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Title: Diffusion-controlled alloying of single-phase multi-principal transition metal carbides with high toughness and low thermal diffusivity

Multicomponent alloying has displayed extraordinary potential for producing exceptional structural and functional materials. Consequently, the synthesis of single-phase, multi-principal covalent compounds remains a challenge. Here, we present a diffusion-controlled alloying strategy for the realization of covalent multi-principal transition metal carbides (MPTMCs) with a single face-centered cubic phase. The increased interfacial diffusion promoted by the addition of a nonstoichiometric compound leads to rapid formation of the single phase at much lower sintering temperature. Direct atomic-level observations via scanning transmission electron microscopy demonstrate that MPTMCs are composed of a single phase with a random distribution of all cations, which holds the key to the unique combinations of improved fracture toughness, superior Vickers hardness, and extremely lower thermal diffusivity achieved in MPTMCs. Conclusively, the present discovery provides a promising approach toward the design and synthesis of next-generation high-performance materials.
Authors:
 [1] ;  [2] ;  [3] ;  [3] ;  [1] ;  [4] ;  [2] ;  [5] ;  [6] ;  [3] ;  [3] ;  [2] ;  [3] ;  [3] ;  [3] ;  [3] ;  [2] ; ORCiD logo [2] ;  [2] ;  [4] more »;  [7] ;  [8] « less
  1. Yanshan Univ., Qinhuangdao, (China); Center for High Pressure Science and Technology Advanced Research, Beijing (China)
  2. Center for High Pressure Science and Technology Advanced Research, Beijing (China)
  3. Yanshan Univ., Qinhuangdao, (China)
  4. Chinese Academy of Sciences (CAS), Beijing (China)
  5. Argonne National Lab. (ANL), Lemont, IL (United States)
  6. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  7. Stanford Univ., Stanford, CA (United States)
  8. Center for High Pressure Science and Technology Advanced Research, Beijing (China); Carnegie Inst. of Washington, Washington, DC (United States). Geophysical Lab.
Publication Date:
Grant/Contract Number:
AC02-76SF00515; AC02-06CH11357
Type:
Accepted Manuscript
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 114; Journal Issue: 1; Journal ID: ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)
Research Org:
SLAC National Accelerator Lab. (SLAC), Menlo Park, CA (United States); Stanford Univ., CA (United States); Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Scientific User Facilities Division
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE
OSTI Identifier:
1504461
Alternate Identifier(s):
OSTI ID: 1503598

Peng, Chong, Gao, Xiang, Wang, Mingzhi, Wu, Lailei, Tang, Hu, Li, Xiaomin, Zhang, Qian, Ren, Yang, Zhang, Fuxiang, Wang, Yuhui, Zhang, Bing, Gao, Bo, Zou, Qin, Zhao, Yucheng, Yang, Qian, Tian, Dongxia, Xiao, Hong, Gou, Huiyang, Yang, Wenge, Bai, Xuedong, Mao, Wendy L., and Mao, Ho-kwang. Diffusion-controlled alloying of single-phase multi-principal transition metal carbides with high toughness and low thermal diffusivity. United States: N. p., Web. doi:10.1063/1.5054954.
Peng, Chong, Gao, Xiang, Wang, Mingzhi, Wu, Lailei, Tang, Hu, Li, Xiaomin, Zhang, Qian, Ren, Yang, Zhang, Fuxiang, Wang, Yuhui, Zhang, Bing, Gao, Bo, Zou, Qin, Zhao, Yucheng, Yang, Qian, Tian, Dongxia, Xiao, Hong, Gou, Huiyang, Yang, Wenge, Bai, Xuedong, Mao, Wendy L., & Mao, Ho-kwang. Diffusion-controlled alloying of single-phase multi-principal transition metal carbides with high toughness and low thermal diffusivity. United States. doi:10.1063/1.5054954.
Peng, Chong, Gao, Xiang, Wang, Mingzhi, Wu, Lailei, Tang, Hu, Li, Xiaomin, Zhang, Qian, Ren, Yang, Zhang, Fuxiang, Wang, Yuhui, Zhang, Bing, Gao, Bo, Zou, Qin, Zhao, Yucheng, Yang, Qian, Tian, Dongxia, Xiao, Hong, Gou, Huiyang, Yang, Wenge, Bai, Xuedong, Mao, Wendy L., and Mao, Ho-kwang. 2019. "Diffusion-controlled alloying of single-phase multi-principal transition metal carbides with high toughness and low thermal diffusivity". United States. doi:10.1063/1.5054954. https://www.osti.gov/servlets/purl/1504461.
@article{osti_1504461,
title = {Diffusion-controlled alloying of single-phase multi-principal transition metal carbides with high toughness and low thermal diffusivity},
author = {Peng, Chong and Gao, Xiang and Wang, Mingzhi and Wu, Lailei and Tang, Hu and Li, Xiaomin and Zhang, Qian and Ren, Yang and Zhang, Fuxiang and Wang, Yuhui and Zhang, Bing and Gao, Bo and Zou, Qin and Zhao, Yucheng and Yang, Qian and Tian, Dongxia and Xiao, Hong and Gou, Huiyang and Yang, Wenge and Bai, Xuedong and Mao, Wendy L. and Mao, Ho-kwang},
abstractNote = {Multicomponent alloying has displayed extraordinary potential for producing exceptional structural and functional materials. Consequently, the synthesis of single-phase, multi-principal covalent compounds remains a challenge. Here, we present a diffusion-controlled alloying strategy for the realization of covalent multi-principal transition metal carbides (MPTMCs) with a single face-centered cubic phase. The increased interfacial diffusion promoted by the addition of a nonstoichiometric compound leads to rapid formation of the single phase at much lower sintering temperature. Direct atomic-level observations via scanning transmission electron microscopy demonstrate that MPTMCs are composed of a single phase with a random distribution of all cations, which holds the key to the unique combinations of improved fracture toughness, superior Vickers hardness, and extremely lower thermal diffusivity achieved in MPTMCs. Conclusively, the present discovery provides a promising approach toward the design and synthesis of next-generation high-performance materials.},
doi = {10.1063/1.5054954},
journal = {Applied Physics Letters},
number = 1,
volume = 114,
place = {United States},
year = {2019},
month = {1}
}

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