A new method to determine the synergistic effects of area ratio and microstructure on the galvanic corrosion of LAS A508/309 L/308 L SS dissimilar metals weld

Okonkwo, Bright O.; Ming, Hongliang; Wang, Jianqiu; Han, En‐Hou; Rahimi, Ehsan; Davoodi, Ali; Hosseinpour, Saman

doi:10.1016/j.jmst.2020.10.044

Cited by 45 publications

(21 citation statements)

References 49 publications

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“…Moreover, of all the materials that have been studied, the 4150 steels exhibited the lowest corrosive resistance. Similar behaviour was also observed in [19], whereby decreasing the anode/cathode area ratio a higher current density was obtained. Additionally, in [20] the galvanic corrosion behaviour of laser-welded austenitic stainless steel with duplex or super duplex stainless steel was evaluated.…”

Section: Sample Preparationsupporting

confidence: 83%

Galvanic Corrosion Behaviour of Different Types of Coatings Used in Safety Systems Manufacturing

Burduhos-Nergis

Bejinariu

2021

Coatings

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Worker safety is one of the main aspects to be taken into account in any activity carried out at work. When we talk about the safety of the worker at activities carried out at height, the condition and characteristics of the personal protective equipment against falling from a height are one of the main causes of work accidents resulting in serious injuries or death. Carabiners are the main components of the safety system; their role is to connect the other components of the system or to make the connection between the system and the anchor point. Therefore, to be used safely, the carabiners’ material must have high corrosion resistance in different environments. This paper is part of a complex study that aims to improve the corrosion properties of carbon steel used in the manufacture of carabiners. Previous studies have shown that the corrosion resistance of carbon steel in various corrosive environments has been improved by the deposition of different types of phosphate layers, as well as other subsequently deposited layers. The aim of this paper is to study the galvanic corrosion evaluation between different galvanic couples (duralumin-coated samples, aluminium bronze-coated samples, and carbon steel-coated samples) tested in three different corrosive media. Moreover, the study approaches for the first time the galvanic corrosion of systems that can be formed between the materials used in the manufacture of carabiners. Accordingly, it was observed that, overall, the samples coated with a Zn phosphate layer exhibited the best performance in all the corrosive environments (saltwater and fire extinguishing solution).

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Section: Sample Preparationsupporting

confidence: 83%

Galvanic Corrosion Behaviour of Different Types of Coatings Used in Safety Systems Manufacturing

Burduhos-Nergis

Bejinariu

2021

Coatings

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“…CNTs are known to have excellent conductivity, thus a faster degradation rate is monitored in Zn-CNTs compared with Zn. On the other hand, the corrosion rates of metals are related to the area ratio of the cathode to anode, and a higher ratio implies a faster corrosion rate. , CNTs have a large aspect ratio, which is beneficial to extend the contact ratio of the cathode to the anode. This may also contribute to the acceleration in the degradation rate of Zn-CNTs.…”

Section: Resultsmentioning

confidence: 99%

Rivet-Inspired Modification of Carbon Nanotubes by In Situ-Reduced Ag Nanoparticles To Enhance the Strength and Ductility of Zn Implants

Shuai

Dong

Yang

et al. 2021

ACS Biomater. Sci. Eng.

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Zinc shows promise for bone repair applications, while its strength and ductility require to be improved. Carbon nanotubes (CNTs) are exceptional reinforcements due to their superior strength, ultrahigh Young’s modulus, and large aspect ratio. However, their strong agglomeration and weak interfacial bonding with the matrix are key bottleneck problems restricting the reinforcing effect. In this study, Ag nanoparticles were in situ reduced on CNTs and then the CNT@Ag powders were used to prepare Zn-CNT@Ag implants by laser powder bed fusion. Results showed that Ag reacted with Zn to form a “knot”-like AgZn3 phase. It had the same lattice structure (HCP) with Zn, which indicated a good lattice matching with the matrix, thus improving the dispersion of CNTs. More significantly, the knot played a “rivet” role and enhanced the load transfer capacity, which advantaged the CNT strengthening effects by assisting in transferring the load. Moreover, it enhanced the heterogeneous nucleation effects during solidification, which weakened the texture strength of the matrix and thus increased the ductility by improving the sliding capacity. The compressive yield strength, ultimate tensile strength, and elongation of the Zn-CNT@Ag implant were increased by 22, 26, and 17% in comparison to Zn-CNTs. Moreover, the Zn-CNT@Ag implant exhibited favorable antibacterial activity with a bacterial inhibition rate of 87.79%. Additionally, it also exhibited a suitable degradation rate and acceptable biocompatibility.

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“…When the iron-based metals are submerged in the present of corrosion solutions, such as food waste fermentation solution and waste leachate, the metal corrosion begins and the surface of metals appears the rust. Generally, if the surface rust of metals can be accurately recognized, the corrosion degree of metals can be assessed [3]. However, the surface rust of different metals is difficult for recognition, and thus the surface rust of metals has not be regard as a quantity index for metal corrosion [4].…”

Section: Introductionmentioning

confidence: 99%

Corrosion assessment of iron-based metals by the rust recognition method

Shen¹,

Wu²,

Qiu³

2023

International Conference on Image, Signal Processing, and Pattern Recognition (ISPP 2023)

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This paper describes a machine visual recognition method for the surface rust recognition of metals. The corrosion images of iron-based metals (HT200, Q345B, 45 steel and 304) under the specific conditions can be accurately recognized by the proposed method. Based on the rust recognition method, the corrosion area percentage (CAP) of each metal block is calculated. The CAP results indicate that HT200, Q345B and 45 steel are rapidly corroded (CAP over 86 % after 192 hours), but 304 is slightly corroded (CAP: 1.7 % after 192 hours) under the periodic immersion condition. The correlation analysis between CAP values and actual weigh loss values is carried out to evaluate the proposed method. The results show that there is a high correlation between CAP values and actual weight loss values of each metal block. Therefore, CAP values calculated from the rust recognition method can quantitatively identify the corrosion degree of the metal blocks. No matter what type of the iron-based materials is, the corrosion degree of metals can be assessed by the rust recognition method. Even the serious corroded metal blocks, the corrosion degree can be determined through the surface rust recognition.

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A new method to determine the synergistic effects of area ratio and microstructure on the galvanic corrosion of LAS A508/309 L/308 L SS dissimilar metals weld

Cited by 45 publications

References 49 publications

Galvanic Corrosion Behaviour of Different Types of Coatings Used in Safety Systems Manufacturing

Galvanic Corrosion Behaviour of Different Types of Coatings Used in Safety Systems Manufacturing

Rivet-Inspired Modification of Carbon Nanotubes by In Situ-Reduced Ag Nanoparticles To Enhance the Strength and Ductility of Zn Implants

Corrosion assessment of iron-based metals by the rust recognition method

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