Thermal explosion synthesis of first Te-containing layered ternary Hf2TeB MAX phase |
| |
| 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 100000, China |
| |
| Abstract: | With the new discovery of layered boride compounds M2AB (M = Zr, Hf, Nb; A = S, Se) with the typical Cr2AlC-type structure, MAX phases have been successfully expanded from carbides and nitrides to borides. However, only five MAX phase borides have been synthesized at present, which means that the research on MAX phase borides is still in its infancy. Therefore, the exploration of new MAX phase borides is necessary and can provide a solid basis for future research. In this paper, we describe the discovery of the first tellurium (Te)-containing layered ternary compound Hf2TeB using combinatorial methods of thermal explosion synthesis, XRD, SEM, and HRTEM analyses. This new MAX phase crystallizes with a Cr2AlC-type structure with the space group of P63/mmc, and the lattice parameters are a = 3.60475 Å, c = 13.12663 Å, respectively, and atomic positions are Hf at (1/3, 2/3, 0.57505), Te at (1/3, 2/3, 1/4), and B at (0, 0, 0). |
| |
| Keywords: | MAX phase Thermal explosion Reactive synthesis |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
