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Boron-containing titanium-based amorphous solder for braze welding Si3N4 ceramic and preparation method thereof

A technology of ceramics and brazing materials, which is applied in the fields of Ti-Zr-Ni-Cu-B high-temperature active amorphous brazing filler metals and its preparation, brazing materials, boron-containing titanium-based amorphous brazing filler metals and its preparation, and can solve the problem of poor high-temperature performance , Cu-Ti solder cannot be prepared and formed, and achieve good toughness, smooth sides and smooth surface

Inactive Publication Date: 2010-06-02
JIANGSU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Technical problem: the purpose of the invention is to solve the current problem of brazing Si 3 N 4 The problem that ceramic Ag-Cu-Ti solder has poor high temperature performance and Cu-Ti solder cannot be prepared and shaped, provides a brazing Si 3 N 4 Ceramic boron-containing titanium-based amorphous solder and preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Component formula: the components and contents of the brazing filler metal are as follows: Zr: 20.0%; Ni: 20.0%; Cu: 20.0%; B: 0.2%; the rest is Ti.

[0028] Preparation:

[0029] (1) After pulverizing raw materials such as Ni, Cu, Ti, Zr and copper-boron alloy, weigh the raw materials on an electronic balance according to the above formula, wherein the purity of Cu, Ti and Ni is above 99.9%, and the purity of Zr reaches 99.99% %, the mass fraction of B in the copper-boron alloy is 13.45%;

[0030](2) Place the ingredients according to the above formula in the WS-2 type high vacuum Ar atmosphere protection non-consumable electric arc furnace. There are 5 copper crucibles in the electric arc furnace, and a piece of pure Ti sample is placed in one of the crucibles, and the remaining four The crucible can hold four ingredients of the same formula or different formulas at the same time;

[0031] (3) Before smelting, vacuumize the furnace to 10 -2 Pa, after flushing the f...

Embodiment 2

[0043] Component formula: the components and contents of the brazing filler metal are as follows: Zr: 20.0%; Ni: 25.0%; Cu: 15.0%; B: 0.2%; the rest is Ti.

[0044] Preparation method: same as the preparation method of Example 1.

[0045] The melting temperature range of the brazing filler metal is 1207 ~ 1216K, using the amorphous brazing filler metal to vacuum braze Si 3 N 4 The high-temperature bending strength of ceramic joints is: 134MPa (673K); 116MPa (773K); 88MPa (873K).

Embodiment 3

[0047] Component formula: The components and contents of the brazing filler metal are as follows: Zr: 20.0%; Ni: 20.0%; Cu: 20.0%; B: 0.1%; the rest is Ti.

[0048] Preparation method: same as the preparation method of Example 1.

[0049] The melting temperature range of the brazing filler metal is 1192-1208K, and the amorphous brazing filler metal is used for vacuum brazing Si 3 N 4 The high-temperature bending strength of ceramic joints is: 130MPa (673K); 101MPa (773K); 78MPa (873K).

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Abstract

The invention relates to braze welding Si3N4 ceramics containing the boron Ti-based amorphous solder and the preparation method thereof, and belongs to the brazing material in the field of amorphous state and metallurgy. The ingredients of the brazing material consist of the following according to the mass percent: Zr of 12.0-28.0 percent, Ni of 12.0-28.0 percent, Cu of 12.0-28.0 percent, and B of0.05-0.5 percent, and the remains is Ti. The melting scope of the brazing material ranges 1,150K to 1,250K, and the brazing temperature is from 1,273K to 1,373K. The Ti-Zr-Ni-Cu-B amorphous braze vacuum braze welding Si3N4 ceramics, which is produced by the rapid solidification technology, has superior high-temperature performance to Ag-Cu-Ti solder and Ti-Zr-Ni-Cu solder. The tie-in high-temperature bend strength reaches 145MPa under 673K DEG,108MPa under 773K DEG, and still 93MPa under 873K DEG.

Description

Technical field: [0001] The invention relates to a brazing Si 3 N 4 The invention relates to boron-containing titanium-based amorphous solder for ceramics and a preparation method thereof, in particular to a Ti-Zr-Ni-Cu-B high-temperature active amorphous solder and a preparation method thereof, belonging to brazing materials in the fields of amorphous state and metallurgy. Background technique: [0002] Si 3 N 4 Ceramic is a kind of promising engineering structural ceramic material, its main application fields are heat engine, wear-resistant parts and heat exchanger, etc. It is an important material for manufacturing new ceramic engines. Its research and development has aroused people's high attention. Due to the shortcomings of ceramics such as poor processability, low ductility and impact toughness, low thermal shock resistance, and difficulty in manufacturing parts with large dimensions and complex shapes, it is usually necessary to form a composite structure with me...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B37/00
Inventor 邹家生赵其章蒋志国赵宏权许志荣
Owner JIANGSU UNIV OF SCI & TECH
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