{"title":"尿酸对模拟体液中 AZ31 镁合金腐蚀行为的影响","authors":"Y. Zhang, D. Y. Ma, J. Y. Dai, L. P. Wu","doi":"10.1007/s11665-024-10083-8","DOIUrl":null,"url":null,"abstract":"<p>The action mechanism of uric acid, C<sub>5</sub>H<sub>4</sub>N<sub>4</sub>O<sub>3</sub> (UA), and the effect of its concentration (0, 100, 416 and 500 <i>μ</i>M) on the corrosion behavior of AZ31 Mg alloy in simulated body fluid were unmasked using scanning electron microscopy, x-ray diffraction, Raman, x-ray photoelectron spectroscopy, electrochemical impedance spectroscopy, potentiostatic polarization, potentiodynamic polarization, and hydrogen evolution tests. It was shown that UA was initially dissociated into (C<sub>5</sub>H<sub>4</sub>N<sub>4</sub>O<sub>3</sub>)<sup>−</sup> (UA<sup>−</sup>) and precipitated as (C<sub>5</sub>H<sub>4</sub>N<sub>4</sub>O<sub>3</sub>)<sub>2</sub>Mg ((UA<sup>−</sup>)<sub>2</sub>Mg). With the generation of (UA<sup>−</sup>)<sub>2</sub>Mg, hydroxyapatite (HA) was continuously formed, enhancing the corrosion resistance of AZ31 Mg alloy. Subsequently, UA<sup>−</sup> was transformed into C<sub>5</sub>H<sub>2</sub>N<sub>4</sub>O<sub>3</sub> and chelated with Ca in HA as Ca(C<sub>5</sub>H<sub>2</sub>N<sub>4</sub>O<sub>3</sub>), resulting in a loss of HA and undermining the corrosion resistance of AZ31 Mg alloy. UA inhibited the corrosion of AZ31 Mg alloy with an optimal concentration of 416 <i>μ</i>M. The inhibition of UA on the corrosion of AZ31 Mg alloy was closely related with the content of (UA<sup>-</sup>)<sub>2</sub> Mg, Mg<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub>, and Mg(OH)<sub>2</sub> in the corrosion products.</p>","PeriodicalId":644,"journal":{"name":"Journal of Materials Engineering and Performance","volume":"2 1","pages":""},"PeriodicalIF":2.2000,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Influence of Uric Acid on the Corrosion Behavior of AZ31 Magnesium Alloy in Simulated Body Fluid\",\"authors\":\"Y. Zhang, D. Y. Ma, J. Y. Dai, L. P. Wu\",\"doi\":\"10.1007/s11665-024-10083-8\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>The action mechanism of uric acid, C<sub>5</sub>H<sub>4</sub>N<sub>4</sub>O<sub>3</sub> (UA), and the effect of its concentration (0, 100, 416 and 500 <i>μ</i>M) on the corrosion behavior of AZ31 Mg alloy in simulated body fluid were unmasked using scanning electron microscopy, x-ray diffraction, Raman, x-ray photoelectron spectroscopy, electrochemical impedance spectroscopy, potentiostatic polarization, potentiodynamic polarization, and hydrogen evolution tests. It was shown that UA was initially dissociated into (C<sub>5</sub>H<sub>4</sub>N<sub>4</sub>O<sub>3</sub>)<sup>−</sup> (UA<sup>−</sup>) and precipitated as (C<sub>5</sub>H<sub>4</sub>N<sub>4</sub>O<sub>3</sub>)<sub>2</sub>Mg ((UA<sup>−</sup>)<sub>2</sub>Mg). With the generation of (UA<sup>−</sup>)<sub>2</sub>Mg, hydroxyapatite (HA) was continuously formed, enhancing the corrosion resistance of AZ31 Mg alloy. Subsequently, UA<sup>−</sup> was transformed into C<sub>5</sub>H<sub>2</sub>N<sub>4</sub>O<sub>3</sub> and chelated with Ca in HA as Ca(C<sub>5</sub>H<sub>2</sub>N<sub>4</sub>O<sub>3</sub>), resulting in a loss of HA and undermining the corrosion resistance of AZ31 Mg alloy. UA inhibited the corrosion of AZ31 Mg alloy with an optimal concentration of 416 <i>μ</i>M. The inhibition of UA on the corrosion of AZ31 Mg alloy was closely related with the content of (UA<sup>-</sup>)<sub>2</sub> Mg, Mg<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub>, and Mg(OH)<sub>2</sub> in the corrosion products.</p>\",\"PeriodicalId\":644,\"journal\":{\"name\":\"Journal of Materials Engineering and Performance\",\"volume\":\"2 1\",\"pages\":\"\"},\"PeriodicalIF\":2.2000,\"publicationDate\":\"2024-09-16\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Materials Engineering and Performance\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://doi.org/10.1007/s11665-024-10083-8\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Materials Engineering and Performance","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1007/s11665-024-10083-8","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Influence of Uric Acid on the Corrosion Behavior of AZ31 Magnesium Alloy in Simulated Body Fluid
The action mechanism of uric acid, C5H4N4O3 (UA), and the effect of its concentration (0, 100, 416 and 500 μM) on the corrosion behavior of AZ31 Mg alloy in simulated body fluid were unmasked using scanning electron microscopy, x-ray diffraction, Raman, x-ray photoelectron spectroscopy, electrochemical impedance spectroscopy, potentiostatic polarization, potentiodynamic polarization, and hydrogen evolution tests. It was shown that UA was initially dissociated into (C5H4N4O3)− (UA−) and precipitated as (C5H4N4O3)2Mg ((UA−)2Mg). With the generation of (UA−)2Mg, hydroxyapatite (HA) was continuously formed, enhancing the corrosion resistance of AZ31 Mg alloy. Subsequently, UA− was transformed into C5H2N4O3 and chelated with Ca in HA as Ca(C5H2N4O3), resulting in a loss of HA and undermining the corrosion resistance of AZ31 Mg alloy. UA inhibited the corrosion of AZ31 Mg alloy with an optimal concentration of 416 μM. The inhibition of UA on the corrosion of AZ31 Mg alloy was closely related with the content of (UA-)2 Mg, Mg3(PO4)2, and Mg(OH)2 in the corrosion products.
期刊介绍:
ASM International''s Journal of Materials Engineering and Performance focuses on solving day-to-day engineering challenges, particularly those involving components for larger systems. The journal presents a clear understanding of relationships between materials selection, processing, applications and performance.
The Journal of Materials Engineering covers all aspects of materials selection, design, processing, characterization and evaluation, including how to improve materials properties through processes and process control of casting, forming, heat treating, surface modification and coating, and fabrication.
Testing and characterization (including mechanical and physical tests, NDE, metallography, failure analysis, corrosion resistance, chemical analysis, surface characterization, and microanalysis of surfaces, features and fractures), and industrial performance measurement are also covered