Optimisation of microstructure and corrosion resistance of Ni-Ti composite coatings by the addition of CeO 2 nanoparticles

Wang, Lianbo; Chen, Ming; Liu, Huabing; Jiang, Chuanhai; Ji, Vincent; Moreira, Florent

doi:10.1016/j.surfcoat.2017.10.049

Cited by 33 publications

(6 citation statements)

References 36 publications

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“…Second, the circuitous path length of the aggressive ions to the substrate was also extended by reduced crystallite size, 38 and the simultaneously increased grain boundaries with well-dispersed Mo element provided more nucleation sites for the formation of corrosion products, which resulted in a more uniform and dense protective film on the coating surface. 39 Third, the oxide film was further thickened by Cerich hydroxides and oxides obtained from equations ( 9) to (12) [40][41][42] :…”

Section: Electrochemical Mechanismsmentioning

confidence: 99%

Corrosion behaviors and electrochemical mechanisms of laser-cladded NiCrAlMo/nano-CeO₂ composite coatings in chloride-enriched environments

Chen

Wang

2022

Proceedings of the Institution of Mechanical Engineers, Part B:

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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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Section: Electrochemical Mechanismsmentioning

confidence: 99%

Corrosion behaviors and electrochemical mechanisms of laser-cladded NiCrAlMo/nano-CeO₂ composite coatings in chloride-enriched environments

Chen

Wang

2022

Proceedings of the Institution of Mechanical Engineers, Part B:

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“…where ba and bc represent the slopes of the anodic and cathodic Tafel's equations, respectively, and ICorr represents the corrosion current. The hydrogen evolution reaction usually occurs by the polarization curves, in the cathodic region, because the solution is aqueous, while metal dissolution/passivation and oxygen evolution occur in the anodic region 33,34 . When zirconium content increased, the corrosion potential was shifted to positive values.…”

Section: Characterization Of the Alloysmentioning

confidence: 99%

Influence of Zirconium Percentage on Microhardness and Corrosion Resistance of Ti50 Ni50-xZrx Shape Memory Alloys

et al. 2019

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To obtain high temperature shape memory alloys of the lower cost Ni-Ti-X system, elements such as Hf and Zr are introduced to modify the thermal and mechanical properties of these alloys. This work studied the production and characterization of Ti 50 Ni 50-x Zr x alloys (x = 0, 5, 10 at.%) with the aim of improving their thermal, mechanical and corrosion resistance properties. In the resulting alloys, transformation of phase B2 into phase B19' occurred in a single stage. The addition of zirconium led to an increase of transformation temperatures, as well as the appearance of second phase particles in the grain boundaries of the matrix. The increase in zirconium percentage favored the increase of corrosion resistance from 520.23KΩ to 1007.30KΩ and of microhardness from 346HV to 543HV for the N0 and N10 alloys, respectively.

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“…The presence of molybdenum disulfide resulted in reduction of wear debris and micro-cracks in the worn surface of aluminum 2219-molybdenum disulfide composite [40]. Cerium dioxide is a wellknown substance for improving corrosion resistance of alloys [43][44][45][46][47][48]. The amount of cerium dioxide controlled the oxide layer thickness by stimulating the initiation of oxide layer in lead-cerium dioxide coating and thereby reduced the corrosion when subjected to electromagnetic corrosion in acid medium.…”

Section: Introductionmentioning

confidence: 99%

Characterization of novel molybdenum disulfide and cerium dioxide reinforced hybrid aluminum matrix composites fabricated by friction stir processing

Maji

Ghosh

Nath

et al. 2022

Materialwissenschaft Werkst

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Aluminum matrix composites are widely used for making structural components in the aerospace and automobile industries. In order to sustain the operational demand, excellent anti-wear and corrosion resistance properties are required in the composites. To achieve this, molybdenum disulfide and cerium dioxide reinforced hybrid aluminum-based composites are fabricated by friction stir processing at different rotational speed and number of passes. Due to grain refinement and better particle distribution at high rotational speed and 2 pass, tensile strength and microhardness improves by sacrificing ductility. However, deterioration of mechanical properties than the as-received alloy is evident in all the composites due to dissolvement of strengthening precipitates. With increasing tool rotational speed, severe adhesion type of wear shifts to abrasion wear and the wear resistance also improves. All the composites show similar corrosion behavior as the unprocessed alloy. However, the corrosion parameters such as corrosion potential and corrosion current density were influenced by processing conditions. The composite produced with 1500 min À 1 and 2 pass exhibits highest wear and corrosion resistance.

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Optimisation of microstructure and corrosion resistance of Ni-Ti composite coatings by the addition of CeO 2 nanoparticles

Cited by 33 publications

References 36 publications

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

Influence of Zirconium Percentage on Microhardness and Corrosion Resistance of Ti50 Ni50-xZrx Shape Memory Alloys

Characterization of novel molybdenum disulfide and cerium dioxide reinforced hybrid aluminum matrix composites fabricated by friction stir processing

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Optimisation of microstructure and corrosion resistance of Ni-Ti composite coatings by the addition of CeO 2 nanoparticles

Cited by 33 publications

References 36 publications

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

Influence of Zirconium Percentage on Microhardness and Corrosion Resistance of Ti50 Ni50-xZrx Shape Memory Alloys

Characterization of novel molybdenum disulfide and cerium dioxide reinforced hybrid aluminum matrix composites fabricated by friction stir processing

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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