The phosphor ceramic is characterized in that the matrix is composed of calcium fluoride, strontium fluoride or lanthanum fluoride, or alternatively composed of calcium fluoride and strontium fluoride.
AB 050 Calcium fluoride sludge
The preferred divalent fluoride dopants are calcium fluoride, strontium fluoride, and barium fluoride.
Optionally, the composition can contain calcium fluoride (CaF2), magnesium fluoride (MgF2), lithium fluoride (LiF) and/or magnesium fluoride (NaF).
A flux for electroslag welding contains calcium fluoride and calcium oxide and, in addition to that, calcium chloride, the proportion between calcium fluoride and calcium oxide being equal to 3:1.
Containing by weight more than 97 % of calcium fluoride
Containing by weight 97 % or less of calcium fluoride
Fluorspar containing by weight 97 % of calcium fluoride
Fluorspar containing by weight 97 % of calcium fluoride
Containing by weight 97 % or less of calcium fluoride
Containing by weight 97 % or less of calcium fluoride
Fluorspar containing by weight ≤ 97 % of calcium fluoride
Fluorspar containing by weight ≤ 97 % calcium fluoride
A process is disclosed for producing calcium fluoride.
The present invention relates to a doped calcium fluoride and in particular to a calcium fluoride precipitate doped with Eu and to a method for producing such a phosphor.
a monocrystalline calcium fluoride lens with a diameter of 18 mm (± 0,05 mm)
Tetrafluoroethylene is obtained by subjecting metal fluoride, such as sodium fluoride, calcium fluoride or silicon fluoride, to a plasma to form a gaseous mixture of metal and reactive fluorine.
In the production of hydrogen fluoride, calcium fluoride is treated with sulfuric acid, precipitating calcium sulfate.
The salts consist of calcium fluoride, calcium phosphate, calcium sulfate, sodium phosphate, sodium chloride and silica.
Optionally, calcium fluoride, or other fluoride can be added to the starting mixture, if it is not already contained in the dross residue.
The baking resistance can be improved by calcium fluoride (4).
Fluorine (F) is widely known in the forms of calcium fluoride, tin fluoride, sodium monofluorophosphate, sodium fluoride.
Also disclosed are compositions containing calcium fluoride nanoparticles.
In order to recover the very expensive gaseous fluorine used, the dissolved sodium fluoride formed by chemical reaction is converted into insoluble calcium fluoride with the aid of calcium oxide or calcium hydroxide and subsequently electrolysed.
Silicofluorides are 85 times more toxic than naturally-occurring calcium fluoride.
Fluorides appear in two forms such as calcium fluoride and sodium fluoride.
The protective layer is preferably transparent and possesses a low permeability for oxygen (e.g., silicon oxide, magnesium fluoride, calcium fluoride).
The calcium chloride produced during the process can be used in the combustion reaction to further produce calcium fluoride.
The composition is stable as against precipitation of calcium fluoride during transport and storage, but is unstable against the precipitation of calcium fluoride in the oral cavity of a human.
Iodine has been shown to increase urinary excretion of sodium fluoride from the body, changing the form of calcium fluoride.
Requêtes fréquentes français :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k,
Requêtes fréquentes anglais :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k,
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