Anti-corrosion Lubricant Solutions for Automotive Applications

Lubricating oil composition for electric vehicle transmissions that balances wear protection with good copper corrosion resistance, sufficient volume resistivity, and good hot surface deposit control. The composition contains a sulfur-based additive with a thiadiazole and a sulfurized polyolefin, along with phosphorus-containing anti-wear additives. The sulfur-based additive provides wear protection and helps prevent corrosion. The phosphorus additives provide wear protection without contributing to corrosion. The oil also has specific viscosity and volume resistivity ranges.

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Low-ash lubricating oil compositions with improved corrosion and emulsion stability, comprising a base oil with a total calculated sulfated ash of 0.5 wt% or less, and an acyclic corrosion inhibitor with a C6 or greater hydrocarbyl chain, substantially free of imine, imide, amidine structural units or hydroxy derivatives thereof. The lubricating oil composition exhibits a stable emulsion at 0°C and/or 25°C and no steel corrosion in humidity corrosion testing.

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Lubricating composition for electric vehicle drivelines, comprising a lubricating oil, a dispersant, corrosion inhibitor, phosphorus antiwear agent, antioxidant, and a sulfur-free detergent, specifically designed for compatibility with both electric motor components and traditional combustion engine gear reduction units.

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Corrosion inhibitors are a vital component in the prevention of metal degradation, which is a significant issue affecting various industries worldwide. This chapter provides a comprehensive overview of the role of corrosion inhibitors in mitigating corrosion-related problems. The classification, mechanism of action, and applications of corrosion inhibitors, highlighting their effectiveness in different environments and industries have been reviewed. The chapter also explores recent advancements in the development of green corrosion inhibitors as sustainable and eco-friendly corrosion inhibitors, as well as future directions for research in this field. The review aims to provide a valuable resource for researchers, engineers, and industries seeking to understand and combat corrosion-related issues.

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Lubricating oil composition for internal combustion engines with improved fuel efficiency, comprising a lubricating base oil, magnesium salicylate, calcium salicylate, and a molybdenum-based friction modifier, optionally including anti-wear agents, antioxidants, and dispersants.

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This book chapter offers a comprehensive overview of anticorrosive coatings, focusing on various types, their protective mechanisms, and their applications in corrosion protection. For centuries, corrosion of engineering metals and alloys has been an extensive and expensive problem, affecting several industries, such as infrastructure, transportation, and manufacturing. Anticorrosive coatings play a vital role in mitigating corrosion damage by providing a protective barrier between the metal substrate and the corrosive environment. The chapter begins with the introduction of significant corrosion variants and their characteristics, with the importance of anticorrosion coatings. Further delves into an in-depth exploration of different types of anticorrosive coatings based on functionality and compositions with detailed studies on barrier, inhibitive, sacrificial, hybrid, and functional coatings. Each coating type is discussed in terms of its composition, corrosion protection mechanisms, and applications. The chapter highlights the advancement in anticorrosive coatings, such as self-he... Read More

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In recent years, with the development of productivity, the update and iteration of anti-corrosion technology is also advancing rapidly. The innovations of anti-corrosion materials, anti-corrosion technologies, and anti-corrosion mechanisms are emerging in an endless stream. They use different ways to make anti-corrosion stronger, more convenient, and more environmentally friendly. This review summarizes the new discoveries in the field of anti-corrosion in recent years according to different characteristics. These include traditional coatings and corrosion inhibitors that apply new materials; adding nanofillers to the gaps in the coating to prepare new multifunctional coatings; obtaining super-hydrophobic surfaces after special treatment of the coating surface; and discovering the corrosion inhibition effect of bacterial biofilms, and even anti-corrosion coatings suitable for UV preparation. In addition to introducing and analyzing their anti-corrosion methods, the characteristics and application fields of various methods are briefly evaluated. Finally, based on the current developme... Read More

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A lubricating oil composition for internal combustion engines that combines multiple molybdenum-based friction modifiers to achieve improved friction reduction while maintaining high-temperature detergency, oxidation stability, and copper corrosion resistance. The composition includes a base oil, a specific combination of molybdenum-based friction modifiers, a metal-based detergent, and an ash-free dispersant, with a carefully controlled acid value and sulfur-to-nitrogen ratio.

