Nanoparticle dispersion-strengthened coatings and electrode materials for electrospark deposition

Левашов, Е. А.; Vakaev, P.V.; Zamulaeva, E. I.; Kudryashov, A. E.; Pogozhev, Yu. S.; Shtansky, Dmitry V.; Voevodin, Andrey A.; Sanz, Alejandro

doi:10.1016/j.tsf.2006.07.140

Cited by 26 publications

(20 citation statements)

References 9 publications

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“…It is known [6][7][8][9][15][16][17][18][19][20][21][22][23][24][25] that the increase in energy leads to an increase in the thickness, hardness and amount of wear-resistant phases in the coatings, which creates prerequisites for increased wear resistance of the coated surfaces. At the same time, however, the roughness and unevenness of the coatings increases.…”

Section: J)mentioning

confidence: 99%

“…1. Use of low-energy pulses (E <0.05J), which will form coatings with lower roughness parameters, but also with lower thickness and not reaching the optimal possible wear resistance [8,[15][16][17][18][19][20][21]25];…”

Section: J)mentioning

confidence: 99%

“…The ESD surface layer changes the friction conditions in two main directions: a change of surface composition, the structure, and the surface microgeometry change. It is known that most often after ESD the roughness of the coatings is higher than that of the base and the relatively high roughness of ESD coatings adversely affects the wear resistance of coated products [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

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Surface Topography and Roughness Parameters of Electrospark Coatings on Titanium and Nickel Alloys

Kostadinov¹,

Danailov²,

Dimitrova³

et al. 2021

Applied Engineering Letters

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This paper examines the topography and roughness of coatings of hard alloyed materials deposited by electrospark deposition (ESD) on titanium and nickel alloys with different initial roughness. The influence of the electrode materials and the energy parameters of the ESD process on the roughness parameters Ra, Rt, Rq, Rz, Rmax, on the depth of waviness Wt, the asymmetry Rsk, the excess Rku, on the depth of core roughness Rk and the depth of the reduced picks roughness Rpk was established. The conditions for ESD are indicated, under which the traces of the previous treatment are erased and the characteristics of the initial substrate surface are improved. The numerical values of the roughness parameters for electrospark coatings from five types of hard alloys and one type of TiB2 based electrode with nanosized additives have been established.

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Section: J)mentioning

confidence: 99%

Section: J)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Surface Topography and Roughness Parameters of Electrospark Coatings on Titanium and Nickel Alloys

Kostadinov¹,

Danailov²,

Dimitrova³

et al. 2021

Applied Engineering Letters

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“…Для расчета критерия Палатника было прове-дено измерение плотности, теплоемкости и теп-лопроводности материалов анодов. Полученные значения, а также данные справочников [33] нению со спеченным электродом по причине бо-лее высокой эрозионной стойкости тугоплавких соединений [22], что находится в согласии с про-веденной выше оценкой критерия Палатника.…”

Section: исследование эрозионной способности электродных материалов иunclassified

Peculiarities of formation of sintered electrodes of the Ti–Ti3P–CaO composition and their application in technology of pulsed electric-discharge machining of titanium

Логинов¹,

Левашов²,

Потанин³

et al. 2015

Izv. VUZ. Poroshk. Met.

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Исследовано влияние механической обработки на структуру и фазовый состав порошковых смесей Ti-10%Ca 3 (PO 4 ) 2 . По тех-нологии прессования и вакуумного спекания получены керамические электродные материалы Ti-Ti 3 P-CaO с высокой одно-родностью компонентов и остаточной пористостью 5-7 %. Изучена эрозионная способность спеченного металлокерами-ческого электрода Ti-Ti 3 P-CaO при импульсной электроискровой обработке титановых подложек и проведено сравнение с электродами TiC 0,5 -Ti 3 PO x -CaO, изготовленными методом самораспространяющегося высокотемпературного синтеза. По-крытия, полученные при использовании электродов Ti-Ti 3 P-CaO и TiC 0,5 -Ti 3 PO x -CaO, характеризовались высокой сплошнос-тью, толщиной до 20 мкм, микротвердостью до 3,6 ГПа, шероховатостью 3,3-4,6 мкм, наличием и равномерным распределе-нием биоактивных элементов кальция и фосфора. 2015. No. 4. С. 45-58. DOI: dx.doi.org/10.17073/1997-308X-2015 Peculiarities of formation of sintered electrodes of the Ti-Ti 3 P-CaO composition and their application in technology of pulsed electric-discharge machining of titaniumThe influence of mechanical treatment on the structure and phase composition of Ti-10%Ca 3 (PO 4 ) 2 powder mixtures is investigated. The Ti-Ti 3 P-CaO ceramic electrode materials with a high uniformity of components and residual porosity of 5-7% are fabricated according to the pressing and vacuum sintering technology. The erosion ability of the Ti-Ti 3 P-CaO metal-ceramic electrode under the pulsed electric-discharge machining of titanium substrates is investigated and compared with the TiC 0,5 -Ti 3 PO x -CaO electrodes fabricated by self-propagating high-temperature synthesis. Coatings fabricated when using Ti-Ti 3 P-CaO and TiC 0,5 -Ti 3 PO x -CaO electrodes are characterized by high continuity, thickness up to 20 μm, microhardness up to 3,6 GPa, roughness to 3,3-4,6 μm, and the presence and uniform distribution of calcium and phosphorus bioactive elements.Keywords: pulsed electric-discharge machining, planetary ball mill, sintering, bioactive coating, ceramics.

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“…Levashov et al [11] analyzed the positive effects (increased wear and heat resistance, diminished friction coefficient, and a higher rate of hardness) generated by the use of certain nanosized powder additives on the microstructure and properties of electrospark deposition.…”

Section: Introductionmentioning

confidence: 99%

Electrospark Deposition by Using Powder Materials

Topală

Slatineanu

Dodun

et al. 2010

Materials and Manufacturing Processes

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Electrical discharges can be used to improve the operational properties of the surface layer of parts by using the phenomena of tempering, alloying, and deposition. Various techniques of alloying or deposition have been studied so far and sometimes even applied in the industry. The systemic approach of the deposition process shows which input and output factors can be taken into consideration. This article presents the experimental results obtained by using the deposition process based on the introduction of additional material such as powders put directly in the plasma channel corresponding to the electrical discharge. The established empirical mathematical models emphasize the influence exerted by the work gap value between the electrode and the workpiece, the powder flow, the delivered energy, and the specific energy on the quantity of added material.

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Nanoparticle dispersion-strengthened coatings and electrode materials for electrospark deposition

Cited by 26 publications

References 9 publications

Surface Topography and Roughness Parameters of Electrospark Coatings on Titanium and Nickel Alloys

Surface Topography and Roughness Parameters of Electrospark Coatings on Titanium and Nickel Alloys

Peculiarities of formation of sintered electrodes of the Ti–Ti3P–CaO composition and their application in technology of pulsed electric-discharge machining of titanium

Electrospark Deposition by Using Powder Materials

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