Title of article :
Mechanical characterization of a novel nanocrystalline coating: First-principles calculations and nanoindentation
Author/Authors :
Lai، نويسنده , , Daohui and Xu، نويسنده , , Jiang and Xie، نويسنده , , Zong-Han and Habibi، نويسنده , , Daryoush and Munroe، نويسنده , , Paul، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2012
Abstract :
A nanostructured MoSi2 coating with the average grain size of 5 nm and a strong (111) preferred orientation, was synthesized potentially for jet engine hot-zone components against volcanic ash damage. The high hardness of the resulting coating was predicted using first-principles calculations and found to agree well with the experimental data determined by nanoindentation. We also found that the softening and subsequent breaking of the Mo―Si bonds were responsible for the failure of this nanostructured coating under tensile loading.
Keywords :
Transition metal silicides , first-principles , Nanocrystalline materials , mechanical properties
Journal title :
Materials Characterization
Journal title :
Materials Characterization