Damage resistance and anticorrosion properties of nanosilica-filled epoxy-resin composite coatings

Conradi, Marjetka; Kocijan, Aleksandra; Zorko, Milena; Verpoest, Ignace

doi:10.1016/j.porgcoat.2014.11.011

Cited by 53 publications

(22 citation statements)

References 33 publications

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“…Thus, the correlation between the roughness and corrosion behavior of a material is not well understood. For example, Conradi et al reported that the superior corrosion resistance of composite coating is due to their high surface roughness and higher hydrophobicity [63]. Toloei et al polished to different roughness values the surface of nickel in order to investigate which is the effect of surface roughness on the corrosion in 0.5 M H 2 SO 4 at 23 ± 1 • C. They found that the corrosion rate of nickel increased with an increase of surface roughness [64].…”

Section: Discussionmentioning

confidence: 99%

Mechanical, In Vitro Corrosion Resistance and Biological Compatibility of Cast and Annealed Ti25Nb10Zr Alloy

Cotruț

Parau

Gherghilescu

et al. 2017

Metals

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Compared to other alloys, Ti6Al4V is the most used in medicine. In recent years, concerns regarding the toxicity of Al and V elements found in the composition of Ti6Al4V have drawn the attention of the scientific community, due to the release of Al or V ions after long term exposure to human body fluids which can lead to a negative response of the human host. Based on this, the aim of the paper was to manufacture a Ti25Nb10Zr alloy consisting of biocompatible elements which can replace Ti6Al4V usage in medical applications. In order to prove that this alloy possessed improved properties, the mechanical, wear and corrosion resistance, wettability, and cell viability were performed in comparison with those of the Ti6Al4V alloy. The corrosion behavior of this new alloy in simulated body fluid (SBF) and Hank solutions is superior to that of Ti6Al4V. The cast Ti25Nb10Zr alloy has a good tribological performance in SBF, while annealed Ti25Nb10Zr alloy is better in Hank solution. Cell viability and proliferation assay after five days indicated that Ti25Nb10Zr presented a good viability and proliferation with values of approximately 7% and 10% higher, respectively, than the ones registered for pure Ti. When compared with Ti6Al4V, the obtained results for Ti25Nb10Zr indicated smaller values with 20% in the case of both tests. Overall, it can be concluded that cell proliferation and viability tests indicated that the biocompatibility of the Ti25Nb10Zr alloy is as good as pure Ti and Ti6Al4V alloy.

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Section: Discussionmentioning

confidence: 99%

Mechanical, In Vitro Corrosion Resistance and Biological Compatibility of Cast and Annealed Ti25Nb10Zr Alloy

Cotruț

Parau

Gherghilescu

et al. 2017

Metals

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“…Among them, polymer coatings are found to be an effective protective strategy for metal surfaces. Inorganic nanoparticles like nanoclay [3][4][5], nano iron oxide [6], nanosilica [7,8], nano zinc oxide (ZnO) [9,10], nano aluminum phosphate [11] and carbon nanofillers like graphene [12,13], carbon black [13], multi-wall carbon nanotube (MWCNT) [13] etc. filled polymer coatings further increase the protection ability.…”

Section: Introductionmentioning

confidence: 99%

A comparative study on long term stability of self-healing epoxy coating with different inorganic nanotubes as healing agent reservoirs

Vijayan¹,

Elgawady²,

Al-Maadeed³

2017

Express Polym. Lett.

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Abstract. Self-healing epoxy coatings were prepared with different nanotubes as reservoirs for epoxy monomer (healing agent). The nanotubes selected for the current study were TiO 2 nanotubes with two different tube diameter (TNT1 and TNT2) and naturally occurring hallyosite nanotubes (HNT). These self-healing coatings were subjected to accelerated weathering exposure. The weathering stability of the coatings were observed. The surface morphology, chemical changes and surface roughness were studied as a function of weathering exposure period. These studies confirmed that the long term stability of the coatings highly depend on the nanotube parameters such as nature, surface area and diameter. It was found that the photocatalytic degradation of epoxy matrix with TiO 2 nanotubes was prominent in TNT1 filled coating compared with their TNT2 variant. The higher possibility of exposure of epoxy monomer encapsulated inside both HNT and TNT2 facilitated the cure reaction with UV light to create new chains during weathering.

