Abstract:
The purpose of the present invention is to provide: a glass substrate in which it is possible to suppress changes in the quality of the glass substrate surface due to burning, etc., and to maintain optical characteristics; and an optical component in which the glass substrate is used. The present invention pertains to a glass substrate containing as a reaction factor component at least one selected from the group consisting of Li, Na, K, Mg, Ca, Sr, Ba, and Zn, the glass substrate having a surface depletion layer in which the total molar concentration (mol/cm 3 ) of the reaction factor component is decreased relative to the interior on the surface side of the glass substrate, having a total depletion amount (mol/cm 2 ) of the reaction factor component of 1.00 x 10 -8 or higher in the surface depletion layer, and having a refractive index (nd) of 1.68 or higher.
Abstract:
The shaped composites of the present disclosure have metal powder bonded with glass powder. This feature provides the advantages of metal, metal powder, or glass composite materials, without suffering from the disadvantages. The composite is prepared with simple sintering methods, and can easily be formed into any number of desired shapes with dimensional characteristics and ingredients suited to a particular application.
Abstract:
A display device (10) having a display element (20), such as a light - emitting device or a light -reflecting device, such as a MEMS device, and a glass touch panel (30) covering the display element, the outer surface (50) of the panel being textured. The panel is thin, having a thickness of 1.1 mm or less between the inner (40) and outer (50) surfaces.
Abstract:
A bonded abrasive article is provided which includes abrasive grains made of cubic boron nitride within a bond matrix including a silicate. The bonded abrasive further includes a reaction product at the interface between the abrasive grains and bond matrix comprising a transition metal nitride. Further, the invention relates to a manufacturing method comprising providing a glass powder comprising a transition metal oxide compound; combining the glass powder with abrasive grains comprising cubic boron nitride; forming the glass powder and abrasive grains to form a green article; and sintering the green article at a transformation temperature to form abrasive grains in a vitreous bond matrix, the transformation temperature changing the transition metal oxide compound to a transition metal nitride compound at the interface of the abrasive grams and the vitreous bond matrix.
Abstract:
A process for preparing particulate, bioactive and resorbable biosilicates from vitreous plates or frits is described, which comprises thermally treating the vitreous plates or frits in a single or in two thermal treatment steps, at controlled temperatures and times, and then milling the crystallized glass to obtain crystallized bioactive or resorbable biosilicate powders of desired bioactivity, free from sharp, cutting edges, that in contact with body fluids produce a teeth-restoring hydroxycarbonate apatite layer or can be gradually replaced by dental tissue and resorbed. Alternatively, a vitreous powder is first obtained, which is then thermally treated to yield the crystalline, bioactive or resorbable powder, which is free from sharp cutting edges. For different process conditions, different crystalline phases are obtained so that it is possible to obtain a range of bioactive or resorbable silicates that may be used as such or combined in the treatment of different oral ailments such as dentine hypersensitivity, dental fissures and xerostomy. The biosilicate particle size distribution is between 0.1 and 30 microns.