{"title":"高温合成V2AlC MAX相：Al的影响","authors":"V. A. Gorshkov, P. A. Miloserdov, I. D. Kovalev","doi":"10.3103/S1061386225700189","DOIUrl":null,"url":null,"abstract":"<p>Cast materials based on MAX V<sub>2</sub>AlC phase were prepared by self-propagating high-temperature synthesis (SHS) under 5 MPa of Ar pressure from green mixtures containing V<sub>2</sub>O<sub>5</sub>, VO<sub>2</sub>, Al, and C powders. Variation in an excess of aluminum markedly affected the process parameters and phase composition/microstucture of combustion products. The synthesized samples were shown to contain V<sub>2</sub>AlC as a basis with additions of carbide and intermetallic phases of vanadium, whose presence is probably associated with a short lifetime of the liquid phase due to small green mixture mass and strong heat loss into the environment. A maximum content of MAX V<sub>2</sub>AlC phase in the ingot (68 wt %) was reached at 15% of excess aluminum.</p>","PeriodicalId":595,"journal":{"name":"International Journal of Self-Propagating High-Temperature Synthesis","volume":"34 3","pages":"209 - 214"},"PeriodicalIF":0.6000,"publicationDate":"2025-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"High-Temperature Synthesis of V2AlC MAX Phase: Influence of Al\",\"authors\":\"V. A. Gorshkov, P. A. Miloserdov, I. D. Kovalev\",\"doi\":\"10.3103/S1061386225700189\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Cast materials based on MAX V<sub>2</sub>AlC phase were prepared by self-propagating high-temperature synthesis (SHS) under 5 MPa of Ar pressure from green mixtures containing V<sub>2</sub>O<sub>5</sub>, VO<sub>2</sub>, Al, and C powders. Variation in an excess of aluminum markedly affected the process parameters and phase composition/microstucture of combustion products. The synthesized samples were shown to contain V<sub>2</sub>AlC as a basis with additions of carbide and intermetallic phases of vanadium, whose presence is probably associated with a short lifetime of the liquid phase due to small green mixture mass and strong heat loss into the environment. A maximum content of MAX V<sub>2</sub>AlC phase in the ingot (68 wt %) was reached at 15% of excess aluminum.</p>\",\"PeriodicalId\":595,\"journal\":{\"name\":\"International Journal of Self-Propagating High-Temperature Synthesis\",\"volume\":\"34 3\",\"pages\":\"209 - 214\"},\"PeriodicalIF\":0.6000,\"publicationDate\":\"2025-08-27\",\"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/S1061386225700189\",\"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/S1061386225700189","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
High-Temperature Synthesis of V2AlC MAX Phase: Influence of Al
Cast materials based on MAX V2AlC phase were prepared by self-propagating high-temperature synthesis (SHS) under 5 MPa of Ar pressure from green mixtures containing V2O5, VO2, Al, and C powders. Variation in an excess of aluminum markedly affected the process parameters and phase composition/microstucture of combustion products. The synthesized samples were shown to contain V2AlC as a basis with additions of carbide and intermetallic phases of vanadium, whose presence is probably associated with a short lifetime of the liquid phase due to small green mixture mass and strong heat loss into the environment. A maximum content of MAX V2AlC phase in the ingot (68 wt %) was reached at 15% of excess aluminum.
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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