09-05-2013 дата публикации
Номер: US20130112919A1
Принадлежит:
A white light emitting glass-ceramic. The chemical formula of the glass-ceramic is aSiO.bAlO.cNaF.dCeF.nDyF.mAg, wherein a, b, c, d, n and m are, by mol part, 25-50, 15-30, 10-30, 10-25, 0.01-1 and 0.01-1, respectively, and a+b+c+d-100. A method for producing said glass-ceramic is also provided. Silver ion is doped in the glass-ceramic in the form of silver particles by means of sintering and reduction annealing treatment, and thus the luminescence properties of rare earth ion is improved. 1. A glass ceramic emitting white light , having a chemical formula of:{'br': None, 'i': a', '.b', '.c', 'd', '.n', '.m, 'sub': 2', '2', '3', '3', '3, 'SiOAlONaF.CeFDyFAg,'}wherein a, b, c, d, n and m represent molar parts, and the values of a, b, c, d, n and m are: a is 25˜50, b is 15˜30, c is 10˜30, d is 10˜25, n is 0.01˜1, m is 0.01˜1, and a+b+c+d=100.2. The glass ceramic emitting white light according to claim 1 , wherein the values of a claim 1 , b claim 1 , c claim 1 , d claim 1 , n and m are: a is 35˜50 claim 1 , b is 20˜30 claim 1 , c is 10˜20 claim 1 , d is 10˜20 claim 1 , n is 0.1˜1.3. The glass ceramic emitting white light according to claim 1 , wherein m is 0.01˜0.5.4. A method for producing a white light emitting glass ceramic claim 1 , comprising:{'sub': 2', '2', '3', '3', '3', '3', '2', '2', '3', '3', '3, 'providing raw materials SiO, AlO, NaF, CeF, DyFand AgNOin a stoichiometric ratio according to a chemical formula of aSiO.bAlO.cNaF.dCeF.nDyF.mAg, milling and mixing the raw materials to produce a mixed powder, wherein a, b, c, d, n and m represent molar parts, and the values of a, b, c, d, n and m are: a is 25˜50, b is 15˜30, c is 10˜30, d is 10˜25, n is 0.01˜1, m is 0.01˜1, and a+b+c+d=100;'}calcinating the mixed powder to produce a glass precursor; and {'br': None, 'i': a', '.b', '.c', 'd', '.n', '.m, 'sub': 2', '2', '3', '3', '3, 'SiOAlONaF.CeFDyFAg.'}, 'reductively annealing the glass precursor in a reductive atmosphere, and cooling to produce the white light ...
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