摘要:
Exemplary embodiments of the present invention provide lithium disilicate crystalline glass containing cristobalite crystal phase for high strength and aesthetic traits and its manufacturing process thereof. More specifically, exemplary embodiments of the present invention provide the high strength and aesthetic lithium disilicate crystalline glass, one kind of dental restoration materials, and its manufacturing method which induces the growth of the different crystal phase, cristobalite, from glass with lithium disilicate crystal. Exemplary embodiments of the present invention propose a lithium disilicate crystalline glass containing cristobalite crystal phase in glass matrix in the system of 11 - 13 wt% Li 2 O, 70.0 - 77.0 wt% SiO 2 , 2 - 3wt% P 2 O 5 working as nuclear formation agent, 2 - 5 wt% Al 2 O 3 to increase glass transition temperature and softening temperature, as well as chemical durability of the glass, 2.0- 3.0 wt% ZrO 2 , 1 - 4 wt% colorants, not including MgO, ZnO, F, and La 2 O 3 , because they reduce light transmittance.
摘要:
Exemplary embodiments of the present invention provide lithium disilicate crystalline glass containing cristobalite crystal phase for high strength and aesthetic traits and its manufacturing process thereof. More specifically, exemplary embodiments of the present invention provide the high strength and aesthetic lithium disilicate crystalline glass, one kind of dental restoration materials, and its manufacturing method which induces the growth of the different crystal phase, cristobalite, from glass with lithium disilicate crystal. Exemplary embodiments of the present invention propose a lithium disilicate crystalline glass containing cristobalite crystal phase in glass matrix in the system of 11 - 13 wt% Li 2 O, 70.0 - 77.0 wt% SiO 2 , 2 - 3wt% P 2 O 5 working as nuclear formation agent, 2 - 5 wt% Al 2 O 3 to increase glass transition temperature and softening temperature, as well as chemical durability of the glass, 2.0- 3.0 wt% ZrO 2 , 1 - 4 wt% colorants, not including MgO, ZnO, F, and La 2 O 3 , because they reduce light transmittance.
摘要翻译:本发明的示范实施例提供的焦硅酸锂晶体玻璃方石英含结晶相的高强度和美学特性和它的制造工艺物。 更具体地,本发明的示例性实施例提供了高强度和美学二硅酸锂的结晶玻璃,一种牙科用修复材料,它的制造方法,其与二硅酸锂晶体诱导不同的晶相,方石英的生长,从玻璃。 本发明的示范性实施例提出了一种二硅酸锂的结晶玻璃包含在玻璃基体的方英石的结晶相在11系统 - 13重量%的Li 2 O,70.0 - 77.0%(重量)的SiO 2,2 - 3%(重量)P 2 O 5的工作如 核形成剂,2 - 5重量%的Al 2 O 3以提高玻璃化转变温度和软化温度,以及玻璃的化学耐久性,2.0- 3.0重量%的ZrO 2,1 - 4%(重量)的着色剂,不包括的MgO, 氧化锌,F,和La 2 O 3,因为它们减少了透光率。
摘要:
An imaging apparatus (6) for imaging a subject image from a lens (31) on an imaging element (4) through an optical filter has a porous body (5) having pores (1) which three dimensionally communicate with each other at least at a side opposite to the imaging element (4) of the optical filter.
摘要:
Die Erfindung betrifft eine Strahlbearbeitungsvorrichtung (2), insbesondere lonenstrahlbearbeitungsvorrichtung, zur Bearbeitung von Oberflächen von Werkstücken (4), insbesondere Linsen, (32). Die Werkstücke (4) werden in einer Werkstückhalterung (10) gehalten und mit einem Bearbeitungskopf (20), wobei im Bearbeitungszustand die Werkstückhalterung (10) entlang einer ersten Achse (Y) verfahrbar ist und der Bearbeitungskopf (20) entlang einer von der ersten Achse (Y) verschiedenen zweiten Achse (X) verfahrbar ist.
摘要:
A glass composition for preparing an inorganic fiber, characterized in that it comprises 52 to 72 wt % of SiO2, less than 3 wt % of Al2O3, 0 to 7 wt % of MgO, 7.5 to 9.5 wt % of CaO, 0 to 12 wt % of B2O3, 0 to 4 wt % of BaO, 0 to 3.5 wt % of SrO, 10 to 20.5 wt % of Na2O, 0.5 to 4.0 wt % of K2O, and 0 to 5 wt % of P2O5; and the glass composition produced from a raw material which comprises 0 to 50 wt % of a glass from a cathode ray tube or a liquid crystal device. The glass composition has improved bio-solubility (solubility into the physiological saline solution), and is suitable for preparing an inorganic fiber and a formed product from the fiber.
摘要:
Oscillation/rotation patterns for improving the off axis homogeneity of fused silica boules are provided. The patterns reduce the optical effects of periodic off-axis striae by decreasing the ratio of Δn striae to Δz striae , where Δn striae is the average peak-to-valley magnitude of the striae and Δz striae is there average peak-to-peak period. The oscillation/rotation patterns have long repeat periods and cause soot-producing burners to trace out substantially spiral-shaped patterns on the surface of the boule.