摘要:
The optical glasses have increased refractive indices and are useful for making space-saving and light-weight imaging optics with lenses of different glass types for use in different objects travelling in space. The optical glasses are suitable for production of optics having low total weight, which is decisive for space applications. These space glasses have high UV- and VIS-transmittance in a range of between 300 and 800 nm and high stability of transmittance over a period of years, because their aging has been greatly limited.
摘要:
The space glasses have a composition, in wt. % based on oxide content, including SiO2, 12-45; B2O3, 0-4; Al2O3, 0-4; TiO2, 0-5; PbO, 50-82; Na2O, 0-4; K2O, 0-8; and at least 0.1 wt. % of a total amount of at least three doping agents selected from CeO2, MoO3, Bi2O3, WO3, Ag2O, SnO2, Sb2O3 and As2O3. Light-weight and space-saving optical systems for outer space applications can be made with these space glasses, which have high UV- and VIS-transmittance and high transmittance stability, because of their high radiation resistance based on their dopant content. A preferred process for making the space glass includes melting the above-stated oxide ingredients in a quartz crucible at 1050° C. to 1200° C. to form a melt and refining the melt at 1230° C. to 1350° C.
摘要翻译:空间眼镜具有以重量计的组合物。 基于氧化物含量的%,包括SiO 2,12-45; B2O3,0-4; Al2O3,0-4; TiO2,0-5; PbO,50-82; Na2O,0-4; K2O,0-8; 和至少0.1wt。 总共含有选自CeO 2,MoO 3,Bi 2 O 3,WO 3,Ag 2 O,SnO 2,Sb 2 O 3和As 2 O 3中的至少3种掺杂剂的总量的%。 由于其基于其掺杂剂含量的高耐辐射性,可以利用这些具有高的UV和VIS透射率和高透射率稳定性的这些空间玻璃来制造用于外层空间的轻量和节省空间的光学系统。 用于制造空间玻璃的优选方法包括在1050℃至1200℃下在石英坩埚中熔化上述氧化物成分,以在1230℃至1350℃形成熔体并将熔体精炼。
摘要:
The space glass has a composition, in wt. % based on oxide content, of: SiO2, 5-65; B2O3, 0-40; Al2O3, 0-12; PbO, 25-50; Na2O 0-8; K2O, 0-20; Σ alkali metal oxides, at least 0.25; and at least 0.1 wt. % of a total amount of three or more doping agents selected from CeO2, MoO3, Bi2O3, WO3, Ag2O, SnO2, Sb2O3 and As2O3. In addition, it contains one or more of the following doping agents in the following amounts: at most 1 wt. %, CeO2; at most 0.02 wt. %, As2O3; at most 0.3 wt. %, Sb2O3; and at most 0.5 wt. %, SnO2. Light-weight optical systems for space are made from it, because of its high radiation resistance. A preferred process for making space glass includes melting the oxide starting ingredients at 1050° C. to 1200° C. to form a melt and refining the melt at 1230° C. to 1350° C.
摘要:
The optical glasses have increased refractive indices and are useful for making space-saving and light-weight imaging optics with lenses of different glass types for use in different objects travelling in space. The optical glasses are suitable for production of optics having low total weight, which is decisive for space applications. These space glasses have high UV- and VIS-transmittance in a range of between 300 and 800 nm and high stability of transmittance over a period of years, because their aging has been greatly limited.
摘要:
Magnetic disks comprising a substrate and glass materials which are used in the manufacture of hard disc substrates. The glasses can have the following compositions (in per cent by weight on an oxide basis): SiO2 10-30, Al2O3 0-5, B2O3 0-8, Li2O 0-8, Na2O 1-10, with Li2O+Na2O 5-10, K2O 0-3, MgO 5-16, CaO 0-15, with MgO+CaO>15-25, SrO+BaO 0-8, ZrO2 0-8, TiO2 7-25, La2O3 0-10, Nb2O5 5-20, V2O5 0-10, CeO2 0-1, As2O3+Sb2O3+F 0.1-1. These glasses can have high dimensional stability as a result of their high specific modulus of elasticity, to be especially suited for hard disk substrates.
