Investigation of the Structural, Mechanical and Tribological Properties of Plasma Electrolytic Hardened Chromium-Nickel Steel

Rakhadilov, Bauyrzhan; Seitkhanova, Ainur; Satbayeva, Zarina; Yerbolatova, Gulnara; Icheva, Yulianna; Sagdoldina, Zhuldyz

doi:10.3390/lubricants9110108

Cited by 5 publications

(2 citation statements)

References 8 publications

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“…Improved material properties extend the service life of specific units and, consequently, the whole machine, reducing the need for new parts, repairs, and thus unnecessary energy consumption. Methods to improve machine parts and assemblies have varied from different heat treatments [1][2][3][4] to applying coatings with different complicities [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Tribological and Mechanical Properties of the Nanostructured Superlattice Coatings with Respect to Surface Texture

et al. 2022

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Ceramic Nanostructured Superlattice Coatings (NSC) have broad applicability to improve the parts’ and assemblies’ tribological and mechanical properties for the needs of the automotive and aerospace industries. Improving the material properties using nanocoatings for such a widely used material as, for example, bearing steel 100Cr6 makes it possible to improve the service life of machine parts. In this paper, the correlation dependence between tribological and mechanical properties of the NSC and its surface texture are considered to determine how much surface texture will affect the tribological performance of the coated workpieces, as well as the measuring and evaluation procedure of the nanocoatings, are presented. Three different NSC described by a general empirical formula {TiMe1Me2-CN/TiAlSi-N}n and based on the modified carbonitride/nitride non-stoichiometric chemical composition were created, and their tribological and mechanical properties measured and analyzed in the context with surface texture. NSC deposited by the advanced PVD (Physical vapor deposition) technique demonstrated significantly higher wear resistance (up to 28 times), reasonably lower friction coefficient (CoF) (up to 4 times), and significantly higher hardness of the coated workpieces (up to 7 times) versus substrate material. A strong correlation between the steady-state dry sliding friction, CoF, and the amplitude and functional surface texture parameters of tribo-track were observed. The first results of the initiated research regarding the correlation analysis of the tribological and mechanical properties, on the one hand, and surface texture, on the other hand, of the NSC are reported here.

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Section: Introductionmentioning

confidence: 99%

Tribological and Mechanical Properties of the Nanostructured Superlattice Coatings with Respect to Surface Texture

et al. 2022

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“…The plasma layer is formed from the electrolyte material in the gap between the liquid electrode and the conductive surface of the workpiece. Electrolytic plasma hardening is a complex process that combines physical metallurgy and electrochemical processes, such as sample heating in the cathode mode, where phase transformations and deformation occur simultaneously [13,14].…”

Section: Introductionmentioning

confidence: 99%

Investigation of Changes in the Structural-Phase State and the Efficiency of Hardening of 30CrMnSiA Steel by the Method of Electrolytic Plasma Thermocyclic Surface Treatment

et al. 2022

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Electrolytic plasma thermocyclic surface hardening is an attractive solution for both chemical and heat treatment used to improve the properties of the steel surface by structural and phase transformation. Structural and phase transformations occurring during the process of electrolytic plasma thermocyclic hardening are performed repeatedly at varying heating–cooling temperatures, which radically improve the quality of the part and give them properties unattainable by means of one-time processing. The impact of electrolytic plasma thermocyclic hardening modes on the structure and mechanical and tribological properties of 30CrMnSiA steel is investigated. The structural and phase components were examined using optical and scanning electron microscopy, as well as X-ray phase analysis. It is established that the structure of the cross-section is characterized by the following zonality: zone 1—a near-surface hardened zone, which is composed of hardened martensite; zone 2—thermal influence; and zone 3—a matrix consisting of pearlite and ferrite. The microhardness and wear resistance of the hardened surface were evaluated by nanoindentation and “ball on disk” methods, respectively. Nanoindentation analysis demonstrated that the indentation hardening process provides a maximum increase in hardness by three times and an increase in stiffness with a decrease in the elastic modulus by 38% compared to the original steel. The results of tribological studies show that electrolytic plasma thermocyclic hardening increases the resistance of steel to friction by increasing the surface hardness and reduces the area of actual contact during friction. It is established that the microhardness of the cross-section decreases proportionally from the surface to the depth of the layer, which is associated with a decrease in the volume content of martensite.

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Evaluation of adhesion strength and tribological characteristics of Ni-Co-BN nano-coating developed by magnetron sputtering

Wani‫

Ahmad

2023

Preprint

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Nickel-Cobalt-Boron Nitride (Ni-Co-BN) coatings were deposited on aluminium silicon substrate (Al-Si) substrate (Al-Si) using magnetron sputtering system. The composition and characteristics of the nano-coating were analysed using X-Ray diffraction (XRD), field emission scanning electron microscopy (FESEM), and energy dispersive spectroscopy (EDS). Nano scratch tests with ramp loading of 5000 µN have been conducted at three regions to understand the coating behavior. The coating adheres well to the substrate up to the load of 4499 µN. However, at a load of 4500 µN, the peeling of coating occurred. Nano wear tests were performed at a load of 100 µN by varying the number of cycles of 2, 4, 6, and 8 possessing a tip velocity of 40 µm/sec to determine material loss and material loss resistance. It was observed that wear rates go down as we increase the wear cycles and sliding distance. The low values of friction coefficient during wear tests indicate that the coating has excellent lubricating properties and suggests its suitability for Internal combustion engine applications.

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Investigation of the Structural, Mechanical and Tribological Properties of Plasma Electrolytic Hardened Chromium-Nickel Steel

Cited by 5 publications

References 8 publications

Tribological and Mechanical Properties of the Nanostructured Superlattice Coatings with Respect to Surface Texture

Tribological and Mechanical Properties of the Nanostructured Superlattice Coatings with Respect to Surface Texture

Investigation of Changes in the Structural-Phase State and the Efficiency of Hardening of 30CrMnSiA Steel by the Method of Electrolytic Plasma Thermocyclic Surface Treatment

Evaluation of adhesion strength and tribological characteristics of Ni-Co-BN nano-coating developed by magnetron sputtering

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