22-09-2022 дата публикации
Номер: US20220298060A1
Принадлежит:
Provided is a phosphate glass that has a low melting point and has excellent water resistance while maintaining a glass structure. This phosphate glass PGS has a glass transition temperature Tg lower than 490° C. and contains, in oxide-based mol %, 55-65 [mol %] of PO, 10-27 [mol %] of ZnO, 0.5-7 [mol %] of RO((ROis at least one of AlO, GaO, and YO), 0.5-3.5 [mol %] of a lanthanoid oxide LO(LOis at least one of LaO, CeO, PrO, NdO, PmO, SmO, EuO, GdO, TbO, DyO, HoO, ErO, TmO, YbO, and LuO), and 4-15 [mol %] of XO (XO is at least one of LiO, NaO, KO, RbO, CsO, and FrO). 1. Phosphate glass comprising , in terms of mole percentage based on oxides:{'sub': 2', '5, '55 to 65 [mol %] of PO;'}10 to 27 [mol %] of ZnO;{'sub': 2', '3', '2', '3', '2', '3', '2', '3, '0.5 to 7 [mol %] of RObeing at least one of AlO, GaO, or YO;'}{'sub': 2', '3', '2', '3', '2', '3', '2', '3', '2', '3', '2', '3', '2', '3', '2', '3', '2', '3', '2', '3', '2', '3', '2', '3', '2', '3', '2', '3', '2', '3', '2', '3, '0.5 to 3.5 [mol %] of a lanthanoid oxide LObeing at least one of LaO, CeO, PrO, NdO, PmO, SmO, EuO, GdO, TbO, DyO, HoO, ErO, TmO, YbO, or LuO; and'}{'sub': 2', '2', '2', '2', '2', '2', '2, '4 to 15 [mol %] of XO being at least one of LiO, NaO, KO, RbO, CsO, or FrO, the phosphate glass having a glass transition temperature of lower than 490° C.'}2. The phosphate glass according to claim 1 , wherein{'sub': 2', '5, 'a total content of the POand the ZnO is 68 to 85 [mol %], and'}{'sub': 2', '3', '2', '3, 'a total content of the ROand the LOis 1 to 10 [mol %].'}3. The phosphate glass according to claim 1 , wherein the glass transition temperature is 240° C. or lower.4. The phosphate glass according to claim 3 , wherein a content of the AlOis 1 to 5 [mol %].5. The phosphate glass according to claim 3 , further comprising 0.001 to 10.0 [mol %] of SnO.6. The phosphate glass according to claim 1 , wherein the glass transition temperature is higher than 240° C.7. The phosphate glass according to claim ...
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