Han, Huijun Kim, Han-Jin Kim, Hayoung Sohn, So-Dam Shim, Jae-Hyeok Suh, Jin-Yoo Shin, Hyung-Joon 2024-01-19T17:03:41Z 2024-01-19T17:03:41Z 2021-09-04 2020-07-01 0169-4332 https://pubs.kist.re.kr/handle/201004/118412 Alloying elements are known to enhance the first hydrogenation of TiFe alloys, although the mechanism has not yet been fully understood. The effects of Zr on the bond character of a TiFe alloy was investigated using scanning Kelvin probe force microscopy. Adding Zr led to increased formation of the TiFe2 and Ti2Fe phases. As for TiFe2 phase, where the added Zr substituted Fe, the substitution caused the bond character of the phase to become more covalent and less ionic due to the lower electronegativity of Zr compared to Fe. Subsequently, the work functions increased as a function of Zr content. English ELSEVIER HYDROGEN-STORAGE MECHANICAL ACTIVATION FETI ZR Determining the effect of added zirconium on the bond character in TiFe alloys using scanning Kelvin probe force microscopy Article 10.1016/j.apsusc.2020.146163 1 APPLIED SURFACE SCIENCE, v.517 APPLIED SURFACE SCIENCE 517 scie scopus 000531486600010 2-s2.0-85082402667 Chemistry, Physical Materials Science, Coatings & Films Physics, Applied Physics, Condensed Matter Chemistry Materials Science Physics Article HYDROGEN-STORAGE MECHANICAL ACTIVATION FETI ZR Alloy Microstructure Work function Bonding Atomic force microscopy