Processes connected with local laser heating of TiB2 armor ceramics

The process of high-temperature heating of TiB2 armor ceramics in air in a continuous and pulsed mode of laser irradiation has been studied by the X-ray diffraction and SEM methods. It has been established that, in the irradiation zone, the temperature increases up to 3000 ?C and over, resulting in...

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Bibliographic Details
Published in:Science of sintering 2019, Vol.51 (2), p.125-134
Main Authors: Vlasova, Marina, Kakazey, Mykola, Aguilar, Pedro, Tapia, Rene, Hernandez, Adalberto, Mel'nikov, Igor, Fironov, Yakov, Uribe, Daniel
Format: Article
Language:English
Subjects:
Ablation
Armor
Ceramics
Decomposition
High temperature
Hot pressing
International conferences
Irradiation
Laser beam heating
Laser induced breakdown
Lasers
local laser heating
Scanning electron microscopy
TiB2 ceramics
Titanium
Titanium diboride
Titanium oxides
X-ray diffraction
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Summary:The process of high-temperature heating of TiB2 armor ceramics in air in a continuous and pulsed mode of laser irradiation has been studied by the X-ray diffraction and SEM methods. It has been established that, in the irradiation zone, the temperature increases up to 3000 ?C and over, resulting in the decomposition of TiB2 and appearance of ablation products, which, in passage of air, oxidize and form dense films (in the pulsed mode) or ?reticulated? films (in the CW mode) consisting of boron and titanium oxides. The mechanism of laser-induced breakdown of TiB2 ceramics is similar to the mechanism of ballistic destruction. nema
ISSN:0350-820X
1820-7413
DOI:10.2298/SOS1902125V