METHOD OF PRODUCTION OF BERYLLIUM FOIL Russian patent published in 2003 - IPC

FIELD: manufacture of self-carrying thin films; manufacture of beryllium foil used for windows in recording low-energy radiation; applied physics, metalworking and other industries. SUBSTANCE: proposed method includes application of precoat on prepared surface of substrate to exclude diffusion of material of foil into substrate followed by settling of layers of foil material and separation of foil from substrate, after which aluminum is implanted through contact of foil with aluminum oxide- based material and is subjected to heat treatment at temperature of 900 to 1050 C at total partial pressure of active gases lesser than 1•10^-3 Pa. Proposed method reduces brittleness of foil at retained transparence of windows at recording low-energy ionizing radiation. EFFECT: enhanced efficiency and reliability.