Prevention of Corrosion By Means Other Than Protective Coatings

LaQue, F. L.

doi:10.5006/0010-9312-6.2.72

Cited by 9 publications

(13 citation statements)

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“…In the nanoscale galvanic redox system fabricated to create SNPSA, the cathodic AgNP/PLGA layer showed a positive SP that was dependent on the proportion of AgNPs in the PLGA layer (Figure 2e). In contrast, the SNPT samples were not likely to develop the galvanic redox system because the electrode potential of the passive oxidized titanium surface is close to that of Ag in the galvanic series, 38,39 which impedes electron transfer from titanium to the AgNPs (Figure 1c). As a result, in comparison with SNPSA materials, SNPT materials had a less positive SP value (Figure 2).…”

Section: Discussionmentioning

confidence: 99%

Using an Engineered Galvanic Redox System to Generate Positive Surface Potentials that Promote Osteogenic Functions

Zhang

Zheng

et al. 2018

ACS Appl. Mater. Interfaces

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Successful osseointegration of orthopaedic and orthodontic implants is dependent on a competition between osteogenesis and bacterial contamination on the implant–tissue interface. Previously, by taking advantage of the highly interactive capabilities of silver nanoparticles (AgNPs), we effectively introduced an antimicrobial effect to metal implant materials using an AgNP/poly(DL-lactic-co-glycolic acid) (PLGA) coating. Although electrical forces have been shown to promote osteo-genesis, creating practical materials and devices capable of harnessing these forces to induce bone regeneration remains challenging. Here, we applied galvanic reduction–oxidation (redox) principles to engineer a nanoscale galvanic redox system between AgNPs and 316L stainless steel alloy (316L-SA). Characterized by scanning electron microscopy, energy-dispersive X-ray spectroscopy, atomic force microscopy, Kelvin probe force microscopy, and contact angle measurement, the surface properties of the yield AgNP/PLGA-coated 316L-SA (SNPSA) material presented a significantly increased positive surface potential, hydrophilicity, surface fractional polarity, and surface electron accepting/donating index. Importantly, in addition to its bactericidal property, SNPSA’s surface demonstrated a novel osteogenic bioactivity by promoting peri-implant bone growth. This is the first report describing the conversion of a normally deleterious galvanic redox reaction into a biologically beneficial function on a biomedical metal material. Overall, this study details an innovative strategy to design multifunctional biomaterials using a controlled galvanic redox reaction, which has broad applications in material development and clinical practice.

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Section: Discussionmentioning

confidence: 99%

Using an Engineered Galvanic Redox System to Generate Positive Surface Potentials that Promote Osteogenic Functions

Zhang

Zheng

et al. 2018

ACS Appl. Mater. Interfaces

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“…LaQue 15 indicated the effect of temperatures on increasing corrosion of steel by seawater without supplementary effect of marine organisms. He supported this effect by data which he fitted to a linear function.…”

Section: Modelling Of Different Factors Affecting Corrosion Under Mar...mentioning

confidence: 99%

“…Based on some corrosion tests the corrosion rate of carbon steel in seawater at a temperature of 25uC was nearly double than at 10uC. 4 LaQue 15 showed the effect of temperatures in increasing corrosion of steel by seawater without supplementary effect of marine organisms.…”

Section: Introductionmentioning

confidence: 99%

Effect of environmental factors on steel plate corrosion under marine immersion conditions

Soares

Garbatov

Zayed

2011

Corrosion Engineering, Science and Technology

105

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This study considers different environmental factors affecting corrosion under marine immersion conditions and proposes a mathematical model incorporating their effects on corrosion degradation through the ship life. The study adopts a nonlinear function of time as the reference corrosion model calibrated with operational corrosion data at long term average conditions to represent the corrosion behaviour under standard environmental conditions. Based on previously obtained field data, a corrosion deterioration model is developed, in which a correction factor is proposed to account for the effect of each environmental factor. These multiplicative factors correct the standard prediction of corrosion degradation to obtain short term estimates under any specific environmental condition. Then, a long term estimate of corrosion degradation is determined by summing the short term corrosion contributions during the various discrete time periods in which the ship life can be decomposed. A numerical example of a representative application of the new empirical based corrosion model is presented, to demonstrate how to apply the model.

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“…Structures and components will produce corrosion fatigue under the synergistic interaction of alternating stress and the corrosion medium. 1,2 In the corrosion fatigue failure problem, the fatigue crack propagation (FCP) life accounts for about 90% of the total life, which plays a decisive role in the total life assessment of the structure.…”

Section: Introductionmentioning

confidence: 99%

Effect of corrosion on the fatigue crack propagation properties of butt weld with G20Mn5QT cast steel and Q355D steel in 3.5‐wt% NaCl solution

Han,

Li,

et al. 2023

Fatigue Fract Eng Mat Struct

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The corrosion fatigue crack propagation (FCP) of the butt weld with G20Mn5QT cast steel and Q355D steel in 3.5‐wt% NaCl solution was investigated experimentally. Considering the influences of stress ratio and loading frequency, the corrosion FCP rate curve was obtained. The results indicated that the corrosion FCP rate in the corrosion environment is three times that in air. Increasing the stress ratio or decreasing the loading frequency will increase the corrosion FCP rate. The fracture morphology of the specimens in the corrosion environment had more corrosion pits and intergranular characteristics due to anodic dissolution than that in air. Anodic dissolution and hydrogen embrittlement jointly promoted the corrosion FCP of butt weld in simulated seawater. The corrosion FCP rate model was established considering the effects of stress ratio and loading frequency.

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Prevention of Corrosion By Means Other Than Protective Coatings

Cited by 9 publications

References 0 publications

Using an Engineered Galvanic Redox System to Generate Positive Surface Potentials that Promote Osteogenic Functions

Using an Engineered Galvanic Redox System to Generate Positive Surface Potentials that Promote Osteogenic Functions

Effect of environmental factors on steel plate corrosion under marine immersion conditions

Effect of corrosion on the fatigue crack propagation properties of butt weld with G20Mn5QT cast steel and Q355D steel in 3.5‐wt% NaCl solution

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