An apparatus including a first device which moves a first portion of a soft, damp, slightly pressed slab out of alignment with a majority of the slab and thus introduces a first crack in the slab; and a device for spraying a first colored material into the first crack of the slab. The first device which moves the first portion of the slab out of alignment with the rest of the slab may include a first cylinder. The device for spraying the first colored material in the first crack of the slab may include a robotic apparatus. In at least one embodiment, the apparatus may also include a second device which moves a second portion of the slab out of alignment with the majority of the slab and thereby introduces a second crack in the slab.

An apparatus including a first device which moves a first portion of a soft, damp, slightly pressed slab out of alignment with a majority of the slab and thus introduces a first crack in the slab; and a device for spraying a first colored material into the first crack of the slab. The first device which moves the first portion of the slab out of alignment with the rest of the slab may include a first cylinder. The device for spraying the first colored material in the first crack of the slab may include a robotic apparatus. In at least one embodiment, the apparatus may also include a second device which moves a second portion of the slab out of alignment with the majority of the slab and thereby introduces a second crack in the slab.

An apparatus including a first device which moves a first portion of a soft, damp, slightly pressed slab out of alignment with a majority of the slab and thus introduces a first crack in the slab; and a device for spraying a first colored material into the first crack of the slab. The first device which moves the first portion of the slab out of alignment with the rest of the slab may include a first cylinder. The device for spraying the first colored material in the first crack of the slab may include a robotic apparatus. In at least one embodiment, the apparatus may also include a second device which moves a second portion of the slab out of alignment with the majority of the slab and thereby introduces a second crack in the slab.

The present invention relates to a heating cooker using a ceramic heating element and a manufacturing method thereof, the method comprising: a cooker body preparation step; a heating element material preparation step of preparing any one or more selected from among mill scale, steelmaking slag and magnetite (Fe.sub.3O.sub.4); an inorganic binder preparation step of preparing, as an inorganic binder, a colloidal silica sol having a colloidal silica content of 8 to 30 wt %; a mixing step of mixing 20 to 40 parts by weight of the colloidal silica sol as the inorganic binder with 100 parts by weight of the heating element material, thereby making a heating material paste; an application step of applying the heating element paste to the bottom of the cooker body; and a drying and curing step of drying and curing the heating element paste, thereby forming a solid heating element.

A coated component, along with methods of its formation and use, is provided. The coated component may include a substrate having a surface with a plurality of cavities defined therein, a bond coating (e.g., including a silicon material) on the surface of the substrate within the cavities, and an environmental barrier coating over the surface of the substrate and encasing the bond coating within the cavities such that the bond coating, when melted, is contained within the cavities. Such a coated component may be, in one embodiment, a turbine component, such as a CMC component for use in a hot gas path of a gas turbine engine.

A coated component, along with methods of its formation and use, is provided. The coated component may include a substrate having a surface with a plurality of cavities defined therein, a bond coating (e.g., including a silicon material) on the surface of the substrate within the cavities, and an environmental barrier coating over the surface of the substrate and encasing the bond coating within the cavities such that the bond coating, when melted, is contained within the cavities. Such a coated component may be, in one embodiment, a turbine component, such as a CMC component for use in a hot gas path of a gas turbine engine.

An apparatus including a device which moves a first portion of a soft, damp, and/or wet slab out of alignment with a majority of the slab and thus introduces a first crack in the slab; and a device for spraying a first colored material into the first crack of the slab. The device which moves the first portion of the slab out of alignment with the rest of the slab may include a first lift bar. The device for spraying the first colored material in the first crack of the slab may include a first spray bar having a plurality of nozzles fixed thereto, arranged in a substantially straight line. In at least one embodiment, the apparatus may also include a device which moves a second portion of the slab out of alignment with the majority of the slab and thereby introduces a second crack in the slab.

An apparatus including a device which moves a first portion of a soft, damp, and/or wet slab out of alignment with a majority of the slab and thus introduces a first crack in the slab; and a device for spraying a first colored material into the first crack of the slab. The device which moves the first portion of the slab out of alignment with the rest of the slab may include a first lift bar. The device for spraying the first colored material in the first crack of the slab may include a first spray bar having a plurality of nozzles fixed thereto, arranged in a substantially straight line. In at least one embodiment, the apparatus may also include a device which moves a second portion of the slab out of alignment with the majority of the slab and thereby introduces a second crack in the slab.

An apparatus including a device which moves a first portion of a soft, damp, and/or wet slab out of alignment with a majority of the slab and thus introduces a first crack in the slab; and a device for spraying a first colored material into the first crack of the slab. The device which moves the first portion of the slab out of alignment with the rest of the slab may include a first lift bar. The device for spraying the first colored material in the first crack of the slab may include a first spray bar having a plurality of nozzles fixed thereto, arranged in a substantially straight line. In at least one embodiment, the apparatus may also include a device which moves a second portion of the slab out of alignment with the majority of the slab and thereby introduces a second crack in the slab.

An apparatus including a device which moves a first portion of a soft, damp, and/or wet slab out of alignment with a majority of the slab and thus introduces a first crack in the slab; and a device for spraying a first colored material into the first crack of the slab. The device which moves the first portion of the slab out of alignment with the rest of the slab may include a first lift bar. The device for spraying the first colored material in the first crack of the slab may include a first spray bar having a plurality of nozzles fixed thereto, arranged in a substantially straight line. In at least one embodiment, the apparatus may also include a device which moves a second portion of the slab out of alignment with the majority of the slab and thereby introduces a second crack in the slab.