MAX phase Zr2SeC and its thermal conduction behavior

• DOI: 10.1016/j.jeurceramsoc.2021.03.013
• Publication Date: 2021-03-18T14:46:37Z
• Authors: Ke Chen; Xiaojing Bai; Xulin Mu; Pengfei Yan; Nianxiang Qiu; Youbing Li; Jie Zhou; Yujie Song; Yiming Zhang; Shiyu Du; Zhifang Chai; Qing Huang
• Keywords: Condensed Matter - Materials Science; 0103 physical sciences; Materials Science (cond-mat.mtrl-sci); FOS: Physical sciences; 02 engineering and technology; 0210 nano-technology; 01 natural sciences

The elemental diversity is crucial to screen out ternary MAX phases with outstanding properties via tuning of bonding types and strength between constitutive atoms. As a matter of fact, the interactions between M and A atoms largely determine the physical and chemical properties of MAX phases. Herein, Se element was experimentally realized to occupy the A site of a MAX phase, Zr2SeC, becoming a new member within this nanolaminated ternary carbide family. Comprehensive characterizations including Rietveld refinement of X-ray Diffraction and atom-resolved transmission electron microscopy techniques were employed to validate this novel MAX phase. The distinct thermal conduction behaviors emerged are attributed to the characteristic interactions between Zr and Se atoms.