摘要:
The invention provides a method for producing a glass ceramic comprising the steps of melting a starting glass that is free from alkali, except for incidental contamination, and that contains at least one garnet-forming agent and at least one oxide of a lanthanoid; grinding the starting glass to produce a glass frit; molding by pressing and sintering the glass frit until at least one garnet phase containing lanthanoids is formed. A glass ceramic produced in this way may contain 5-50 % by weight of SiO2, 5-50 % by weight of Al2O3 and 10-80 % by weight of at least one oxide selected from the group formed by Y2O3, Lu2O3, Sc2O3, Gd2O3, Yb2O3, Ce2O3, as well as 0.1-30% by weight of at least one oxide selected from the group formed by B2O3, Th2O3, and oxides of the lanthanoids, except Lu2O3, Gd2O3, Yb2O3, Ce2O3. Such a glass ceramic is suited especially for down conversion of excitation radiation in the blue and in the UV region of the spectrum.
摘要翻译:本发明提供了一种制备玻璃陶瓷的方法,包括以下步骤:熔化除了偶然污染之外不含碱的起始玻璃,并含有至少一种石榴石形成剂和至少一种镧系元素氧化物; 研磨起始玻璃以生产玻璃料; 通过压制和烧结玻璃料成型至含有镧系元素的至少一个石榴石相。 以这种方式制造的玻璃陶瓷可以含有5-50重量%的SiO 2,5-50重量%的Al 2 O 3和10-80重量%的至少一种选自由Y 2 O 3,Lu 2 O 3,Sc 2 O 3, Gd 2 O 3,Yb 2 O 3,Ce 2 O 3,以及选自B 2 O 3,Th 2 O 3的至少一种氧化物和除了Lu 2 O 3,Gd 2 O 3,Yb 2 O 3,Ce 2 O 3以外的镧系元素的氧化物的至少一种氧化物。 这种玻璃陶瓷特别适用于在光谱的蓝色和紫外区域的激发辐射的下变换。
摘要:
The invention provides a method for producing a glass ceramic comprising the steps of melting a starting glass that is free from alkali, except for incidental contamination, and that contains at least one garnet-forming agent and at least one oxide of a lanthanoid; grinding the starting glass to produce a glass frit; molding by pressing and sintering the glass frit until at least one garnet phase containing lanthanoids is formed. A glass ceramic produced in this way may contain 5-50% by weight of SiO2, 5-50% by weight of Al2O3 and 10-80% by weight of at least one oxide selected from the group formed by Y2O3, Lu2O3, Sc2O3, Gd2O3, Yb2O3, Ce2O3, as well as 0.1-30% by weight of at least one oxide selected from the group formed by B2O3, Th2O3, and oxides of the lanthanoids, except Lu2O3, Gd2O3, Yb2O3, Ce2O3. Such a glass ceramic is suited especially for down conversion of excitation radiation in the blue and in the UV region of the spectrum.
摘要翻译:本发明提供了一种制备玻璃陶瓷的方法,包括以下步骤:熔化除了偶然污染之外不含碱的起始玻璃,并含有至少一种石榴石形成剂和至少一种镧系元素氧化物; 研磨起始玻璃以生产玻璃料; 通过压制和烧结玻璃料成型至含有镧系元素的至少一个石榴石相。 以这种方式制造的玻璃陶瓷可以含有5-50重量%的SiO 2,5-50重量%的Al 2 O 3和10-80重量%的至少一种选自由Y 2 O 3,Lu 2 O 3,Sc 2 O 3, Gd 2 O 3,Yb 2 O 3,Ce 2 O 3,以及选自B 2 O 3,Th 2 O 3的至少一种氧化物和除了Lu 2 O 3,Gd 2 O 3,Yb 2 O 3,Ce 2 O 3以外的镧系元素的氧化物的至少一种氧化物。 这种玻璃陶瓷特别适用于在光谱的蓝色和紫外区域的激发辐射的下变换。
摘要:
The invention provides a method for producing a glass ceramic comprising the steps of melting a starting glass that is free from alkali, except for incidental contamination, and that contains at least one garnet-forming agent and at least one oxide of a lanthanoid; grinding the starting glass to produce a glass frit; molding by pressing and sintering the glass frit until at least one garnet phase containing lanthanoids is formed. A glass ceramic produced in this way may contain 5-50% by weight of SiO2, 5-50% by weight of Al2O3 and 10-80% by weight of at least one oxide selected from the group formed by Y2O3, Lu2O3, Sc2O3, Gd2O3, Yb2O3, Ce2O3, as well as 0.1-30% by weight of at least one oxide selected from the group formed by B2O3, Th2O3, and oxides of the lanthanoids, except Lu2O3, Gd2O3, Yb2O3, Ce2O3. Such a glass ceramic is suited especially for down conversion of excitation radiation in the blue and in the UV region of the spectrum.
