Long-Term Potentiodynamic Testing and Tribometric Properties of Amorphous Alloy Coatings under Saline Environment

Iqbal, Amjad; Iqbal, Aqib; Moskal, G.; Yasir, Muhammad; Al-Mansour, Abdullah I; Khan, Mohammad Amir; Alam, Shamshad; Shahbaz, Muhammad; Zia, Adeel; Ejaz, Ahsan

doi:10.3390/molecules27041421

Cited by 8 publications

(4 citation statements)

References 38 publications

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“…The preparation of useful materials in tribology is also an interesting application of plastic waste recycling (Iqbal et al, 2020;Iqbal et al, 2022). This is another alternative to disposing of plastic waste and recycles it to develop lubricating oil for tribological applications.…”

Section: Pyrolysis and In-line Steam Reformingmentioning

confidence: 99%

A review on gasification and pyrolysis of waste plastics

et al. 2023

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Gasification and pyrolysis are thermal processes for converting carbonaceous substances into tar, ash, coke, char, and gas. Pyrolysis produces products such as char, tar, and gas, while gasification transforms carbon-containing products (e.g., the products from pyrolysis) into a primarily gaseous product. The composition of the products and their relative quantities are highly dependent on the configuration of the overall process and on the input fuel. Although in gasification, pyrolysis processes also occur in many cases (yet prior to the gasification processes), gasification is a common description for the overall technology. Pyrolysis, on the other hand, can be used without going through the gasification process. The current study evaluates the most common waste plastics valorization routes for producing gaseous and liquid products, as well as the key process specifications that affected the end final products. The reactor type, temperatures, residence time, pressure, the fluidizing gas type, the flow rate, and catalysts were all investigated in this study. Pyrolysis and waste gasification, on the other hand, are expected to become more common in the future. One explanation for this is that public opinion on the incineration of waste in some countries is a main impediment to the development of new incineration capacity. However, an exceptional capability of gasification and pyrolysis over incineration to conserve waste chemical energy is also essential.

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Section: Pyrolysis and In-line Steam Reformingmentioning

confidence: 99%

A review on gasification and pyrolysis of waste plastics

et al. 2023

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“…The degradation of blade materials and other metal components due to hot corrosion and sulfidation corrosion can both reduce their usable lives and raise the possibility of component failure. Therefore, in order to ensure the dependability and safety of industrial machinery and other systems subjected to high-temperature, acidic conditions, it is crucial to comprehend and minimize the impacts of hot corrosion and sulfidation corrosion [78].…”

Section: Preserving Metallic Materials Against Oxidation and Hot Corr...mentioning

confidence: 99%

“…High-velocity oxy-fuel (HVOF) spraying approach uses a combustion flame to spray TBC particles onto the substrate at extremely high speeds. With this technique, coatings with great substrate adherence, high density, and low porosity can be created [105][106][107].…”

Section: Thermally Sprayed Coatingsmentioning

confidence: 99%

Recent Development in Advance Ceramic Materials and Understanding the Mechanisms of Thermal Barrier Coatings Degradation

Iqbal

Moskal

2023

Arch Computat Methods Eng

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Metallic alloys' behavior at high temperatures, especially their response to corrosion and formation of protective surface layers, has long been a focus of scientific inquiry. Although certain alloy compositions require an initiation period before hot corrosion advances to the propagation stage, no combination of alloys can be considered impervious to hot corrosion indefinitely. The capacity of nickel-based materials to tolerate extreme circumstances such high temperatures, acidity, corrosion, and scratching is highly valued. However, they are unable to satisfy the strict demands of today's high-temperature applications. The durability of thermal barrier coatings (TBCs), which are prone to oxidation, rust, and degradation from sulphates and foreign object damage, has been the subject of recent study. For sophisticated ceramic materials exposed to high temperatures, hot rust degradation poses a considerable challenge. The main objective of this study is to investigate the effects of severe degradation on several advanced ceramic material types and their level of advancement. The purpose of the inquiry is to comprehend the deteriorating processes at the long term working condition, including the function of oxidation and liquid salts. Additionally, we investigate the effects of temperature, environment, and contact duration on the heated weathering behavior of earthenware. Finally, we discuss strategies for mitigating hot corrosion degradation in ceramics, such as protective coatings like new design of TBCs, doping, and composition optimization. This paper aims to offer a thorough understanding of the hot corrosion behavior of ceramics, which is crucial for developing durable materials suitable for high-temperature applications. Additionally, it explores the fabrication of protective coatings and addresses the challenges faced in this regard. The insights gained from this research can contribute to the advancement of resilient ceramic fabrics and the development of effective protective coatings.

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“…Herein, a seven-element alloy system, FeCrNiMoCBSi, is proposed as an alternative to a thermal spray coating. In the open literature, the application of an iron-based amorphous coating to improve the corrosion and wear resistance of structural components is an important issue and has received much attention in the past few years [45][46][47]. In this study, the corrosion behaviors of the coated samples were studied in three distinct solutions using potentio-polarization tests and the results were compared with those of the 316L substrate.…”

Section: Introductionmentioning

confidence: 99%

The Corrosion and Wear-Corrosion of the Iron-Base Amorphous Coating Prepared by the HVOF Spraying

Liao

Jian²,

Tsay

2023

Metals

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In this work, the corrosion behaviors of an iron-based amorphous coating produced by high-velocity oxy-fuel (HVOF) spraying were investigated. Potentiodynamic and potentiostatic polarization and corrosion pin-on-ring (corrosion-wear) tests were conducted to evaluate the corrosive properties of the coating as compared with the 316L substrate. The corrosion behaviors of the 316L substrate and coated sample were tested in 3.5 wt.% NaCl, 1 M HCl, and 0.5 M H2SO4 solutions. In the 3.5 wt.% NaCl and 1 M HCl solutions, the corrosion resistance of the coating was a little inferior or equivalent to that of the 316L substrate after potentiodynamic polarization tests. In the 0.5 M H2SO4 solution, the two tested samples exhibited wide passivated zones in the polarization curves. In such a mild acid, the corrosion resistance of the 316 substrate was superior to that of the amorphous coating, possibly due to the presence of defects in the coating. After potentiodynamic polarization tests, the linkage of initial fine pits into large, deep pores was seen in the corroded 316L substrate. By contrast, extensive corrosion along with preferentially corroded defective sites was seen in the coating. Moreover, the coating exhibited a much higher resistance to corrosion-wear, or low weight loss, in 3.5 wt.% NaCl solution. After the corrosion-wear tests, deep furrows were present in the 316L substrate, whereas a rubbed smooth surface and a corroded zone were seen in the coating. The greater weight loss of the 316L substrate confirmed its poor resistance to corrosion-wear relative to the amorphous coating in 3.5 wt.% NaCl solution.

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Long-Term Potentiodynamic Testing and Tribometric Properties of Amorphous Alloy Coatings under Saline Environment

Cited by 8 publications

References 38 publications

A review on gasification and pyrolysis of waste plastics

A review on gasification and pyrolysis of waste plastics

Recent Development in Advance Ceramic Materials and Understanding the Mechanisms of Thermal Barrier Coatings Degradation

The Corrosion and Wear-Corrosion of the Iron-Base Amorphous Coating Prepared by the HVOF Spraying

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