{"title":"Ti3AlC2 single crystal growth via controlling horizontal temperature gradient","authors":"QingYu Zhang, YuKun Xiao, Mian Li, Qing Huang","doi":"10.1111/jace.20287","DOIUrl":null,"url":null,"abstract":"<p>Growth of single-crystal MAX phases is crucial for studying their intrinsic physical properties. Although Ti<sub>3</sub>AlC<sub>2</sub> is one of the most popular MAX phases for the study of high-temperature structural materials as well as a precursor for MXene, the growth of Ti<sub>3</sub>AlC<sub>2</sub> single crystals remains a challenge owing to the limited solubility of graphite in the Ti melt via the self-flux method. In this study, a horizontal temperature gradient was used to resolve the dissolution of graphite in the melt and its diffusion rate. Ti<sub>3</sub>AlC<sub>2</sub> single crystals with an area of 9 mm<sup>2</sup> were successfully produced under horizontal temperature gradients. It was tentatively proposed that the crystallinity of Ti<sub>3</sub>AlC<sub>2</sub> single crystals could be reflected by the intensity ratio of the in-plane and <i>c</i>-axial phonon vibration modes in the Raman spectra of the MAX phase.</p>","PeriodicalId":200,"journal":{"name":"Journal of the American Ceramic Society","volume":"108 4","pages":""},"PeriodicalIF":3.5000,"publicationDate":"2024-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of the American Ceramic Society","FirstCategoryId":"88","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1111/jace.20287","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, CERAMICS","Score":null,"Total":0}
引用次数: 0
Abstract
Growth of single-crystal MAX phases is crucial for studying their intrinsic physical properties. Although Ti3AlC2 is one of the most popular MAX phases for the study of high-temperature structural materials as well as a precursor for MXene, the growth of Ti3AlC2 single crystals remains a challenge owing to the limited solubility of graphite in the Ti melt via the self-flux method. In this study, a horizontal temperature gradient was used to resolve the dissolution of graphite in the melt and its diffusion rate. Ti3AlC2 single crystals with an area of 9 mm2 were successfully produced under horizontal temperature gradients. It was tentatively proposed that the crystallinity of Ti3AlC2 single crystals could be reflected by the intensity ratio of the in-plane and c-axial phonon vibration modes in the Raman spectra of the MAX phase.
期刊介绍：
The Journal of the American Ceramic Society contains records of original research that provide insight into or describe the science of ceramic and glass materials and composites based on ceramics and glasses. These papers include reports on discovery, characterization, and analysis of new inorganic, non-metallic materials; synthesis methods; phase relationships; processing approaches; microstructure-property relationships; and functionalities. Of great interest are works that support understanding founded on fundamental principles using experimental, theoretical, or computational methods or combinations of those approaches. All the published papers must be of enduring value and relevant to the science of ceramics and glasses or composites based on those materials.
Papers on fundamental ceramic and glass science are welcome including those in the following areas:
Enabling materials for grand challenges[...]
Materials design, selection, synthesis and processing methods[...]
Characterization of compositions, structures, defects, and properties along with new methods [...]
Mechanisms, Theory, Modeling, and Simulation[...]
JACerS accepts submissions of full-length Articles reporting original research, in-depth Feature Articles, Reviews of the state-of-the-art with compelling analysis, and Rapid Communications which are short papers with sufficient novelty or impact to justify swift publication.
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