A particularly promising candidate for widespread adopted Accident-Tolerant Fuels(ATF) is Silicon Carbide (SiC), which is deemed significantly advantageous for nuclear energy applications due to its remarkable characteristics. The understanding of bubble behavior on SiC surfaces is critical for the development of improved SiC designs. An experiment study was executed to evaluate the characteristics and population of bubbles on the surface of SiC material in subcooled boiling flow. The experimental setup maintained atmospheric pressure and featured a subcooling range of 0-12 K and a wall superheat from 0K to 30K, and a maximum coolant Reynolds number of 10400. The findings accentuated that the sensitivity of heat to fluid velocity during nucleation boiling is greater on surfaces with small porosity than on those with larger porosity. The Sauter mean diameter displays an upward trend in sync with increasing wall superheat, and the Sauter mean diameter can be represented as a dependence of the maximum and minimum bubble diameters. In terms of bubble distribution properties, it was discovered that bubble size and bubble aspect ratio conform to a lognormal distribution, while bubble orientation adheres to a normal distribution, and bubble circularity validates a Weibull distribution.