DOE OSTI · 3002336
Titanium surface nitriding by sodium amide in molten salts
Abstract
A crystalline titanium nitride (TiN) layer on titanium foil is achieved using sodium amide (NaNH 2 ) 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.
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Wang, Tao [Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)] (ORCID:000000015004160X), Wang, Yiyu [Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)] (ORCID:0000000172480646), Gao, Siyuan [Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)] (ORCID:0000000321704165), Fan, Juntian [Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)] (ORCID:0000000186044474), Dai, Sheng [Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)] (ORCID:0000000280463931). 2025-07-25. Titanium surface nitriding by sodium amide in molten salts. https://doi.org/10.1039/d5cc03614c
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