Grain size effect in corrosion behavior of electrodeposited nanocrystalline Ni coatings in alkaline solution

Wang, Liping; Zhang, Junyan; Gao, Yan; Xue, Qunji; Hu, Litian; Xu, Tao

doi:10.1016/j.scriptamat.2006.04.009

Cited by 208 publications

(94 citation statements)

References 19 publications

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“…33) This is really challenging task, and has been tried with a wide range of grain size that is systematically changed. [33][34][35][36][37][38][39][40][41][42][43][44][45][46][47][48][49][50][51][52] Di Schino et al [41][42][43] investigated the effect of grain size on corrosion of several austenitic stainless steels, claiming that the rate of uniform corrosion increase by grain size reduction whereas the rate of intergranular corrosion is opposite. Table 1 lists the selected papers which investigated effect of grain size that spans for conventional range controlled by thermomechanical processing.…”

Section: Introductionmentioning

confidence: 99%

Corrosion of Ultrafine Grained Materials by Severe Plastic Deformation, an Overview

Miyamoto

2016

Mater. Trans.

114

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Corrosion of ultra ne grain (UFG) materials by severe plastic deformation (SPD) is reviewed in light of the existing literature and microstructural change. Fortunately, by holistic survey of the literature, it seems likely that grain re nement by SPD, while enhancing mechanical properties, does not compromise the overall corrosion resistance, and in many case, improve it in comparison with coarse-grained counterparts, although there are some contradictory results within the same materials and same environment. The degree of impact of UFG formation on corrosion is highest in stainless steels followed by aluminum and magnesium alloys whereas it is relatively marginal in pure copper and titanium. The effect of UFG formation by SPD on corrosion is imparted by not only grain re nement, but also other microstructural change occurring commonly in SPD in general and unique to each speci c SPD method. In this review, an attention is paid speci cally to the former case, and this includes shuf ing or redistribution of chemical inhomogeneity into a ner scale, deformation-induced grain boundaries and high internal stress stemming from these grain boundaries. The literature on stress corrosion cracking (SCC) of UFG materials are de nitely insuf cient to nd the general trends, more studies are waited.

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Section: Introductionmentioning

confidence: 99%

Corrosion of Ultrafine Grained Materials by Severe Plastic Deformation, an Overview

Miyamoto

2016

Mater. Trans.

114

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“…However, the microhardness decreased to 421 HV25 with further increasing the TiO2 nanoparticle loading to 25 g/L. It could be found that the Ni-TiO2 coating with the minimum crystallite size exhibited the maximum microhardness [12,13,14]. …”

Section: Methodsmentioning

confidence: 97%

EFFECT OF TiO2 NANOPARTICLES IN NI MATRIX ON MECHANICAL AND CORROSION RESISTANCE PROPERTIES

Mekkaoui

Saied

Belahssen

et al. 2017

Acta Metall Slovaca

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Nickel (Ni) is one of the most important hard coatings. Improvement in its tribological and mechanical properties would greatly enhance its use in industry. Nanocomposite coatings of metals with various reinforced nanoparticles have been developed in last few decades. Titania (TiO2) exhibit excellent mechanical properties. It is believed that TiO2 incorporation in Ni matrix will improve the properties of Ni coatings significantly. The main purpose of the current work is to investigate the mechanical and anti-corrosion properties of the electroplated Nickel nanocomposite with a different percentage of TiO2. The results showed that the content of TiO2 and the microhardness in the Ni-TiO2 coatings first increased and reached the maximum at the loading of 20 g/L, then decreased, due to agglomeration of dioxide of Titania for high concentration of TiO2. The [200] preferred orientation for Ni pure gradually evolved to [111] orientation with increasing TiO2 nanoparticle loading. At 20 g/L of titania, we obtained the minimum crystallite size (27 nm). The anti-corrosion property of nanocomposite coating was carried out in 3.5 % NaCl electrolyte, and the result also showed that the nanocomposite coatings improve the corrosion resistance significantly. This present work reveals that incorporation of TiO2 in nickel nanocomposite coating improves corrosion resistance and mechanical properties of both hardness and corrosion resistance performances, and the improvement becomes at it maximum for 20 g/L of TiO2.

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“…According to classical corrosion theory, materials with nanocrystalline nature have poorer corrosion properties than bulk materials due to their higher number of electrochemical corrosion cells [31]. However, it was reported in several other studies that samples with grain sizes in the nanometer range acted differently than their bulk counterparts and the difference is mainly related to the grain size and volume fraction ratio [32]. The effect of grain size on the corrosion behavior of electrodeposited bulk nanocrystalline Ni with different grain sizes (from 16 nm to 2 µm) were emphasized in different corrosion media (NaOH and NaCl) and the results show that the Ni exhibits improved corrosion resistance with the decrease of grain size, which can be reasonably explained by the positive effect of high-density grain boundaries [23].…”

Section: Corrosion Morphologymentioning

confidence: 99%

Effect of Different Welding Processes on Electrochemical and Corrosion Behavior of Pure Nickel in 1 M NaCl Solution

Wang

Zhang

et al. 2017

Metals

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Abstract:A plasma arc welding (PAW)-tungsten inert gas (TIG) hybrid welding process is proposed to weld pure nickel. In PAW-TIG welding, the arc of the PAW was first to be ignited, then TIG was ignited, while in PAW welding, only the PAW arc was launched. This paper investigated the effect of different welding processes on electrochemical and corrosion performance of between a pure nickel joint and a base metal in an aerated 1 M NaCl solution, respectively. The average grain size of the joint fabricated by PAW welding (denoted as J P joint) is 463.57 µm, the joint fabricated by PAW-TIG welding(denoted as J P-T joint) is 547.32 µm, and the base metal (BM) is 47.32 µm. In this work, the passivity behaviors of samples were characterized for two welding processes by electrochemical impedance spectroscopy (EIS), open circuit potential versus immersion time (OCP-t), and the potentiodynamic polarization plots. EIS spectra, attained with different immersion times, were analyzed and fitted by an equivalent electrical circuit. Photomicrographs of BM, J P , and J P-T were also taken with a scanning electron microscope (SEM) to reveal the morphological structure of the pit surfaces. Electrochemical tests show that the sequence of the corrosion resistance is BM > J P > J P-T . The size and quantity of the hemispherical corrosion pits of all samples are different. The corrosion morphology observations found a consistency with the consequence of the electrochemical measurements. The results show that an increase of the grain dimensions due to different heat treatments decreased the pure nickel stability to pitting corrosion.

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Grain size effect in corrosion behavior of electrodeposited nanocrystalline Ni coatings in alkaline solution

Cited by 208 publications

References 19 publications

Corrosion of Ultrafine Grained Materials by Severe Plastic Deformation, an Overview

Corrosion of Ultrafine Grained Materials by Severe Plastic Deformation, an Overview

EFFECT OF TiO2 NANOPARTICLES IN NI MATRIX ON MECHANICAL AND CORROSION RESISTANCE PROPERTIES

Effect of Different Welding Processes on Electrochemical and Corrosion Behavior of Pure Nickel in 1 M NaCl Solution

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