[en] We discuss the use of composite materials based on the use of self-sustaining coatings to reduce sputtering-induced erosion in magnetic confinement fusion devices while providing enhanced high-heat flux properties. One material, a copper-lithium alloy has been described previously. A second group of materials consists of porous tungsten, tungsten carbide, or tantalum, impregnated with an alkali metal alumino-silicate. These materials form an alkali metal overlayer similar to that found on the Cu-Li alloy. A third group of materials is obtained by infiltrating the porous high-Z refractory metal with an alkali metal-bearing alloy such as Cu-Li or Al-Li. These materials combine the high thermal conductivity of the infiltrate material with the high-temperature strength and melt layer stability of tungsten or tantalum. Calculations of the sputtering properties indicate that it may be possible to use a tungsten composite limiter at plasma edge temperatures up to approx.300 eV