Next Article in Journal
Influence of Interface Proximity on Precipitation Thermodynamics
Previous Article in Journal
On the Recovery and Fatigue Life Extension of Stainless Steel 316 Metals by Means of Recovery Heat Treatment
 
 
Article

Effect of Four Manufacturing Techniques (Casting, Laser Directed Energy Deposition, Milling and Selective Laser Melting) on Microstructural, Mechanical and Electrochemical Properties of Co-Cr Dental Alloys, Before and After PFM Firing Process

1
LaserOn Research Group, School of Engineering, University of Vigo, Lagoas-Marcosende, E-36310 Vigo, Spain
2
Corus-Fegoba, C/San Jorge 18, E-15002 A Coruña, Spain
3
School of Dentistry, Universitat Internacional de Catalunya, E-08195 Barcelona, Spain
4
Galicia Sur Health Research Institute (IIS Galicia Sur). SERGAS-UVIGO, E-36310 Vigo, Spain
5
Materials Engineering, Applied Mechanics and Construction Department, University of Vigo, EEI, Lagoas-Marcosende, E-36310 Vigo, Spain
*
Author to whom correspondence should be addressed.
Metals 2020, 10(10), 1291; https://doi.org/10.3390/met10101291
Received: 18 August 2020 / Revised: 21 September 2020 / Accepted: 25 September 2020 / Published: 27 September 2020
(This article belongs to the Section Additive Manufacturing)
The objective of this study was to compare four manufacturing processes of Co-Cr dental alloys: casting (CAST), computer aided design/computer aided manufacturing (CAD/CAM) milling (MILL), selective laser melting (SLM), and laser directed energy deposition (LDED). Comparison included microstructural, mechanical, and electrochemical analyses. Half of the samples obtained were heat treated to simulate the porcelain fused to metal (PFM) firing process, and the metal real state in an oral environment. Co-Cr dental alloys manufactured via casting, LDED, milling, and SLM techniques presented evident differences in their mechanical properties. However, their electrochemical performances were similar, with high resistance to corrosion in artificial saliva, in both aerated and deaerated media (corrosion rate under 4 microns per year). LDED and milling materials showed the highest modulus of toughness, and gave improved results in comparison with CAST and SLM techniques (p < 0.05). The LDED process could be implemented in the manufacturing of the restorative dental industry, with a high overall performance, competing directly with the best quality techniques, and reducing their disadvantages. View Full-Text
Keywords: Co-Cr alloy; laser directed energy deposition (LDED); microstructure; mechanical properties; corrosion behavior; additive manufacturing; dental restorations; casting; milling; selective laser melting (SLM) Co-Cr alloy; laser directed energy deposition (LDED); microstructure; mechanical properties; corrosion behavior; additive manufacturing; dental restorations; casting; milling; selective laser melting (SLM)
Show Figures

Figure 1

MDPI and ACS Style

Barro, Ó.; Arias-González, F.; Lusquiños, F.; Comesaña, R.; del Val, J.; Riveiro, A.; Badaoui, A.; Gómez-Baño, F.; Pou, J. Effect of Four Manufacturing Techniques (Casting, Laser Directed Energy Deposition, Milling and Selective Laser Melting) on Microstructural, Mechanical and Electrochemical Properties of Co-Cr Dental Alloys, Before and After PFM Firing Process. Metals 2020, 10, 1291. https://doi.org/10.3390/met10101291

AMA Style

Barro Ó, Arias-González F, Lusquiños F, Comesaña R, del Val J, Riveiro A, Badaoui A, Gómez-Baño F, Pou J. Effect of Four Manufacturing Techniques (Casting, Laser Directed Energy Deposition, Milling and Selective Laser Melting) on Microstructural, Mechanical and Electrochemical Properties of Co-Cr Dental Alloys, Before and After PFM Firing Process. Metals. 2020; 10(10):1291. https://doi.org/10.3390/met10101291

Chicago/Turabian Style

Barro, Óscar, Felipe Arias-González, Fernando Lusquiños, Rafael Comesaña, Jesús del Val, Antonio Riveiro, Aida Badaoui, Félix Gómez-Baño, and Juan Pou. 2020. "Effect of Four Manufacturing Techniques (Casting, Laser Directed Energy Deposition, Milling and Selective Laser Melting) on Microstructural, Mechanical and Electrochemical Properties of Co-Cr Dental Alloys, Before and After PFM Firing Process" Metals 10, no. 10: 1291. https://doi.org/10.3390/met10101291

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop