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Impact-resistant ceramic coating layer for metal-based thermal spraying and spraying method thereof

A technology of impact-resistant ceramics and thermal spraying, applied in metal material coating process, coating, fusion spraying and other directions, can solve problems such as poor impact resistance, and achieve the effect of good bonding strength, high strength and stable current

Inactive Publication Date: 2015-08-26
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 an impact-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 impact resistance of medium ceramic coatings

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] This embodiment provides a kind of impact-resistant ceramic coating for metal-based thermal spraying, the composition of its raw materials includes by weight: basalt: 25 parts, kaolin: 13 parts, clay: 8 parts, silicon dioxide: 3 parts, Titanium oxide: 2 parts, sodium oxide: 1 part, calcium lignosulfonate: 4 parts, zirconia: 2 parts, additives: 6 parts, glass fiber: 4 parts, nickel sulfate: 2 parts, rare earth: 1 part, Sodium zirconate: 1 part, deionized water: 5 parts;

[0029] The composition of the rare earth is: erbium: 8.8%, holmium: 3.7%, neodymium: 9.2%, promethium: 4.5%, gadolinium: 13.2%, europium: 10.2%, and the balance is lanthanum and unavoidable impurities ;

[0030] The components of the auxiliary agent are calculated in parts by weight: aluminum oxide: 20 parts, calcium carbonate: 10 parts, lead naphthenate: 5 parts, silica sol: 2 parts, hydroxyalkylphenol polyoxyethylene ether : 8 servings.

[0031] A kind of spraying method for the impact-resistant ce...

Embodiment 2

[0040]This embodiment provides a kind of impact-resistant ceramic coating for metal-based thermal spraying, the composition of its raw materials includes by weight: basalt: 28 parts, kaolin: 18 parts, clay: 9 parts, silicon dioxide: 6 parts, Titanium oxide: 4 parts, sodium oxide: 3 parts, calcium lignosulfonate: 6 parts, zirconia: 3 parts, additives: 7 parts, glass fiber: 6 parts, nickel sulfate: 5 parts, rare earth: 1 part, Sodium zirconate: 2 parts, deionized water: 7 parts;

[0041] The composition of the rare earth is: erbium: 9.1%, holmium: 4.2%, neodymium: 9.8%, promethium: 5.1%, gadolinium: 14.5%, europium: 10.5%, and the balance is lanthanum and unavoidable impurities ;

[0042] The components of the auxiliary agent are calculated in parts by weight: aluminum oxide: 25 parts, calcium carbonate: 14 parts, lead naphthenate: 7 parts, silica sol: 4 parts, hydroxyalkylphenol polyoxyethylene ether : 10 servings.

[0043] A kind of spraying method for the impact-resistant ...

Embodiment 3

[0052] This embodiment provides a kind of impact-resistant ceramic coating for metal-based thermal spraying, the composition of its raw materials includes by weight: basalt: 32 parts, kaolin: 20 parts, clay: 10 parts, silicon dioxide: 8 parts, Titanium oxide: 5 parts, sodium oxide: 4 parts, calcium lignosulfonate: 8 parts, zirconia: 4 parts, additives: 8 parts, glass fiber: 8 parts, nickel sulfate: 7 parts, rare earth: 2 parts, Sodium zirconate: 2 parts, deionized water: 10 parts;

[0053] The composition of the rare earth is: erbium: 9.4%, holmium: 4.6%, neodymium: 10.8%, promethium: 5.5%, gadolinium: 15.5%, europium: 10.8%, and the balance is lanthanum and unavoidable impurities ;

[0054] The components of the auxiliary agent are calculated in parts by weight: aluminum oxide: 29 parts, calcium carbonate: 18 parts, lead naphthenate: 8 parts, silica sol: 6 parts, hydroxyalkylphenol polyoxyethylene ether : 13 servings.

[0055] A kind of spraying method for the impact-resis...

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Abstract

The invention discloses an impact-resistant ceramic coating layer for metal-based thermal spraying. The impact-resistant ceramic coating layer comprises the following raw materials in parts by weight: 25-32 parts of basalt, 13-20 parts of kaolin, 8-10 parts of clay, 3-8 parts of silicon dioxide, 2-5 parts of titanium oxide, 1-4 parts of sodium oxide, 4-8 parts of calcium lignosulphonate, 2-4 parts of zirconium oxide, 6-8 parts of assistant, 4-8 parts of glass fibers, 2-7 parts of nickel sulfate, 1-2 parts of rare earth, 1-2 parts of sodium zirconate, and 5-10 parts of de-ionized water, wherein the rare earth comprises the following components in percentage by mass: 8.8-9.4% of erbium, 3.7-4.6% of holmium, 9.2-10.8% of neodymium, 4.5-5.5% of promethium, 13.2-15.5% of gadolinium, 10.2-10.8% of europium, and the balance of lanthanum and inevitable impurities. The impact-resistant ceramic coating layer in proper in ceramic powder components and ratios; the average grain size of the ceramic coating layer is 52.8 nm; a molten shell adopts a columnar crystal structure with stronger directivity; the ceramic coating layer is excellent in impact resistance, high in hardness, wider in temperature resistance, excellent in ablation resistance, excellent in mechanical performance and high in strength; adopted plasma spraying equipment is stable in current; a formed aluminum oxide coating layer is smooth and compact; and the bonding strength with a metal matrix is high.

Description

technical field [0001] The invention relates to a thermal sprayed ceramic and a spraying method thereof, in particular to an impact-resistant ceramic coating for metal-based thermal spraying and a spraying method thereof, belonging 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 layer on the me...

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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