Solder for welding carbon/silicon carbide ceramic matrix composite material and titanium-aluminum-based alloy and soldering method

A technology of silicon carbide ceramic matrix and composite materials, which is applied in the field of solder and brazing for welding carbon/silicon carbide ceramic matrix composite materials and titanium-aluminum-based alloys. It can solve the problems of complex process and low service temperature, and reduce residual stress. , high welding strength and high welding production efficiency

Inactive Publication Date: 2010-07-28
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention aims to solve the problems of low service temperature of joints welded by silver-based brazing filler metals of existing welding composite materials and titanium alloys, and complex processes of carbon / silicon carbide composite materials and metal indirect brazing methods, and provides welding carbon / carbonization Brazing material and brazing method of silicon ceramic matrix composite material and titanium aluminum matrix alloy

Method used

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  • Solder for welding carbon/silicon carbide ceramic matrix composite material and titanium-aluminum-based alloy and soldering method
  • Solder for welding carbon/silicon carbide ceramic matrix composite material and titanium-aluminum-based alloy and soldering method
  • Solder for welding carbon/silicon carbide ceramic matrix composite material and titanium-aluminum-based alloy and soldering method

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specific Embodiment approach 1

[0012] The brazing material for welding carbon / silicon carbide ceramic matrix composite material and titanium-aluminum-based alloy in this embodiment makes the carbon / silicon carbide ceramic-based composite material and titanium-aluminum-based alloy directly in-situ composite reaction brazed connection, the welding strength is high, and the joint room temperature is high. The shear strength reaches 40MPa~105MPa, and the shear strength at 600°C reaches 30MPa~70MPa, and the service temperature is higher than 600°C.

[0013] Embodiment 2: This embodiment differs from Embodiment 1 in that: the fineness of the nickel powder, titanium powder, titanium dihydride powder or boron powder is 200 mesh to 400 mesh. Others are the same as in the first embodiment.

specific Embodiment approach 2

[0014] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the fineness of the nickel powder, titanium powder, titanium dihydride powder or boron powder is 300 mesh. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0015] Embodiment 4: The difference between this embodiment and Embodiments 1 to 3 is that the brazing filler metal for welding carbon / silicon carbide ceramic matrix composite material and titanium-aluminum base alloy consists of 100 parts by mass of titanium material powder, 70 parts ~160 parts of nickel powder and 2~10 parts of boron powder.

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Abstract

The invention discloses a solder for welding a carbon/silicon carbide ceramic matrix composite material and a titanium-aluminum-based alloy and a soldering method, relating to solders and soldering methods thereof. By the invention, the problems that the using temperature of the welding joint of the conventional silver-based solder for welding composite materials and titanium alloys is low and the process of a traditional method for indirectly soldering the carbon/silicon carbide ceramic matrix composite materials and metals is complex. The solder comprises titanium material powder, nickel powder and boron powder. The method comprises the following steps of: performing ball milling on the solder, preparing the solder into paste, coating the paste on a joint face to be welded of the carbon/silicon carbide ceramic matrix composite material and the titanium-aluminum-based alloy, putting a piece to be welded into a vacuum heating furnace, heating and preserving heat to complete the welding. The joint welded by the invention has a shearing strength of 40-105MPa at the room temperature, a shearing strength of 30-70MPa at 600 DEG C and the using temperature of not less than 600 DEG C, the soldering process is simple, and the welding efficiency is high. The solder can be used for the welding the carbon/silicon carbide ceramic matrix composite material and the titanium-aluminum-based alloy or a titanium-aluminum-based alloy piece.

Description

technical field [0001] The present invention relates to solder and its brazing method. Background technique [0002] Carbon / silicon carbide ceramic matrix composite material is a new type of ultra-high temperature structural material, which has broad application prospects in aerospace, weaponry and other industrial fields. However, the preparation and forming methods of carbon / silicon carbide ceramic matrix composites limit the promotion of its engineering applications. Therefore, solving its connection technology with other materials, especially high-temperature structural materials, is the key to ensuring its wide application in the above fields. Titanium-aluminum-based alloy is a high-temperature structural material with many superior properties. Using it in conjunction with carbon / silicon carbide composite materials can not only meet the requirements of high-temperature performance, but also realize the possibility of manufacturing complex components. Existing brazing m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B37/02
Inventor 张丽霞杨振文刘玉章何鹏曹健冯吉才
Owner HARBIN INST OF TECH
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