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 $\rm M = 2$. The effect of the various additive materials, including carbides and oxides of $\rm Hf$, $\rm Si$, $\rm Ta$, and $\rm Zr$, on the ablation rate was studied. The data can be used as recommendations in the selection of formulations for high-temperature composite materials.