@article{senna_achete_simão_hirsch_2001,  title={Comparative study between the electrochemical behavior of TiN, TiCxNy and CrN hard coatings by using microscopy and electrochemical techniques},  volume={4},  ISSN={1516-1439},  url={https://doi.org/10.1590/S1516-14392001000200017},  DOI={10.1590/S1516-14392001000200017},  number={2},  journal={Materials Research},  publisher={ABM, ABC, ABPol},  author={Senna, L.F. and Achete, C.A. and Simão, R.A. and Hirsch, T.},  year={2001},  pages={137–141} }