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“…3,4 However, to avoid their susceptibility to abrasion 5 and poor resistance to crack propagation, due to a highly cross-linked structure, 6 the basic idea is to enhance the mechanical properties and to promote the surface compatibility of the coating by incorporating different nanofillers. [7][8][9][10][11][12][13][14][15][16] It is mainly the favourable effects of the particle size, the volume fraction and the size distribution on the mechanical properties of composite coatings that have been studied. [17][18][19][20][21][22] Z.…”

Section: Introductionmentioning

confidence: 99%

Corrosion resistance of superhydrophilic and superhydrophobic TiO2/epoxy coatings on AISI 316L stainless steel

Kocijan¹,

Conradi²,

Donik³

2018

Mater. Tehnol.

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Superhydrophilic and superhydrophobic TiO2/epoxy coatings were prepared with as-received TiO2 and fluoroalkylsilane (FAS) functionalised TiO2 nanoparticles and successfully applied to the surface of AISI 316L stainless steel. The wetting properties of the coatings were confirmed with static contact-angle measurements. The corrosion performance of the investigated coatings was studied by electrochemical impedance spectroscopy (EIS). The open-circuit impedance spectra of the AISI 316L stainless steel, the epoxy-coated AISI 316L, the as-received TiO2/epoxy coating on AISI 316L and the FAS-TiO2/epoxy coating on AISI 316L were measured in simulated physiological Hank's solution. Bode plots and Nyquist diagrams were used to evaluate the corrosion properties of the investigated coatings. The results show the enhanced corrosion resistance of surface-modified stainless steel, especially in the case of the superhydrophobic FAS-TiO2/epoxy coating. Keywords: stainless steel, epoxy coating, TiO 2 , electrochemistry Superhidrofilne in superhidrofobne TiO2/epoksi prevleke smo pripravili s TiO2 in fluoroalkilsilan (FAS)-TiO2 nanodelci in jih uspe{no nanesli na povr{ino nerjavnega jekla AISI 316L. Omo~itvene lastnosti prevlek smo potrdili z meritvami kontaktnih kotov. Korozijske lastnosti pripravljenih prevlek smo raziskovali s pomo~jo elektrokemijske impedan~ne spektroskopije (EIS). Impedan~ne spektre pri potencialu odprtega kroga smo merili na jeklu, epoksi prevleki ter superhidrofobni in superhidrofilni TiO2/epoksi prevleki v simulirani fiziolo{ki raztopini (Hankovi raztopini). Korozijske lastnosti omenjenih prevlek smo preu~e-vali s pomo~jo Bodejevih in Nyquistovih diagramov. Rezultati so pokazali izbolj{ano korozijsko odpornost povr{insko obdelanega nerjavnega jekla, najbolj izrazito v primeru superhidrofobne FAS-TiO2/epoksi prevleke.

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Damage resistance and anticorrosion properties of nanosilica-filled epoxy-resin composite coatings

Cited by 53 publications

References 33 publications

Mechanical, In Vitro Corrosion Resistance and Biological Compatibility of Cast and Annealed Ti25Nb10Zr Alloy

Mechanical, In Vitro Corrosion Resistance and Biological Compatibility of Cast and Annealed Ti25Nb10Zr Alloy

A comparative study on long term stability of self-healing epoxy coating with different inorganic nanotubes as healing agent reservoirs

Corrosion resistance of superhydrophilic and superhydrophobic TiO2/epoxy coatings on AISI 316L stainless steel

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