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High-temperature resistant ceramic coating for metal based hot spraying and spraying method of coating

A technology of high temperature resistant ceramics and thermal spraying, which is applied in the direction of metal material coating process, coating, fusion spraying, etc., can solve the problems of poor high temperature resistance and other problems, and achieve good bonding strength, good mechanical properties, and ablation resistance Good results

Active Publication Date: 2015-08-19
SUZHOU TONGMING MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to propose a high-temperature-resistant ceramic coating for metal-based thermal spraying and its spraying method. The surface thickness of the prepared ceramic coating is ≥ 2 mm, and the density is ≥ 96%, which overcomes the traditional thermal spraying technology. Disadvantages of poor high temperature resistance of ceramic coatings less than 10mm

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] This embodiment provides a high temperature resistant ceramic coating for metal-based thermal spraying, the composition of its raw materials includes by weight: forsterite: 20 parts, wollastonite: 18 parts, quartz: 2 parts, titanium oxide: 3 parts, silicon carbide: 6 parts, magnesium chloride: 9 parts, zirconium phosphate: 3 parts, calcium carbonate: 2 parts, additives: 5 parts, cerium oxide: 2 parts, rare earth: 1 part, zircon: 1 part, Ethylene glycol: 10 parts;

[0029] The composition of the rare earth is: cerium: 7.5%, yttrium: 8.4%, neodymium: 6.1%, praseodymium: 4.7%, samarium: 8.2%, terbium: 12.2%, and the balance is lanthanum and unavoidable impurities ;

[0030] The components of the auxiliary agent are calculated in parts by weight: aluminum oxide: 25 parts, manganese dioxide: 15 parts, polyvinyl alcohol: 5 parts, tetrabasic zinc chromate: 2 parts, carboxymethyl fiber Vegetarian: 8 servings.

[0031] A kind of spraying method for the high-temperature-resist...

Embodiment 2

[0040] The present embodiment provides a high-temperature-resistant ceramic coating for metal-based thermal spraying, the composition of its raw materials includes by weight: forsterite: 22 parts, wollastonite: 23 parts, quartz: 6 parts, titanium oxide: 4 parts, silicon carbide: 8 parts, magnesium chloride: 11 parts, zirconium phosphate: 4 parts, calcium carbonate: 3 parts, additives: 6 parts, cerium oxide: 3 parts, rare earth: 2 parts, zircon: 2 parts, Ethylene glycol: 13 parts;

[0041]The composition of the rare earth is: cerium: 7.6%, yttrium: 8.9%, neodymium: 6.8%, praseodymium: 5.2%, samarium: 9.5%, terbium: 13.2%, and the balance is lanthanum and unavoidable impurities ;

[0042] The components of the auxiliary agent are calculated in parts by weight: aluminum oxide: 28 parts, manganese dioxide: 19 parts, polyvinyl alcohol: 6 parts, tetrabasic zinc chromate: 5 parts, carboxymethyl fiber Vegetarian: 10 servings.

[0043] A kind of spraying method for the high-temperat...

Embodiment 3

[0052] This embodiment provides a high-temperature-resistant ceramic coating for metal-based thermal spraying. The composition of its raw materials includes by weight: forsterite: 24 parts, wollastonite: 25 parts, quartz: 10 parts, titanium oxide: 5 parts, silicon carbide: 10 parts, magnesium chloride: 13 parts, zirconium phosphate: 5 parts, calcium carbonate: 4 parts, additives: 7 parts, cerium oxide: 4 parts, rare earth: 2 parts, zircon: 2 parts, Ethylene glycol: 15 parts;

[0053] The composition of the rare earth is: cerium: 7.8%, yttrium: 9.6%, neodymium: 7.8%, praseodymium: 5.5%, samarium: 10.5%, terbium: 15.2%, and the balance is lanthanum and unavoidable impurities ;

[0054] The components of the auxiliary agent are calculated in parts by weight: aluminum oxide: 30 parts, manganese dioxide: 22 parts, polyvinyl alcohol: 7 parts, tetrabasic zinc chromate: 7 parts, carboxymethyl fiber Vegetables: 12 servings.

[0055] A kind of spraying method for the high-temperature...

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Abstract

The invention relates to a high-temperature resistant ceramic coating for metal based hot spraying. The high-temperature resistant ceramic coating is made of raw materials including, by weight, 20-24 parts of forsterite, 18-25 parts of wollastonite, 2-10 parts of quartz, 3-5 parts of titanium oxide, 6-10 parts of silicon carbide, 9-13 parts of magnesium chloride, 3-5 parts of zirconium phosphate, 2-4 parts of calcium carbonate, 5-7 parts of addition agents, 2-4 parts of cerium oxide, 1-2 parts of rare earth, 1-2 parts of zirconite and 10-15 parts of ethylene glycol. The components and the proportion of ceramic powder is proper, the size of an average particle of the ceramic coating is 52.8nm, a melting shell is of a cylindrical crystal structure with high directionality, the coating is fine in impact resistance, high in hardness, wide in temperature resistance, fine in ablation resistance and high in strength and has excellent mechanical properties, a used plasma device is stable in current, the formed aluminum oxide coating is flat and compact, and bonding strength of the coating and metal base materials are fine.

Description

technical field [0001] The invention relates to a thermal sprayed ceramic and a spraying method thereof, in particular to a high-temperature-resistant ceramic coating and a spraying method thereof for metal-based thermal spraying, and belongs to the technical field of thermal spraying. Background technique [0002] With the development of society, ceramics occupy an important position in many fields and are recognized by many consumers. The use environment of ceramics is very complicated, especially in high temperature environments, which greatly reduces the service life and increases costs. Therefore, the traditional Advanced ceramic materials can no longer meet the increasingly demanding work requirements, and the development of new composite materials with high temperature resistance, corrosion resistance, impact resistance, fatigue resistance and wear resistance has become an important topic in material science research. Among them, the method of coating the ceramic laye...

Claims

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Application Information

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IPC IPC(8): C23C4/06C23C4/12
Inventor 吴明黄莉黄世宇刘芳
Owner SUZHOU TONGMING MACHINERY
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