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Title:Comparative study of the microstructure and properties of cast-fabricated and 3D-printed laser-sintered Co–Cr alloys for removable partial denture frameworks
Authors:ID Stamenković, Dejan (Author)
ID Popović, Miljana (Author)
ID Rudolf, Rebeka (Author)
ID Zrilić, Milorad (Author)
ID Raić, Karlo (Author)
ID Obradović-Đuričić, Kosovka (Author)
ID Stamenković, Dragoslav (Author)
Files:.pdf materials-16-03267.pdf (16,55 MB)
MD5: AA1D3D4D636BF237CDB9011C9B2A8469
 
URL https://www.mdpi.com/1996-1944/16/8/3267
 
Language:English
Work type:Article
Typology:1.01 - Original Scientific Article
Organization:FS - Faculty of Mechanical Engineering
Abstract:Since additive technologies in dentistry are gradually replacing metal casting technology, it is necessary to evaluate new dental constructions intended for the development of removable partial denture frameworks. The aim of this research was to evaluate the microstructure and mechanical properties of 3D-printed, laser-melted and -sintered Co–Cr alloys, and perform a comparative study with Co–Cr castings for the same dental purposes. The experiments were divided into two groups. The first group consisted of samples produced by conventional casting of the Co–Cr alloy. The second group consisted of 3D-printed, laser-melted and -sintered specimens produced from a Co–Cr alloy powder divided into three subgroups, depending on the technological parameters chosen for manufacturing (angle, location and heat treatment). Examination of the microstructure was carried out by classical metallographic sample preparation, using optical microscopy and scanning electron microscopy with energy dispersive X-ray spectroscopy (EDX) analysis. A structural phase analysis was also performed by XRD. The mechanical properties were determined using a standard tensile test. The microstructure observation showed a dendritic character in the case of castings, while in the case of 3D-printed, laser-melted and -sintered Co–Cr alloys, the microstructure was typical for additive technologies. The XRD phase analysis confirmed the presence of Co–Cr phases (ε and γ). The results of the tensile test showed remarkably higher yield and tensile strength values and slightly lower elongation of the 3D-printed, laser-melted and -sintered samples than those produced by conventional casting.
Keywords:Co–Cr dental alloys, 3D printing, laser melting and sintering, casting, microstructure, mechanical properties, characterization
Publication status:Published
Publication version:Version of Record
Submitted for review:29.03.2023
Article acceptance date:19.04.2023
Publication date:21.04.2023
Publisher:MDPI
Year of publishing:2023
Number of pages:13 str.
Numbering:Vol. 16, iss. 8, [article no.] 3267
PID:20.500.12556/DKUM-84163 New window
UDC:621.74:004.8
ISSN on article:1996-1944
COBISS.SI-ID:150017283 New window
DOI:10.3390/ma16083267 New window
Publication date in DKUM:21.04.2023
Views:459
Downloads:45
Metadata:XML DC-XML DC-RDF
Categories:Misc.
:
STAMENKOVIĆ, Dejan, POPOVIĆ, Miljana, RUDOLF, Rebeka, ZRILIĆ, Milorad, RAIĆ, Karlo, OBRADOVIĆ-ĐURIČIĆ, Kosovka and STAMENKOVIĆ, Dragoslav, 2023, Comparative study of the microstructure and properties of cast-fabricated and 3D-printed laser-sintered Co–Cr alloys for removable partial denture frameworks. Materials [online]. 2023. Vol. 16, no. 8,  3267. [Accessed 31 March 2025]. DOI 10.3390/ma16083267. Retrieved from: https://dk.um.si/IzpisGradiva.php?lang=eng&id=84163
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Record is a part of a journal

Title:Materials
Shortened title:Materials
Publisher:MDPI
ISSN:1996-1944
COBISS.SI-ID:33588485 New window

Document is financed by a project

Funder:ARRS - Slovenian Research Agency
Project number:P2-0120 (B) - Technologies of metastable materials
Name:Tehnologije metastabilnih materialov

Licences

License:CC BY 4.0, Creative Commons Attribution 4.0 International
Link:http://creativecommons.org/licenses/by/4.0/
Description:This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.

Secondary language

Language:Slovenian
Keywords:Co–Cr dentalne zlitine, 3D tiskanje, litje, mikrostruktura, lasersko pretaljevanje, lasersko sintranje, mehanske lastnosti, karakterizacija


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