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Pana I, Parau AC, Dinu M, Vitelaru C, Vranceanu DM, Lindner T, Vladescu (Dragomir) A. Structural, mechanical, wear and anticorrosive properties of CrSiCN coatings used for industrial woodworking applications. Heliyon 2024; 10:e29496. [PMID: 38681590 PMCID: PMC11046108 DOI: 10.1016/j.heliyon.2024.e29496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 03/22/2024] [Accepted: 04/09/2024] [Indexed: 05/01/2024] Open
Abstract
The woodworking applications are a fast-growing field that aims to create advanced coatings with superior wear resistance, reduced friction, and robust corrosion protection. Chromium silicon carbonitride (CrSiCN) coatings have emerged as a promising solution that offers a unique combination of properties ideal for various industrial applications. The C/N ratio significantly influences the coatings' mechanical and tribological properties. By optimizing the C/N ratio, this research aims to reveal new insights for CrSiCN coatings, enhancing their application in environments that require durability, efficiency, and longevity. In this paper, the effect of the C/N ratio on the structural, mechanical, and corrosion resistance of CrSiCN coatings deposited by cathodic arc evaporation on different steel substrates was studied. The main purpose was to enhance the mechanical and anticorrosion properties of the CrSiCN coatings and to select the optimum parameters for the deposition of layers with superior properties. The results showed that the final properties can be tailored by choosing specific deposition conditions. In this case, the C/N ratio proved to be critical since coatings with higher carbon content presented enhanced corrosion resistance, being able to withstand operating conditions similar to real-life.
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Affiliation(s)
- Iulian Pana
- National Institute of Research and Development for Optoelectronics - INOE 2000, Department for Advanced Surface Processing and Analysis by Vacuum Technologies, 409 Atomistilor St., RO77125, Magurele, Romania
| | - Anca Constantina Parau
- National Institute of Research and Development for Optoelectronics - INOE 2000, Department for Advanced Surface Processing and Analysis by Vacuum Technologies, 409 Atomistilor St., RO77125, Magurele, Romania
| | - Mihaela Dinu
- National Institute of Research and Development for Optoelectronics - INOE 2000, Department for Advanced Surface Processing and Analysis by Vacuum Technologies, 409 Atomistilor St., RO77125, Magurele, Romania
| | - Catalin Vitelaru
- National Institute of Research and Development for Optoelectronics - INOE 2000, Department for Advanced Surface Processing and Analysis by Vacuum Technologies, 409 Atomistilor St., RO77125, Magurele, Romania
| | - Diana Maria Vranceanu
- Faculty of Materials and Science Engineering, University Politehnica of Bucharest, 313, Spl. Independentei, 060042 Bucharest, Romania
- Drugon International SRL, 2 Tractorului St., Constanta, Romania
| | - Thomas Lindner
- Chemnitz University of Technology, Institute of Materials Science and Engineering, Chair of Materials and Surface Engineering, D-09107 Chemnitz, Germany
| | - Alina Vladescu (Dragomir)
- National Institute of Research and Development for Optoelectronics - INOE 2000, Department for Advanced Surface Processing and Analysis by Vacuum Technologies, 409 Atomistilor St., RO77125, Magurele, Romania
- Research School of Chemistry & Applied Biomedical Sciences, National Research Tomsk Polytechnic University, Tomsk, 634050, Russia
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Fischer P, Barbu HM, Fischer CAI, Pantea M, Baciu F, Vranceanu DM, Cotrut CM, Spinu TC. Bending Fracture of Different Zirconia-Based Bioceramics for Dental Applications: A Comparative Study. Materials (Basel) 2021; 14:ma14226887. [PMID: 34832293 PMCID: PMC8621405 DOI: 10.3390/ma14226887] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 11/08/2021] [Accepted: 11/10/2021] [Indexed: 01/09/2023]
Abstract
The fabrication of fixed dental prostheses using aesthetic materials has become routine in today’s dentistry. In the present study, three-unit full zirconia fixed prosthetic restorations obtained by computer-aided design/computer-aided manufacturing (CAD/CAM) technology were tested by bending trials. The prostheses were intended to replace the first mandibular left molar and were manufactured from four different types of zirconia bioceramics (KatanaTM Zirconia HTML and KatanaTM Zirconia STML/Kuraray Noritake Dental Inc.; NOVAZir® Fusion float® ml/NOVADENT/Dentaltechnik; and 3D PRO Zirconia/Bloomden Bioceramics). In total, sixteen samples were manufactured—four samples per zirconia material. Additionally, the morphology, grain size area distribution, and elemental composition were analyzed in parallelepiped samples made from the selected types of zirconia in three different areas, noted as the upper, middle, and lower areas. The scanning electron microscope (SEM) analysis highlighted that the grain size area varies with respect to the researched area and the type of material. Defects such as microcracks and pores were also noted to a smaller extent. In terms of grain size area, it was observed that most of the particles in all samples were under 0.5 μm2, while the chemical composition of the investigated materials did not vary significantly. The results obtained after performing the bending tests showed that a zirconia material with fewer structural defects and an increased percentage of grain size area under 0.5 µm2, ranging from ~44% in the upper area to ~74% in the lower area, exhibited enhanced mechanical behavior. Overall, the resulting values of all investigated parameters confirm that the tested materials are suitable for clinical use.
