The behavior of a heat-conducting‚ absorbing, and emitting layer of ceramic is considered, during transient combined conductive-radiative heat transfer. The solution includes the equation of radiative transfer within the material coupled to a transient energy equation that contains both radiative and conductive terms. It is based on nodal analysis and Hottel's zonal method extended by the ray tracing method. The transient energy equation including a radiative internal energy source is solved using a time marching finite difference procedure with variable space and time increments. The effects of the influence parameters‚ optical thicknesses, and refractive index of the layer are considered carefully.