The effect of GNPs on wear and corrosion behaviors of pure magnesium

Turan, Muhammet Emre; Sun, Yavuz; Akgül, Yasin; Türen, Yunus; Ahlatçı, Hayrettin

doi:10.1016/j.jallcom.2017.07.022

Cited by 129 publications

(53 citation statements)

References 32 publications

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“…But, apart from the positive effects of CNT–GNP reinforcement on corrosion resistance, several researchers have also obtained a degraded corrosion resistance of the specimen on these nanofillers reinforcement. Turan et al found a negative impact of graphene reinforcement in magnesium alloy as compared with that of pure magnesium . A similar result was reported by Aung et al where it was revealed that the corrosion rate of magnesium alloys drastically increased on CNT reinforcement .…”

Section: Introductionsupporting

confidence: 63%

“…This cathodic action of the nanocarbon fillers triggered a microgalvanic reaction between the coating‐electrolyte region, assisting a transfer of electrons and adversely affecting the coating. Similar actions of these reinforcements have also been produced in various literatures . Due to the unavailability of the pitting potential of the A‐ and AC‐samples, we have restricted our study to the former part of the polarization graph, i.e., corrosion inhibition behavior of the coatings.…”

Section: Resultsmentioning

confidence: 89%

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Role of the Hybrid Addition of Carbon Nanotubes and Graphene Nanoplatelets on the Corrosion Behavior of Plasma‐Sprayed Aluminum Oxide Nanocomposite Coating

et al. 2019

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The effect of synergistic reinforcement of two types of carbon nanofillers, carbon nanotubes (CNTs) and graphene nanoplatelets (GNPs), on the corrosion behavior of plasma‐sprayed alumina (Al2O3) nanocomposite coating in 3.5 wt% NaCl solution is studied. Incorporation of 1 wt% CNT and 0.5 wt% GNP into the Al2O3 matrix reduces the corrosion current density of the matrix from 2.78 to 0.21 μA cm−2, which drastically leads to a 13 times reduction in the corrosion rate of the Al2O3 matrix as compared with pure Al2O3 coating. The plausible reasons to this improvement are characterized by the filling of gaps, crevices, and microholes in the Al2O3 matrix by CNTs and GNPs and hydrophobic nature as well as chemical inertness of these reinforcements to the aggressive environment. Further, the corrosion products are analyzed by X‐ray diffraction and Raman spectroscopy for a much deeper insight into the mechanism of corrosion protection by these carbonaceous reinforcements. For the first time, the effect of CNT and GNP reinforcement on the corrosion behavior of plasma‐sprayed coatings is investigated.

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Section: Introductionsupporting

confidence: 63%

Section: Resultsmentioning

confidence: 89%

Role of the Hybrid Addition of Carbon Nanotubes and Graphene Nanoplatelets on the Corrosion Behavior of Plasma‐Sprayed Aluminum Oxide Nanocomposite Coating

et al. 2019

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“…1 that relative density values of all alloys were over 99% and sintering process were succesfull. In a similar study by Turan et al [32], it was reported that successful sintering process was carried out with obtaining relative density values over 99%.…”

Section: Evaluation Of Density and Relative Density Datamentioning

confidence: 90%

The microstructure, degradation behavior and cytotoxicity effect of Mg–Sn–Zn alloys in vitro tests

et al. 2020

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In the present study, Mg5Sn-xZn (x = 0, 1, 2, 3, 4, and 5 wt%) alloys in superior biocorrosion properties were produced successfully. A novel mixing technique which prevents contact of magnesium with oxygen has been applied in order to produce Mg-Sn-Zn alloys by hot pressing. According to the obtained results, it was observed that a homogeneous microstructure could be obtained, and the formed secondary phases were uniformly distributed at the grain boundaries. At the same time, it was determined that addition of Zn had a grain refiner effect on microstructure. Therefore, corrosion resistance increased with increasing Zn ratios. Apatite structures were formed on specimen surfaces during degradation as protective layers. The highest corrosion resistance was obtained from TZ54 alloy, in which the apatite structures formed intensively. The addition of Zn to the alloys had no toxic effects on human neuron cells in terms of biocompatibility, but was effective for cell growth.

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“…In 1966, Jost defined the term "tribology" to demonstrate how friction and wear have a significant impact on the British economy [1]. Although, the tribological properties of steels has been investigated by many researchers, tribological characterization of nonferrous metals, especially for magnesium and its alloy, is not wildly studied [2]. Owing to unique properties such as low density and high specific strength, magnesium and its alloys have attracted much attention in automotive and aerospace industries [3].…”

Section: Introductionmentioning

confidence: 99%

Tribochemical Behavior of Pure Magnesium During Sliding Friction

Zhuang

Peng

Wang

et al. 2019

Metals

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Reciprocating sliding friction tests were conducted on pure magnesium using a UMT-II tester. The tribo-chemical behavior was characterized using X-ray photoelectron spectroscopy (XPS) and electron probe micro-analyzer (EPMA), which showed that the tribo-chemical behavior of pure magnesium was due to a tribo-oxidation reaction. At room temperature, the debris layer on the worn surface contained Mg(OH)2, MgO, and MgCO3. According to the reciprocating sliding friction mechanism, the decomposition of MgCO3 into MgO should occur. XPS results revealed that the surface oxide layer, containing Mg(OH)2, and MgO, acted as a third layer to protect the surface. Apparently, Mg(OH)2·nH2O was the main tribo-chemical product of pure magnesium under sliding friction.

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The effect of GNPs on wear and corrosion behaviors of pure magnesium

Cited by 129 publications

References 32 publications

Role of the Hybrid Addition of Carbon Nanotubes and Graphene Nanoplatelets on the Corrosion Behavior of Plasma‐Sprayed Aluminum Oxide Nanocomposite Coating

Role of the Hybrid Addition of Carbon Nanotubes and Graphene Nanoplatelets on the Corrosion Behavior of Plasma‐Sprayed Aluminum Oxide Nanocomposite Coating

The microstructure, degradation behavior and cytotoxicity effect of Mg–Sn–Zn alloys in vitro tests

Tribochemical Behavior of Pure Magnesium During Sliding Friction

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