摘要翻译:包括用于制造硬盘基板的基板和玻璃材料的磁盘。 玻璃可以具有以下组成(以氧化物为基准的重量百分比):SiO 2 10-30,Al 2 O 3 0-5,B 2 O 3 0-8,Li 2 O 0-8,Na 2 O 1-10与Li 2 O + Na 2 O 5 - 10,K2O 0-3,MgO 5-16,CaO 0-15,MgO + CaO> 15-25,SrO + BaO 0-8,ZrO 2 0-8,TiO 2 7-25,La 2 O 3 0-10,Nb 2 O 5 5 -20,V2O5 0-10,CeO2 0-1,As2O3 + Sb2O3 + F 0.1-1。 这些玻璃由于其高比弹性模量而具有高的尺寸稳定性,特别适用于硬盘基片。
摘要:
The thin-film solar cell includes at least one Na2O-containing multicomponent substrate glass. The substrate glass contains less than 1% by weight of B2O3, less than 1% by weight of BaO and a total of less than 3% by weight of CaO+SrO+ZnO, the molar ratio of the substrate glass components, (Na2O+K2O)/(MgO+CaO+SrO+BaO), is greater than 0.95, the molar ratio of the substrate glass components SiO2/Al2O3 is less than 7 and the substrate glass has a glass transition temperature Tg of greater than 550° C., in particular greater than 600° C. The thin-film solar cells made with this substrate glass have improved efficiencies in comparison to thin-film solar cells of the prior art.
摘要翻译:薄膜太阳能电池包括至少一种含Na 2 O的多组分底物玻璃。 基板玻璃含有小于1重量%的B 2 O 3,小于1重量%的BaO和总计小于3重量%的CaO + SrO + ZnO,基板玻璃组分的摩尔比(Na 2 O + K 2 O)/(MgO + CaO + SrO + BaO)大于0.95,基板玻璃成分SiO 2 / Al 2 O 3的摩尔比小于7,基板玻璃的玻璃化转变温度Tg高于550℃。 ,特别是大于600℃。与现有技术的薄膜太阳能电池相比,用该基板玻璃制成的薄膜太阳能电池具有提高的效率。
摘要:
High E-moduli glasses and glass-ceramics are disclosed based on the SiO2—B2O3—RO—R2O—ZrO2—TiO2—Nb2O5—La2O3 system. The chemically pre-stressable glasses are lithium-poor or lithium-free. The glass-ceramics contain from 2 to 9 percent by weight lithium and the predominant crystalline phase is lithium titanate. These glasses and glass-ceramics particularly have a high specific E-modulus.
摘要:
The electronic semiconductor component has a crystalline wafer substrate with an active surface and a semiconductor layer coating the active surface. So that the semiconductor layer has a few surface defects the crystalline wafer substrate is a sapphire or silicon carbide single crystal and the active surface has a pit density of less than 500 pit/cm2, preferably less than 100 pit/cm2. The polishing method for obtaining the active surface with these pit densities includes polishing with a polishing agent, such as a silicon suspension, and a polishing tool, which is pressed on the active surface with a pressure of preferably from 0.05 to 0.2 kg/cm2 and moved over the active surface with polishing motions distributed statistically and uniformly over a 360° angle during polishing.
摘要翻译:电子半导体部件具有具有有源面的晶片基板和涂覆有源面的半导体层。 为了使半导体层具有几个表面缺陷,晶片衬底是蓝宝石或碳化硅单晶,并且活性表面的凹坑密度小于500凹坑/ cm 2,优选小于100 凹坑/ cm 2。 用于获得具有这些凹坑密度的活性表面的抛光方法包括用抛光剂如硅悬浮液和抛光工具进行抛光,抛光工具以优选0.05-0.2kg / cm 2的压力压在活性表面上, SUP> 2并且在抛光期间在360°角度上统计均匀地分布抛光运动而在有源表面上移动。
摘要:
In the method and apparatus for measuring the position of the phase interface during growth of a crystal from a melt in a crystal growth container according to the VGF method an incident optical signal is propagated to the phase interface between the melt and the crystal through a window (16) in the container (10) and a received optical signal reflected from the phase interface (14) is measured to determine the position of the phase interface. The position of the phase interface is established from the reflected signal by triangulation with a confocal optic system, by interferometric balancing or by transit time of the optical signal. The window (16) is preferably mounted in a preferably tilted orientation at the end of a tube (15), which is immersed in the melt (12).
摘要:
The method for making a uniform, large-size single crystal of calcium fluoride includes placing a single precursor crystal of calcium fluoride in a tempering vessel provided with a cover; introducing calcium fluoride powder into the tempering vessel and subsequently heating the single precursor crystal, preferably in intimate contact with the calcium fluoride powder, in the tempering vessel together with the calcium fluoride powder for two or more hours at temperatures above 1150° C. to temper the precursor crystal and thus form the uniform, large-scale single crystal of calcium fluoride. The uniform large-sized single crystals of calcium fluoride can be used to make improved lens, prism, light-conducting rod, optical window or other optical component for DUV photolithography, steppers, excimer lasers, wafers, computer chips and electronic devices containing the wafers and chips.