Tribocorrosion evaluation of hydrogenated and silicon DLC coatings on carbon steel for use in valves, pistons and pumps in oil and gas industry

Bueno, Alysson Helton Santos; Solís, J.; Zhao, Hongyuan; Wang, Chun; Simões, Thiago A.; Bryant, Michael; Neville, Anne

doi:10.1016/j.wear.2017.09.026

Cited by 36 publications

(17 citation statements)

References 31 publications

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“…For standard engine applications, diamond-like-carbon (DLC) coatings are the material of choice, due to high wear resistance, low friction and a natural inertness that prevents surface corrosion [12][13][14]. Several publications discuss the role of MoDTC in both steel and DLC systems under different testing conditions [6,7,[15][16][17].…”

Section: Introductionmentioning

confidence: 99%

MoDTC Tribochemistry in Steel/Steel and Steel/Diamond-Like-Carbon Systems Lubricated With Model Lubricants and Fully Formulated Engine Oils

Espejo

Thiébaut²,

Jarnias³

et al. 2018

Journal of Tribology

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This work focuses on the tribochemistry of molybdenum dithiocarbamate (MoDTC) oil additive to improve friction behavior of diamond-like-carbon (DLC) coated systems lubricated in boundary regime. Raman microscopy has been used to investigate surface tribolayers formed on coated (hydrogenated a-C:H and non-hydrogenated ta-C) and steel surfaces when lubricated with model lubricants and commercial engine oils. The effect of the additive package and the type of DLC played a crucial role in the development and composition of the tribolayer and the friction performance. The additive package contained in the fully formulated (FF) oils limited the friction reduction capabilities of MoDTC additive for every material pair. Accelerated a-C:H coating wear related to MoDTC tribochemistry was found. For the first time, it has been shown that a distinctive MoS2-containing tribolayer can be formed on the ta-C surface, leading to a coefficient of friction lower than 0.04. The underlying mechanisms of MoDTC/surface interactions and their effect on friction and wear are discussed.

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Section: Introductionmentioning

confidence: 99%

MoDTC Tribochemistry in Steel/Steel and Steel/Diamond-Like-Carbon Systems Lubricated With Model Lubricants and Fully Formulated Engine Oils

Espejo

Thiébaut²,

Jarnias³

et al. 2018

Journal of Tribology

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“…Therefore, DLC films have been demonstrated to work well for a wide variety of applications because of their excellent mechanical and tribological properties . Besides their high hardness, low wear rate, low friction coefficient, bio and hemocompatibility, the superior chemical inertness and high resistivity of DLC films make them promising materials as protective films in corrosive environments . At room temperature, DLC films are chemically inert to practically any solvent and are not attacked by acid, alkalis, or organic solvent …”

Section: Introductionmentioning

confidence: 99%

“…Guan et al investigated the corrosive behaviors of Cr doped DLC (a‐C:Cr) film in variable pH solutions and revealed that doping of Cr could result in good corrosion resistances due to presence of metallic chromium and chromic oxide. Moreover, there are many other studies related to tribocorrosion of various DLC films in various aggressive environments . While these studies have been of great utility, they pay much more attention to the anticorrosion performance of DLC films and the interaction effect between their corrosion and tribological behaviors, thus the dedicated tribological study in corrosive solutions for DLC films is weakened.…”

Section: Introductionmentioning

confidence: 99%

Tribological behaviors of DLC films in sulfuric acid and sodium hydroxide solutions

Ren

et al. 2020

Surface & Interface Analysis

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Tribological behaviors of three typical kinds of diamond-like carbon (DLC) films (a-C, a-C:Cr, and a-C:H) in sulfuric acid and sodium hydroxide solutions were investigated.The a-C film showed the lowest stable coefficients of friction (COF) in both sulfuric acid and sodium hydroxide solutions but the worst wear resistance in sulfuric acid solution. The a-C:H film showed the highest COF in sulfuric acid solution and the best wear resistance in both sulfuric acid and sodium hydroxide solutions. The a-C:Cr film exhibited superior comprehensive tribological performance in sulfuric acid solution, while in sodium hydroxide solution, high COF and very poor wear resistance was observed. What is more, friction and wear mechanism was revealed by investigating the friction-induced material evolutions on the sliding surface. K E Y W O R D S corrosion-wear, corrosive solutions, DLC films, tribological behaviors 1 | INTRODUCTION Diamond-like carbon (DLC) is known to be a metastable form of amorphous carbon containing the tetragonally coordinated sp 3 carbon atoms present in pure diamond as well as the trigonal sp 2 coordination as found in graphite. 1-3 Therefore, DLC films have been demonstrated to work well for a wide variety of applications because of their excellent mechanical and tribological properties. 4-10 Besides their high hardness, low wear rate, low friction coefficient, bio and hemocompatibility, the superior chemical inertness and high resistivity of DLC films make them promising materials as protective films in corrosive environments. 11-16 At room temperature, DLC films are chemically inert to practically any solvent and are not attacked by acid, alkalis, or organic solvent. 13 With these interesting properties, DLC films are promising candidates for tribocorrosion applications where superior tribological performance and corrosion resistance are simultaneously required.The sp 2 regions in amorphous networks of DLC films are found to control the electronic properties such as band gap, while the sp 3 regions are found to control mechanical properties such as rigidity, hardness, fracture toughness, and tribological properties such as wear, friction, and corrosion resistance. 1,2 Thus, it is the sp 3 /sp 2 ratio of DLC films that mainly regulate their comprehensive performance including the mechanical and tribological properties as well

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“…There were three different hip joints coated DLC reported in Ref. [4,9]: DLC-coated femoral heads against Polyethylene implanted cups (DLC-P) [6][7][8][9], DLC-coated femoral heads against metal cups (DLC-M) [5,[10][11] and DLC-coated femoral heads against metal DLC-coated cups (DLC-DLC). Actually, the material of femoral head was metal or ceramic [7].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Bias on Properties of DLC Coatings for Artificial Joints

et al. 2020

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Tribocorrosion evaluation of hydrogenated and silicon DLC coatings on carbon steel for use in valves, pistons and pumps in oil and gas industry

Abstract: evaluation of hydrogenated and silicon DLC coatings on carbon steel for use in valves, pistons and pumps in oil and gas industry, Wear,

Cited by 36 publications

References 31 publications

MoDTC Tribochemistry in Steel/Steel and Steel/Diamond-Like-Carbon Systems Lubricated With Model Lubricants and Fully Formulated Engine Oils

MoDTC Tribochemistry in Steel/Steel and Steel/Diamond-Like-Carbon Systems Lubricated With Model Lubricants and Fully Formulated Engine Oils

Tribological behaviors of DLC films in sulfuric acid and sodium hydroxide solutions

The Effect of Bias on Properties of DLC Coatings for Artificial Joints

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