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A kind of co-ti-nb series high temperature solder

A co-ti-nb, high temperature solder technology, applied in welding/cutting media/materials, welding media, metal processing equipment, etc., can solve problems such as low strength

Inactive Publication Date: 2015-10-28
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims to solve the problem of low strength of high-temperature structural ceramic joints brazed by traditional brazing filler metals in high-temperature environments, and provides a Co-Ti-Nb series high-temperature brazing filler metal

Method used

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  • A kind of co-ti-nb series high temperature solder
  • A kind of co-ti-nb series high temperature solder
  • A kind of co-ti-nb series high temperature solder

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Experimental program
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specific Embodiment approach 1

[0015] Embodiment 1: In this embodiment, a Co—Ti—Nb based high-temperature solder is made of 8.5 to 45 parts of niobium, 33 to 50 parts of cobalt and 22 to 41.5 parts of titanium in terms of mass parts.

[0016] This embodiment is based on Co-50Ti (at%), adding Nb element capable of infinite solid solution with active element Ti. The addition of the active element Nb, on the one hand, improves the activity of the Ti element, on the other hand, reduces the melting point of the brazing filler metal, and improves the strength of the high-temperature structural ceramic joint brazed with the brazing filler metal in a high-temperature environment.

specific Embodiment approach 2

[0017] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that the Co-Ti-Nb based high-temperature active solder is made of 16.2 parts by mass of niobium, 46.2 parts of cobalt and 37.6 parts of titanium . Others are the same as the first embodiment.

specific Embodiment approach 3

[0018] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is that: the Co-Ti-Nb series high-temperature active solder is composed of 23.5 parts by mass of niobium, 42.2 parts of cobalt and 34.3 parts of titanium production. Others are the same as those in Embodiment 1 or 2.

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Abstract

The invention relates to a brazing material and in particular relates to Co-Ti-Nb-based high-temperature brazing filler metal. Aiming at solving the problem that the strength of a high-temperature structural ceramic joint brazed by using conventional brazing filler metal is low in a high-temperature environment, the invention provides the Co-Ti-Nb-based high-temperature brazing filler metal. The Co-Ti-Nb-based high-temperature brazing filler metal provided by the invention is produced from the following components in parts by weight: 8.5-45 parts of Nb, 33-50 parts of Co and 22-41.5 parts of Ti. According to the Co-Ti-Nb-based high-temperature brazing filler metal, based on Co-50 Ti (at %), an element Nb which can be infinitely solid melted with an active element Ti is added. By adding the active element Nb, on the one hand, the activity of the element Ti is improved, and on the other hand, the melting point of the brazing filler metal is reduced, and the strength of the high-temperature structural ceramic joint brazed by using the brazing filler metal in the high-temperature environment is enhanced. The Co-Ti-Nb-based high-temperature brazing filler metal is applied to the field of brazing.

Description

technical field [0001] The present invention relates to a brazing material. Background technique [0002] As a new type of structural material, structural ceramics are widely used in national defense, energy, aerospace, machinery, petrochemical, metallurgy, electronics, etc. And other industries are increasingly showing broad application prospects, which have attracted the attention of industrialized countries, and have invested a lot of manpower and material resources in research. [0003] Due to the poor processing performance of ceramic materials, low ductility and toughness, weak thermal shock resistance, and difficulty in manufacturing parts with large sizes and complex shapes, it is usually necessary to form a composite structure with metal materials for application or through the connection of ceramics themselves. Manufacture of complex components. Therefore, solving the connection problem of ceramic / ceramic and ceramic / metal is one of the key technologies that must...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/30B23K35/40
Inventor 张杰章强刘春凤贺艳明巫向阳
Owner HARBIN INST OF TECH