POROUS ALUMINUM BASED ARMORED PROTECTION STRUCTURE WITH THE LOCALIZED HARDENING VOLUME Russian patent published in 2019 - IPC F41H5/04 

FIELD: methods of explosion protection.

SUBSTANCE: invention relates to the field of armored materials for protection against the explosive ordnance damaging factors. Porous aluminum based with the hardening localized volume armored structure consists of porous open-cell aluminum containing 60–70 % of open interconnecting pores with a diameter in the range from 0.14 mm to 0.5 mm, on which surface an aluminum oxide layer is applied by micro-arc oxidation. Volume of pores (1) with the deposited aluminum oxide layer is localized in the armored structure total volume and forms a distinct contour with the pores non-oxidized volume (2). Volume contour of pores (1) with the deposited aluminum oxide layer is determined by any existing in three-dimensional space geometric figure. Localized volume of pores (1) with the deposited aluminum oxide layer can be either larger or smaller than the volume of pores without the deposited aluminum oxide layer. Localized volume of pores (1) with the deposited aluminum oxide layer and the volume of pores (2) without the deposited aluminum oxide layer alternations number within the structure general geometry framework are unlimited.

EFFECT: combination in the porous homogeneous structure by the mechanical properties hardening volume localization, which provide the dispersion effect, and the explosion products shock-wave effect dissipation, damaging elements flow energy dissipation with decrease in the cracking level and the residual energy dissipation without the use of additional supporting structures.

5 cl, 5 dwg