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Titanium group high temperature amorphous solder of hard solder Si*N* ceramic and method for producing the same

A technology of ceramics and brazing materials, which is applied in the field of brazing materials, titanium-based high-temperature amorphous brazing filler metals and its preparation, Ti-Zr-Ni-Cu high-temperature active amorphous brazing filler metals and its preparation fields, and can solve the problems of poor high-temperature performance, Cu- Problems such as the inability of Ti solder to be prepared and formed, achieve the effect of good toughness, flat sides and smooth surface

Inactive Publication Date: 2008-05-07
JIANGSU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] 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 Preparation method of titanium-based high-temperature amorphous solder for ceramics

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Component formula: the components and contents of the brazing filler metal are as follows: Ti: 40.0%; Zr: 25.0%; Ni: 15.0%; Cu: 20%.

[0033] Preparation:

[0034] (1) After crushing the nickel plate (Ni), electrolytic copper block (Cu), sponge titanium (Ti), and sponge zirconium (Zr) raw materials, weigh the raw materials on the electronic balance according to the above formula, the purity of Cu, Ti and Ni All above 99.9%, the purity of Zr reaches 99.99%,;

[0035] (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;

[0036] (3) Before smelting, vacuumize the furnace to 10 -2 Pa, after flushing the furnace with argon for 3-4 times,...

Embodiment 2

[0048] Component formula: the components and contents of the brazing filler metal are as follows: Ti: 30.0%; Zr: 25.0%; Ni: 15.0%; Cu: 30.0%.

[0049] Preparation method: same as the preparation method of Example 1.

[0050] The melting temperature range of the solder is 1136 ~ 1157K, brazing Si 3 N 4 The four-point bending strength of the ceramic joint at room temperature is 106MPa; at 673K, the high-temperature bending strength of the joint is 75MPa.

Embodiment 3

[0052] Component formula: the components and contents of the brazing filler metal are as follows: Ti: 35.0%; Zr: 25.0%; Ni: 15.0%; Cu: 25.0%.

[0053] Preparation method: same as the preparation method of Example 1.

[0054] The melting temperature range of the solder is 1129 ~ 1165K, brazing Si 3 N 4 The four-point bending strength of the ceramic joint joint is 138MPa; when the temperature is 673K, the high-temperature bending strength of the joint is 96MPa.

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Abstract

The invention discloses braze welding Si3N4 porcelain Ti base high temperature non-crystalline brazing filler metal and the preparing method thereof, in particular to Ti-Zr-Ni-Cu high temperature active non-crystalline brazing filler metal and the preparing method thereof, and pertains to the braze welding material of non-crystalline state and metallurgy field. The brazing filler metal has the ingredients and the contents (matching according to the quality percentage) as follows: Ti of 30.0 to 45.0 percent, Zr of 22.0 to 26.0 percent, Ni of 12.0 to 16.0 percent, and Cu of 15.0 to 30.0 percent. The melting temperature range of the brazing filler metal is 1100 to 1170 K; the braze welding temperature is 1223 to 1323 K. Compared with the brazing filler metal prepared by normal melting technique with the same component, the Ti-Zr-Ni-Cu high temperature active non-crystalline brazing filler metal leaf obtained by the rapid solidifying technique has favorable wetting property and tie-in dynam performance; adopting the non-crystalline brazing filler metal to vacuum braze weld Si3N4 porcelain, the tie-in chamber temperature bending intensity is 160 MPa; when the temperature is 673 K, the tie-in high temperature bending intensity is 126 MPa; when the temperature is 773 K, the high temperature bending intensity is 83 MPa.

Description

Technical field: [0001] The invention relates to a brazing Si 3 N 4 The invention relates to a ceramic titanium-based high-temperature amorphous solder and a preparation method thereof, in particular to a Ti-Zr-Ni-Cu 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 metal m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B37/00
Inventor 邹家生赵其章许志荣赵宏权蒋志国
Owner JIANGSU UNIV OF SCI & TECH
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