{"title":"正电子寿命对塑性变形银回收的研究:氧的影响","authors":"D. Wegner","doi":"10.1088/0305-4608/18/10/018","DOIUrl":null,"url":null,"abstract":"The recovery of silver cold-worked at room temperature was investigated by means of positron lifetime spectroscopy. At temperatures between 370 K and 470 K, a recovery stage occurs which is indicated by the decrease of a long lifetime ( tau 2=190(3)ps) intensity. In contrast to vacuum-annealed silver, the samples heated in an oxygen atmosphere exhibit an antirecovery stage above the solubility temperature of oxygen in silver: the intensity of tau 2 reincreases to some 80% above T approximately=500 K. This stage is attributed to the trapping of recrystallisation-induced vacancies at impurity oxygen molecules. To some extent, these complexes are thermally stable up to 1070 K.","PeriodicalId":16828,"journal":{"name":"Journal of Physics F: Metal Physics","volume":"107 1-2","pages":"2291-2302"},"PeriodicalIF":0.0000,"publicationDate":"1988-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"4","resultStr":"{\"title\":\"Positron lifetime studies on the recovery of plastically deformed silver: the influence of oxygen\",\"authors\":\"D. Wegner\",\"doi\":\"10.1088/0305-4608/18/10/018\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The recovery of silver cold-worked at room temperature was investigated by means of positron lifetime spectroscopy. At temperatures between 370 K and 470 K, a recovery stage occurs which is indicated by the decrease of a long lifetime ( tau 2=190(3)ps) intensity. In contrast to vacuum-annealed silver, the samples heated in an oxygen atmosphere exhibit an antirecovery stage above the solubility temperature of oxygen in silver: the intensity of tau 2 reincreases to some 80% above T approximately=500 K. This stage is attributed to the trapping of recrystallisation-induced vacancies at impurity oxygen molecules. To some extent, these complexes are thermally stable up to 1070 K.\",\"PeriodicalId\":16828,\"journal\":{\"name\":\"Journal of Physics F: Metal Physics\",\"volume\":\"107 1-2\",\"pages\":\"2291-2302\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1988-10-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"4\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Physics F: Metal Physics\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1088/0305-4608/18/10/018\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Physics F: Metal Physics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1088/0305-4608/18/10/018","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Positron lifetime studies on the recovery of plastically deformed silver: the influence of oxygen
The recovery of silver cold-worked at room temperature was investigated by means of positron lifetime spectroscopy. At temperatures between 370 K and 470 K, a recovery stage occurs which is indicated by the decrease of a long lifetime ( tau 2=190(3)ps) intensity. In contrast to vacuum-annealed silver, the samples heated in an oxygen atmosphere exhibit an antirecovery stage above the solubility temperature of oxygen in silver: the intensity of tau 2 reincreases to some 80% above T approximately=500 K. This stage is attributed to the trapping of recrystallisation-induced vacancies at impurity oxygen molecules. To some extent, these complexes are thermally stable up to 1070 K.
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