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Solid lubricants are those materials that are used to lubricate mainly in dry circumstances. Its main role is similar to that of oils and greases, which is used to create a continuous and adherent lubricant film on the tribological pair surfaces for minimising friction and wear [1]. These coatings are typically employed in situations where liquid lubricants cannot be used or do not offer expected lubrication, such as in high or cryogenic temperatures, high vacuum, ultrahigh-radiation, reactive environments and in extreme contact pressure conditions [2]. Different types of solid lubricants, including graphite, have been extensively used since the middle of the 20th century [3]. From 1950 onwards, development in aeronautics industries emphasised the research and development of advanced solid lubricants. They can be classed based on their crystalline structure, features, properties, or functions, among other things. Different types of solid lubricant coating are shown in Fig. 1 [1].

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A lubricating oil composition for internal combustion engines that achieves both low viscosity and excellent lubricity. The composition comprises a base oil, an organic molybdenum compound, and a calcium-based detergent, with a specific molybdenum-to-soap group ratio. The composition exhibits improved oil film-forming ability, reduced frictional wear, and enhanced fuel efficiency, making it suitable for use in low-viscosity engine oils.

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Lubricant compositions for marine engines, particularly two-stroke engines, that prevent corrosion and tribocorrosion of metal parts. The compositions contain an alcohol ethoxylated phosphate ester compound that provides corrosion protection without increasing the base number (BN) of the lubricant. The compound is applied directly to the engine's metal parts, such as cylinder walls, to prevent corrosion and tribocorrosion. The lubricant compositions also include conventional additives like dispersants, detergents, and anti-wear agents.

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In daily life, corrosion is an inevitable problem. Metal corrosion control is crucial for technical, financial, health, and environmental reasons. One of the finest methods for preventing corrosion in metals and metal alloys involves the application of inhibitors. Toxicity of the environment caused by synthetic inhibitors has increased the use of green corrosion inhibitors which are biodegradable, are nontoxic, and do not include heavy metals. In addition, these are affordable, easily accessible, and renewable. The majority of the natural products have the required components for their use as a good source of green corrosion inhibitors. These components help with the adsorption of these substances on metals or alloys to produce a coating that protects the surface and prevents corrosion. The numerous forms of green corrosion inhibitors are briefly covered in this chapter, with a focus on the discussion of the various characteristics of the green corrosion inhibitors documented in the literature.

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Petroleum crude oil is depleting very fast throughout the world. Researchers are focusing on alternative sources that can reduce our dependence on petroleum feedstock. Naturally occurring vegetable oils and natural fats have long been and continue to be the most alternative renewable feedstock for industrial applications such as foods, fuels, corrosion inhibitors and lubricants. Natural extracts of vegetable seeds are an incredibly important feedstock for the industry since they are renewable, sustainable, non-toxic, non-polluting, and cost effective in comparison to synthetic feedstock. Eco-friendly vegetable oils, particularly plant oils, have excellent anticorrosion, lubrication, and viscosity indices due to their inherent affinity for metal surfaces, making them suitable as corrosion inhibitors and lubricants. Corrosion has both economic and social consequences, affecting the safety and health of people who work in industries or live in communities. As an outcome, researchers are exploring and implementing naturally occurring and eco-friendly corrosion inhibitors. In view of the ... Read More

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Lubricant compositions for reducing corrosion in polymerization processes using bronze compressor packing. The lubricant contains an oil and the corrosion inhibitor diethylenetriamine pentaacetic acid (DTPA). Exposing metal components like bronze packing rings in compressors to this lubricant solution with acrylic acid during polymerization reduces corrosion compared to just using the oil. The DTPA inhibits metal corrosion in the harsh polymerization environment.

