摘要:
Zinc-containing optical glass materials with a refractive index nd between 1.52 and 1.66, an Abbe number νd of between 35 and 54 and a composition (in % by weight based on oxide) of: SiO2 38-58, ZnO 0.3-42, PbO 0-
摘要翻译:折射率nd在1.52和1.66之间的含锌光学玻璃材料,阿贝数nud在35和54之间,组成(以氧化物重量%计)为:SiO 2 38-58,ZnO 0.3-42,PbO 0〜30,ZnO + PbO 20-55,Li 2 O 0〜3,NA 2 O 0-14,K 2 O 12〜12,Li 2 O + Na 2 O + K 2 O 2 = F 0-3,MgO 0-6,CaO 0〜 <5,SrO 0-6,BaO 0- <0.9,B 2 O 3 0- <1,AL 2 O 3 0- <1.5和ZRO 2 0-,以及(如果合适的话)常规量的澄清剂。
摘要:
Zinc-containing optical glass materials with a refractive index nd between 1.52 and 1.66, an Abbe number νd of between 35 and 54 and a composition (in % by weight based on oxide) of: SiO2 38–58, ZnO 0.3–42, PbO 0–
摘要翻译:具有介于1.52和1.66之间的折射率n D u>的含Zn的光学玻璃材料,35至54之间的阿贝数nu sub>以及组成(以重量%计 氧化物):SiO 2 38-58,ZnO 0.3-42,PbO 0- <30,ZnO + PbO 20-55,Li 2 O 0- 3 ,NA 2 O 0-14,K 2 O 0-12,Li 2 O + Na 2 O + K 2 O 2 = 2,F 0-3,MgO 0-6,CaO 0- <5,SrO 0-6,BaO 0- <0.9,B 2 SUB 3 O 3 - 0 - <1,AL 2 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2,如果合适,以常规金额提炼精炼剂。
摘要:
Zinc-containing optical glass materials with a refractive index nd between 1.52 and 1.66, an Abbe number vd of between 35 and 54 and a composition (in % by weight based on oxide) of: SiO2 38-58, ZnO 0.3-42, PbO 0-
摘要翻译:折射率nd在1.52和1.66之间的含锌光学玻璃材料,阿贝数vd在35和54之间,组成(以氧化物重量%计):SiO 2 38-58,ZnO 0.3-42,PbO 0〜30,ZnO + PbO 20-55,Li 2 O 0〜3,NA 2 O 0-14,K 2 O 12〜12,Li 2 O + Na 2 O + K 2 O 2 = F 0-3,MgO 0-6,CaO 0〜 <5,SrO 0-6,BaO 0- <0.9,B 2 O 3 0- <1,AL 2 O 3 0- <1.5和ZRO 2 0-,以及(如果合适的话)常规量的澄清剂。
摘要:
An optical glass for the manufacture of large transmission optics, such as lenses having a thickness of 100 millimeters or more, comprises 35 to 70 wt.-% SiO2, 17 to 35 wt.-% Al2O3, 3 to 17 wt.-% P2O5, 0 to 6 wt.-% Li2O, 0.5 to 4 wt.-% MgO, 0.5 to 3 wt.-% ZnO, a maximum of 1 wt.-% CaO, a maximum of 0.5 wt.-% BaO, 0.5 to 6 wt.-% TiO2, 0.5 to 3 wt.-% ZrO2, 0 to 1 wt.-% Na2O, 0 to 1 wt.-% K2O, a maximum of 1 wt.-% of refining agents (As2O3, SP2O3) and a maximum of 500 ppm of other contaminants. The glass composition may be equal to the composition of the glass ceramic Zerodur® and allows to manufacture large transmission optics in a cost-effective way, has a maximum of transmittance which is in the range of a He—Ne lasers and has a CTE of about 3·10−6/K.
摘要翻译:用于制造大透射光学器件的光学玻璃,例如厚度为100毫米或更大的透镜,包括35至70重量%的SiO 2,17至35重量%的Al 2 O 3,3至17重量%的P 2 O 5 ,0至6重量%的Li 2 O,0.5至4重量%的MgO,0.5至3重量%的ZnO,最多1重量%的CaO,最多0.5重量%的BaO,0.5至 6重量%TiO 2,0.5至3重量%ZrO 2,0至1重量%Na 2 O,0至1重量%K 2 O,最多1重量%的澄清剂(As 2 O 3,SP 2 O 3) 最多500ppm的其他污染物。 玻璃组合物可以等于玻璃陶瓷Zerodur®的组成,并且允许以成本有效的方式制造大透射光学器件,其具有在He-Ne激光器的范围内的最大透射率,并且具有CTE 约3·10-6 / K。
摘要:
An optical glass for the manufacture of large transmission optics, such as lenses having a thickness of 100 millimeters or more, comprises 35 to 70 wt.-% SiO2, 17 to 35 wt.-% Al2O3, 3 to 17 wt.-% P2O5, 0 to 6 wt.-% Li2O, 0,5 to 4 wt.-% MgO, 0,5 to 3 wt.-% ZnO, a maximum of 1 wt.-% CaO, a maximum of 0,5 wt.-% BaO, 0,5 to 6 wt.-% TiO2, 0,5 to 3 wt.-% ZrO2, 0 to 1 wt.-% Na2O, 0 to 1 wt.-% K2O, a maximum of 1 wt.-% of refining agents (As2O3, SP2O3) and a maximum of 500 ppm of other contaminants. The glass composition may be equal to the composition of the glass ceramic Zerodur® and allows to manufacture large transmission optics in a cost-effective way, has a maximum of transmittance which is in the range of a He—Ne lasers and has a CTE of about 3·10−6/K.
