Corrosion Behaviorof WC-Al2O3Composite in NaCl Solution with Different Concentrations AITranslate
Abstract AITranslate
WC-Al2O3composite was prepared by vacuum hot-pressing sintering method.The corrosion behavior of the WC-Al2O3composite in NaCl solution with different concentrations was studied by electrochemical corrosion method,the open circuit potential,polarization curve and impedance spectrum were mainly mea-sured,and the corrosion surface of the sample was characterized by SEM and XPS.The results show that the corrosion mechanism of the WC-Al2O3composite in NaCl solution is the oxidation of WC phase and the dissolution of Al2O3phase.With the increase of NaCl solution concentration,the corrosion current density decreases from 19.2μA/cm2to 7.5μA/cm2,while the total impedance increases from 178702·cm2to 215342·cm2,gradually improving the corrosion resistance of WC-Al2O3.When the NaCl solution concentration is high,the decrease of dissolved oxygen content in the solution becomes the main factor to control the electrochemical corrosion.The low dissolved oxygen content inhibits the electrochemical reaction process of the cathode,thereby inhibiting the overall electrochemical corrosion rate.
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DOI：
Chinese Library Classification Number:TB37[一般工业技术—材料科学与工程]
Citation Information:
WC-Al2O3composite was prepared by vacuum hot-pressing sintering method.The corrosion behavior of the WC-Al2O3composite in NaCl solution with different concentrations was studied by electrochemical corrosion method,the open circuit potential,polarization curve and impedance spectrum were mainly mea-sured,and the corrosion surface of the sample was characterized by SEM and XPS.The results show that the corrosion mechanism of the WC-Al2O3composite in NaCl solution is the oxidation of WC phase and the dissolution of Al2O3phase.With the increase of NaCl solution concentration,the corrosion current density decreases from 19.2μA/cm2to 7.5μA/cm2,while the total impedance increases from 178702·cm2to 215342·cm2,gradually improving the corrosion resistance of WC-Al2O3.When the NaCl solution concentration is high,the decrease of dissolved oxygen content in the solution becomes the main factor to control the electrochemical corrosion.The low dissolved oxygen content inhibits the electrochemical reaction process of the cathode,thereby inhibiting the overall electrochemical corrosion rate.
quote
| GB/T 7714-2015 | [1] HAN Bin, ZHU Shi-gen. Corrosion Behaviorof WC-Al2O3Composite in NaCl Solution with Different Concentrations[J]. Rare Metals and Cemented Carbides, 2023(2): 30-38. |
| MLA | [1] HAN Bin, and ZHU Shi-gen. "Corrosion Behaviorof WC-Al2O3Composite in NaCl Solution with Different Concentrations." Rare Metals and Cemented Carbides, no. 2, 2023, pp. 30-38. |
| APA | [1] HAN Bin, & ZHU Shi-gen. (2023). Corrosion Behaviorof WC-Al2O3Composite in NaCl Solution with Different Concentrations. Rare Metals and Cemented Carbides(2), 30-38. |
| IEEE | [1] HAN Bin and ZHU Shi-gen, "Corrosion Behaviorof WC-Al2O3Composite in NaCl Solution with Different Concentrations," Rare Metals and Cemented Carbides, no. 2, pp. 30-38, 2023. keywords: {WC-AlO;NaCl solution;electrochemical corrosion;binderless cemented carbide;corrossion resistance} |