Acid-resisting complex phase ceramic coating and preparation method thereof

A technology for composite ceramics and ceramic coatings, applied in the field of acid-resistant composite ceramic coatings and their preparation

Inactive Publication Date: 2012-09-05
NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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  • Acid-resisting complex phase ceramic coating and preparation method thereof

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example 1

[0016] Firstly, 2wt% adhesive and 2wt% dispersant are used to make a concentrated solution, and then 25.4wt% water is added to make a premixed solution. Mix 25wt% aluminum oxide, 10wt% silicon dioxide, and 35wt% silicon carbide micropowder (200 mesh sieve 2 o 3 / SiO 2 / SiC acid-resistant composite ceramic coating.

example 2

[0018] Firstly, 3wt% adhesive and 3wt% dispersant are used to make a concentrated solution, and then 26.3wt% water is added to make a premixed solution. Mix 22wt% aluminum oxide, 12wt% silicon dioxide, and 33wt% silicon carbide micropowder (200 mesh sieve 2 o 3 / SiO 2 / SiC acid-resistant composite ceramic coating.

example 3

[0020] Firstly, 5wt% adhesive and 3wt% dispersant are used to make a concentrated solution, and then 27.5wt% water is added to make a premixed solution. Mix 23wt% aluminum oxide, 11wt% silicon dioxide, and 30wt% silicon carbide micropowder (200 mesh sieve 2 o 3 / SiO 2 / SiC acid-resistant composite ceramic coating.

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Abstract

The invention belongs to an acid-resisting complex phase ceramic coating and a preparation method thereof. Firstly, 2-5 wt% of adhesive and 2-4 wt% of dispersing agent are prepared into concentrated solution, and then 25-30 wt% of water is added to prepare premixing solution; alumina, silica and silicon carbide micro powder are mixed at ratio and are added into premixing solution and the mixture is carried out ball milling for 2 hours; 0.5-1 wt% of catalyst is added for ball milling for 0.5 hour; after slurry viscosity is suitable, the slurry is brushed or sprayed by a spray gun on the surface of materials, such as cement, concrete and the like to form an even coating; and after heat treatment, Al2O3 / SO2 / SiC series anti-reversion complex phase ceramic coating is obtained. The complex phase ceramic coating not only can be applied on the surface of cement, concrete and the like, but also can be used for the anti-corrosion of metal surface. The coating surface is even and compact, has nocracks and has favorable abrasion performance and favorable acid resistant erosiveness.

Description

technical field [0001] The invention relates to an acid-resistant multiphase ceramic coating and a preparation method thereof, belonging to the field of inorganic non-metallic materials. Background technique [0002] my country is a big coal storage country, and coal is the main energy consumed. Especially after joining the WTO, my country's industrial production scale has continued to expand, and industries such as electric power, steel, and cement have continued to rise, causing my country's coal consumption to increase day by day. In 2007, the total coal consumption reached 1,191.53 million tons, ranking first in the world. It is nearly twice the 567.26 million tons of the United States, which ranks second, and even the per capita consumption has reached 0.91 tons per person, ranking 15th in the world. One of the biggest problems with burning coal is sulfur corrosion. Standard coal contains about 1wt% sulfur, which mainly exists in four forms: pyrite, organic sulfur, sul...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B41/85
Inventor 沈毅沈巍李锋锋张明熹李红生李大鹏
Owner NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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