Ceramic surface material and surface coating

Abstract

The invention provides a ceramic surface material. The ceramic surface material comprises 20.0-70.0 wt% of organosilicon, 20.0-70.0 wt% of an organic solvent, 1.0-50 wt% of a filler and 0.1-3.0 wt% ofan assistant, wherein the organic solvent is one or more selected from butyl acetate, xylene, n-butyl ether, diethylene glycol butylether acetate, methylcyclohexane, n-octane and butyl titanate; andthe filler is composed of graphene, graphite, transition metal oxide, composite silicate, rare earth oxide, nonmetal, a nonmetallic compound and metal. Components in the ceramic surface material havesynergistic effects, so the ceramic surface material has good comprehensive performances as a coating layer.

Description

technical field [0001] The invention relates to the technical field of surface materials, in particular to ceramic surface materials and surface coatings. Background technique [0002] In the production and operation of aviation, spacecraft, power plant boilers, biomass boilers, waste incineration boilers, petrochemical heating furnaces, small and medium industrial boilers, various engines and other thermal equipment, high-temperature corrosion, erosion wear and contamination of heating surfaces Slagging, etc., have caused great hidden dangers to the safe operation of the above-mentioned equipment, and will also affect the heat exchange efficiency and heat exchange capacity of the above-mentioned equipment. High-temperature corrosion and erosion wear cause direct damage to the heating surface. Contamination and slagging on the heat exchange surface directly lead to a decrease in heat exchange capacity, an imbalance in the thermal system of thermal equipment, and a decrease i...

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Problems solved by technology

For example: Chinese patent application number 201410687121.8 discloses a high-temperature resistant and anti-contamination and slagging ceramic surface material, which includes: fillers, binders and water, wherein the fillers include zirconia, silicon nitride, silicon carbide, titanium dioxide, Kaolin and rare earth oxides, the ceramic surface material provided by this patent can withstand high temperature of 1050 ℃, but the overall performance of the surface material, especially the resistance to sulfur corrosion and chlorine corrosion in reducing atmosphere is still not very high

The Chinese patent application number 201510542509.3 discloses a high-temperature corrosion-resistant and anti-staining and slagging ceramic surface material, which includes: fillers, binders and water, wherein the fillers include graphite, boron nitride and rare earth oxides. The patent provides The ceramic surface material can withstand high temperature of 850 ℃, but the overall performance of the surface material, especially the high temperature resistance ability, still cannot meet the needs of high temperature environment, and the existing patents of silicone high temperature corrosion resistance surface materials generally have the process of organic silicon heating and pyrolysis The ceramic layer has high porosity and penetrating cracks, and the self-healing filler materials used are mostly alkali metal glasses, metal oxides, and non-metallic compounds with high melting points, so that self-healing ceramic surface materials are widely used in industrial applications. The widest temperature range (250-800°C) has low self-healing ability and cannot resist chlorine corrosion and reducing sulfur corrosion well, causing the corrosive medium to penetrate the surface material and corrode the substrate

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