August 2025

Journal

Titanium Surface Nitriding by Sodium Amide in Molten Salts

By:
Wang, Tao ; Wang, Yiyu ; Gao, Siyuan ; Fan, Juntian ; Dai, Sheng
Journal Name:
Chemical Communications
Page Number:
12976-12979
Volume:
61
Issue Number:
69
Publication Date:
August 2025
View DOI Listing:
https://doi.org/10.1039/D5CC03614C

Abstract

A crystalline titanium nitride (TiN) layer on titanium foil is achieved using sodium amide (NaNH2) as a nitrogen source in LiCl–KCl molten salts. Nanoindentation testing revealed exceptional mechanical properties, with the nitrided surface achieving a hardness of approximately 20.6 GPa, representing more than a four-fold increase compared to the untreated titanium substrate.