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Connecting method for metal and SiC ceramic-based composite material

A connection method and composite material technology, which is applied in the field of connection between metal and SiC ceramic matrix composite materials, can solve the problems of difficult connection of metal injectors, achieve simple operation, improve air tightness and safety, and improve interface strength Effect

Active Publication Date: 2014-04-16
TAICANG PAIOU TECH CONSULTING SERVICE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The invention aims to solve the technical problem that it is difficult to connect the nozzle of SiC ceramic matrix composite material with the head metal injector, and provides a method for connecting metal and SiC ceramic matrix composite material

Method used

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  • Connecting method for metal and SiC ceramic-based composite material
  • Connecting method for metal and SiC ceramic-based composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Pre-plating treatment: Put the parts to be plated into an ultrasonic cleaner to clean and remove oil, and then paste insulating tape on the parts other than the overlapping parts of the parts to be connected, including the non-connected inner holes, periphery and end faces of the two parts;

[0024] (2) Fix the connection position of the two parts: set the metal part on the periphery of the ceramic base part in the form of a sleeve, the axial overlapping length is 7mm, and leave a 0.5mm reserved space hole in the circumferential connection direction, and put it into the electroplating nickel solution , the liquid level of the plating solution shall be subject to submerging the part to be connected;

[0025] (3) The integrated electroplating connection of the two parts: the fixed connecting part is used as the substrate to be plated and the cathode, and the ring-shaped nickel column is used as the anode. The inner walls of the two parts with gaps) begin to adsorb and...

Embodiment 2

[0028] (1) Pre-plating treatment: Put the parts to be plated into an ultrasonic cleaner to clean and remove oil, and then paste insulating tape on the parts other than the overlapping parts of the parts to be connected, including the non-connected inner holes, periphery and end faces of the two parts;

[0029] (2) Fix the connection position of the two parts: set the metal part on the periphery of the ceramic base part in the form of a sleeve, the axial overlapping length is 10mm, and leave a 1.5mm reserved space hole in the circumferential connection direction, and put it into the electroplating nickel solution , the liquid level of the plating solution shall be subject to submerging the part to be connected;

[0030] (3) The integrated electroplating connection of the two parts: the fixed connecting part is used as the substrate to be plated and the cathode, and the ring-shaped nickel column is used as the anode. The inner walls of the two parts with gaps) begin to adsorb an...

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Abstract

The invention relates to a connecting method for metal and a SiC ceramic-based composite material. The method is characterized in that a metal component and a ceramic component are synchronously connected into a whole by electroplating nickel between the two components, and the method has the characteristics of low energy consumption, strong connection strength and high sealing performance and reliability. The method comprises the following steps of adhering parts (unconnected parts of the metal component and the SiC ceramic component), which are not required to be electroplated, of the components to be connected by using an insulating tape to prevent the parts from being in contact with a nickel electroplating solution; sleeving the metal component on the periphery of the ceramic component by trepan boring in such a way that a proper axial length and a proper peripheral gap are reserved, placing the metal component and the ceramic component in the nickel electroplating solution, and performing electroplating to obtain an integrated metal-ceramic connecting piece, wherein nickel crystal particles are densely filled and densified in the reserved gap.

Description

technical field [0001] The invention relates to a connection method of dissimilar materials, in particular to a connection method of metal and SiC ceramic matrix composite material. Background technique [0002] The power system of an aviation vehicle requires its thrust chambers (missile engine thrust chamber, satellite attitude, orbit control thrust chamber, long-range missile warhead final attitude modification engine thrust chamber, etc.) to have the characteristics of light weight, fast response, small size, and high reliability. This type of thrust chamber is composed of a nozzle (body) and a propellant injector (head) in a sealed connection. Silicon carbide ceramic matrix composites do not melt at 2500°C, have excellent oxidation resistance in the range of 1000-1650°C, and are resistant to various acid and alkali corrosion. They not only have high chemical stability, but also have good mechanical properties. In particular, it has excellent high-temperature performanc...

Claims

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Application Information

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IPC IPC(8): C04B37/02
Inventor 陈照峰聂丽丽
Owner TAICANG PAIOU TECH CONSULTING SERVICE