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Preparation method of carbon steel corrosion-preventing and abrasion-resisting ceramic coating

An anti-corrosion and wear-resistant ceramic coating technology, which is applied in the coating process of metal materials, etc., can solve the problems of poor bonding force, easy to fall off, large difference in thermal expansion coefficient, poor bonding force, etc., and achieve easy operation and good heat resistance , the effect of high density

Inactive Publication Date: 2016-11-16
张静
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem mainly solved by the present invention: in view of the poor bonding force between the common cermet coating and the substrate, which is easy to fall off, the compactness of the formed ceramic film is low, and the thermal expansion coefficient difference between the substrate and the coating is large, so that the prepared The shrinkage rate of the metal coating is large, the coating is easy to deform, and the defects of warping and cracking occur on the surface of the base material. It provides a kind of waste glass, natural rare earth ore and ceramic soil as raw materials, which are modified by plants and microorganisms. Finally, it is formulated into a coating slurry, coated on the surface of carbon steel and then sintered to obtain a carbon steel anti-corrosion and wear-resistant ceramic coating
The method reduces the thermal expansion coefficient between the coating and the substrate by adding rare earth rich in metal ions to the slurry, and solves the problem that the thermal expansion coefficient difference between the substrate and the coating is large, making the coating easy to deform and warping. To solve the problems of warping and cracking, use Potentilla rich in functional groups and microorganisms to compound and modify the slurry to increase the number of functional groups on the surface of the coating slurry to form chemical bonds with the substrate to improve the bonding force between the coating and the substrate , the addition of glass powder makes the coating denser, and makes up for the common defects of poor bonding between the cermet coating and the substrate, easy to fall off, and low density of the formed ceramic film

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0021] First, collect 2kg of waste glass on the construction site and put it in a corundum crucible and put it into a glass electric melting furnace, keep it at 1400℃ and melt it for 2h, quickly pour the molten glass into 4℃ ice water for quenching, filter and separate to obtain glass fragments; Then mix the glass fragments and zirconia ball mill beads obtained above according to the ball-to-battery ratio of 1:20, put them in a ball mill for 1 hour, grind them through a 400-mesh standard sieve, wash 3 times with absolute ethanol, and put them in an oven at 105℃ After drying, the regenerated glass powder is obtained for use; then 1kg of monazite is weighed and placed in a jet mill to pulverize, and washed with a concentration of 0.3 mol / L hydrochloric acid and 0.5 mol / L sodium hydroxide for 3 times, and then the washed Monazite and kaolin are mixed according to a mass ratio of 1:3, then put into a mortar, grind for 30 minutes and pass through a 200-mesh standard sieve to obtain a...

example 2

[0024] Firstly, collect 2.5kg of waste glass on the construction site and put it in a corundum crucible and put it in a glass electric melting furnace, heat and melt at 1500℃ for 2.5h, quickly pour the molten glass into ice water at 5℃ for quenching, filter and separate to obtain broken glass Block; then mix the glass fragments and zirconia ball mill beads obtained above according to the ball-to-material ratio of 1:20, put them in a ball mill for 1.5 hours, grind them through a 400-mesh standard sieve, wash 4 times with absolute ethanol, and put them in an oven After drying at 108°C, regenerated glass powder is obtained for use; then 1.5kg of monazite is weighed and placed in a jet mill to pulverize, and washed with concentration of 0.3mol / L hydrochloric acid and 0.5mol / L sodium hydroxide for 4 times, and then The washed monazite and kaolin are mixed according to the mass ratio of 1:3, then put into a mortar, grind for 35 minutes and pass through a 200-mesh standard sieve to obt...

example 3

[0027] First, collect 3kg of waste glass on the construction site and put it in a corundum crucible and put it in a glass electric melting furnace, heat and melt at 1600℃ for 3h, quickly pour the molten glass into ice water at 6℃ for quenching, filter and separate to obtain glass fragments; Then mix the glass shards and zirconia ball grinding beads obtained above according to the ball-to-battery ratio of 1:20, put them in a ball mill for 2 hours, grind them through a 400-mesh standard sieve, wash them with absolute ethanol 5 times and put them in an oven at 110℃ After drying, the recycled glass powder is obtained for use; then 2kg of monazite is weighed and put into a jet mill to pulverize, and washed 5 times with a concentration of 0.3mol / L hydrochloric acid and 0.5mol / L sodium hydroxide, and then the washed Monazite and kaolin are mixed according to the mass ratio of 1:3, then put into a mortar, grind for 40 minutes and pass a 200-mesh standard sieve to obtain the mixed powder...

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PUM

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Abstract

The invention discloses a preparation method of a carbon steel corrosion-preventing and abrasion-resisting ceramic coating and belongs to the technical field of ceramic coating preparation. Waste glass, natural rare earth ore and ceramic clay serve as the raw materials and are prepared into coating slurry after being subjected to compound modification through plants and microorganisms, the surface of carbon steel is coated with the coating slurry and then is subjected to calcination, and the carbon steel corrosion-preventing and abrasion-resisting ceramic coating is obtained. Rare earth rich in metal ions is added into the slurry, so that the coefficient of thermal expansion between the coating and a matrix is reduced, the problems that as the coefficient difference of thermal expansion between the matrix and the coating is large, the coating is prone to deformation, warping and cracking are solved, potentilla chinensisrich in functional groups and the microorganisms are used for compound modification of the slurry, the number of the functional groups on the surface of the slurry of the coating is increased, and chemical bonds are formed between the coating and matrix to improve the bonding force between the coating and the matrix; and the glass powder is added, so that the compactness of the coating is higher, and the defect that as the bonding fore between a common metal ceramic coating and the matrix is poor, the compactness of a formed ceramic membrane is low is overcome.

Description

Technical field [0001] The invention discloses a preparation method of a carbon steel anticorrosive and wear-resistant ceramic coating, which belongs to the technical field of ceramic coating preparation. Background technique [0002] Coating is a solid continuous film obtained by applying paint to a substrate. It is a thin layer coated on metal, fabric, plastic and other substrates for protection, insulation, decoration and other purposes. At present, some iron and steel companies use very expensive rare metals and high-temperature alloys for spraying when preparing coatings on the surface of metal substrates to form metal coatings with higher production costs. Due to the inherent characteristics of metals, they are There are high temperature softening, non-wearing and easy corrosion phenomena, therefore, the metal coating is difficult to meet the requirements of some special working conditions. [0003] With the development of industry, people have put forward higher requirement...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/05C23C22/73
CPCC23C22/05C23C22/73
Inventor 张静张明林茂平
Owner 张静
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