Crystal structure of Ti4Ni2C

Huizi Liu; Xinyu Liang; Yibo Liu; Changzeng Fan; Bin Wen; Lifeng Zhang

doi:10.1107/S2414314624000439

Crystal structure of Ti₄Ni₂C

IUCrdata. 2024 Jan 19;9(Pt 1):x240043. doi: 10.1107/S2414314624000439. eCollection 2024 Jan.

Authors

Huizi Liu¹, Xinyu Liang¹, Yibo Liu¹, Changzeng Fan^{1

2}, Bin Wen¹, Lifeng Zhang³

Affiliations

¹ State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, People's Republic of China.
² Hebei Key Lab for Optimizing Metal Product Technology and Performance, Yanshan University, Qinhuangdao 066004, People's Republic of China.
³ School of Mechanical and Materials Engineering, North China University of Technology, Beijing 100144, People's Republic of China.

Abstract

Single crystals of the inter-metallic phase with composition Ti₄Ni₂C were serendipitously obtained by high-pressure sinter-ing of a mixture with initial chemical composition Ti₂Ni. The Ti₄Ni₂C phase crystallizes in the Fd m space group and can be considered as a partially filled Ti₂Ni structure with the C atom occupying an octa-hedral void. Ti₄Ni₂C is isotypic with Ti₄Ni₂O, Nb₄Ni₂C and Ta₄Ni₂C, all of which were studied previously by means of powder diffraction.

Keywords: Ti4Ni2C phase; crystal structure; high-pressure sintering; intermetallic.

Grants and funding

Funding for this research was provided by: The National Natural Science Foundation of China (grant No. 52173231; grant No. 51925105); Hebei Natural Science Foundation (grant No. E2022203182); The Innovation Ability Promotion Project of Hebei supported by Hebei Key Lab for Optimizing Metal Product Technology and Performance (grant No. 22567609H).