Coatings of binary metal alloy nitrides can significantly improve the performance of structural components under harsh conditions. In the present work, the single‐layer and multilayer thin film coatings of titanium nitride (TiN) and aluminum titanium nitride (AlTiN) on stainless steel (SS301) substrate have been studied. The deposited films are characterized by performing X‐ray diffraction, X‐ray photoelectron spectroscopy, energy‐dispersive X‐ray (EDX), and scanning electron microscopy analysis. The hardness and elastic modulus of films has been measured using nanoindentation. To understand the deformation behavior and to predict the strain hardening material parameters such as yield stress, hardening exponent, and hardening modulus, the finite element (FE) method has been used. A parametric study of 2D axisymmetric models was made, and the simulated plots were compared with the experimental curves. From EDX measurements, the atomic percentage of aluminum atoms was observed to be 63%, due to which the elastic modulus of the AlTiN film, and consequently the yield stress, reduces significantly. The inclusion of Al atoms reduces the effective thermal conductivity of deposited films, making these coatings suitable for thermal barrier applications. The thermal transport behavior of thin film has been modeled using the FE method.
Sharma et al. (Wed,) studied this question.
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