摘要翻译:本发明提供了一种制备玻璃陶瓷的方法,包括以下步骤:熔化除了偶然污染之外不含碱的起始玻璃,并含有至少一种石榴石形成剂和至少一种镧系元素氧化物; 研磨起始玻璃以生产玻璃料; 通过压制和烧结玻璃料成型至含有镧系元素的至少一个石榴石相。 以这种方式制造的玻璃陶瓷可以含有5-50重量%的SiO 2,5-50重量%的Al 2 O 3和10-80重量%的至少一种选自由Y 2 O 3,Lu 2 O 3,Sc 2 O 3, Gd 2 O 3,Yb 2 O 3,Ce 2 O 3,以及选自B 2 O 3,Th 2 O 3的至少一种氧化物和除了Lu 2 O 3,Gd 2 O 3,Yb 2 O 3,Ce 2 O 3以外的镧系元素的氧化物的至少一种氧化物。 这种玻璃陶瓷特别适用于在光谱的蓝色和紫外区域的激发辐射的下变换。
摘要:
The invention proposes a method for producing glass ceramics which is particularly well suited as light conversion material, especially for down conversion. One initially produces a starting glass, containing (on an oxide basis) 5-50% by weight of SiO2, 5-50% by weight of Al2O3 and 10-80% by weight of at least one oxide selected from the from the group formed by Y2O3, Lu2O3, Sc2O3, Gd2O3, Yb2O3, Ce2O3, as well as 0.1-30% by weight of at least one oxide selected from the group formed by B2O3, Th2O3, and oxides of the lanthanoids, except Lu2O3, Gd2O3, Yb2O3, Ce2O3. Thereafter, the material is heated up for ceramization at a heating rate of at least 100 K/min to a temperature in the range of between 1000° C. to 1400° C. until crystallites are formed that contain a garnet phase. Thereafter, the material is cooled down to room temperature. Alternatively, controlled cooling-down from the molten state is possible.
摘要翻译:本发明提出一种特别适合作为光转换材料的玻璃陶瓷的制造方法,特别是用于下转换。 最初产生起始玻璃,其含有5-50重量%的SiO 2,5-50重量%的Al 2 O 3和10-80重量%的至少一种氧化物的起始玻璃,所述氧化物选自由Y 2 O 3 ,Lu 2 O 3,Sc 2 O 3,Gd 2 O 3,Yb 2 O 3,Ce 2 O 3,以及选自B 2 O 3,Th 2 O 3的至少一种氧化物和除了Lu 2 O 3,Gd 2 O 3,Yb 2 O 3,Ce 2 O 3以外的镧系元素的氧化物的至少一种氧化物。 此后,将材料以至少100K /分钟的加热速率加热至陶瓷化,至1000℃至1400℃的温度,直至形成含有石榴石相的微晶。 此后,将材料冷却至室温。 或者,可以从熔融状态控制冷却。
摘要:
The invention proposes a method for producing glass ceramics which is particularly well suited as light conversion material, especially for down conversion. One initially produces a starting glass, containing (on an oxide basis) 5-50% by weight of SiO2, 5-50 % by weight of Al2O3 and 10-80% by weight of at least one oxide selected from the from the group formed by Y2O3, Lu2O3, Sc2O3, Gd2O3, Yb2O3, Ce2O3, as well as 0.1-30% by weight of at least one oxide selected from the group formed by B2O3, Th2O3, and oxides of the lanthanoids, except Lu2O3, Gd2O3, Yb2O3, Ce2O3. Thereafter, the material is heated up for ceramization at a heating rate of at least 100 K/min to a temperature in the range of between 1000° C. to 1400° C. until crystallites are formed that contain a garnet phase. Thereafter, the material is cooled down to room temperature. Alternatively, controlled cooling-down from the molten state is possible.
