Damageability of the Al 2 O 3  Oxide Coating on the Aluminum Substrate by Pulsed Beam Plasma and Laser Radiation

V. A. Gribkov; A. S. Demin; N. A. Epifanov; E. E. Kazilin; S. V. Latyshev; S. A. Maslyaev; E. V. Morozov; I. P. Sasinovskaya; V. P. Sirotinkin; K. N. Minkov; M. Paduch

doi:10.1134/S2075113319020151

Damageability of the Al₂O₃ Oxide Coating on the Aluminum Substrate by Pulsed Beam Plasma and Laser Radiation

作者: Gribkov V.A.¹, Demin A.S.¹, Epifanov N.A.¹, Kazilin E.E.¹, Latyshev S.V.¹, Maslyaev S.A.¹, Morozov E.V.¹, Sasinovskaya I.P.¹, Sirotinkin V.P.¹, Minkov K.N.¹, Paduch M.²
隶属关系:
1. Baikov Institute of Metallurgy and Material Science
2. Institute of Plasma Physics and Laser Microfusion
期: 卷 10, 编号 2 (2019)
页面: 339-346
栏目: Materials of Power Engineering and Radiation-Resistant Materials
URL: https://journals.rcsi.science/2075-1133/article/view/207858
DOI: https://doi.org/10.1134/S2075113319020151
ID: 207858

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The following investigation of the damageability of the Al₂O₃ oxide ceramic coating on the aluminum substrate under the influence of the concentrated energy fluxes of different nature and pulse duration performed: pulsed laser radiation in the free running mode (at the power density of q = 10⁵–2 × 10⁶ W/cm² and pulse duration of τ_i = 0.7 ms) and modulated Q-switched mode (q = 10⁷–10⁸ W/cm², τ_i = 80 ns), as well as the beam-plasma influence at q = 10⁷–10⁹ W/cm², τ = 50–100 ns. It is shown that, under the influence of laser radiation within the millisecond and nanosecond ranges of the pulse impact on a semitransparent ceramic coating, the partial destruction and peeling of the ceramic layer from the metal substrate is observed. The mechanisms of the observed damageability are determined. The threshold values of the laser radiation flux at which the coating is damaged, caused by peeling, are experimentally estimated. The distribution of the temperature in the surface layer of the samples was calculated by numerical simulation, and it was shown that during laser irradiation the temperature reaches its maximum values at the depth corresponding to the contact area between the coating and substrate. It was established that the impact on the aluminum samples with the ceramic coating from the fast deuterium ion fluxes and high temperature deuterium plasma in the plasma focus device results in melting and partial evaporation of the coating surface layer; but in this case, no cracking or peeling from the aluminum substrate is observed.

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oxide ceramic coating, aluminum substrate, laser radiation, ion and plasma flux

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Damageability of the Al₂O₃ Oxide Coating on the Aluminum Substrate by Pulsed Beam Plasma and Laser Radiation

全文:

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作者简介

V. Gribkov

A. Demin

N. Epifanov

E. Kazilin

S. Latyshev

S. Maslyaev

E. Morozov

I. Sasinovskaya

V. Sirotinkin

K. Minkov

M. Paduch

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Damageability of the Al2O3 Oxide Coating on the Aluminum Substrate by Pulsed Beam Plasma and Laser Radiation

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Damageability of the Al₂O₃ Oxide Coating on the Aluminum Substrate by Pulsed Beam Plasma and Laser Radiation