stomatološki protetiki. V študiji je bila preučevana CoCrMoW-zlitina v umetni slini pri telesni temperaturi 37 °C. Izbrane so bile različne oblike zlitin CoCrMoW: originalni referenčni vzorec dostavljen od dobavitelja, kovinski ulitek, pridobljen z ustaljenim postopkom v zobotehničnem laboratoriju in dva 3D vzorca iz prahu CoCrMoW, ki sta bila izdelana z uporabo metode selektivnega laserskega taljenja. Izvedene so bile elektrokemijske in metalografske preiskave z merjenjem trdote. Ugotovljeno je bilo, da imata referenčni in ulit material podobne mikrostrukturne in elektrokemijske lastnosti, medtem ko imajo vzorci 3D tiska različne elektrokemijske lastnosti, najverjetneje zaradi učinka večje mikro poroznosti in kemijske sestave zlitin. CoCrMo dentalne zlitine umetna slina aditivne tehnologije precizijsko ulivanje korozija CoCrMo dental alloy artificial saliva additive technology precision casting corrosion true false true Inštitut za kovinske materiale in tehnologije Slovenski jezik Angleški jezik © MATERIALI IN TEHNOLOGIJE Neznano 2022-12-02 10:05:56 2022-12-02 10:05:57 2023-07-18 03:35:19 0000-00-00 00:00:00 2021 0 0 Nasl. v angl. in slov., besedilo v angl.; str. 819-824 št. 6 Letn. 55 nov.-dec. 2021 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2021-12-10 620.193:544.6:616.314:669.018.8:66.017 1580-2949 10.17222/mit.2021.283 89933571 https://mater-tehnol.si/index.php/MatTech/article/view/283 1 2e2a0094-7218-11ed-a69a-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=20995 RAZ_Kosec_Tadeja_2021.pdf RAZ_Kosec_Tadeja_2021.pdf 1 039F2D00CC97DA4E68FCAD0F92859337 f5f5ab11ec1e2d4e184e266075328ab5c1a763dcfc4ef0493049edd4dfb784f1 f8edd8a4-2459-11ee-8cc8-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=22673 Zavod za gradbeništvo Slovenije 0 0 0