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Tesla turbine disk and production method thereof

A Tesla turbine and carbon fiber technology, applied in the direction of mechanical equipment, blade support components, engine components, etc., can solve problems such as large differences in thermal expansion coefficients, large differences in physical and chemical properties, residual thermal stress at joints, etc., to maintain The shape and size are unchanged, the effect of resisting the erosion of high-temperature jets and improving the bonding strength

Active Publication Date: 2018-12-18
靳普
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to improve the wear resistance of the metal, a layer of ceramic coating will be coated on the metal substrate. However, due to the large difference in physical and chemical properties between ceramics and metals, it is difficult to connect directly, mainly because of the large difference in thermal expansion coefficient between the two. It is easy to generate a large residual thermal stress at the connection

Method used

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  • Tesla turbine disk and production method thereof
  • Tesla turbine disk and production method thereof
  • Tesla turbine disk and production method thereof

Examples

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preparation example Construction

[0038] A preparation method 200 of a metal matrix carbon fiber composite material, such as figure 2 shown, including the following steps:

[0039] Step 210, electroplating the carbon fiber in the electrolyte;

[0040] Step 220, molding the electroplated carbon fiber to obtain a predetermined shape of carbon fiber;

[0041] Step 230 , heating the molded carbon fiber to the melting point of the metal, cooling to room temperature after the metal is melted and mixed, and discharging, so as to obtain the metal-based carbon fiber composite material.

[0042] The metal-based carbon fiber composite material is a nickel-based carbon fiber composite material.

[0043] Specifically, the step 210 includes putting the carbon fiber into an electroplating pool equipped with a nickel-containing electrolyte for electroplating, wherein, in the nickel-containing electrolyte, the mass percentage of nickel is greater than 25%, and the diameter of the carbon fiber is 0.1- 0.3mm, preferably 0.2m...

Embodiment 1

[0070] Preparation method of Tesla turbine disk using nickel-based carbon fiber composite ceramics:

[0071] First, put the carbon fiber into a nickel-containing electrolyte for electroplating; the electrolyte contains 500 g / L of nickel sulfate; 70 g / L of nickel chloride; 40 g / L of boric acid; and 0.1 g / L of sodium lauryl sulfate. Wherein the nickel sulfate is the main salt, the boric acid is the buffer, the nickel chloride is the anti-passivation agent, and the sodium lauryl sulfate is the dispersant. Experimental conditions: pH value is 3-4; temperature is 25°C; electroplating time is 1-12min; current density is 0.1-0.5A / dm2. The carbon fiber has a diameter of 0.2mm. Nickel-based carbon fibers are obtained after electroplating.

[0072] The plated nickel-based carbon fiber is wound on a mandrel to form a disc-shaped carbon fiber; the mandrel is selected from one or more combinations of alumina, zirconium carbide and boron nitride.

[0073] Heat the disc-shaped carbon fibe...

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Abstract

The invention discloses a Tesla turbine disk and a production method thereof. The production method comprises the following steps: electroplating carbon fibers in an electroplating bath provided witha metal electrolyte; winding the electroplated carbon fibers around a spindle to form disc-shaped carbon fibers; heating the disc-shaped carbon fibers and the spindle to the melting point of the metalin order to melt and adhere the metal, and cooling the molten metal to room temperature in order to prepare a metal-based carbon fiber composite material for the Tesla turbine disk; removing the spindle, and processing vent holes in the metal-based carbon fiber composite material for the Tesla turbine disk in a machining manner; anodizing the surface of the metal-based carbon fiber composite material; sintering ceramic on the anodized surface of the metal-based carbon fiber composite material to obtain a ceramic material for the Tesla turbine disk; and polishing the ceramic material by usinga diamond grinding solution to produce the Tesla turbine disk. The Tesla turbine disk produced by the method has the advantages of extremely high hardness, extremely high compressive strength and goodheat resistance.

Description

technical field [0001] The invention relates to the field of composite material preparation, in particular to a method for preparing a Tesla turbine disk and a Tesla turbine disk prepared by the method. Background technique [0002] The Tesla turbine, also known as a bladeless turbine, is shaped like a shaft with multiple smooth and thin discs fixed at a certain distance. The airflow hits these discs from a tangential direction, and the boundary layer effect drives these discs and the shaft Turn together. Although the turbine has the advantages of simple structure, compact volume, high efficiency, and low cost, it has not been widely used because the rigidity of the disk is not enough and easy to deform when the size of the disk is large, resulting in large eddy current deflection and vibration between the disks. [0003] Due to its excellent properties such as high specific strength, high specific modulus and good toughness, metal matrix carbon fiber composites have broad ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/80C04B35/10C04B35/56C04B35/5835F01D5/02C04B35/628
CPCC04B35/803C04B35/806C04B35/10C04B35/5622C04B35/583C04B35/62876C04B2235/3246C04B2235/6562C04B2235/96F01D5/028
Inventor 靳普陈宗良
Owner 靳普
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