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Diffusion bonding method of zirconium diboride-silicon carbide composite material and metal alloy

A technology of zirconium diboride silicon carbide and zirconium silicon carbide, which is applied in the field of diffusion connection between zirconium diboride silicon carbide composite materials and metal alloys, can solve the problem of low strength of active brazed joints, and achieve enhanced joint connection strength , high strength and plastic deformation ability, the effect of enhancing the connection strength

Active Publication Date: 2013-10-02
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of low active brazed joint strength between existing zirconium diboride silicon carbide composite materials and metal alloys, and provide a diffusion bonding method for zirconium diboride silicon carbide composite materials and metal alloys

Method used

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Experimental program
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specific Embodiment approach 1

[0015] Specific embodiment one: In this embodiment, the diffusion bonding method of zirconium diboride silicon carbide composite material and metal alloy is carried out according to the following steps:

[0016] 1. Pretreatment of zirconium diboride silicon carbide composite material and metal alloy: After grinding the zirconium diboride silicon carbide composite material and the metal alloy to be connected to it to expose the new surface, under the condition of ultrasonic power of 80~120W, Wash with acetone for 5~10min, then dry;

[0017] 2. Pretreatment of foamed nickel intermediate layer: Clean the foamed nickel intermediate layer with acetone for 5-10 minutes under the condition of ultrasonic power of 80~120W, dry it and place it between the zirconium diboride silicon carbide composite material and the metal alloy Composition of parts to be welded;

[0018] 3. Diffusion welding connection: place the parts to be welded in step 2 in a vacuum diffusion welding furnace, and e...

specific Embodiment approach 2

[0025] Embodiment 2: This embodiment differs from Embodiment 1 in that: in step 1, the ultrasonic power is 90-110 W, and the acetone is used for cleaning for 6-9 minutes. Other steps and parameters are the same as in the first embodiment.

specific Embodiment approach 3

[0026] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that in Step 2, the ultrasonic power is 90-110W, and the cleaning is performed with acetone for 6-9 minutes. Other steps and parameters are the same as those in Embodiment 1 or Embodiment 2.

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Abstract

The invention relates to a bonding method of a zirconium diboride-silicon carbide composite material and a metal alloy, particularly a diffusion bonding method of a zirconium diboride-silicon carbide composite material and a metal alloy. The invention aims to solve the problem of low strength of the active brazed joint of the existing zirconium diboride-silicon carbide composite material and metal alloy. The method comprises the following steps: 1. pretreating the zirconium diboride-silicon carbide composite material and the metal alloy; 2 pretreating a foam nickel middle layer; and 3. carrying out diffusion welding bonding. The method relieves the joint stress, and enhances the joint strength. The shear strength of the diffusion welding joint obtained by the method is 176.5-208.1MPa, and is enhanced by 76-197% as compared with the shear strength of the bonding joint by a brazing process. The invention can be used in the field of diffusion welding bonding.

Description

technical field [0001] The invention relates to a connection method of a zirconium diboride silicon carbide composite material and a metal alloy. Background technique [0002] Zirconium diboride (ZrB 2 )-based composite material is a new type of ultra-high temperature structural material, which has excellent high temperature chemical stability, high electrical conductivity, high thermal conductivity and strong ablation resistance, and can be widely used in aerospace, weaponry and other industries field. However, due to the high hardness and brittleness of zirconium diboride silicon carbide composite materials, it is difficult to prepare large-scale and complex components. Therefore, realizing its reliable connection with other materials, especially high-temperature alloys, is the key to its application in the engineering field. At present, the connection method between zirconium diboride silicon carbide composite material and metal alloy mainly adopts brazing method, whic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B37/02
Inventor 何鹏林铁松杨卫岐
Owner HARBIN INST OF TECH