Carbides and Nitrides of Zirconium and Hafnium.

ABSTRACT: Among transition metal carbides and nitrides, zirconium, and hafnium compounds are the most stable and have the highest melting temperatures. Here we review published data on phases and phase equilibria in Hf-Zr-C-N-O system, from experiment and ab initio computations with focus on rocksalt Zr and Hf carbides and nitrides, their solid solutions and oxygen solubility limits. The systematic experimental studies on phase equilibria and thermodynamics were performed mainly 40-60 years ago, mostly for binary systems of Zr and Hf with C and N. Since then, synthesis of several oxynitrides was reported in the fluorite-derivative type of structures, of orthorhombic and cubic higher nitrides Zr₃N₄ and Hf₃N₄. An ever-increasing stream of data is provided by

SUBMITTER: Ushakov SV 

PROVIDER: S-EPMC6747801 | biostudies-literature | 2019 Aug

REPOSITORIES: biostudies-literature