{"title":"激光在Ti-Al-CuO粉末混合物中引发反应","authors":"A. G. Knyazeva, M. G. Krinitcyn","doi":"10.3103/S1061386224700365","DOIUrl":null,"url":null,"abstract":"<p>The paper described the data of a preliminary experiment on laser-initiated reactions in a mixture of Ti–Al–CuO powders. A two-dimensional model of laser initiation of reactions in a powder layer located on a substrate was presented. The laser beam moved along the surface according to a given trajectory. Chemical transformations were simulated by a total scheme including the main stages (decomposition of copper oxide CuO to Cu<sub>2</sub>O, metallothermic reactions leading to the formation of titanium and aluminum oxides, and the total reaction of matrix formation). The model was realized numerically. It was found that the process of composite synthesis can be divided into two stages. The first one consisted in partial decomposition of copper oxide; the second stage was a controlled process, when reactions took place only in the area of laser beam action. The results of the theory were found to be in qualitative agreement with the experimental data.</p>","PeriodicalId":595,"journal":{"name":"International Journal of Self-Propagating High-Temperature Synthesis","volume":"34 1","pages":"1 - 9"},"PeriodicalIF":0.5000,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Reaction Initiation by Laser in Ti–Al–CuO Powder Mixture\",\"authors\":\"A. G. Knyazeva, M. G. Krinitcyn\",\"doi\":\"10.3103/S1061386224700365\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>The paper described the data of a preliminary experiment on laser-initiated reactions in a mixture of Ti–Al–CuO powders. A two-dimensional model of laser initiation of reactions in a powder layer located on a substrate was presented. The laser beam moved along the surface according to a given trajectory. Chemical transformations were simulated by a total scheme including the main stages (decomposition of copper oxide CuO to Cu<sub>2</sub>O, metallothermic reactions leading to the formation of titanium and aluminum oxides, and the total reaction of matrix formation). The model was realized numerically. It was found that the process of composite synthesis can be divided into two stages. The first one consisted in partial decomposition of copper oxide; the second stage was a controlled process, when reactions took place only in the area of laser beam action. The results of the theory were found to be in qualitative agreement with the experimental data.</p>\",\"PeriodicalId\":595,\"journal\":{\"name\":\"International Journal of Self-Propagating High-Temperature Synthesis\",\"volume\":\"34 1\",\"pages\":\"1 - 9\"},\"PeriodicalIF\":0.5000,\"publicationDate\":\"2025-04-23\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"International Journal of Self-Propagating High-Temperature Synthesis\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://link.springer.com/article/10.3103/S1061386224700365\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Self-Propagating High-Temperature Synthesis","FirstCategoryId":"1085","ListUrlMain":"https://link.springer.com/article/10.3103/S1061386224700365","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Reaction Initiation by Laser in Ti–Al–CuO Powder Mixture
The paper described the data of a preliminary experiment on laser-initiated reactions in a mixture of Ti–Al–CuO powders. A two-dimensional model of laser initiation of reactions in a powder layer located on a substrate was presented. The laser beam moved along the surface according to a given trajectory. Chemical transformations were simulated by a total scheme including the main stages (decomposition of copper oxide CuO to Cu2O, metallothermic reactions leading to the formation of titanium and aluminum oxides, and the total reaction of matrix formation). The model was realized numerically. It was found that the process of composite synthesis can be divided into two stages. The first one consisted in partial decomposition of copper oxide; the second stage was a controlled process, when reactions took place only in the area of laser beam action. The results of the theory were found to be in qualitative agreement with the experimental data.
期刊介绍：
International Journal of Self-Propagating High-Temperature Synthesis is an international journal covering a wide range of topics concerned with self-propagating high-temperature synthesis (SHS), the process for the production of advanced materials based on solid-state combustion utilizing internally generated chemical energy. Subjects range from the fundamentals of SHS processes, chemistry and technology of SHS products and advanced materials to problems concerned with related fields, such as the kinetics and thermodynamics of high-temperature chemical reactions, combustion theory, macroscopic kinetics of nonisothermic processes, etc. The journal is intended to provide a wide-ranging exchange of research results and a better understanding of developmental and innovative trends in SHS science and applications.
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