Air-plasma spraying of cavitation- and hydroabrasive-resistant coatings

Кузьмин, В. С.; Gulyaev, I. P.; Sergachev, D. V.; Vashchenko, Sergey; Palagushkin, Boris; Tokarev, Alexander; Menzilova, Marina

doi:10.1134/s0869864320020109

Cited by 5 publications

(1 citation statement)

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“…The measurements of the velocity of the dispersed phase showed a more than twofold increase in the velocity of the deposited particles compared to the subsonic mode. For both metal and ceramic materials (fraction 20-40 microns), the average particle velocities of more than 700 m/s were obtained at the deposition distance [20], which is not inferior to such well-known and widely used technologies of supersonic gas-thermal deposition as HVOF and HVAF.…”

Section: Supersonic Plasma Torch For Spraying Powder Materialsmentioning

confidence: 83%

The Structure and Characteristics of Wear-Resistant Coatings, Obtained by Supersonic Plasma Spraying

Кузьмин¹,

Gulyaev²,

Sergachev³

et al. 2022

KEM

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The characteristics of coatings designed to protect against cavitation and waterjet wear, obtained by supersonic atmospheric plasma spraying using air as a plasma-forming gas, are studied. The following powder materials were selected for coating: WC/10Co4Cr; Ni-Cr-B-Si-C; Ni-Al; Ni-Ti; bronze. Metallographic studies of the structures of specimens with applied coatings and measurements of their microhardness were carried out. Due to the fact that the tests of materials for hydroabrasive wear are not standardized, studies were carried out on the resistance of coatings to dry abrasive wear according to the ASTM G65-04 standard and to dry reciprocating friction according to the ASTM G133 standard. The conducted studies of the structures of the sprayed coatings suggest that the use of supersonic deposition modes guarantees the production of high-density coatings with a porosity of less than 1 %.

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Section: Supersonic Plasma Torch For Spraying Powder Materialsmentioning

confidence: 83%