Order and disorder in transition metal carbides and nitrides: experimental and theoretical aspects

Abstract

A general overview of the experimental data concerning long and short-range order of metalloid vacancies in rocksalt structure transition metal carbides and nitrides is given. Hexagonal compounds M2C and M2N are also briefly considered. Emphasis is put on neutron scattering experiments, and new information is given, in particular on the TiCx system. Some data concerns the vacancy-induced lattice distortions. Recent theoretical calculations of the stability of ordered phases and of pair interaction potentials, starting from the band structure of the stoichiometric compounds, are briefly presented. Printed in Great Britain. © 1985 IUPAC