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Electrochemical corrosion characteristics of hierarchical O-TiN coating on 304L steel substrate
Surface & Coatings Technology ( IF 5.3 ) Pub Date : 2022-01-05 , DOI: 10.1016/j.surfcoat.2021.128079
Gaurav Malik 1 , Jignesh Hirpara 1 , Ankit Kumar 2 , Mritunjay Kumar Pandey 3 , Ramesh Chandra 1
Affiliation  

The present study estimates the corrosion and wetting properties of sputter deposited osbornite titanium nitride (O-TiN) coating onto a stainless steel (SS-304). The wettability, surface morphology, chemical composition and corrosion characteristics of the treated samples were studied in detail. The performances of the O-TiN@SS-304 coating were compared to polished SS-304 substrate. The results show that the nano-cluster growth of O-TiN coating alter the hydrophilic surface (θw ~ 78.2°) of SS-304 into hydrophobic surface (95.4°), which promote the aqueous passivation behavior. The corrosion testing for a long-term immersion (6 h) illustrated that the coated sample shows greater corrosion resistance than the SS-304. This greater corrosion resistance is accountable for low degree of corrosion rate of around 16.7 × 10−3 mm/year of the coated sample. Therefore, the O-TiN nano-cluster coating with a homogeneously ordered hydrophobic surface is projected as a long-lasting, stable and corrosion resistive for industries, when immersed in salinity media [3.5% NaCl] and useful for extending the protecting applications in other relevant material fields.



中文翻译:

304L钢基体分层O-TiN涂层的电化学腐蚀特性

本研究估计了溅射沉积在不锈钢 (SS-304) 上的钙钛矿氮化钛 (O-TiN) 涂层的腐蚀和润湿性能。详细研究了处理后样品的润湿性、表面形貌、化学成分和腐蚀特性。将 O-TiN@SS-304 涂层的性能与抛光的 SS-304 基板进行了比较。结果表明,O-TiN涂层的纳米团簇生长将SS-304的亲水表面(θ w ~ 78.2°)转变为疏水表面(95.4°),促进了水性钝化行为。腐蚀试验长期浸泡(6 小时)表明,涂层样品比 SS-304 具有更高的耐腐蚀性。这种更高的耐腐蚀性是造成涂层样品腐蚀速率低的原因,约为 16.7 × 10 -3毫米/年。因此,当浸入盐度介质 [3.5% NaCl] 中时,具有均匀有序疏水表面的 O-TiN 纳米簇涂层被认为是一种持久、稳定和耐腐蚀的工业材料,可用于扩展其他领域的保护应用。相关材料领域。

更新日期:2022-01-16
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