Quasiequilibrium treatment of the coverage of oxygen on tungsten at high temperature and low pressure

The quasiequilibrium treatment of heterogeneous reactions suggested by Batty and Stickney¹) and first order desorption kinetics are combined to formulate a model of the equilibrium coverage of oxygen on tungsten at high temperatures (1200 ? T ? 2500°K) and low oxygen partial pressures (10^?9 ? P_O2 ? 10^?5 Torr). The results are compared with existing data and the agreement is fairly good in view of the extreme simplicity of the theoretical model.