摘要:
There is disclosed a stove, with a smooth-top cooktop, for cooking food, the stove comprising: a stove body; a smooth-top cooktop to cook food thereon; and at least one heat source disposed adjacent to a cooking surface of said cooktop. The cooktop comprises glass ceramic with an upper layer and an inner layer, with the upper layer comprising a different glass ceramic material than the inner layer. The upper layer is configured to minimize surface defects such as fissures, cracks, pits, and pores. The inner layer is configured to provide resistance to impact to the upper layer from cooking utensils being dropped onto the upper layer of the smooth-top cooktop, and at least the inner layer of the glass ceramic being configured to obscure visibility of the at least one heat source, through the upper layer of the glass ceramic.
摘要:
The present invention relates to a process for producing a glass-ceramic with a defined zero crossing of the CTE-T curve (CTE: coefficient of thermal expansion), and glass-ceramic products produced using the process according to the invention.
摘要:
A lead and cadmium free glass for decorating and enamelling glasses or glass-ceramics having a small coefficient of thermal expansion is disclosed comprising the following components (in wt.-%): Σ (Li2O+Na2O+K2O) 0 to 10, Σ (MgO+CaO+SrO)≧0.1, SiO2>65. Preferably, the glass according to the invention is mixed as a glass frit with pigments, fillers and other additions and applied to glasses or glass-ceramics having a very small thermal expansion. Bending strengths of more than 70 MPa can be reached, in particular when coating substrates made of lithium aluminum silicate glass-ceramics.
摘要翻译:公开了一种用于装饰和搪瓷玻璃的无铅和无镉玻璃或具有小的热膨胀系数的玻璃陶瓷,其包含以下组分(重量%):Sigma(Li 2 O + Na 65(O + K 2 O)0〜10,Sigma(MgO + CaO + SrO)= 0.1,SiO 2 <65。 优选地,根据本发明的玻璃作为具有颜料,填料和其它添加剂的玻璃料混合并且应用于具有非常小的热膨胀的玻璃或玻璃陶瓷。 可以达到70MPa以上的弯曲强度,特别是当涂覆由硅酸铝锂玻璃陶瓷制成的基材时。
摘要:
A process for the production of a glass-ceramic comprises the following steps: a) providing a mixture comprising at least SiO2, Al2O3, BaO and TiO2, b) melting the mixture in order to produce a glass phase, c) cooling the glass phase, and d) ceramicizing the glass phase. In the process, the glass phase is heated over the course of at most 5 minutes, preferably over the course of at most 3 minutes, to a temperature in the region of the crystallization temperature of Ba1-xZ1xTi1-yZ2yO3, whereby Z1 is an element selected from the group consisting of Sr, Ca, Ce, Pb, La and Sm, whereby Z2 is an element selected from the group consisting of Zr, Hf, Nb, V, Y, Sc and Ta, and whereby x and y are each independently of one another 0≦x,y≦0.5, preferably 0≦x,y≦0.1, but substantially below the crystallization temperature of Ba[Al2Si2O8].
摘要翻译:制备玻璃陶瓷的方法包括以下步骤:a)提供至少包含SiO 2,Al 2 O 3,BaO和TiO 2的混合物,b)熔化混合物以产生玻璃相,c)冷却玻璃相 ,和d)陶瓷化玻璃相。 在该过程中,将玻璃相在至多5分钟的时间内,优选在3分钟以上加热至Ba1-xZ1xTi1-yZ2yO3的结晶温度区域的温度,由此Z1是元素 选自由Sr,Ca,Ce,Pb,La和Sm组成的组,其中Z 2是选自Zr,Hf,Nb,V,Y,Sc和Ta的元素,并且其中x和y各自 彼此独立的是0和nlE; x,y和nlE; 0.5,优选0&amp; nlE; x,y&nlE; 0.1,但基本上低于Ba [Al 2 Si 2 O 8]的结晶温度。
摘要:
The present invention relates to a novel glass ceramic having a low or small average thermal expansion together with good polishability and processability, to the use of the glass ceramic according to the invention, and to optical components made of the glass ceramic. In particular, a glass ceramic is provided which comprises the following composition (in % by weight based on oxide): SiO250–70 Al2O317–32 P2O5 3–12 Li2O2.5–5 Na2O0–2 K2O0–2 MgO0–2 CaO0.1–4 BaO 0–