W Tungsten

The volume describes the chemical behaviour of elemental tungsten toward the nonmetallic elements nitrogen to arsenic (i.e. N,F, Cl, Br, I, S, Se, Te, Po, B, C, Si, P and As). The description of the chemical behaviour starts with information on the phase diagrams which allow an overview of the existing stable compounds. The major part of the information in this volume is about the kinds of products and experimental conditions, as well as the kinetics and thermodynamics of their formation. Short descriptions of bulk diffusion in binary systems complement the kinetic data on the mostly diffusion-controlled reactions. Pure surface phenomena on tungsten are not considered. A large chapter is devoted to the comprehensively studied chemical processes and transport processes in tungsten-halogen lamps. Product formation in the tungsten-carbon and tungsten-silicon systems is also of special interest in view of possible applications.