On Application of Carbon-Containing Electrode Materials in Technology of Electrospark Alloying: Part 1. Peculiarities of Coating Formation Using Electrospark Treatment of Titanium Alloy OT4-1

Kudryashov, A. E.; Eremeeva, Zh. V.; Левашов, Е. А.; Lopatin, V. Yu.; Sevost’yanova, A. V.; Zamulaeva, E. I.

doi:10.3103/s1068375518050083

Cited by 10 publications

(18 citation statements)

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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%

“…Up to certain limits, which are different for different specific cases, this increase is compensated by the high microhardness, the higher content of wear-resistant phases, the greater thickness and the fine-grained structure of the coatings [8,15,[17][18][19]21,25]. After these limits, the higher roughness begins to adversely affect the layered surfaces' tribological properties and reduce the lamination effect.…”

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%

“…2. Using a higher pulse energy and applying an additional -upper (last layer) with low pulse energy, or with graphite electrodes [8,15,17,19,[21][22][23][24]. However, this step can only reduce roughness to a certain extent, which in some cases with high surface quality requirements may be insufficient.…”

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%

See 4 more Smart Citations

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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