Strengthening effects of interstitial nitrogen on rhenium

Lei Qi, Li Lei, Qiwei Hu, Leilei Zhang, Leihao Feng, Meifang Pu, Hiroaki Ohfuji, Tetsuo Irifune

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

Introducing interstitial nitrogen atoms into the rhenium lattices is accepted for enhancing the mechanical and thermal properties of the metal. Here, we present an experimental study on the strengthening effects of interstitial nitrogen in rhenium on bulk modulus B0 and elastic shear constant C44 by comparing the difference in the compression and vibration behaviors between Re3N and Re in the in situ high pressure angle dispersive X-ray diffraction and high-pressure Raman scattering. The incorporation of interstitial N atoms introduces the covalent bonding and the special Z-type structure along the c-axis, which caused the bulk modulus B0 and elastic shear constant C44 increase by 14% and 15%, and the incompressibility of the c-axis is obviously enhanced. In addition, this work well explains the strengthening effects of interstitial N atoms on mechanical and vibrational properties.

Original languageEnglish
Article number055901
JournalJournal of Applied Physics
Volume123
Issue number5
DOIs
Publication statusPublished - 2018 Feb 7
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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