Thermophysical properties of refractory W-50.4%Re and Mo-39.5%Re thin alloy layers deposited on silicon and silica substrates

Trefon-Radziejewska, Dominika; Juszczyk, Justyna; Fleming, Austin; Podwórny, Jacek; Chirtoc, M.; Horny, Nicolas; Wrona, Adriana; Lis, Marcin; Mazur, М.; Wojcieszak, Damian; Kaczmarek, Danuta; Bodzenta, Jerzy

doi:10.1016/j.ijrmhm.2019.105147

Cited by 6 publications

(1 citation statement)

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“…These properties makes rhenium an attractive candidate for numerous applications, especially in high-temperature structural and energy systems applications. Currently, additions of rhenium are commonly used in Ni-or Co-based superalloys for the purpose of improving the creep strength [1], reinforced composite [2] or manufacturing of coatings [3,4]. On the other hand, plasma spraying process is able to produce coatings with any chemical composition that are necessary for different industrial applications, spray on complex shapes as well as on elements with small thickness.…”

Section: Introductionmentioning

confidence: 99%

Laser remelting of Ni-Cr-Re plasma spraying coating

Węglowski

Dworak

Dymek

et al. 2020

METAL 2020 Conference Proeedings

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The plasma spray technology allows spraying a wide variety of materials. Atmospheric plasma spraying (APS) consists in injecting a powder feedstock material in a plasma jet to melt and accelerate the injected particles and spray them onto a substrate. The coating growth is thus realized by the impingement and spreading of sprayed particles. This mechanism of coating formation induces the presence of pores and micro-cracks. In order to eliminate those drawbacks, laser remleting may be used to improve the properties and performances of plasma sprayed coatings. In the present paper, the Ni20%C + 20%Re coating fabricated by plasma spraying on stainless steel substrate were remelted by CO2 laser, and the effect of laser remelting on microstructure and hardness of plasma sprayed Ni20%Cr + 20%Re coating were studied. The microstructure of plasma sprayed and laser remelted coatings were analyzed using scanning election microscopy (SEM) and energy disperse spectroscopy (EDS). The micro-hardness of coating was measured using micro-hardness tester. The results show that the laser remelted coating becomes much denser moreover, the chemical composition of the coatings becomes homogeneous

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Section: Introductionmentioning

confidence: 99%