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Partial transient liquid phase bonding method for carbon/carbon composite material and nickel-base superalloy

A nickel-based superalloy, instantaneous liquid phase connection technology, applied in the field of connection of dissimilar materials, can solve the problem of difficult connection with nickel-based superalloy, and achieve the effect of high shear strength and effective connection

Active Publication Date: 2013-07-03
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to solve the technical problem that it is difficult to connect carbon / carbon composite materials and nickel-based superalloys, the present invention proposes a partial instantaneous liquid phase connection method between carbon / carbon composite materials and nickel-based superalloys

Method used

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  • Partial transient liquid phase bonding method for carbon/carbon composite material and nickel-base superalloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A 15mm×10mm×4mm carbon / carbon composite material and a nickel-based superalloy of equal size were joined at 890°C.

[0026] (1) Use 400# sandpaper to polish the surface to be connected between the carbon / carbon composite material and the nickel-based superalloy, and then use 600#, 800#, and 1000# sandpaper to polish the nickel-based superalloy. Clean the polished sample with alcohol for 30 minutes with an ultrasonic cleaner, and then dry it in an oven at 100°C for 1 hour.

[0027] (2) Cut all the foils into small pieces of 15mm×10mm, gently polish and clean the oxide film on the surface of Ti foil and Ni foil with 2000# sandpaper, and pickle the Cu foil to remove the oxide film. Dry the cleaned foil in an oven at 80 °C for 20 min.

[0028] (3) Place the foil on the surface to be connected of the carbon / carbon composite material in the order of Ti foil / Ni foil / Cu foil / Ni foil, and then place the nickel-based superalloy to be connected on the Ni foil to form carbon / Car...

Embodiment 2

[0038] A 15mm×10mm×4mm carbon / carbon composite material and a nickel-based superalloy of equal size were joined at 1010°C.

[0039] (1) Use 400# sandpaper to polish the surface to be connected between the carbon / carbon composite material and the nickel-based superalloy, and then use 600#, 800#, and 1000# sandpaper to polish the nickel-based superalloy. Clean the polished sample with alcohol for 30 minutes with an ultrasonic cleaner, and then dry it in an oven at 100°C for 1 hour.

[0040] (2) Cut all the foils into small pieces of 15mm×10mm, gently polish and clean the oxide film on the surface of Ti foil and Ni foil with 2000# sandpaper, and pickle the Cu foil to remove the oxide film. Dry the cleaned foil in an oven at 80 °C for 20 min.

[0041] (3) Place the foil on the surface to be connected of the carbon / carbon composite material in the order of Ti foil / Ni foil / Cu foil / Ni foil, and then place the nickel-based superalloy to be connected on the Ni foil to form a carbon / ...

Embodiment 3

[0051] A 15mm×10mm×4mm carbon / carbon composite material and a nickel-based superalloy of equal size were joined at 1030°C.

[0052] (1) Use 400# sandpaper to polish the surface to be connected between the carbon / carbon composite material and the nickel-based superalloy, and then use 600#, 800#, and 1000# sandpaper to polish the nickel-based superalloy. Clean the polished sample with alcohol for 30 minutes with an ultrasonic cleaner, and then dry it in an oven at 100°C for 1 hour.

[0053] (2) Cut all the foils into small pieces of 15mm×10mm, gently polish and clean the oxide film on the surface of Ti foil and Ni foil with 2000# sandpaper, and pickle the Cu foil to remove the oxide film. Dry the cleaned foil in an oven at 80 °C for 20 min.

[0054] (3) Place the foil on the surface to be connected of the carbon / carbon composite material in the order of Ti foil / Ni foil / Cu foil / Ni foil, and then place the nickel-based superalloy to be connected on the Ni foil to form a carbon / ...

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Abstract

The invention relates to a partial transient liquid phase bonding method for a carbon / carbon composite material and a nickel-base superalloy. The partial transient liquid phase bonding method comprises the following steps: forming an intermediate layer by foils such as a Ti foil, a Ni foil, a Cu foil and the like, placing the intermediate layer between the clean carbon / carbon composite material and the clean nickel-base superalloy to form a sandwich structure according to the sequence of Ti foil, Ni foil, Cu foil and Ni foil, then placing the structure into a vacuum hot-pressing furnace and connecting the carbon / carbon composite material and the nickel-base superalloy by utilizing a partial liquid phase diffusion method; heating to carry out primary partial transient liquid phase bonding so as to implement connection of metal interfaces; and heating to carry out secondary partial liquid phase bonding so as to implement connection of the carbon / carbon composite material and the intermediate layer. The method implements connection of the carbon / carbon composite material and the nickel-base superalloy; and the connection strength is high and the shear strength of a joint reaches 14.99 to 26.1 MPa.

Description

technical field [0001] The invention relates to a connection method of dissimilar materials, in particular to a connection method of a carbon / carbon composite material and a nickel-based superalloy. Background technique [0002] Carbon / carbon composite material is a strategic high-temperature structural material with low density, high specific strength, low expansion coefficient, good high-temperature performance, anti-ablation, corrosion resistance, etc. Nuclear energy and other fields have a wide range of applications. However, due to the brittleness of carbon / carbon composite materials, it is difficult to process into complex parts and the production cost is high, which limits their application. Therefore, it is necessary to connect carbon / carbon composite materials and metals to take advantage of the performance advantages of both, thereby saving materials and reducing costs. Nickel-based superalloys are called the heart of the engine and are widely used in aviation an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B37/02
Inventor 史小红张鑫卢棉花李贺军李克智
Owner NORTHWESTERN POLYTECHNICAL UNIV
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