摘要:
A method of ion exchanging glass and glass ceramic articles. The method includes immersion of at least one such article in an ion exchange bath having a first end and a second end that are heated to first and second temperatures, respectively. The first and second temperature may either be equal or different from each other, with the latter state creating a temperature gradient across or along the ion exchange bath. Continuous processing of multiple articles is also possible in the ion exchange bath.
摘要:
This disclosure teaches the use of low density, “open”-structure glasses as backing glasses, behind glass-ceramic strike-faces, in transparent armor composite windows. These low density “open-structure’ glasses are sometimes referred to as “anomalous” glasses. For transparent armor applications both silica, including fused silica, and borosilicate glasses can be used as backing glass. These backing glasses provide improved ballistics performance over that of standard commercial soda lime backing glass. These glasses should be used either in their as-formed state (e.g. float surfaces) or should be finished using a process designed for minimizing sub-surface damage.
摘要:
Methods and apparatus for forming a semiconductor on glass-ceramic structure provide for: subjecting an implantation surface of a donor semiconductor wafer to an ion implantation process to create an exfoliation layer of the donor semiconductor wafer; bonding the implantation surface of the exfoliation layer to a precursor glass substrate using electrolysis; separating the exfoliation layer from the donor semiconductor wafer to thereby form an intermediate semiconductor on precursor glass structure; sandwiching the intermediate semiconductor on precursor glass structure between first and second support structures; applying pressure to one or both of the first and second support structures; and subjecting the intermediate semiconductor on precursor glass structure to heat-treatment step to crystallize the precursor glass resulting in the formation of a semiconductor on glass-ceramic structure.
摘要:
Methods and apparatus for forming a semiconductor on glass-ceramic structure provide for: subjecting an implantation surface of a donor semiconductor wafer to an ion implantation process to create an exfoliation layer of the donor semiconductor wafer; bonding the implantation surface of the exfoliation layer to a precursor glass substrate using electrolysis; separating the exfoliation layer from the donor semiconductor wafer to thereby form an intermediate semiconductor on precursor glass structure; sandwiching the intermediate semiconductor on precursor glass structure between first and second support structures; applying pressure to one or both of the first and second support structures; and subjecting the intermediate semiconductor on precursor glass structure to heat-treatment step to crystallize the precursor glass resulting in the formation of a semiconductor on glass-ceramic structure.
摘要:
The invention relates to opaque, colored glass-ceramic articles and to the production of opaque, colored glass-ceramic articles which can be readily formed to a desired shape using standard metal-working tools. The glass-ceramic material used to make such articles contains mica crystals as the predominant phase. The desired color is obtained through the addition of a colorant system to the precursor glass. In a particular embodiment the invention is directed to a black glass-ceramic article, the black color being obtained by the addition of iron oxides in levels as high as 20 wt %, which can yield a glass-ceramic having an iron-rice mica phase and/or a glass ceramic having an iron-rich mica phase plus an iron oxide phase.
摘要:
The invention relates to opaque, colored glass-ceramic articles and to the production of opaque, colored glass-ceramic articles which can be readily formed to a desired shape using standard metal-working tools. The glass-ceramic material used to make such articles contains mica crystals as the predominant phase. The desired color is obtained through the addition of a colorant system to the precursor glass. In a particular embodiment the invention is directed to a black glass-ceramic article, the black color being obtained by the addition of iron oxides in levels as high as 20 wt %, which can yield a glass-ceramic having an iron-rice mica phase and/or a glass ceramic having an iron-rich mica phase plus an iron oxide phase.
摘要:
The present disclosure relates to fusion formable highly crystalline glass-ceramic articles whose composition lies within the SiO2—R2O3—Li2O/Na2O—TiO2 system and which contain a silicate crystalline phase comprised of lithium aluminosilicate (β-spodumene and/or β-quartz solid solution) lithium metasilicate and/or lithium disilicate. Additionally, these silicate-crystal containing glass-ceramics can exhibit varying Na2O to Li2O molar ratio extending from the surface to the bulk of the glass article, particularly a decreasing Li2O concentration and an increasing Na2O concentration from surface to bulk. According to a second embodiment, disclosed herein is a method for forming a silicate crystalline phase-containing glass ceramic.
摘要翻译:本发明涉及组合物位于SiO 2 -R 2 O 3 -Li 2 O / Na 2 O-TiO 2体系内并且包含由硅铝酸锂(&bgr。 - 锂辉石和/或其组合物)组成的硅酸盐结晶相的可熔融成形高结晶玻璃 - 陶瓷制品, 石英固溶体)偏硅酸锂和/或二硅酸锂。 此外,这些含硅酸盐晶体的玻璃陶瓷可以表现出从玻璃制品的表面延伸到本体的Na 2 O与Li 2 O的摩尔比变化,特别是从表面到体积的降低的Li 2 O浓度和增加的Na 2 O浓度。 根据第二实施方案,本文公开了一种形成含硅酸盐结晶相的玻璃陶瓷的方法。
摘要:
The invention is directed to a honeycomb comprising cordierite and beta-spudomene, the honeycomb a having total porosity of greater than 30% and a mean pore diameter of less than 5 μm. The honeycomb is made from a mixture of activated kaolin and a mineral selected from the group consisting of lithium fluorhectorite, lithium hydroxyhectorite and mixtures thereof. In one embodiment up to 20 wt % SiO2, based on the total weight of the kaolin and minerals (fluarhectorite, hydroxyhectorite) is added and mixed therein prior to the formation of the green body. In another embodiment the amount of added SiO2 is up to 10 wt %. In one embodiment the total porosity is greater than 50% and the mean pore diameter is less than 5 μm.
摘要:
The disclosure is directed to a transparent armor laminate having a glass, glass-ceramic or ceramic strike face layer, one or a plurality of glass, glass-ceramic (“GC”), ceramic (“C”) or polymeric (“P”) backing layer behind the strike face layer, one or a plurality of spall catcher (“SC”) layers behind the backing layer(s), and a thin cover glass layer laminated to the strike face, the thin layer being the first layer to be impacted by any incoming projectile or debris. The cover glass has a thickness ≦3 mm. In another embodiment the cover glass thickness is ≦1 mm. Additionally, a defrosting/defogging element is laminated between the cover glass and the strike face.
摘要:
The invention is directed to a honeycomb comprising cordierite and β-spudomene, the honeycomb having a having total porosity of greater than 30% and a mean pore diameter of less than 5 μm. The honeycomb is made from a mixture of activated kaolin and a mineral selected from the group consisting of lithium fluorhectorite, lithium hydroxyhectorite and mixtures thereof. In one embodiment up to 20 wt % weight SiO2, based on the total weight of the kaolin and minerals (fluorhectorite, hydroxyhectorite) is added and mixed therein prior to the formation of the green body. In another embodiment the amount of added SiO2 is up to 10 wt %. In one embodiment the total porosity is greater than 50% and the mean pore diameter is less than 5 μm.