Embodiments of disclosure may provide a method for forming an aluminum-containing nitride ceramic matrix composite, comprising heating a green body, an aluminum-containing composition, ammonia and a mineralizer composition in a sealable container to a temperature between about 400 degrees Celsius and about 800 degrees Celsius and a pressure between about 10 MPa and about 1000 MPa, to form an aluminum-containing nitride ceramic matrix composite characterized by a phosphor-to-aluminum nitride (AlN) ratio, by volume, between about 1% and about 99%, by a porosity between about 1% and about 50%, and by a thermal conductivity between about 1 watt per meter-Kelvin and about 320 watts per meter-Kelvin. The green body comprises a phosphor powder comprising at least one phosphor composition, wherein the phosphor powder particles are characterized by a D50 diameter between about 100 nanometers and about 500 micrometers, and the green body has a porosity between about 10% and about 80%. The aluminum-containing composition has a purity, on a metals basis, between about 90% and about 99.9999%. The fraction of free volume within the sealable container contains between about 10% and about 95% of liquid ammonia prior to heating the green body, the aluminum-containing composition, ammonia and the mineralizer composition in the sealable container.

Solar reflective polymer-based granules are disclosed. Each of the solar reflective polymer-based granules includes a powder mixture including at least one functional pigment and a functional mineral filler and a polymer carrier extruded with the powder mixture. The at least one functional pigment is selected from the group consisting of an inorganic pigment, a white pigment, an infrared reflective pigment, and mixtures thereof. In various embodiments, the functional mineral filler is present in the polymer-based granules in an amount of from about 5 wt. % to about 80 wt. %, based on a total weight of the polymer-based granules. The resultant polymer-based granules have a solar reflectivity of greater than or equal to 8% when measured using a solar reflectometer.

In some examples, a coating may include at least one feature that facilitates visual determination of a thickness of the coating. For example, the coating may include a plurality of microspheres disposed at a predetermined depth of the coating. The plurality of microspheres may define a distinct visual characteristic. By inspecting the coating and viewing at least one of the microspheres, the thickness of the coating may be estimated. In some examples, the plurality of microspheres may be embedded in a matrix material, and the distinct visual characteristic of the microspheres may be different than the visual characteristic of the matrix material. In other examples, the at least one feature may include at least one distinct layer in the coating system that includes a distinct visual characteristic, such as a color of the distinct layer.

The disclosure discloses a composite fluorescent ceramic, a preparation method of the composite fluorescent ceramic and a light emitting device related to the technical field of optical components. The device includes a luminescent phase, a matrix phase and pores, the luminescent phase includes multiple luminescent crystal grains bonded together, the matrix phase includes multiple matrix crystal grains bonded together, the matrix phase and the luminescent phase are interspersed with each other and distributed in a composite fluorescent ceramic, at least part of pores are distributed in the luminescent phase, at least part of pores are distributed in the matrix phase, and at least part of pores are distributed between the luminescent phase and a Al.sub.2O.sub.3 matrix phase. The composite fluorescent ceramic may have high scattering performance.

A method of making an identifiable gypsum-based building product, includes incorporating a suitable amount of an optically identifiable marker into the product to be sensed by a conventional detecting device; applying the product with the marker in a conventional manner in the course of building construction, creating a finished building product; and analyzing the finished building product and optically detecting the presence of the marker in real time onsite.

The various embodiments herein provide a light emitting concrete composition and a method of synthesizing a light emitting concrete structure. The light emitting concrete composition comprises light-emitting pigments. The light emitting pigments include a metallic powder, a sulphur powder and a plurality of resins, cement, sand, gravel and water. The method of synthesizing a light emitting concrete structure comprises preparing a slurry. The slurry is prepared by mixing sand, gravel, cement and water. Further, a light-emitting pigment mixture is prepared. The light emitting pigment mixture is prepared by mixing a metallic powder, a plurality of resins and a sulphur powder. The light-emitting pigment mixture is added to the slurry. The slurry is moulded by adding the slurry in moulds. The moulds are further kept at a temperature of 15-20 C. for at least 12-15 minutes. The slurry is cured at a temperature of less than 30 C. for 24 hours.

In some examples, a coating may include at least one feature that facilitates visual determination of a thickness of the coating. For example, the coating may include a plurality of microspheres disposed at a predetermined depth of the coating. The plurality of microspheres may define a distinct visual characteristic. By inspecting the coating and viewing at least one of the microspheres, the thickness of the coating may be estimated. In some examples, the plurality of microspheres may be embedded in a matrix material, and the distinct visual characteristic of the microspheres may be different than the visual characteristic of the matrix material. In other examples, the at least one feature may include at least one distinct layer in the coating system that includes a distinct visual characteristic, such as a color of the distinct layer.

A light-emitting concrete composition comprising a cement, such as Portland cement, coarse aggregates, fine aggregates, zinc sulfide, and water. A product, such as an architectural feature, comprising the light-emitting concrete and methods for formulating and mixing it as well as a dry mix suitable to which water can be added to produce the light-emitting concrete. Light-emitting concrete traps solar energy during the daytime and converts it into visible light at night. The light-emitting concrete disclosed herein emits soft light night without any electricity and contributes to energy conservation and low-carbon eco-friendly environment.

The viscous building material with phosphorescence is a chemical compound. The viscous building material with phosphorescence is formed as a viscous colloid. The viscous building material with phosphorescence is applied as a viscous fluid between two objects. The viscous building material with phosphorescence performs a structural function selected from the group consisting of: a) forming a fluid impermeable seal between the two objects; and, b) forming an adhesive seal that holds the two objects in a fixed position relative to each other. The viscous building material with phosphorescence illuminates in the dark to form a beacon. The viscous building material with phosphorescence incorporates a structural compound and a phosphorescent compound. The structural compound and the phosphorescent compound are mixed to form the viscous colloid of the viscous building material with phosphorescence.

A method for manufacturing an item (1) comprising a through-decoration (2) forming a so-called backlit plique--jour enamel, the method including obtaining a blank (5); removing part of the blank (5) from the inner face (5b) of the blank (5) to produce a decoration (2a) that does not pass through to the outer face (5a); depositing, from the inner face (5b), one or more layers of enamel (3) within the non-through decoration (2a); depositing, from the inner face (5b), a layer of luminescent material (4) on the enamel (3); depositing a protective layer (6) on the layer of luminescent material (4); and machining the outer face (5a) to reveal the enamel. Also, the related item.