{"title":"氢退极化下铜-47.3原子-%锌黄铜的自发溶解动力学","authors":"L. Burzyńska, Z. Zembura ∗, J. Karp","doi":"10.1016/0168-7336(89)80073-7","DOIUrl":null,"url":null,"abstract":"<div><p>The solid products of the dissolution of β'-ordered brass in deaerated 2.0 <em>M</em> H<sub>2</sub>SO<sub>4</sub> have been studied by optical and electron microscopy and X-ray diffraction. It has been found that the thickness of the zinc-leached layer as time function satisfies the Erofeev equation, a layer of variable zinc contents exists in the interphase zone: brass-pure copper and a brass of bainite structure appears at the surface of the β'-ordered brass. On the assumption that the reduction of H<sup>+</sup> ions is the rate-determining step of the electrochemical process the hypothesis that the rate of dissolution of brass controls the formation and growth of metallic copper phase has been corroborated.</p></div>","PeriodicalId":101061,"journal":{"name":"Reactivity of Solids","volume":"6 4","pages":"Pages 349-359"},"PeriodicalIF":0.0000,"publicationDate":"1989-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0168-7336(89)80073-7","citationCount":"0","resultStr":"{\"title\":\"Kinetics of the spontaneous dissolution of copper-47.3 atom-% zinc brass with hydrogen depolarization\",\"authors\":\"L. Burzyńska, Z. Zembura ∗, J. Karp\",\"doi\":\"10.1016/0168-7336(89)80073-7\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The solid products of the dissolution of β'-ordered brass in deaerated 2.0 <em>M</em> H<sub>2</sub>SO<sub>4</sub> have been studied by optical and electron microscopy and X-ray diffraction. It has been found that the thickness of the zinc-leached layer as time function satisfies the Erofeev equation, a layer of variable zinc contents exists in the interphase zone: brass-pure copper and a brass of bainite structure appears at the surface of the β'-ordered brass. On the assumption that the reduction of H<sup>+</sup> ions is the rate-determining step of the electrochemical process the hypothesis that the rate of dissolution of brass controls the formation and growth of metallic copper phase has been corroborated.</p></div>\",\"PeriodicalId\":101061,\"journal\":{\"name\":\"Reactivity of Solids\",\"volume\":\"6 4\",\"pages\":\"Pages 349-359\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1989-02-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/0168-7336(89)80073-7\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Reactivity of Solids\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/0168733689800737\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Reactivity of Solids","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/0168733689800737","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
摘要
用光学显微镜、电子显微镜和x射线衍射研究了β′有序黄铜在去氧2.0 M H2SO4中溶解的固体产物。结果表明:锌浸出层厚度随时间的变化满足Erofeev方程,相间区存在一层锌含量变化的层,β′有序黄铜表面出现一层贝氏体结构的黄铜。在假设氢离子还原是电化学过程的速率决定步骤的基础上,证实了黄铜溶解速率控制金属铜相形成和生长的假设。
Kinetics of the spontaneous dissolution of copper-47.3 atom-% zinc brass with hydrogen depolarization
The solid products of the dissolution of β'-ordered brass in deaerated 2.0 M H2SO4 have been studied by optical and electron microscopy and X-ray diffraction. It has been found that the thickness of the zinc-leached layer as time function satisfies the Erofeev equation, a layer of variable zinc contents exists in the interphase zone: brass-pure copper and a brass of bainite structure appears at the surface of the β'-ordered brass. On the assumption that the reduction of H+ ions is the rate-determining step of the electrochemical process the hypothesis that the rate of dissolution of brass controls the formation and growth of metallic copper phase has been corroborated.