Work

Structural variability of gamma Ni-silicides

Year: 2025

Type: article

Abstract: Studying the Ni-Si system, we confirmed the only known Ni 31 Si 12 ( S12 ) structure and in addition several new gamma modifications were also observed. Our TEM/STEM studies of gamma Ni-silicides revealed crystal structures with different atomic arrangements and even varying c cell parameters (~6 Å, ~12 Å, ~18 Å, ~36 Å). Three of them were determined and named S6a , S6b and S18 . The nomenclature of S6 , S12 and S18 refers to their c cell parameters which are multiples of ~6 Å. Nanoscale variability was also observed in the gamma Ni-silicides, where nanoscale variability was the outcome of stacking, inversion, twinning and intimate (001) intergrowths of the different modifications.

Source: Journal of Alloys and Compounds

DOI: 10.1016/j.jallcom.2025.181554

Authors: Erzsébet Dodony, István Dódony, Zsolt Fogarassy, Péter Pekker, György Sáfrán

Institutions: Eötvös Loránd University, Institute for Technical Physics and Materials Science, HUN-REN Centre for Energy Research, Hungarian Research Network, University of Pannonia

Language: English

Topic: Intermetallics and Advanced Alloy Properties

Subfield: Mechanical Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,660

Funders: Hungarian Scientific Research Fund, Nemzeti Kutatási, Fejlesztési és Innovaciós Alap