Photoluminescent Coatings on Zinc Alloy Prepared by Plasma Electrolytic Oxidation in Aluminate Electrolyte

Maltanava, Hanna; Stojadinović, Stevan; Vasilić, Rastko; Карпушенков, С. А.; Belko, N. V.; Самцов, М. П.; Poznyak, S.K.

doi:10.3390/coatings13050848

Cited by 2 publications

(1 citation statement)

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“…An alternative method of modifying metal and alloy surfaces to increase a variety of performance indicators is plasma electrolytic treatment [4][5][6][7]. There are a variety of processes aimed at obtaining ceramic-like coatings by plasma electrolytic oxidation [8][9][10][11][12][13][14] and surface polishing or removal of the surface layer by plasma electrolytic polishing (PEP) [15][16][17][18][19][20][21][22]. The most diverse is the surface modification through plasma electrolytic diffusion saturation: nitriding (PEN), boriding (PEB), and nitrocarburizing (PENC) [23,24], which have found a wide application for the processing of steel products.…”

Section: Introductionmentioning

confidence: 99%

Possibilities of Duplex Plasma Electrolytic Treatment for Increasing the Hardness and Wear Resistance of a Commercially Pure Titanium Surface

et al. 2023

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The technology for duplex treatment of a commercially pure titanium surface is expected to increase hardness and wear resistance. This technology consists of sequential nitrocarburizing and polishing of the product in plasma electrolysis. The mechanism of duplex processing is revealed; it consists of strengthening the surface layers under diffusion saturation and controlled formation of the surface relief. The possibility of controlling the characteristics of the modified surface by combining various plasma technologies is shown. The morphological features of the surface and the surface layer after treatment were studied. The microhardness of the modified layer and the tribological properties of the surface were measured. It has been established that the samples with the highest surface layer hardness and a small thickness of the oxide layer on the surface have the highest wear resistance. After nitrocarburizing at 750 °C for 5 min, wear resistance increases by 4.3 times compared to pure material. If subsequent polishing is carried out at a voltage of 275–300 V for 3–5 min in chloride and fluoride electrolytes and 5–10 min in a sulfate electrolyte, then wear resistance can be further increased. This is achieved by removing the porous outer oxide layer.

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Section: Introductionmentioning

confidence: 99%

Possibilities of Duplex Plasma Electrolytic Treatment for Increasing the Hardness and Wear Resistance of a Commercially Pure Titanium Surface

et al. 2023

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Possibilities of Duplex Plasma Electrolytic Treatment for In-Creasing the Hardness and Wear Resistance of the CP-Ti Surface

Кусманов¹,

Mukhacheva²,

Tambovskiy³

et al. 2023

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The possibility of increasing wear resistance of the CP-Ti surface using a duplex surface treat-ment combining plasma electrolytic nitrocarburizing in a solution of ammonia, acetone and ammonium chloride and subsequent plasma electrolytic polishing is shown. Morphology and surface roughness, structure and microhardness of the modified layer were studied. The correla-tion of weight wear with hardness of diffusion layer at a low processing temperature and thick-ness of oxide layer is established – the largest decrease in weight wear occurs after nitrocarbu-rizing at 750 °C for 5 min (by 4.3 times). The possibility of an additional increase in wear re-sistance by subsequent polishing of the nitrocarburized CP-Ti surface at a voltage of 275–300 V for 3–5 min in chloride and fluoride electrolytes and 5–10 min in a sulfate electrolyte was re-vealed. Under these conditions, the hardened layer is preserved when the porous outer oxide layer is removed. According to the microtopology of the friction tracks, the wear mechanism is estimated as fatigue in dry friction and plastic contact.

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Photoluminescent Coatings on Zinc Alloy Prepared by Plasma Electrolytic Oxidation in Aluminate Electrolyte

Cited by 2 publications

References 66 publications

Possibilities of Duplex Plasma Electrolytic Treatment for Increasing the Hardness and Wear Resistance of a Commercially Pure Titanium Surface

Possibilities of Duplex Plasma Electrolytic Treatment for Increasing the Hardness and Wear Resistance of a Commercially Pure Titanium Surface

Possibilities of Duplex Plasma Electrolytic Treatment for In-Creasing the Hardness and Wear Resistance of the CP-Ti Surface

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