Published online by Cambridge University Press: 16 February 2011
A unique set of physico-chemical properties of the implantation phases (transition metal carbides and nitrides) and their wide-scale application in production processes motivated an intensive research in the electronic properties of the phases [1, 2]. A great attention attaches recently to the study of specific features of the electronic surface states of refractory compounds, the role of the electronic states being decisive in the formation of adsorption, catalytic, emission and other characteristics of the compounds. Available calculations of the energy spectrum of the high-symmetry faces of some 3d-5d-metal carbides and nitrides performed with the use of the band theory methods [4, 5] made it possible to establish principal features peculiar to the formation of surface states for ideal systems.