{"title":"用俄歇电子能谱研究了Ni双晶中晶界偏析的温度依赖性","authors":"T. Muschik, W. Gust, S. Hofmann, B. Predel","doi":"10.1016/0001-6160(89)90326-X","DOIUrl":null,"url":null,"abstract":"<div><p>Auger electron spectroscopy has been used to study indium grain boundary segregation in symmetric «110å tilt boundaries and randomly oriented boundaries in bicrystals as well as polycrystals of NiIn containing 0.l–1.4 at. % In. Quench-induced non-equilibrium segregation of In, caused by fluxes of In vacancy complexes to the interfaces, influenced the results for quenching temperatures above 1000–1100 K. A careful analysis of sputtering profiles supplied additional informations for the discussion with respect to current models of QINS. From the equilibrium segregation behaviour for the symmetric boundaries both the segregation enthalpies (<em>ΔH</em><sub>se</sub> = 38 ± 3 kJ/mol and <em>ΔH</em><sub>seg</sub> = 39 ± 3 kJ/mol) and the mean segregation entropy [<em>ΔS</em><sub>seg</sub> = (0 ± 0.5)<em>R</em>] have been determined for the first time. The segregation free energy for 970 K is <em>ΔG</em><sub>seg</sub> = 50 ± 5 kJ/mol for the polycrystals. The symmetric atomic arrangement along the tilt boundaries is assumed to be responsible for the low segregation entropy.</p></div>","PeriodicalId":6969,"journal":{"name":"Acta Metallurgica","volume":"37 11","pages":"Pages 2917-2925"},"PeriodicalIF":0.0000,"publicationDate":"1989-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0001-6160(89)90326-X","citationCount":"18","resultStr":"{\"title\":\"The temperature dependence of grain boundary segregation in NiIn bicrystals studied with auger electron spectroscopy\",\"authors\":\"T. Muschik, W. Gust, S. Hofmann, B. Predel\",\"doi\":\"10.1016/0001-6160(89)90326-X\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Auger electron spectroscopy has been used to study indium grain boundary segregation in symmetric «110å tilt boundaries and randomly oriented boundaries in bicrystals as well as polycrystals of NiIn containing 0.l–1.4 at. % In. Quench-induced non-equilibrium segregation of In, caused by fluxes of In vacancy complexes to the interfaces, influenced the results for quenching temperatures above 1000–1100 K. A careful analysis of sputtering profiles supplied additional informations for the discussion with respect to current models of QINS. From the equilibrium segregation behaviour for the symmetric boundaries both the segregation enthalpies (<em>ΔH</em><sub>se</sub> = 38 ± 3 kJ/mol and <em>ΔH</em><sub>seg</sub> = 39 ± 3 kJ/mol) and the mean segregation entropy [<em>ΔS</em><sub>seg</sub> = (0 ± 0.5)<em>R</em>] have been determined for the first time. The segregation free energy for 970 K is <em>ΔG</em><sub>seg</sub> = 50 ± 5 kJ/mol for the polycrystals. The symmetric atomic arrangement along the tilt boundaries is assumed to be responsible for the low segregation entropy.</p></div>\",\"PeriodicalId\":6969,\"journal\":{\"name\":\"Acta Metallurgica\",\"volume\":\"37 11\",\"pages\":\"Pages 2917-2925\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1989-11-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/0001-6160(89)90326-X\",\"citationCount\":\"18\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Acta Metallurgica\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/000161608990326X\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Acta Metallurgica","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/000161608990326X","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
The temperature dependence of grain boundary segregation in NiIn bicrystals studied with auger electron spectroscopy
Auger electron spectroscopy has been used to study indium grain boundary segregation in symmetric «110å tilt boundaries and randomly oriented boundaries in bicrystals as well as polycrystals of NiIn containing 0.l–1.4 at. % In. Quench-induced non-equilibrium segregation of In, caused by fluxes of In vacancy complexes to the interfaces, influenced the results for quenching temperatures above 1000–1100 K. A careful analysis of sputtering profiles supplied additional informations for the discussion with respect to current models of QINS. From the equilibrium segregation behaviour for the symmetric boundaries both the segregation enthalpies (ΔHse = 38 ± 3 kJ/mol and ΔHseg = 39 ± 3 kJ/mol) and the mean segregation entropy [ΔSseg = (0 ± 0.5)R] have been determined for the first time. The segregation free energy for 970 K is ΔGseg = 50 ± 5 kJ/mol for the polycrystals. The symmetric atomic arrangement along the tilt boundaries is assumed to be responsible for the low segregation entropy.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
