{"title":"ZrAl3的非选择性氧化","authors":"M. Paljević","doi":"10.1016/0022-5088(91)90014-U","DOIUrl":null,"url":null,"abstract":"<div><p>The oxidation of ZrAl<sub>3</sub> in dry oxygen in the temperature range 865–1073 K obeys a logarithmic rate law in the first period of reaction. An activation energy of 214 kJ mol<sup>−1</sup> has been estimated. Some time after this first period, depending on the temperature, the protective oxide film transforms to a porous one and the reaction rate increases. The oxide layer consists of α-Al<sub>2</sub>O<sub>3</sub>, tetragonal ZrO<sub>2</sub> and small amounts of monoclinic ZrO<sub>2</sub>, in contrast to the ZrO<sub>2</sub> oxide layer formed during oxidation of other phases in the Zr-Al system, where the selective oxidation of zirconium takes place.</p></div>","PeriodicalId":17534,"journal":{"name":"Journal of The Less Common Metals","volume":"175 2","pages":"Pages 289-294"},"PeriodicalIF":0.0000,"publicationDate":"1991-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0022-5088(91)90014-U","citationCount":"11","resultStr":"{\"title\":\"Non-selective oxidation of ZrAl3\",\"authors\":\"M. Paljević\",\"doi\":\"10.1016/0022-5088(91)90014-U\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The oxidation of ZrAl<sub>3</sub> in dry oxygen in the temperature range 865–1073 K obeys a logarithmic rate law in the first period of reaction. An activation energy of 214 kJ mol<sup>−1</sup> has been estimated. Some time after this first period, depending on the temperature, the protective oxide film transforms to a porous one and the reaction rate increases. The oxide layer consists of α-Al<sub>2</sub>O<sub>3</sub>, tetragonal ZrO<sub>2</sub> and small amounts of monoclinic ZrO<sub>2</sub>, in contrast to the ZrO<sub>2</sub> oxide layer formed during oxidation of other phases in the Zr-Al system, where the selective oxidation of zirconium takes place.</p></div>\",\"PeriodicalId\":17534,\"journal\":{\"name\":\"Journal of The Less Common Metals\",\"volume\":\"175 2\",\"pages\":\"Pages 289-294\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1991-10-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/0022-5088(91)90014-U\",\"citationCount\":\"11\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of The Less Common Metals\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/002250889190014U\",\"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 The Less Common Metals","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/002250889190014U","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
The oxidation of ZrAl3 in dry oxygen in the temperature range 865–1073 K obeys a logarithmic rate law in the first period of reaction. An activation energy of 214 kJ mol−1 has been estimated. Some time after this first period, depending on the temperature, the protective oxide film transforms to a porous one and the reaction rate increases. The oxide layer consists of α-Al2O3, tetragonal ZrO2 and small amounts of monoclinic ZrO2, in contrast to the ZrO2 oxide layer formed during oxidation of other phases in the Zr-Al system, where the selective oxidation of zirconium takes place.
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