Composite materials are provided which include a glass-ceramic matrix composition that is lightly crystallized, a fiber reinforcement within the glass-ceramic matrix composition which remains stable at temperatures greater than 1400 C., and an interphase coating formed on the fiber reinforcement. A method of making a composite material is also provided, which includes applying heat and pressure to a shape including fiber reinforcements and glass particles. The heat and pressure lightly crystallize a matrix material formed by the heat and pressure on the glass particles, forming a thermally stable composite material.

A method includes impregnating a region of a glass sheet with a filler material in a liquid state. The glass sheet includes a plurality of glass soot particles. The filler material is solidified subsequent to the impregnating step to form a glass/filler composite region of the glass sheet.

The present invention relates to a divalent manganese-doped all-inorganic perovskite quantum dot glass, and constituents of the divalent manganese-doped all-inorganic perovskite quantum dot glass are as follows: B.sub.2O.sub.3: 25%-45%, SiO.sub.2: 25%-45%, MCO.sub.3: 1%-10%, Al.sub.2O.sub.3: 1%-10%, ZnO: 1%-5%, Cs.sub.2CO.sub.3: 1%-10%, PbCl.sub.2: 1%-10%, NaCl: 1%-10%, MnCl.sub.2: 1%-10%, wherein M is Ca, Sr or Ba. Preparation of the quantum dot glass is as follows: grinding each raw constituent materials and mixing well to form a mixture, melting the mixture, followed by molding, annealing and performing thermal treatment. By the thermal treatment at different temperatures, a divalent manganese-doped quantum dot glass can be obtained. The divalent manganese ions doped perovskite quantum dot glass is a kind of light-emitting material with great application prospect, for possessing good stability and rather high fluorescence quantum yield.

A glass composition, a macrocomposite, and methods of forming the macrocomposite including dispersing or immersing a metal in a glass. Preferably, the macrocomposite does not include an organic resin, an adhesive, or a polymer.

An optical nanocomposite containing optically active crystals (rare earth or transition metal doped) in a suitably index-, dispersion-, thermo-optically matched matrix enables creation of a glass ceramic with unique optical properties. By further tuning the viscosity of the composite, it can be drawn into fiber form, dissolved into solution and subsequently deposited as a thin film, or used as a bulk optical component. Critical to achieving a viable material is closely matching the attributes needed to not only achieve optical function but to enable fabrication under elevated temperatures (i.e., during fiber drawing) or in unique chemical or thermal environments, such as during deposition as a thin film. This invention uses nanosized crystalline powders (nanocrystalsNC), blended with multicomponent chalcogenide glass (ChG) to form an optical nanocomposite. The blended NC:glass integrates compositional tailoring to enable matching of optical properties (index, dispersion, dn/dT), specialized dispersion methods to ensure homogeneous physical dispersion of NCs within the glass matrix during preparation, while minimizing agglomeration and mismatch of coefficient of thermal expansion. The latter attributes are critical to maintaining low loss (optical scatter) and induced stress birefringence due to mismatch between the NC and glass' parent properties. By tailoring the base glass composition's viscosity versus temperature profile, the resulting bulk nanocomposite can be further formed to create an optical fiber, while maintaining physical dispersion on NCs, avoiding segregation of the NCs. This enables low loss conditions suitable for lasing within the material.

A method includes impregnating a region of a glass sheet with a filler material in a liquid state. The glass sheet includes a plurality of glass soot particles. The filler material is solidified subsequent to the impregnating step to form a glass/filler composite region of the glass sheet.

An apparatus for making a composite article includes a monofilament feed track adapted to carry a spaced array of ceramic monofilament strands, a fiber yarn feed track adapted to carry a spaced array of fiber yarn tows impregnated with a plurality of glass particulates, a mandrel, and a heater assembly. The mandrel is adapted to wind together individual glass-impregnated fiber yarn strands and individual ceramic monofilament strands to form a dual-fiber weave. The heater assembly is adapted to heat at least the glass particulates such that pressure from the wound array of ceramic monofilaments is sufficient to consolidate the glass particulates and the dual-fiber weave into a dual-fiber ceramic matrix composite (CMC).

Provided is a ceramic complex having high luminous characteristics. Proposed is a ceramic complex including a rare earth aluminate fluorescent material, glass, and calcium fluoride, wherein, when the total amount of the rare earth aluminate fluorescent material, the glass, and the calcium fluoride is taken as 100% by volume, the content of the rare earth aluminate fluorescent material is in a range of 15% by volume or more and 60% by volume or less, the content of the glass is in a range of 3% by volume or more and 84% by volume or less, and the content of the calcium fluoride is in a range of 1% by volume or more and 60% by volume of less.

A glass powder of the present invention is a glass powder, which is formed of alkali borosilicate glass, wherein the glass powder includes 0.1 mol % to 1.0 mol %, provided that 1.0 mol % is excluded, of Li.sub.2O+Na.sub.2O+K.sub.2O in a glass composition, has a molar ratio Li.sub.2O/(Li.sub.2O+Na.sub.2O+K.sub.2O) of from 0.35 to 0.65, a molar ratio Na.sub.2O/(Li.sub.2O+Na.sub.2O+K.sub.2O) of from 0.25 to 0.55, and a molar ratio K.sub.2O/(Li.sub.2O+Na.sub.2O+K.sub.2O) of from 0.025 to 0.20, and has a specific dielectric constant at 25? C. and 16 GHz of from 3.5 to 4.0 and a dielectric dissipation factor at 25? C. and 16 GHz of 0.0020 or less.

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.