Maqola

Liquid metal assistant self-propagating high-temperature synthesis of S-containing high-entropy MAX-phase materials

Donglong BaiSchool of Materials and Energy, Shanghai Key Laboratory of Engineering Materials Application and Evaluation, Shanghai Polytechnic University, Shanghai 201209, ChinaQiang WangSchool of Materials Science and Engineering, Yancheng Institute of Technology, Yancheng 224000, ChinaBowen DengSchool of Materials and Energy, Shanghai Key Laboratory of Engineering Materials Application and Evaluation, Shanghai Polytechnic University, Shanghai 201209, ChinaYang LiSchool of Materials Science and Engineering, Yancheng Institute of Technology, Yancheng 224000, ChinaAo HuangSchool of Materials and Energy, Shanghai Key Laboratory of Engineering Materials Application and Evaluation, Shanghai Polytechnic University, Shanghai 201209, ChinaZitong ChengSchool of Materials and Energy, Shanghai Key Laboratory of Engineering Materials Application and Evaluation, Shanghai Polytechnic University, Shanghai 201209, ChinaZhao YunSchool of Materials and Energy, Shanghai Key Laboratory of Engineering Materials Application and Evaluation, Shanghai Polytechnic University, Shanghai 201209, ChinaJing LiSchool of Materials and Energy, Shanghai Key Laboratory of Engineering Materials Application and Evaluation, Shanghai Polytechnic University, Shanghai 201209, ChinaWei YaoSchool of Materials Science and Engineering, Yancheng Institute of Technology, Yancheng 224000, ChinaJianguang XuSchool of Materials and Energy, Shanghai Key Laboratory of Engineering Materials Application and Evaluation, Shanghai Polytechnic University, Shanghai 201209, China

2024en

ABI

Annotatsiya

Due to their high-entropy effects, the high-entropy (HE) MAX-phase materials improve the comprehensive performance of MAX phases, opening up more possibilities for practical engineering applications. However, it is still challenging to obtain S-containing high-entropy MAX phases because of the high volatilization behavior of sulfur, suffering from issues such as high reaction temperature and long reaction time of traditional synthesis methods. This paper proposes a novel process named as liquid metal assistant self-propagating high-temperature synthesis (LMA-SHS) for efficient synthesis of high-purity S-containing high-entropy MAX-phase materials. Low-melting-point metal (Sn or In) has been introduced into the raw mixture and melted into a liquid phase during the early stage of the SHS reaction. By serving as a “binder” between transition metal atoms of the M-site due to the negative mixing enthalpy, this liquid phase can accelerate mass and heat transfer during the SHS process, ensuring a uniform solid solution of each element and realizing the synthesis of high-purity (TiNbVZr)2SC in an extremely short time. The synthesis method for high-entropy MAX-phase materials developed in this study, i.e., LMA-SHS, showing very short reaction time, low energy consumption, high yield, and low cost, has the promise to be a general energy- and resource-efficient route towards high-purity HE materials.

Hali tarjima qilinmagan

Identifikatorlar

DOI: 10.1016/j.jmst.2024.05.006

Iqtiboslar va manbalar

2 ta iqtibos0 ta foydalanilgan manba

Koʻrsatkichlar — AkademScholar