Comparative Investigation on Corrosion Resistance of Stainless Steels Coated with Titanium Nitride, Nitrogen Titanium Carbide and Titanium-Diamond-like Carbon Films
Comparative Investigation on Corrosion Resistance of Stainless Steels Coated with Titanium Nitride, Nitrogen Titanium Carbide and Titanium-Diamond-like Carbon Films
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氮化钛、氮碳化钛与钛金刚石碳膜镀层不锈钢耐蚀性对比研究
DOI：
10.3390/coatings11121543
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发表时间：
2021-12
期刊：
影响因子：
3.4
通讯作者：
Xinming Wang
中科院分区：
文献类型：
--
作者：
Jia Lou;Zonglong Gao;Jie Zhang;Hao He;Xinming Wang
本研究通过在316L不锈钢（SS）表面和横截面形貌、开路电位测试、电化学阻抗谱和电位计测试的差异，比较了氮化钛（TiN）、氮化钛（TiCN）和类金刚石钛（Ti-DLC）薄膜的耐蚀性。由于碳化钛（TiC）晶体在电解气氛中阻碍了腐蚀物质穿透沉积膜，使得TiCN和Ti-DLC薄膜的耐蚀性显著提高。TiN的耐蚀性最低，主要是由于其厚度小，缺陷体积大。Ti-DLC膜在不同电解质中，特别是在Cl -和H+浓度较高的电解质中，腐蚀电流密度最低（约为4.577 μA/cm2），厚度减小（约为0.12 μm），是最适合316L SS基片的腐蚀防护材料。
In this study, the corrosion resistance of titanium nitride (TiN), nitrogen titanium carbide (TiCN) and titanium-diamond-like carbon (Ti-DLC) films deposited on 316L stainless steel (SS) were compared via differences in the surface and section-cross morphologies, open circuit potential tests, electrochemical impedance spectroscopy and potentiometric tests. The corrosion resistance of the TiCN and Ti-DLC films significantly improved because of the titanium carbide (TiC) crystals that obstruct the corrosive species penetrating the as-deposited film in the electrolyte atmosphere. TiN exhibited the lowest corrosion resistance because of its low thickness and high volume of defects. The Ti-DLC film showed the lowest corrosion current density (approximately 4.577 μA/cm2) and thickness reduction (approximately 0.12 μm) in different electrolytes, particularly those with high Cl− and H+ concentrations, proving to be the most suitable corrosion protection material for 316L SS substrates.
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