Corrosion Behavior of Cr<sub>19</sub>Fe<sub>22</sub>Co<sub>21</sub>Ni<sub>25</sub>Mo<sub>13</sub> Alloy in 1M Nitric Acid and 1M Hydrochloric Acid Solutions
The present work studied the microstructures of Cr<sub>19</sub>Fe<sub>22</sub>Co<sub>21</sub>Ni<sub>25</sub>Mo<sub>13</sub> alloy, and tested the polarization properties in deaerated 1M nitric acid and 1M hydrochloric solutions at different...
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| Autores principales: | , |
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| Formato: | article |
| Lenguaje: | EN |
| Publicado: |
MDPI AG
2021
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| Materias: | |
| Acceso en línea: | https://doaj.org/article/5e84263ffba947b0b89e8f78a51f446f |
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| Sumario: | The present work studied the microstructures of Cr<sub>19</sub>Fe<sub>22</sub>Co<sub>21</sub>Ni<sub>25</sub>Mo<sub>13</sub> alloy, and tested the polarization properties in deaerated 1M nitric acid and 1M hydrochloric solutions at different temperatures. The alloy was processed by an argon atmosphere arc-melting. Results indicated that the microstructure of Cr<sub>19</sub>Fe<sub>22</sub>Co<sub>21</sub>Ni<sub>25</sub>Mo<sub>13</sub> alloy was a dendritic one. The dendrites of Cr<sub>19</sub>Fe<sub>22</sub>Co<sub>21</sub>Ni<sub>25</sub>Mo<sub>13</sub> alloy were an FCC structure, and the interdendrites of Cr<sub>19</sub>Fe<sub>22</sub>Co<sub>21</sub>Ni<sub>25</sub>Mo<sub>13</sub> alloy were a eutectic structure with two phases of FCC and simple cubic (SC). The Cr<sub>19</sub>Fe<sub>22</sub>Co<sub>21</sub>Ni<sub>25</sub>Mo<sub>13</sub> alloy had better corrosion resistance compared with commercial 304 stainless steel in both deaerated 1M HNO<sub>3</sub> and 1M HCl solutions. The corrosion types of Cr<sub>19</sub>Fe<sub>22</sub>Co<sub>21</sub>Ni<sub>25</sub>Mo<sub>13</sub> alloy in both of 1M HNO<sub>3</sub> and 1M HCl solutions were uniform corrosion. |
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