Stability of α′′-Fe16N2 in hydrogenous atmospheres

Shinpei Yamamoto; Ruwan Gallage; Seiji Isoda; Yasunobu Ogata; Yoshihiro Kusano; Naoya Kobayashi; Tomoyuki Ogawa; Naoaki Hayashi; Migaku Takahashi; Mikio Takano

doi:10.1039/C4CC01839G

Stability of α′′-Fe₁₆N₂ in hydrogenous atmospheres†

Shinpei Yamamoto,*^a Ruwan Gallage,^ab Seiji Isoda,^a Yasunobu Ogata,^c Yoshihiro Kusano,^d Naoya Kobayashi,^b Tomoyuki Ogawa,^e Naoaki Hayashi,^a Migaku Takahashi^c and Mikio Takano^a

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* Corresponding authors

^a Institute for Integrated Cell-Material Sciences (iCeMS), Kyoto University, Yoshida Ushinomiya, Sakyo, Kyoto 606-8501, Japan
E-mail: yamamoto@icems.kyoto-u.ac.jp

^b T&T Innovations Inc., 1-4 Meijishinkai, Otake, Hiroshima 739-0652, Japan

^c New Industry Creation Hatchery Center (NICHe), Tohoku University, 6-6-10 Aza-Aoba, Aramaki, Aoba, Sendai 980-8579, Japan

^d Department of Fine & Applied Arts, Kurashiki University of Science and the Arts, 2640 Nishinoura, Tsurajima, Kurashiki, Okayama 712-8505, Japan

^e Department of Electronic Engineering, Graduate School of Engineering, Tohoku University, 6-6-05 Aza-Aoba, Aramaki, Aoba, Sendai 980-8579, Japan

Abstract

We revealed the inherent instability of α′′-Fe₁₆N₂ in hydrogenous atmospheres due to the denitrification toward α-Fe by forming NH₃ at the particle surface. Coating the particle surface with SiO₂ to suppress the formation of NH₃ has proven to be a simple yet powerful method to enhance the stability of α′′-Fe₁₆N₂ in hydrogenous atmospheres.

Chemical Communications

Stability of α′′-Fe₁₆N₂ in hydrogenous atmospheres†

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Stability of α′′-Fe₁₆N₂ in hydrogenous atmospheres

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Chemical Communications