Fracture strength, elastic modulus and Poisson's ratio of polycrystalline 3C thin-film silicon carbide found by microsample tensile testing

Twenty-three tests were completed on two sets of material with two different grain textures. Results of the microsample tensile tests show an average elastic modulus of 428 GPa, Poisson's ratio of 0.24 and fracture strength of 0.49 GPa for batch 1. Batch 2, a material with a different texture, resulted in an average elastic modulus of 448 GPa, Poisson's ratio of 0.17 and fracture strength of 0.81 GPa. In addition to differences in average values, variations were also seen in the Weibull characteristics of the two differently textured materials.