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Affiliation(s)
- Peter Fischer
- Oral Implantology Department, Titu Maiorescu University, 67A Gh. Petrascu Street, 040441 Bucharest, Romania; (P.F.); (H.M.B.)
| | - Horia Mihail Barbu
- Oral Implantology Department, Titu Maiorescu University, 67A Gh. Petrascu Street, 040441 Bucharest, Romania; (P.F.); (H.M.B.)
| | - Caroline Adela Ingrid Fischer
- Doctoral School, Faculty of Dental Medicine, Titu Maiorescu University, 67A Gh. Petrascu Street, 040441 Bucharest, Romania;
| | - Mihaela Pantea
- Department of Fixed Prosthodontics and Occlusology, Faculty of Dental Medicine, Carol Davila University of Medicine and Pharmacy, 17-23 Plevnei Street, 010221 Bucharest, Romania; (M.P.); (T.C.S.)
| | - Florin Baciu
- Department of Strength of Materials, Faculty of Industrial Engineering and Robotics, University Politehnica of Bucharest, 313 Splaiul Independentei, 060042 Bucharest, Romania;
| | - Diana Maria Vranceanu
- Department of Metallic Materials Science, Physical Metallurgy, Faculty of Materials Science and Engineering, University Politehnica of Bucharest, 313 Splaiul Independentei, 060042 Bucharest, Romania
- Correspondence: (D.M.V.); (C.M.C.); Tel.: +40-(0)21-316-9563 (D.M.V. & C.M.C.)
| | - Cosmin Mihai Cotrut
- Department of Metallic Materials Science, Physical Metallurgy, Faculty of Materials Science and Engineering, University Politehnica of Bucharest, 313 Splaiul Independentei, 060042 Bucharest, Romania
- Correspondence: (D.M.V.); (C.M.C.); Tel.: +40-(0)21-316-9563 (D.M.V. & C.M.C.)
| | - Tudor Claudiu Spinu
- Department of Fixed Prosthodontics and Occlusology, Faculty of Dental Medicine, Carol Davila University of Medicine and Pharmacy, 17-23 Plevnei Street, 010221 Bucharest, Romania; (M.P.); (T.C.S.)
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Bechir F, Bataga SM, Ungureanu E, Vranceanu DM, Pacurar M, Bechir ES, Cotrut CM. Experimental Study Regarding the Behavior at Different pH of Two Types of Co-Cr Alloys Used for Prosthetic Restorations. Materials (Basel) 2021; 14:ma14164635. [PMID: 34443157 PMCID: PMC8402223 DOI: 10.3390/ma14164635] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 08/11/2021] [Accepted: 08/13/2021] [Indexed: 12/12/2022]
Abstract
Cobalt-chromium (Co-Cr) alloys are widely utilized in dentistry. The salivary pH is a significant factor, which affects the characteristics and the behavior of dental alloys through corrosion. This study aimed to evaluate the corrosion behavior in artificial saliva with different pH values (3, 5.7, and 7.6) of two commercial Co-Cr dental alloys manufactured by casting and by milling. Corrosion resistance was determined by the polarization resistance technique, and the tests were carried out at 37 ± 1 °C, in Carter Brugirard artificial saliva. After the electrochemical parameters, it can be stated that the cast Co-Cr alloy has the lowest corrosion current density, the highest polarization resistance, and the lowest speed of corrosion in artificial saliva with pH = 7.6. In the case of milled Co-Cr alloy, the same behavior was observed, but in artificial saliva with pH = 5.7, it recorded the most electropositive values of open circuit potential and corrosion potential. Although both cast and milled Co-Cr alloys presented a poorer corrosion resistance in artificial saliva with a more acidic pH value, the milled Co-Cr alloy had better corrosion behavior, making this alloy a better option for the prosthetic treatment of patients suffering from GERD.
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Affiliation(s)
- Farah Bechir
- Faculty of Dental Medicine, George Emil Palade University of Medicine, Pharmacy, Science, and Technology of Targu Mures, 38 Gh. Marinescu Str., 540142 Targu Mures, Romania; (F.B.); (M.P.)
| | - Simona Maria Bataga
- Faculty of Medicine, George Emil Palade University of Medicine, Pharmacy, Science, and Technology of Targu Mures, 38 Gh. Marinescu Str., 540142 Targu Mures, Romania;
| | - Elena Ungureanu
- Faculty of Materials Science and Engineering, Politehnica University of Bucharest, 313 Splaiul Independentei, 060042 Bucharest, Romania; (E.U.); (D.M.V.); (C.M.C.)
| | - Diana Maria Vranceanu
- Faculty of Materials Science and Engineering, Politehnica University of Bucharest, 313 Splaiul Independentei, 060042 Bucharest, Romania; (E.U.); (D.M.V.); (C.M.C.)
| | - Mariana Pacurar
- Faculty of Dental Medicine, George Emil Palade University of Medicine, Pharmacy, Science, and Technology of Targu Mures, 38 Gh. Marinescu Str., 540142 Targu Mures, Romania; (F.B.); (M.P.)
| | - Edwin Sever Bechir
- Faculty of Dental Medicine, George Emil Palade University of Medicine, Pharmacy, Science, and Technology of Targu Mures, 38 Gh. Marinescu Str., 540142 Targu Mures, Romania; (F.B.); (M.P.)
- Correspondence: ; Tel.: +40-72-339-6969
| | - Cosmin Mihai Cotrut
- Faculty of Materials Science and Engineering, Politehnica University of Bucharest, 313 Splaiul Independentei, 060042 Bucharest, Romania; (E.U.); (D.M.V.); (C.M.C.)
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