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Investigation of the characteristics and corrosion resistance of Al2O3/TiN coatings

机译：Al2O3 / TiN涂层的特性和耐蚀性研究

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摘要

Al2O3/TiN double and Al2O3/Cr/TiN triple coatings were produced on stainless steel substrates using plasma-detonation techniques. Investigation of the microstructure and characteristics of the coatings after the preparation was performed by X-ray diffraction (XRD), transmission electron microscopy (TEM) and Auger electron spectroscopy (AES). The corrosion resistance of the coatings was studied in several electrolytic solutions (0.5 M H2SO4, 1 M HCl, 0.75 M NaCl) using electrochemical techniques (open circuit potential, cyclovoltammetry and potentiodynamic polarization). The obtained results showed, in most of the cases, an improvement of the corrosion resistance, except in NaCl solutions. The effect of the controlled thickness of TiN and Cr layers as well as the additional treatment with a high-current electron beam was also investigated. Nuclear reaction analysis (NRA), Rutherford backscattering spectroscopy (RBS) and scanning electron microscopy (SEM) were applied for the characterization of the samples before and after the corrosion experiments. (c) 2005 Elsevier B.V. All rights reserved.
机译：使用等离子爆轰技术在不锈钢基底上制备了Al2O3 / TiN双层和Al2O3 / Cr / TiN双层涂层。通过X射线衍射（XRD），透射电子显微镜（TEM）和俄歇电子能谱（AES）对制备后的涂层的微观结构和特性进行研究。使用电化学技术（开路电势，循环伏安法和电势极化）在几种电解液（0.5 M H2SO4、1 M HCl，0.75 M NaCl）中研究了涂层的耐腐蚀性。所获得的结果表明，在大多数情况下，除了在NaCl溶液中，耐蚀性都有所提高。还研究了TiN和Cr层的受控厚度以及大电流电子束的附加处理的影响。在腐蚀实验之前和之后，采用核反应分析（NRA），卢瑟福背散射光谱（RBS）和扫描电子显微镜（SEM）表征样品。 （c）2005 Elsevier B.V.保留所有权利。

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