Corrosion behaviors and electrochemical mechanisms of laser-cladded NiCrAlMo/nano-CeO2 composite coatings in chloride-enriched environments
Corrosion behaviors and electrochemical mechanisms of laser-cladded NiCrAlMo/nano-CeO2 composite coatings in chloride-enriched environments
复制标题
富氯环境中激光熔覆NiCrAlMo/纳米CeO2复合涂层的腐蚀行为及电化学机制
DOI：
10.1177/09544054221077782
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发表时间：
2022-02
期刊：
影响因子：
--
通讯作者：
Wang Kun
中科院分区：
文献类型：
--
作者：
Chen Haixiang;Wang Kun
Q235钢是一种在现代工业结构中广泛应用的材料。 ORS和电化学机制The results showed that adding nano-CeO2 is conductive for removing residual gas pores and for refinement of grains, effectively improving the passive and electrochemical properties of the NiCrAlMo coating in both chloride-enriched solutions. Furthermore, the NiCrAlMoCeO2 composite coating exhibits a significantly reduced icorr of 0.4919 µA cm2 and an increased resistance (Rp) of 175,310 Ω cm2 in a neutral solution,证明其在海洋工程结构中应用的良好抗腐蚀特性。
Q235 steel is a low-cost material widely applied in modern industrial constructions. However, electrochemical degradation is the main drawback for its applications in chloride-enriched environments. To address this problem, NiCrAlMo and NiCrAlMo + 2 wt% nano-CeO2 composite coatings were laser-cladded on Q235 steel substrates. Characterization methods were used to investigate the microstructures, corrosion behaviors, and electrochemical mechanisms of the obtained coatings. The results showed that adding nano-CeO2 is conductive for removing residual gas pores and for refinement of grains, effectively improving the passive and electrochemical properties of the NiCrAlMo coating in both chloride-enriched solutions. Furthermore, the NiCrAlMoCeO2 composite coating exhibits a significantly reduced icorr of 0.4919 µA cm2 and an increased resistance ( Rp) of 175,310 Ω cm2 in a neutral solution, demonstrating the good anti-corrosion properties for its application in marine engineering structures.
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期刊：
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