公开(公告)号：US20230100027A1

公开(公告)日：2023-03-30

申请号：US17895166

申请日：2022-08-25

Applicant: SCHOTT AG

Inventor： Hüseyin Özcoban ,  Evelin Weiss ,  Susanne Krüger ,  Uwe Martens ,  Friedrich Siebers ,  Thoralf Johansson

IPC: C03C10/00 ,  C03C4/02 ,  C03B32/02

Abstract: A lithium aluminum silicate glass ceramic, which, apart from unavoidable impurities, is As2O3-free and Sb2O3-free. The lithium aluminum silicate glass ceramic has keatite as primary crystal phase and a keatite peak temperature TP of the keatite solid solution formation in the range of 980° C. to 1090° C., and the keatite peak temperature TP is determined by dynamic differential calorimetry (DSC) in accordance with DIN 51007:2019-04 at a heating rate of 5 K/min. A ceramization method is also described.

公开(公告)号：US10106456B2

公开(公告)日：2018-10-23

申请号：US15049261

申请日：2016-02-22

Applicant: SCHOTT AG

Inventor： Falk Gabel ,  Evelin Weiss ,  Michael Bug ,  Friedrich Siebers ,  Thoralf Johansson

IPC: C03C3/097 ,  C03C10/12 ,  C03C10/00

Abstract: An LAS-glass for producing a transparent glass-ceramic and an LAS-glass-ceramic having a predetermined chroma C* and a predetermined visually determinable scatter value (S) are provided. The LAS-glass and LAS-glass-ceramic has a process window as large as possible during the nucleus formation process with respect to the residence time in the relevant temperature range for the formation of nuclei.

公开(公告)号：US20150285707A1

公开(公告)日：2015-10-08

申请号：US14437229

申请日：2013-10-24

Applicant: SCHOTT AG

Inventor： Ralf Jedamzik ,  Clemens Kunisch ,  Thoralf Johansson

IPC: G01M11/00 ,  G01N25/02 ,  G01N19/00 ,  G02B5/08 ,  G02B1/00

CPC classification number: G01M11/005 ,  G01N19/00 ,  G01N25/02 ,  G01N33/386 ,  G02B1/00 ,  G02B5/08

Abstract: The invention generally relates to manufacturing or providing of glass or glass ceramic products. The invention is based on the object to allow for providing glass or glass ceramic products having very accurately characterized thermo-mechanical properties. For this purpose, a deformation of the glass or glass ceramic material is measured at least twice as a function of time with different rates of change in temperature or a mechanical stress. Based on the measurements, relaxation times and weighting factors are determined by modelling. Then, based on the relaxation times and weighting factors related to the distribution of relaxation processes occurring in the product, a time-delayed change of a temperature-dependent or stress-dependent physical quantity, such as thermal expansion or refractive index, is calculated as a function of a predefined temperature change or stress change. The invention is used for selecting during manufacturing suitable glass products exhibiting selected time-delayed properties.

Abstract translation: 本发明一般涉及制造或提供玻璃或玻璃陶瓷产品。 本发明基于允许提供具有非常精确地表征的热机械性能的玻璃或玻璃陶瓷产品的目的。 为此目的，玻璃或玻璃陶瓷材料的变形，以不同的温度变化率或机械应力作为时间的函数至少测量两次。 基于测量，松弛时间和加权因子通过建模确定。 然后，基于与产品中发生的松弛过程的分布相关的松弛时间和加权因子，将温度依赖性或应力依赖物理量（例如热膨胀或折射率）的时间延迟变化计算为 预定温度变化或应力变化的功能。 本发明用于在制造具有选定的时间延迟性质的合适的玻璃制品时进行选择。

公开(公告)号：US09862633B2

公开(公告)日：2018-01-09

申请号：US14982502

申请日：2015-12-29

Applicant: Schott AG

Inventor： Falk Gabel ,  Otmar Becker ,  Michael Glasenapp ,  Jan-Peter Ortmann ,  Petra Grewer ,  Veit Luther ,  Harald Striegler ,  Dietmar Wennemann ,  Thomas Schuler ,  Thoralf Johansson ,  Helga Goetz ,  Michael Bug ,  Guenther Siebenhaar ,  Gerhard Hahn ,  Friedrich-Georg Schroeder

IPC: C03B32/02 ,  C03C10/00

CPC classification number: C03B32/02 ,  C03C10/0027 ,  C03C10/0036 ,  Y02P40/57 ,  Y10T428/315

Abstract: A lithium-containing, transparent glass-ceramic material is provided. The material has low thermal expansion and has an amorphous, lithium-depleted, vitreous surface zone. The zone is at least 50 nm thick on all sides and encloses a crystalline interior, which has high transmission. The material includes a transition region connecting the zone and the interior.

公开(公告)号：US10012562B2

公开(公告)日：2018-07-03

申请号：US14437229

申请日：2013-10-24

Applicant: SCHOTT AG

Inventor： Ralf Jedamzik ,  Clemens Kunisch ,  Thoralf Johansson

IPC: G01N25/00 ,  G01N3/00 ,  G01K3/00 ,  G01M11/00 ,  G01N25/02 ,  G01N33/38 ,  G01N19/00 ,  G02B1/00 ,  G02B5/08

CPC classification number: G01M11/005 ,  G01N19/00 ,  G01N25/02 ,  G01N33/386 ,  G02B1/00 ,  G02B5/08

Abstract: The invention generally relates to manufacturing or providing of glass or glass ceramic products. The invention is based on the object to allow for providing glass or glass ceramic products having very accurately characterized thermo-mechanical properties. For this purpose, a deformation of the glass or glass ceramic material is measured at least twice as a function of time with different rates of change in temperature or a mechanical stress. Based on the measurements, relaxation times and weighting factors are determined by modelling. Then, based on the relaxation times and weighting factors related to the distribution of relaxation processes occurring in the product, a time-delayed change of a temperature-dependent or stress-dependent physical quantity, such as thermal expansion or refractive index, is calculated as a function of a predefined temperature change or stress change. The invention is used for selecting during manufacturing suitable glass products exhibiting selected time-delayed properties.