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Copper-based powder dispersion ceramic as well as preparation method and application thereof

A technology of copper-based powder and ceramics, which is applied in the field of ceramic materials, can solve problems such as the inability to realize high-speed, high-efficiency, high-safety performance of high-speed rail transit vehicles, unsatisfactory service life performance of brake pads, and damage to high-speed train attendance efficiency. Achieve the effect of strong kinetic energy absorption and conversion, good heat dissipation and heat recovery, and good effect

Inactive Publication Date: 2015-07-08
刘伟
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0026] At present, several institutions and companies have disclosed some related technologies. Although some of them have partially solved the problems of falling blocks, falling corners and partial friction, they are still not ideal in terms of the most critical service life of brake pads. Although The unit manufacturing cost may be low, but due to the short service life and frequent replacement, the final overall cost has not been reduced, and at the same time, the attendance efficiency of high-speed trains has been damaged, and the requirements for high-speed, high-efficiency, and high-safety performance of high-speed rail transit vehicles cannot be achieved.

Method used

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  • Copper-based powder dispersion ceramic as well as preparation method and application thereof
  • Copper-based powder dispersion ceramic as well as preparation method and application thereof
  • Copper-based powder dispersion ceramic as well as preparation method and application thereof

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Experimental program
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specific Embodiment approach

[0088] In the second specific embodiment, the raw materials used to prepare the copper-based powder-dispersed ceramics are composed of the following components by mass percentage:

[0089] Copper powder 50~75, diamond powder 1~5, titanium diboride powder 1~5, silicon carbide powder 1~6, boron carbide 1~6, aluminum powder 2~8, chromium powder 1~4, molybdenum powder 1~ 4. Nickel powder 1~6, tin powder 2~10, graphite powder 5~8, tungsten disulfide powder 1~7;

[0090] In the third specific embodiment, the raw materials used to prepare the copper-based powder-dispersed ceramics are composed of the following components by mass percentage:

[0091] Copper powder 50~75, diamond powder 1~5, titanium diboride powder 1~5, boron nitride powder 1~6, silicon nitride powder 1~6, aluminum powder 2~8, chromium powder 1~4, molybdenum powder 1~4, nickel powder 1~6, tin powder 2~10, graphite powder 5~8, tungsten disulfide powder 1~7;

[0092] The above-mentioned copper-based powder-dispersed c...

Embodiment 1

[0098] Copper powder 61, diamond powder 3, titanium diboride powder 2, alumina powder 4, silicon oxide powder 3, aluminum powder 3, chromium powder 2, molybdenum powder 2, nickel powder 4, tin powder 5, graphite powder 6, two Tungsten sulfide powder 5;

[0099] The preparation method is as follows:

[0100] ①Raw material mixing: mix all raw materials evenly;

[0101] ② Blank making: put the raw material powder mixed in step ① into the mold, press it on the hydraulic press at 15MPa, hold the pressure for 3 minutes to form, and demould;

[0102] ③Sintering: put the green body obtained in step ② into an inert atmosphere, and pressurize and sinter with nitrogen; the temperature of the nitrogen-filled pressurized sintering is 880°C, the pressure is 3MPa, and the sintering time is 5 hours.

Embodiment 2

[0104] Copper powder 63, diamond powder 2, titanium diboride powder 2, silicon carbide powder 4, boron carbide 3, aluminum powder 3, chromium powder 2, molybdenum powder 2, nickel powder 3, tin powder 6, graphite powder 5, disulfide Tungsten powder 5;

[0105] Preparation method is the same as embodiment 1, and difference is:

[0106] ③Sintering: put the green body obtained in step ② into an inert atmosphere, and pressurize and sinter with nitrogen; the temperature of the nitrogen-filled pressurized sintering is 880°C, the pressure is 3MPa, and the sintering time is 5 hours.

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Abstract

The invention relates to copper-based powder dispersion ceramic as well as a preparation method and application thereof, and relates to the field of ceramic materials. The copper-based powder dispersion ceramic is prepared from an anti-abrasion constituent element as one of the raw materials, wherein the anti-abrasion constituent element comprises the following components by mass percent of all the raw materials: 1-5 percent of diamond powder and 1-5 percent of titanium diboride powder. The copper-based powder dispersion ceramic is high in impact pressure resistance, high in mechanical intensity, high in friction and abrasion resistance, long in service life, high in heat dissipation property and heat recovery property, high in high-temperature and low-temperature resistance, high in acid, alkaline, oil, water and the like corrosion resistance and the like.

Description

technical field [0001] The invention relates to a copper-based powder dispersed ceramic, a preparation method and application thereof, and relates to the field of ceramic materials. Background technique [0002] With the speed of social progress and the pace of life accelerating, the breadth and depth of economic development are increasing, and people's requirements for the convenience of travel are getting higher and higher. The expectations for increased speed, security and reliability are growing and the requirements are becoming more demanding. One of the most critical core issues involved is the braking of high-speed rail vehicles. [0003] The principle of the existing high-speed rail vehicle is similar to that of the traditional railway train braking system, but the structure adopts a more reasonable distributed braking execution unit (including the brake disc and brake pad on the wheel axle). When a high-speed train enters a station or encounters an emergency braki...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C9/00C22C32/00C22C26/00C22C1/05F16D65/04
Inventor 刘伟
Owner 刘伟
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