Synthesis of new rare earth containing ternary laminar Sc2PbC ceramic |
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| Affiliation: | 1. Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China;2. Science and Technology on Advanced Functional Composite Laboratory, Aerospace Research Institute of Materials & Processing Technology, No.1 South Dahongmen Road, Beijing 100076, China;3. Hebei Key Lab of Optic-Electronic Information and Materials, College of Physics Science and Technology, Hebei University, Baoding 071002, China;4. State Key Laboratory of Green Building Materials, China Building Materials Academy, Beijing 100024, China;1. Beijing Advanced Innovation Center for Materials Genome Engineering, Collaborative Innovation Center of Steel Technology, University of Science and Technology Beijing, Beijing 10083, China;2. Henan Key Laboratory of High Temperature Functional Ceramics, Zhengzhou University, Zhengzhou 450052, China;3. State Key Laboratory of Advanced Special Steel & Shanghai Key Laboratory of Advanced Ferrometallurgy & School of Materials Science and Engineering, Shanghai University, Shanghai 200072, China;4. AECC Beijing Institute of Aeronautical Materials, Beijing 100095, China;1. AVIC Chengdu Aircraft Industrial (Group) Co., Ltd., Chengdu, China;2. State Key Laboratory of Mechanical System and Vibration, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai, China;1. Depto. de Física de la Materia Condensada, ICMS, CSIC-Universidad de Sevilla, Apdo. 1065, Sevilla 41080, Spain;2. Instituto de Ciencia de Materiales de Sevilla, ICMS, CSIC-Universidad de Sevilla, Avda. Américo Vespucio 49, Sevilla 41092, Spain;1. State Key Laboratory for Mechanical Behavior of Materials, School of Materials Science and Engineering, Xi’an Jiaotong University, Xi''an 710049, China;2. State Key Laboratory for Mechanical Behavior of Materials, School of Electronic and Information Engineering, Xi’an Jiaotong University, Xi''an 710049, China;3. Key Laboratory of Education Ministry for Modern Design and Rotor-Bearing System, School of Mechanical Engineering, Xi’an Jiaotong University, Xi''an 710049, China;4. National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China;5. Department of Materials Science and Engineering & Shenzhen Engineering Research Center for Novel Electronic Information Materials and Devices, Southern University of Science and Technology, Shenzhen 518055, China;6. College of Materials Science and Engineering, Xi''an University of Science and Technology, Xi''an 710054, China;1. State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, PR China;2. School of Material Science and Engineering, Wuhan University of Technology, Wuhan 430070, PR China;3. Department of the Built Environmen, Eindhoven University of Technology, Eindhoven 5600 MB, the Netherlands |
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| Abstract: | In this paper, we combine rare earth element Sc and lead-containing MAX to predict a new ternary layered MAX phase Sc2PbC. Sc2PbC with a purity of 87.40 wt% was successfully synthesized by spark plasma sintering, and its crystal structure and atomic positions were obtained by X-ray diffraction (XRD). The Rietveld refinement results show that Sc2PbC belongs to a typical MAX phase P63/mmc (No.194) space group with lattice parameters of a = 3.4003(7) Å and c = 14.7475(3) Å, where Sc atom is located at (1/3, 2/3, 0.57958), Pb atom is located at (1/3, 2/3, 1/4), and C atom is located at (0, 0, 0). At the same time, we observed the typical MAX phase layered microstructure in Sc2PbC bulk using a scanning electron microscope (SEM). In addition, the proportion of elements measured by energy dispersive spectroscopy (EDS) is within the allowable error range, which confirms that Sc2PbC is a new MAX phase compound. |
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| Keywords: | MAX phase Rare earth Synthesis Microstructure |
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