An article includes a glass ceramic that has an amorphous silicate glass phase and a crystalline phase including a species of MxWO3 with 0<x<1 and M an intercalated dopant cation. The article further includes an aperture configured to be formed via local heating of a portion of the glass ceramic to a temperature that is above the softening point of the glass ceramic. The aperture comprises constituents of the silicate glass phase and the crystalline phase but is substantially free of the species of MxWO3. A ratio of a transmittance of the aperture to a transmittance of the glass ceramic not subject to the local heating is at least 6,000 with transmittance measured in %/mm at wavelengths from 500 nm to 1100 nm.

A glass ceramic includes feldspar crystal phases, non-crystalline glass phases, Al.sub.2O.sub.3 phases, and SiO.sub.2 phases. At least one pair of the Al.sub.2O.sub.3 phases is bonded via at least one of the feldspar crystal phases.

The glass for covering a semiconductor element contains: in mol %, as a glass composition, SiO.sub.2: 20% to 36%, ZnO: 8% to 40%, B.sub.2O.sub.3: 10% to 24%, Al.sub.2O.sub.3: 10% to 20%, and MgO+CaO: 8% to 22%, in which SiO.sub.2/ZnO is 0.6 or more and less than 3.3 in terms of a molar ratio, and a lead component is substantially not contained.

Methods for engineered mesoporous cellular magmatics and articles thereof are disclosed. For example, the magmatics may include a mixture of substance that, when exposed to heat for a length of time, form a foamed mass. The foamed mass may be exposed to a solution configured to cause mineralization upon and within the articles.

A method of fabricating a ceramic component includes hot pressing a composite component with a glass powder / filler cover mixture to form a consolidated glass-based coating on the composite component.

A magnetizable glass ceramic composition including: a continuous first glass phase including SiO.sub.2, B.sub.2O.sub.3, P.sub.2O.sub.5, and R.sub.2O; a discontinuous second glass phase including at least one of SiO.sub.2, B.sub.2O.sub.3, P.sub.2O.sub.5, R.sub.2O, or mixtures thereof; and a discrete magnetizable crystalline phase dispersed in the discontinuous second glass phase, where R.sub.2O is selected from at least one of K.sub.2O, Li.sub.2O, Na.sub.2O, or mixtures thereof. Also disclosed are a method of making and a method of using the magnetizable glass ceramic composition.

A glass-ceramic-ferrite composition containing a glass, a ferrite, and a ceramic filler, in which the glass contains, by weight, about 0.5% to about 5.0% R.sub.2O (R represents at least one selected from the group consisting of Li, Na, and K), about 5.0% or less Al.sub.2O.sub.3, about 10.0% to about 25.0% B.sub.2O.sub.3, and about 70.0% to 85.0% SiO.sub.2 with respect to the total weight of the glass, the percentage by weight of the ferrite is about 10% to 80% with respect to the total weight of the composition, the ceramic filler contains at least forsterite selected from forsterite and quartz, the percentage by weight of the forsterite is about 1% to about 10% with respect to the total weight of the composition, and the percentage by weight of the quartz is about 40% or less with respect to the total weight of the composition.

ZrO.sub.2-toughened glass ceramics having high molar fractions of tetragonal ZrO.sub.2 and fracture toughness value of greater than 1.8 MPa.Math.m.sup.1/2. The glass ceramic may also include also contain other secondary phases, including lithium silicates, that may be beneficial for toughening or for strengthening through an ion exchange process. Additional second phases may also decrease the coefficient of thermal expansion of the glass ceramic. A method of making such glass ceramics is also provided.

The present invention relates to a glass composition. The present invention also relates to a method of forming a glass composition. The present invention also relates to uses of a glass composition.

The present invention relates to a glass-ceramic material. The present invention also relates to a method of forming a glass-ceramic material. The present invention also relates to uses of a glass-ceramic material.