Исследование влияния содержания Si на деформацию и разрушение покрытий Ti-Al-Ta-Si-N при одноосном растяжении

Abstract

The effect of Si alloying of Ti-Al-Ta-N coatings on their crack resistance and adhesive strength under uniaxial tension is investigated. It is shown that the hardness, reduced Young's modulus and residual compressive stresses increase with the addition of Si. The alloying is found to lead to a shift in the ultimate strain to failure towards larger values and an increase in the density of transverse cracks. It is also revealed that the shear strength of the interface between the Ti-Al-Ta-Si-N coatings and the steel substrate increases with increasing silicon content, reaching a maximum at 7.5 at. % Si