Heat-Resistance Tests of High-Temperature Composite Materials via Laser Heating in a Supersonic Flow

A method is proposed for the study of the heat resistance of samples of high-temperature composite materials via local laser heating of their surface in a supersonic flow. The performed studies allow the strategic selection of high-temperature materials based on the intensity of erosion with simultaneous laser and gasdynamic effects. The ablation rates of composite materials were experimentally determined at implemented surface temperatures of 2100–2300 K and blowing with a supersonic flow at a Mach number M = 2. The effect of the various additive materials, including carbides and oxides of Hf, Si, Ta, and Zr, on the ablation rate was studied. The data can be used as recommendations in the selection of formulations for high-temperature composite materials.