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Copper alloy containing metal ceramic coating, and preparation method and application thereof

A cermet coating and copper alloy technology, which is applied to mechanical equipment, heating inorganic powder coating, hot gas variable capacity engine devices, etc., can solve the problems of strictly prohibited technology export, achieve simple preparation process, ensure stability, and operate convenient effect

Active Publication Date: 2018-01-12
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there is no copper alloy protective coating that can be directly applied to such an environment in China, and foreign countries are highly confidential in this field, and technology export is strictly prohibited

Method used

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  • Copper alloy containing metal ceramic coating, and preparation method and application thereof
  • Copper alloy containing metal ceramic coating, and preparation method and application thereof
  • Copper alloy containing metal ceramic coating, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] According to glass composition 65Pb 3 o 4 : 14B 2 o 3 : 16BaO: 5SiO 2 Weigh the oxides of each component, mix the weighed powders evenly, melt and keep it at 1200°C for 2.5 hours, then pour the melt into water to obtain block glass. Block glass is crushed, and ball milled in a zirconia ball mill jar for 30 hours to obtain ceramic frit (the particle size of the ceramic frit is 0.1-40 microns);

[0050] The ceramic glass frit, metal nickel powder, and clay were mixed and ball-milled for 10 hours at a mass ratio of 1:1:0.2, and then deionized water was added to prepare a cermet water-based slurry, and the viscosity was adjusted to 10‐14s. The particle size of the nickel metal powder is 0.5-2 microns.

[0051] After degreasing the copper alloy parts of the engine, ultrasonically clean them with distilled water for 30 minutes and dry them.

[0052] The prepared water-based slurry was dispersed by ultrasonic vibration for 1 hour, and then the copper alloy parts were imm...

Embodiment 2

[0056] According to glass composition 55Pb 3 o 4 : 16B 2 o 3 : 11BaO: 18SiO 2 Weigh the oxides of each component, mix the weighed powders evenly, melt and keep it at 1300°C for 3 hours, and then pour the melt into water to obtain block glass. Block glass is crushed, and ball milled in a zirconia ball mill jar for 40 hours to obtain ceramic frit (the particle size of the ceramic frit is 0.1-40 microns);

[0057] The ceramic glass frit, metallic nickel powder, and clay were mixed and ball-milled for 10 hours according to the mass ratio of 1:1.2:0.1, and then deionized water was added to prepare a cermet water-based slurry, and the viscosity was adjusted to 10‐14s. The particle size of the nickel metal powder is 0.5-2 microns.

[0058] After degreasing the copper alloy parts of the engine, ultrasonically clean them with distilled water for 30 minutes and dry them.

[0059] The prepared water-based slurry was dispersed by ultrasonic vibration for 1 hour, and then the copper ...

Embodiment 3

[0064] According to glass composition 52Pb 3 o 4 : 28B 2 o 3 : 15BaO: 5SiO 2 Weigh the oxides of each component, mix the weighed powder evenly, melt and keep it at 1100°C for 2 hours, then pour the melt into water to obtain block glass. Block glass is crushed, and ball milled in a zirconia ball mill jar for 30 hours to obtain ceramic frit (the particle size of the ceramic frit is 0.1-40 microns);

[0065] The ceramic glass frit, metallic nickel powder, and clay were mixed and ball-milled for 10 hours at a mass ratio of 1:0.6:0.3, and then deionized water was added to prepare a cermet water-based slurry, and the viscosity was adjusted to 10‐14s. The particle size of the nickel metal powder is 0.5-2 microns.

[0066] After degreasing the copper alloy parts of the engine, ultrasonically clean them with distilled water for 30 minutes and dry them.

[0067] The prepared water-based slurry was dispersed by ultrasonic vibration for 1 hour, and then the copper alloy parts were i...

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Abstract

The invention relates to a copper alloy containing a metal ceramic coating, and a preparation method and application thereof. The copper alloy containing the metal ceramic coating comprises a copper alloy substrate and the metal ceramic coating wrapped on the substrate. The metal ceramic coating comprises, by mass, 100 parts of ceramic glass, 50-150 parts of nickel powder and 10-40 parts of clay.The ceramic glass comprises, by mass, 50-70% of Pb3O4, 15-30% of B2O3, 10-20% of BaO and 5-20% of SiO. The preparation method comprises the steps of preparing slurry from designed components; coatingthe surface of a copper alloy component with the slurry; conducting firing at 600-1000 DEG C for 30-120 min after drying and curing to obtain a finished product. The copper alloy is simple in process,convenient to operate, controllable in coating thickness and firm and uniform in bonding to the substrate and has good heat shock resistance and oxidation resistance.

Description

technical field [0001] The invention relates to a copper alloy containing a cermet coating and a preparation method and application thereof, belonging to the technical field of anti-oxidation and ablation-resistant coatings. Background technique [0002] A hot-end part of the engine needs to be made of copper alloy. The structure of the part is complex, and it is required to have a gas temperature of 650°C with 92% oxygen, a gas pressure of 55MPa, a gas flow velocity of 320m / s, and a small amount of impurity particles. This requires that the material must have strong erosion resistance and high temperature ablation resistance. [0003] The oxidation products of copper in high temperature environment are mainly CuO and Cu2O. This kind of oxide scale is not protective, so copper is not resistant to oxidation and corrosion at high temperature. To prevent high-temperature oxidation of copper, the following two measures are mainly combined: one is alloying, and anti-oxidation el...

Claims

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Application Information

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IPC IPC(8): B22F7/08C23C24/08C22C19/03C22C32/00C22C29/12B22F5/00F02G1/053
Inventor 古一曾凡浩夏长清
Owner CENT SOUTH UNIV
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