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Naik GM, Sharma P, Anne G, Pittala RK, Kumar R, Satapathi GS, Kumar CS, Fernandes F. Improvement in Corrosion Performance of ECAPed AZ80/91 Mg Alloys Using SS316 HVOF Coating. Materials (Basel) 2023; 16:6651. [PMID: 37895635 PMCID: PMC10608680 DOI: 10.3390/ma16206651] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 09/29/2023] [Accepted: 10/07/2023] [Indexed: 10/29/2023]
Abstract
Mg AZ80/91 alloys are highly popular due to their lightweight, high strength-to-weight ratio, and good machinability. However, their moderate mechanical properties and corrosion resistance have limited their use in the automotive, aerospace, and defense sectors. This study primarily aims to enhance the mechanical performance and corrosion resistance of Mg AZ80/91 alloys, making them more suitable for applications in the aerospace and automotive industries. Firstly, equal-channel angular pressing (ECAP) of Mg AZ80/91 alloys has been attempted to improve their mechanical properties. Secondly, a high-velocity oxy-fuel (HVOF) coating of SS316 was applied over the Mg AZ80/91 substrate to enhance its corrosion resistance. In the second step, an HVOF coating of SS316 is applied over the Mg AZ80/91 substrate for better corrosion resistance. The experimental findings demonstrate that the application of an SS316 coating on the ECAP-4P AZ80/91 Mg alloy substrate results in a uniform and dense layer with an average thickness of approximately 80 ± 5 µm. The HVOF-based SS316 coating on 4P-ECAP leads to a noteworthy enhancement in microhardness and a reduction in the corrosion rate, especially in a NaCl solution (3.5 wt.%). This improvement holds great promise for producing reliable, long-lasting, and resilient automotive, aerospace, and defense components. The application of an HVOF-based SS316 coating onto the AZ80 Mg alloy, which had not undergone ECAP treatment, led to a substantial enhancement in corrosion resistance. This resulted in a notable decrease in the corrosion current density, reducing it from 0.297 mA/cm2 to 0.10 µA/cm2.
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Affiliation(s)
- Gajanan M. Naik
- Department Mechanical Engineering, RV Institute of Technology and Management, Bengaluru 5680076, Karnataka, India;
| | - Priyaranjan Sharma
- Department of Mechanical Engineering, Koneru Lakshmaiah Education Foundation, Vijayawada 522502, Andhra Pradesh, India
| | - Gajanan Anne
- Department of Mechanical and Industrial Engineering, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India
| | - Raj Kumar Pittala
- Department of Mechanical Engineering, Koneru Lakshmaiah Education Foundation, Vijayawada 522502, Andhra Pradesh, India
| | - Rahul Kumar
- Department of Mechanical Engineering, School of Engineering and Technology, Sandip University, Nashik 422213, Maharashtra, India
| | - Gnane Swarnadh Satapathi
- Department of Electronics and Communication Engineering, A J Institute of Engineering and Technology, Mangaluru 575006, Karnataka, India
| | - Ch Sateesh Kumar
- CFAA-Aeronautics Advanced Manufacturing Center, University of the Basque Country (UPV/EHU), Biscay Science and Technology Park, 48170 Zamudio, Spain
- Department of Mechanical Engineering, University of the Basque Country, Escuela Superior de Ingenieros Alameda de Urquijo S/N, 48013 Bilbao, Spain
| | - Filipe Fernandes
- University of Coimbra, CEMMPRE, ARISE, Department of Mechanical Engineering, Rua Luís Reis Santos, 3030-788 Coimbra, Portugal;
- ISEP, Polytechnic of Porto, Rua Dr. António Bernardino de Almeida, 4249-015 Porto, Portugal
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Aurelie FV, Anne G, Olivier S, Marion L, Gabrielle DM, Geraldine G, Christophe L, David H, Sylvia G, Dominique B. 124 Impact on the surgical management of cataracts of the multidisciplinary management of an epidemic of endophthalmitis. BMJ Qual Saf 2010. [DOI: 10.1136/qshc.2010.041624.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Anne G, Thunder JM. “Now that Dr. Lejeune is Dead, who will Protect Me?” The Case for a Comprehensive Strategic Plan to Stop Assisted Suicide. Linacre Q 1997. [DOI: 10.1080/20508549.1999.11878391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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Gras C, Ba'da P, Peyron F, Anne G, Forestier R, Compain P. [A medical evaluation mission to the mountain tribes on the high plateaus of central Vietnam]. Med Trop (Mars) 1995; 55:381-384. [PMID: 8830225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
The Vietnamity Association and Association for Aid to Ethnic Minorities in Vietnam is sponsoring a health plan for the mountain tribes living on the high plateaux of central Vietnam in the Kontum region. Within this framework a team of doctors undertook a medical evaluation mission in several villages in the region. The purpose of this report is to describe observation made in the subjects who consulted on a voluntary basis without active screening. A total of 618 subjects including 400 children were examined. Fifty Blood smears and 12 direct stool examinations were performed. Otorhinolaryngologic, respiratory, parasitic, and digestive disorders due mainly to poor hygiene of the skin and teeth were the most frequent reasons for consultation. Management of malaria and tuberculosis are urgent problems. Several realistic proposals are made based on the diseases observed, the populations involved, and the facilities at the disposal of the commissioning associations.
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Affiliation(s)
- C Gras
- Service de Médecine Interne et de Pathologie Infectieuse et Tropicale, HIA Laveran, Marseille-Armées, France
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