To better understand the effect of annealing in these samples, we performed transmission electron microscopy (TEM) of the product at room temperature under high vacuum. In Figure , we compare the Fast Fourier Transform (FFT) of these samples, where the non-annealed sample shows a ring pattern while the annealed sample shows well-defined spots. From the FFT images, we constructed filtered high resolution-TEM (HRTEM) images to create a color-coded map of crystalline domains where we compare the crystallinity of Sc2C before and after annealing. The filtered HRTEM images and FFTs confirm an increase in domain size upon annealing, likely due to kinetic trapping from rapid cooling after arc-melting.