摘要翻译:本发明提出一种特别适合作为光转换材料的玻璃陶瓷的制造方法,特别是用于下转换。 最初产生起始玻璃,其含有(以氧化物为基准)5-50重量%的SiO 2,5-50重量%的Al 2 O 3 > 3重量%和10-80重量%的至少一种氧化物,其选自Y 2 N 3 O 3,Lu 2 3 sub> 3 sub> 3,3 3> 3 SUB> 3 SUB> 3 SUB> ,Yb 2 O 3,Ce 2 O 3,以及0.1-30重量%的 选自由B 2 O 3 O 3,Th 2 O 3 3形成的基团中的至少一种氧化物和氧化物 的镧系元素,除了Lu 2 O 3 3,Gd 2 O 3 N 3,Yb 2, 3个O 3,3个O 3,3个O 3。 此后,将材料以至少100K /分钟的加热速率加热至陶瓷化,至1000℃至1400℃的温度,直至形成含有石榴石相的微晶。 此后,将材料冷却至室温。 或者,可以从熔融状态控制冷却。
摘要:
The invention provides a method for producing a glass ceramic comprising the steps of melting a starting glass that is free from alkali, except for incidental contamination, and that contains at least one garnet-forming agent and at least one oxide of a lanthanoid; grinding the starting glass to produce a glass frit; molding by pressing and sintering the glass frit until at least one garnet phase containing lanthanoids is formed. A glass ceramic produced in this way may contain 5-50 % by weight of SiO2, 5-50 % by weight of Al2O3 and 10-80 % by weight of at least one oxide selected from the group formed by Y2O3, Lu2O3, Sc2O3, Gd2O3, Yb2O3, Ce2O3, as well least one oxide selected from the group formed by B2O3, Th2O3, and oxides of the lanthanoids, except Lu2O3, Gd2O3, Yb2O3, Ce2O3. Such a glass ceramic is suited especially for down conversion of excitation radiation in the blue and in the UV region of the spectrum.
摘要翻译:本发明提供了一种制备玻璃陶瓷的方法,包括以下步骤:熔化除了偶然污染之外不含碱的起始玻璃,并含有至少一种石榴石形成剂和至少一种镧系元素氧化物; 研磨起始玻璃以生产玻璃料; 通过压制和烧结玻璃料成型至含有镧系元素的至少一个石榴石相。 以这种方式制造的玻璃陶瓷可以含有5-50重量%的SiO 2,5-50重量%的Al 2 O 3 3 / >和10-80重量%的至少一种氧化物,其选自由Y 2 O 3 N 2,O 2 O 3,N 2 O 3, > 3 sub> 3,3 3>,3 3> 3, 以及至少一种选自由B 2 O 3 O 3所形成的基团的氧化物, anthan anthan anthan anthan <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< 3个,3个,3个,3个,3个,3个,3个,3个,3个,3个, 2 O> 3。 这种玻璃陶瓷特别适用于在光谱的蓝色和紫外区域的激发辐射的下变换。
摘要:
A glass-ceramic having at least two crystal phases, wherein at least one crystal phase has a positive temperature dependence of the resonance frequency τf, at least one crystal phase has a negative temperature dependence of the resonance frequency τf and the glass-ceramic has a resulting temperature dependence of the resonance frequency τf of 0 ppm/K with a maximum deviation of +/−20 ppm/K, is described. Furthermore, a process for producing such a glass-ceramic and the use of the glass-ceramic are described.
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 process of making the glass-ceramic includes ceramicizing a starting glass at a heating or cooling rate during the ceramicization of at least 10 K/min, so that the glass-ceramic contains at least 50% by volume of ferroelectric crystallites with a maximum diameter of from 20 to 100 nm and not more than 10% by volume of nonferroelectric crystallitesis. The glass ceramic produced by the process contains no pores or not more than 0.01% by volume of the pores and a value of e′·V2max of the glass-ceramic is at least 20 (MV/cm)2, wherein e′ is the dielectric constant at 1 kHz and Vmax is the breakdown voltage per unit thickness. The ferroelectric crystallites preferably have a perovskite structure and are composed of substantially pure or doped BaTiO3 and/or BaTi2O5.
摘要:
A glass-ceramic which is particularly suitable as dielectric for use in the high-frequency range, in particular as dielectric resonator, as electronic frequency filter element or as antenna element is disclosed. The glass-ceramic has at least the following constituents (in mol % on an oxide basis): 5-50% of SiO2, 0-20% of Al2O3, 0-25% of B2O3, 0-25% of BaO, 10-60% of TiO2, 5-35% of Re2O3, where Ba can be partly replaced by Sr, Ca, Mg, where Re is a lanthanide or yttrium and where Ti can be partly replaced by Zr, Hf, Y, Nb, V, Ta.
摘要翻译:公开了特别适用于高频范围的电介质的玻璃陶瓷,特别是作为电介质谐振器的电子频率滤波器元件或天线元件。 玻璃陶瓷至少具有以下成分(以氧化物为基准的摩尔%):5-50%的SiO 2,0-20%的Al 2 O 3,0-25%的B 2 O 3,0-25%的BaO, 60%的TiO 2,5-35%的Re 2 O 3,其中Ba可以部分地被Sr,Ca,Mg替代,其中Re是镧系元素或钇,其中Ti可以部分地被Zr,Hf,Y,Nb, Ta