METHOD FOR PRODUCING THE SENSING ELEMENT OF AN ULTRA-VIOLET INDICATOR
The invention relates to the production of photosensitive materials and can be used for photobiology, medicine, instrument engineering and for thermal and fire protection. Ultra-violet indicators (UV-light) used for various fields must efficiently operate in various wavelength regions of UV-light. T...
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| creator | TITOV, ANATOLY IVANOVICH KURILOV, ALEXANDR NIKOLAEVICH DEMIN, ANDREI VASILIEVICH MOROZOV, MIKHAIL MIKHAILOVICH KRIVOSHEI, JURY VIKTOROVICH |
| description | The invention relates to the production of photosensitive materials and can be used for photobiology, medicine, instrument engineering and for thermal and fire protection. Ultra-violet indicators (UV-light) used for various fields must efficiently operate in various wavelength regions of UV-light. The inventive method for producing a sensing element of an ultra-violet indicator consists in growing an alkaline-halide monocrystal of the potassium group from a melt, carrying out the main annealing of said monocrystal at a temperature ranging from 500 DEG C to 580 DEG C during 4-6 hours in sodium vapours, subsequent cooling the monocrystal at a cooling rate which is equal to or less than 1 degree/min. and additionally annealing it at a temperature ranging from 500 DEG C to 540 DEG C for 90 min. in air, prior to the main annealing said monocrystal being annealed at a temperature ranging from 550 to 650 DEG C during 1.5-2 hours in air. Said method makes it possible to produce a reusable sensing element which is quickly and uniformly colourable when exposed to UV-light and to reduce the time of loss of colour of said sensing element. |
| format | Patent |
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Ultra-violet indicators (UV-light) used for various fields must efficiently operate in various wavelength regions of UV-light. The inventive method for producing a sensing element of an ultra-violet indicator consists in growing an alkaline-halide monocrystal of the potassium group from a melt, carrying out the main annealing of said monocrystal at a temperature ranging from 500 DEG C to 580 DEG C during 4-6 hours in sodium vapours, subsequent cooling the monocrystal at a cooling rate which is equal to or less than 1 degree/min. and additionally annealing it at a temperature ranging from 500 DEG C to 540 DEG C for 90 min. in air, prior to the main annealing said monocrystal being annealed at a temperature ranging from 550 to 650 DEG C during 1.5-2 hours in air. Said method makes it possible to produce a reusable sensing element which is quickly and uniformly colourable when exposed to UV-light and to reduce the time of loss of colour of said sensing element.</abstract><edition>7</edition><oa>free_for_read</oa></addata></record> |
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| subjects | AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUSPOLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE APPARATUS THEREFOR CHEMISTRY COLORIMETRY CRYSTAL GROWTH MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT,POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED,VISIBLE OR ULTRA-VIOLET LIGHT MEASURING METALLURGY PHYSICS PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE RADIATION PYROMETRY REFINING BY ZONE-MELTING OF MATERIAL SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE SINGLE-CRYSTAL-GROWTH TESTING UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL ORUNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL |
| title | METHOD FOR PRODUCING THE SENSING ELEMENT OF AN ULTRA-VIOLET INDICATOR |
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