The present disclosure includes carbon-carbon composite articles having oxidation protection coatings for limiting thermal and catalytic oxidation reactions and methods for applying oxidation protection coatings to carbon-carbon composite articles.

A glass lined reaction tank for chemical and pharmaceutical industries and a manufacturing method thereof. One-step molding technical standards for manufacturing iron blanks of the glass lined reaction tanks are deeply developed, an overall structure of a flanged big flange of a tank body and a tank cover matching with the tank body are innovated, and nominal pressure of the big flange and the sealing performance of a tank mouth are perfectly improved. By using a new structurally-combined precise controlled internal heating type electric furnace and an intelligent temperature program control/adjustment/recording instrument, heating temperature of an overall glass lining layer on an inner wall of the tank body is more accurately controlled to be the same, and a synchronous, integral and controlled sintering core technique is realized.

A glass lined reaction tank for chemical and pharmaceutical industries and a manufacturing method thereof. One-step molding technical standards for manufacturing iron blanks of the glass lined reaction tanks are deeply developed, an overall structure of a flanged big flange of a tank body and a tank cover matching with the tank body are innovated, and nominal pressure of the big flange and the sealing performance of a tank mouth are perfectly improved. By using a new structurally-combined precise controlled internal heating type electric furnace and an intelligent temperature program control/adjustment/recording instrument, heating temperature of an overall glass lining layer on an inner wall of the tank body is more accurately controlled to be the same, and a synchronous, integral and controlled sintering core technique is realized.

Method for producing a metal coated steel substrate provided with a coating of a primer composition, comprising applying a layer of the primer composition on the metal coated steel substrate wherein the primer composition comprises basic components selected from the group consisting of CuO, K.sub.20, Li.sub.20, Na.sub.20, Ce0.sub.2 and ZnO; components with intermediate acidity selected from the group consisting of Al.sub.20.sub.3, B.sub.20.sub.3, Cr.sub.20.sub.3, Sn0.sub.2 Sb.sub.20.sub.3 and Fe.sub.20.sub.3; acidic components selected from the group consisting of Mn0.sub.2, Mo0.sub.3, P.sub.20.sub.5, Si0.sub.2, Ti0.sub.2, V.sub.20.sub.5, W0.sub.3 and Zr0.sub.2; wherein all wt. % are drawn on the total primer composition and the total sum of the amounts excluding impurities and after normalization is 100 wt. %, wherein all components are expressed as oxides, wherein the sum of the amounts of Ce0.sub.2+Cr.sub.20.sub.3+CuO+Fe.sub.20.sub.3+Mn0.sub.2+Mo0.sub.3+Sn0.sub.2+Sb.sub.20.sub.3+V.sub.20.sub.5 W0.sub.3 is between about 16.7 and about 48.6 wt. %.

Method for producing a metal coated steel substrate provided with a coating of a primer composition, comprising applying a layer of the primer composition on the metal coated steel substrate wherein the primer composition comprises basic components selected from the group consisting of CuO, K.sub.20, Li.sub.20, Na.sub.20, Ce0.sub.2 and ZnO; components with intermediate acidity selected from the group consisting of Al.sub.20.sub.3, B.sub.20.sub.3, Cr.sub.20.sub.3, Sn0.sub.2 Sb.sub.20.sub.3 and Fe.sub.20.sub.3; acidic components selected from the group consisting of Mn0.sub.2, Mo0.sub.3, P.sub.20.sub.5, Si0.sub.2, Ti0.sub.2, V.sub.20.sub.5, W0.sub.3 and Zr0.sub.2; wherein all wt. % are drawn on the total primer composition and the total sum of the amounts excluding impurities and after normalization is 100 wt. %, wherein all components are expressed as oxides, wherein the sum of the amounts of Ce0.sub.2+Cr.sub.20.sub.3+CuO+Fe.sub.20.sub.3+Mn0.sub.2+Mo0.sub.3+Sn0.sub.2+Sb.sub.20.sub.3+V.sub.20.sub.5 W0.sub.3 is between about 16.7 and about 48.6 wt. %.

Provided is an article, particularly culinary, comprising a cast iron support having two opposite sides. The article comprises a vitreous coating in the form of at least a continuous layer of a sol-gel material comprising a matrix formed from at least a metal polyalkoxylate and at least a reactive or unreactive silicone oil, the layer of sol-gel material being deposited directly on one at least of the sides of said support, and the side provided with a vitreous coating has a surface roughness Ra ranging between 3 and 15 m with a peak count per centimeter RPc ranging between 50 and 200. A method for manufacturing such an article is also provided.

Provided is an article, particularly culinary, comprising a cast iron support having two opposite sides. The article comprises a vitreous coating in the form of at least a continuous layer of a sol-gel material comprising a matrix formed from at least a metal polyalkoxylate and at least a reactive or unreactive silicone oil, the layer of sol-gel material being deposited directly on one at least of the sides of said support, and the side provided with a vitreous coating has a surface roughness Ra ranging between 3 and 15 m with a peak count per centimeter RPc ranging between 50 and 200. A method for manufacturing such an article is also provided.

An object of the present invention is to provide a matted object capable of achieving both a lower range of glossiness and an antifouling property. A matted object includes a substrate, and a glassy layer provided on the surface of the substrate. The surface of the glassy layer has a 60-glossiness of 20 or less, a skewness Rsk of 0.5 or more, and a maximum height roughness Rz more than 2.5 m and less than 5.7 m, the skewness Rsk and the maximum height roughness Rz being specified in JIS B0601 (2001).

Disclosed are barrier coatings for fused silica components used in semiconductor processing. In particular, the present disclosure concerns protective substrate-barrier coatings composed of corrosion-resilient metal compounds which provide superior resistance to erosion/corrosion when a coated substrate is subjected to the acidic environments at elevated temperatures typical for semiconductor processing.

A metal component which has a face which during use is thermally or mechanically more highly loaded than the environment thereof and which is at least partially covered with a glaze or enamel layer and a method for the production thereof. The metal component requires no specific limitations during the thermal processing operation and nonetheless ensures optimum protection for the surfaces which are highly loaded during use. The glaze or enamel layer contains, with respect to the enamel frit used to produce the enamel coating, from 2 to 35% by weight of an admixture of particles which consist of at least one material from glass, organic plastics materials, and synthetic oxide mixtures or melts, which each have a thermal expansion coefficient of a maximum of 5010.sup.7 K.sup.1 and a melting temperature of at least 500 C.