Process for treating a porous dental zirconia block with a coloring solution, the process comprising the steps of providing a porous dental zirconia block having two opposing surfaces, surface U and surface L, treating the upper surface U of the porous dental zirconia block with a coloring solution A.sub.1, wherein the coloring solution is provided with a volume VA.sub.1, turning the porous dental zirconia block around, treating the lower surface L with a coloring solution A.sub.2 which is provided with a volume VA.sub.2. wherein the coloring solutions A.sub.1 and A.sub.2 comprise a solvent and coloring ions, wherein the volume of at least one of the coloring solutions A.sub.1 or A.sub.2 is applied in portions, wherein the following condition is met: Vo=ΣV.sub.AX, with x≥2, with Vo being the overall amount of coloring solution used to infiltrate the porous dental zirconia block.

Process for treating a porous dental zirconia block with a coloring solution, the process comprising the steps of providing a porous dental zirconia block having two opposing surfaces, surface U and surface L, treating the upper surface U of the porous dental zirconia block with a coloring solution A.sub.1, wherein the coloring solution is provided with a volume VA.sub.1, turning the porous dental zirconia block around, treating the lower surface L with a coloring solution A.sub.2 which is provided with a volume VA.sub.2. wherein the coloring solutions A.sub.1 and A.sub.2 comprise a solvent and coloring ions, wherein the volume of at least one of the coloring solutions A.sub.1 or A.sub.2 is applied in portions, wherein the following condition is met: Vo=ΣV.sub.AX, with x≥2, with Vo being the overall amount of coloring solution used to infiltrate the porous dental zirconia block.

The disclosure provides a ceiling tile including a curable coating composition including 10-50 vol. % inorganic binder, based on the total volume of solids in the dry coating composition, wherein the inorganic binder is an alkali metal silicate or an alkaline earth metal silicate and 50-90 vol. % inorganic filler, based on the total volume of solids in the coating composition, wherein the binder and the filler are not the same and the coating is substantially free of an organic polymeric binder. The ceiling tiles have a backing side and an opposing facing side, and a cured coating layer disposed on the backing side of the panel, the backing side being directed to a plenum above the fibrous panel in a suspended ceiling tile, the cured coating layer including the curable coating composition of the disclosure.

The disclosure provides a ceiling tile including a curable coating composition including 10-50 vol. % inorganic binder, based on the total volume of solids in the dry coating composition, wherein the inorganic binder is an alkali metal silicate or an alkaline earth metal silicate and 50-90 vol. % inorganic filler, based on the total volume of solids in the coating composition, wherein the binder and the filler are not the same and the coating is substantially free of an organic polymeric binder. The ceiling tiles have a backing side and an opposing facing side, and a cured coating layer disposed on the backing side of the panel, the backing side being directed to a plenum above the fibrous panel in a suspended ceiling tile, the cured coating layer including the curable coating composition of the disclosure.

The present invention relates to a method for additive manufacturing of a position sensitive colored ceramic article comprising: a) providing at least one flowable ceramic component; b) forming a green body by sequential deposition of the ceramic component provided in step a) and optionally a support material not intended to be part of the final article; c) position sensitive application of a coloring substance in a solvent to at least a part of the surface of the green body formed in step b), wherein the coloring substance is applied simultaneously to the sequential deposition; d) heat treatment or curing of at least a part of the green body surface obtained in step c); wherein the method steps a)-d) are at least performed once; e) optionally removing the support material from the green body; and f) sintering the green body to obtain the ceramic article; wherein the coloring substance is a dyestuff according to ISO 18451-1:2019(E). In addition, the present invention relates to a system adapted to perform the method and a control data set configured, when implemented in an additive manufacturing system, to cause the system to execute the steps of the inventive method.

To provide a liquid material which can only adjust transparency by applying on a part of a zirconia crown having high transparency, without coloring. The present disclosure provides an opaque imparting liquid used for a prosthesis device cut and machined from a dental zirconia for cutting and machining, comprising; (a) 10 to 39 wt. % of a water-soluble aluminum compound and/or a water-soluble lanthanum compound, (b) 60 to 89 wt. % of water, and (c) 1 to 20 wt. % of an organic solvent.

To provide a liquid material which can only adjust transparency by applying on a part of a zirconia crown having high transparency, without coloring. The present disclosure provides an opaque imparting liquid used for a prosthesis device cut and machined from a dental zirconia for cutting and machining, comprising; (a) 10 to 39 wt. % of a water-soluble aluminum compound and/or a water-soluble lanthanum compound, (b) 60 to 89 wt. % of water, and (c) 1 to 20 wt. % of an organic solvent.

A method for post-processing a colored zirconium oxide ceramic, the method comprising: putting the colored zirconium oxide ceramic along with a deoxidant into a heating device, conducting a firing process at a preset temperature, and a colorant containing Pr.sup.3+ is used for the coloring, and the deoxidant is excessive with respect to a stoichiometric amount of oxygen in the heating device. The technical solution can completely replace Pe.sup.3+ with Pr.sup.3+ to color the zirconium oxide ceramic yellow.

A method for post-processing a colored zirconium oxide ceramic, the method comprising: putting the colored zirconium oxide ceramic along with a deoxidant into a heating device, conducting a firing process at a preset temperature, and a colorant containing Pr.sup.3+ is used for the coloring, and the deoxidant is excessive with respect to a stoichiometric amount of oxygen in the heating device. The technical solution can completely replace Pe.sup.3+ with Pr.sup.3+ to color the zirconium oxide ceramic yellow.

The present disclosure provides a method for coating a composite structure, comprising forming a first slurry by combining a first pre-slurry composition with a first carrier fluid, applying the first slurry on a surface of the composite structure, and heating the composite structure to a temperature sufficient to form a base layer on the composite structure. The first pre-slurry composition may comprise a first phosphate glass composition and a low coefficient of thermal expansion material, wherein the low coefficient of thermal expansion material is a material with a coefficient of thermal expansion of less than 10×10.sup.−6° C..sup.−1.