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In this paper, the issues of increasing the durability of units and parts of the car body with polymer anti-corrosion materials are studied. The object of the research is polymer anti-corrosion coatings. Automotive vehicles are constantly exposed to corrosion processes, and the durability of metal parts depends on the intensity of corrosion. The loss of metals from corrosion is 8-10% of the initial metal mass. In total, losses from corrosion account for 4-6% of national income in many countries. This indicates the need for research and the importance of scientific and technical work in this area. This can be achieved by developing a technology for producing anticorrosive compounds and applying them as protective coatings. In laboratory conditions, based on local raw materials, we have synthesized an anticorrosive coating - epoxy polyurethane with an additive. The main indicators of the synthesized anti-corrosion coating were determined under the standards. Anti-corrosion protection was determined by the method of weight loss of metal plates in various aggressive environments, impact ... Read More

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Corrosion has long been an enduring obstacle for researchers. It is a challenge to make progress in corrosion protection technology and understanding corrosion mechanisms for quite some time. In recent years, the slippery surface has been applied for anti-corrosion. This novel surface gives new expectation to corrosion protection technicians. Even though some researchers have constructed lots of slippery surfaces for anti-corrosion, the robustness should be improved and the intrinsic anti-corrosion mechanism also needs to be clarified. Therefore, we fabricated a solid slippery surface (SSS) via electrodeposition combined with hydrothermal method followed by solid lubricant infused into a micro-nano "metasequoia" structure. The anti-abrasion performance was enhanced due to the special structure as well as the solid lubricant. Besides, the SSS showed thermal assisted self-healing property even after experienced abrasion. The corrosion resistance was evaluated by electrochemical experimental with the potentiodynamic polarization curve and alternating-current impedance technique. The Eco... Read More

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Corrosion is a phenomenon that strongly affects many industries. Everything related to metallurgy, shipbuilding, or the oil industry is negatively affected by corrosion processes. This is a big problem, because the number of industrial accidents due to corrosion reaches more than 75%. Therefore, in this work, the effectiveness of inhibition of corrosion processes in mineralized water-oil environments was investigated in detail. The main goal of the article is to study the regularity of corrosion processes in water-oil media of different composition and at different temperature regimes for effective selection of the inhibition mechanism and type of corrosion inhibitor.
 An effective method of reducing the impact of corrosion processes today is the use of inhibitors. This is expedient not only from the point of view of the effectiveness of the action, but also from the point of view of economic expediency. Inhibitors are added to corrosive environments in order to stop or reduce corrosion processes. They can be used as protective barriers that form a protective layer, and as absor... Read More

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The paper contains an overview of Rosoil rust-preventive, protective and operating lubricants for metallurgy, mechanical engineering and other industries, including for military-industrial enterprises, as well as for the needs of the Ministry of Defense of the Russian Federation and the population. The main physicochemical and operational characteristics of rust-preventive, protective and operating lubricants are given such as rust-preventive greases for corrosion protection of ferrous and non-ferrous metal products during storage and transportation; protective grease lubricants for anticorrosive and mechanical processing of metals; protective antifriction greases for lubrication when manufacturing and operationing steel ropes made of uncoated wire and galvanized wire; universal lubricants for multi-purpose applications; corrosion-preventing oil for protection of military equipment; gun oils for cleaning, lubrication and corrosion protection of artillery and small arms during storage and operation; corrosion inhibitors to improve the protective properties of lubricating oils for vari... Read More

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Dispersants for lubricants that improve soot performance in engines, comprising compounds derived from substituted succinic anhydrides and diamines. The dispersants are formed through a reaction between the anhydride and diamine, and can be combined with other additives to create lubricants that effectively manage soot deposits.

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Corrosion is the process through which a metal deteriorates as a result of chemical reactions with its surroundings. Corrosion inhibitors are a highly efficient method of preventing corrosion on metal surfaces. New studies are focusing on how to make coatings more effective toward corrosion. One cutting-edge method involves chemically bonding the surfaces of modified fillers in order to increase the better dispersion of coating used and the surface of the material on which coating is applied. In this regard, the surfaces of the filler are activated and modified by grafting a variety of functional groups in order to make them active. Surfaces with coating material matrices that include modified compounds as fillers improved their adherence to metal and increased the various properties like thermal, anticorrosion, etc. of the various coating materials, which used to shield metals from corrosive environments. This was accomplished by improving the adhesion of the modified compounds to the metallic surfaces. Therefore, in this article anti-corrosion coatings are first described in detail... Read More

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