Corrosion Behavior and Microhardness of a New B<sub>4</sub>C Ceramic Doped with 3% Volume High-Entropy Alloy in an Aggressive Environment
The aim of this paper is to study both the mechanical and chemical properties of a new material composed of B<sub>4</sub>C doped with 3% volume of CoCrFeNiMo HEA by the spark plasma sintering technique. Scanning electron microscopy and microhardness were used to characterize the composit...
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MDPI AG
2025-01-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/15/1/79 |
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| author | Alberto Daniel Rico-Cano Julia Claudia Mirza-Rosca Burak Cagri Ocak Gultekin Goller |
| author_facet | Alberto Daniel Rico-Cano Julia Claudia Mirza-Rosca Burak Cagri Ocak Gultekin Goller |
| author_sort | Alberto Daniel Rico-Cano |
| collection | DOAJ |
| description | The aim of this paper is to study both the mechanical and chemical properties of a new material composed of B<sub>4</sub>C doped with 3% volume of CoCrFeNiMo HEA by the spark plasma sintering technique. Scanning electron microscopy and microhardness were used to characterize the composite microstructure and hardness. Corrosion behavior was studied by corrosion potential, corrosion rate and electrochemical impedance spectroscopy, where the equivalent circuit was obtained, characterized by the presence of the Warburg element. The addition of HEA resulted in a more compact microstructure, filling pores and inhibiting ceramic grain growth. A microhardness statistical analysis revealed that the sample followed a normal distribution, which suggests that the sample has a homogeneous structure. The doped material exhibits excellent corrosion resistance in artificial seawater, where its chemical interaction occurs in two steps, with an important diffusional component. This study highlights the potential for use in environments where both corrosion resistance and mechanical strength are critical factors. |
| format | Article |
| id | doaj-art-1152e34a111f46c59d72bd3da89aee11 |
| institution | Kabale University |
| issn | 2075-4701 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj-art-1152e34a111f46c59d72bd3da89aee112025-01-24T13:41:37ZengMDPI AGMetals2075-47012025-01-011517910.3390/met15010079Corrosion Behavior and Microhardness of a New B<sub>4</sub>C Ceramic Doped with 3% Volume High-Entropy Alloy in an Aggressive EnvironmentAlberto Daniel Rico-Cano0Julia Claudia Mirza-Rosca1Burak Cagri Ocak2Gultekin Goller3Departament of Mechanical Engineering, University of Las Palmas de Gran Canaria, Campus Universitario Tafira, 35017 Las Palmas de Gran Canaria, SpainDepartament of Mechanical Engineering, University of Las Palmas de Gran Canaria, Campus Universitario Tafira, 35017 Las Palmas de Gran Canaria, SpainDepartment of Metallurgical and Materials Engineering, Istanbul Technical University, 34469 Maslak, Istanbul, TurkeyDepartment of Metallurgical and Materials Engineering, Istanbul Technical University, 34469 Maslak, Istanbul, TurkeyThe aim of this paper is to study both the mechanical and chemical properties of a new material composed of B<sub>4</sub>C doped with 3% volume of CoCrFeNiMo HEA by the spark plasma sintering technique. Scanning electron microscopy and microhardness were used to characterize the composite microstructure and hardness. Corrosion behavior was studied by corrosion potential, corrosion rate and electrochemical impedance spectroscopy, where the equivalent circuit was obtained, characterized by the presence of the Warburg element. The addition of HEA resulted in a more compact microstructure, filling pores and inhibiting ceramic grain growth. A microhardness statistical analysis revealed that the sample followed a normal distribution, which suggests that the sample has a homogeneous structure. The doped material exhibits excellent corrosion resistance in artificial seawater, where its chemical interaction occurs in two steps, with an important diffusional component. This study highlights the potential for use in environments where both corrosion resistance and mechanical strength are critical factors.https://www.mdpi.com/2075-4701/15/1/79ceramicHEAEIScorrosion behaviormicrohardnessSEM |
| spellingShingle | Alberto Daniel Rico-Cano Julia Claudia Mirza-Rosca Burak Cagri Ocak Gultekin Goller Corrosion Behavior and Microhardness of a New B<sub>4</sub>C Ceramic Doped with 3% Volume High-Entropy Alloy in an Aggressive Environment Metals ceramic HEA EIS corrosion behavior microhardness SEM |
| title | Corrosion Behavior and Microhardness of a New B<sub>4</sub>C Ceramic Doped with 3% Volume High-Entropy Alloy in an Aggressive Environment |
| title_full | Corrosion Behavior and Microhardness of a New B<sub>4</sub>C Ceramic Doped with 3% Volume High-Entropy Alloy in an Aggressive Environment |
| title_fullStr | Corrosion Behavior and Microhardness of a New B<sub>4</sub>C Ceramic Doped with 3% Volume High-Entropy Alloy in an Aggressive Environment |
| title_full_unstemmed | Corrosion Behavior and Microhardness of a New B<sub>4</sub>C Ceramic Doped with 3% Volume High-Entropy Alloy in an Aggressive Environment |
| title_short | Corrosion Behavior and Microhardness of a New B<sub>4</sub>C Ceramic Doped with 3% Volume High-Entropy Alloy in an Aggressive Environment |
| title_sort | corrosion behavior and microhardness of a new b sub 4 sub c ceramic doped with 3 volume high entropy alloy in an aggressive environment |
| topic | ceramic HEA EIS corrosion behavior microhardness SEM |
| url | https://www.mdpi.com/2075-4701/15/1/79 |
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