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Wear-resistant and low-friction coatings and articles coated with said coatings

A technology of coating composition and oxide, applied in the direction of coating, metal material coating process, blade support element, etc., can solve the problems of non-existent and difficult to control coating microstructure, low friction performance, etc.

Inactive Publication Date: 2011-12-21
GENERAL ELECTRIC CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, they may not have sufficiently low-friction properties, and moreover, it is difficult to control the microstructure of such coatings during thermal spraying

Method used

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  • Wear-resistant and low-friction coatings and articles coated with said coatings
  • Wear-resistant and low-friction coatings and articles coated with said coatings
  • Wear-resistant and low-friction coatings and articles coated with said coatings

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] Embodiment 1: Preparation of NiO-B 2 o 3 solid state method

[0064] 2.772 g NiO powder and 2.585 g B 2 o 3 The powders are milled together for about 3-6 hours. The powder was then extracted and heat treated at about 400°C for about 1 hour, followed by heat treatment at 900°C for about 1 hour.

Embodiment 2

[0065] Embodiment 2: Preparation of NiO-B 2 o 3 Alternative solid-state method of

[0066] 2.772g B 2 o 3 or 4.924g H 3 BO 3 Dissolve in water, then mix with 4.28g NiO or 5.313g nickel hydroxide Ni(OH) 2 Powders are mixed together. After milling for about 3-6 hours, the water was evaporated and the extracted powder was subjected to a heat treatment at about 400°C for about 1 hour, followed by a heat treatment at about 900°C for about 1 hour.

Embodiment 3

[0067] Example 3: Formation of Coating Composition (Sample 1)

[0068] 8.986 g NiCr powder and 60.656 g Cr 3 C 2 The powder was milled for about 10 hours. This mixture was further mixed with 5.357 g of NiO-B synthesized using the solid-state method described in Example 1 2 o 3 Powder mix. This mixing was performed in a rack mill for about 1 hour. The powder has particles having a particle size of less than about 10 microns, with about 90% of the particles having a particle size of about 6 microns.

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Abstract

The present invention provides a composition for wear-resistant and low-friction coatings. The coating composition contains a hard ceramic phase, a metal binder phase and a lubricant phase. The lubricant phase contains multicomponent oxides. This invention also describes an article having a wear-resistant and low-friction coating and a method of making the coating.

Description

technical field [0001] The present invention generally relates to coatings for articles. In particular, the present invention relates to protective coatings that provide wear-resistant and low-friction properties to articles exposed to high temperatures. Examples of such articles include turbomachines, such as turbine engines. Background technique [0002] Metal components are widely used in industrial applications under a variety of operating conditions. In many cases, various components are provided with coatings that impart various properties such as corrosion resistance, heat resistance, oxidation resistance, and wear resistance. As one example, various components of turbine engines are often coated with thermal barrier coatings to effectively increase the temperatures at which they can operate. Other examples of articles requiring some type of protective coating include pistons for internal combustion engines and other types of machines. [0003] Abrasion resistant ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C30/00F01D5/28
CPCC23C4/10C23C30/00C23C4/06C23C4/04C23C4/065C23C24/04C09D1/00C09D5/38C23C4/067
Inventor P·马修K·阿南德M·纳亚克M·纳格什S·蒂姆高达
Owner GENERAL ELECTRIC CO
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