Ternary lamellar ceramic titanium silicon carbide and metallic nickel diffusion bonding method

A ternary layered, diffusion connection technology, applied in the field of ceramic and metal connection, can solve the problem of few ceramic research, achieve good mechanical properties, expand the scope of application, and achieve good performance.

Inactive Publication Date: 2017-05-24
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, the connection Ti 3 SiC 2 Very little research has been done on ceramics

Method used

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  • Ternary lamellar ceramic titanium silicon carbide and metallic nickel diffusion bonding method
  • Ternary lamellar ceramic titanium silicon carbide and metallic nickel diffusion bonding method
  • Ternary lamellar ceramic titanium silicon carbide and metallic nickel diffusion bonding method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Embodiment 1: with Ti 3 SiC 2 Ceramic and metallic nickel for surface treatment, Ti 3 SiC 2 Ceramic and metallic nickel are ground, polished, and ultrasonically cleaned. Then the processed Ti 3 SiC 2 Ceramic and metal nickel are installed in a hot-press furnace and vacuumized; when the vacuum reaches 5×10 -2 Heating starts at Pa. At a temperature of 800°C, a pressure of 10MPa, and constant pressure for 90min, Ni and Ti were diffusely bonded. 3 SiC 2 ceramics. The loading rate is 5MPa / min. After the connection is completed, the temperature of the hot-press furnace is slowly lowered under the original vacuum condition, first to 400°C at a rate of 5°C / min, and then to 200°C at a rate of 10°C / min, then stop vacuuming and remove the pressure. The microscopic morphology of the interface after connection was observed with a scanning electron microscope, and the interface was well connected without pores, cracks or residual welding lines.

Embodiment 2

[0014] Embodiment 2: with Ti 3 SiC 2 Ceramic and metallic nickel for surface treatment, Ti 3 SiC 2 Ceramic and metallic nickel are ground, polished, and ultrasonically cleaned. Then the processed Ti 3 SiC 2 Ceramic and metal nickel are installed in a hot-press furnace and vacuumized; when the vacuum reaches 5×10 -2 Heating starts at Pa. At a temperature of 900°C, a pressure of 20 MPa, and constant pressure for 30 minutes, Ni and Ti were diffusely bonded. 3 SiC 2 ceramics. The loading rate is 5MPa / min. After the connection is completed, the temperature of the hot-press furnace is slowly lowered under the original vacuum condition, first to 400°C at a rate of 5°C / min, and then to 200°C at a rate of 10°C / min, then stop vacuuming and remove the pressure. The microscopic morphology of the interface after connection was observed with a scanning electron microscope, and the interface was well connected without pores, cracks or residual welding lines. The joint shear streng...

Embodiment 3

[0015] Embodiment 3: test piece is carried out surface treatment, Ti 3 SiC 2 Ceramic and metallic nickel are ground, polished, and ultrasonically cleaned. Then install the processed weldment in a hot-press furnace and vacuumize it; when the vacuum degree reaches 5×10 -2 Heating starts at Pa. At a temperature of 1000°C, a pressure of 20MPa, and constant pressure for 10 minutes, Ni and Ti were diffusely bonded. 3 SiC 2 ceramics. The loading rate is 5MPa / min. After the connection is completed, the temperature of the hot-press furnace is slowly lowered under the original vacuum condition, first to 400°C at a rate of 5°C / min, and then to 200°C at a rate of 10°C / min, then stop vacuuming and remove the pressure. The microscopic morphology of the interface after connection was observed with a scanning electron microscope, and the interface was well connected without pores, cracks or residual welding lines. The joint shear strength reaches 121MPa.

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Abstract

The invention discloses a ternary lamellar ceramic titanium silicon carbide and metallic nickel diffusion bonding method and belongs to the technical field of ceramic and metal bonding. The method comprises the steps that firstly, surface treatment is conducted on ternary lamellar ceramic and metallic nickel, and then the ternary lamellar ceramic and the metallic nickel are grinded, polished and ultrasonically cleaned; then, the ternary lamellar ceramic and the metallic nickel are installed in a hot-pressing furnace, and the hot-pressing furnace is vacuumized; when the vacuum degree of the hot-pressing furnace is up to 5*10-2 Pa, heating begins, constant-pressure heat preservation is performed at the temperature of 800-1100 DEG C and under the pressure of 6-20 MPa, so that diffusion bonding is conducted on the ternary lamellar ceramic and the metallic nickel; after bonding is completed, cooling is performed under the original vacuum condition to reach 200 DEG C, and then pressure relief is performed. The shear strength of a diffusion bonding joint obtained by adopting the method can be up to 121 MPa and is approximate to the shear strength of Ti3SiC2 ceramic, the actual application demand can be met, and accordingly the application range of ternary lamellar ceramic titanium silicon carbide is widened.

Description

Technical field: [0001] The invention belongs to the technical field of ceramic and metal connection, in particular to a diffusion connection method of ternary layered ceramic titanium silicide carbon and metallic nickel. Background technique: [0002] Ti 3 SiC 2 It is a new type of ternary layered ceramic material. Research in the Journal of the American Ceramic Society 79, 1953 (1996) shows that it combines many advantages of ceramics and metals, with low density, high modulus, high strength, high electrical conductivity and thermal conductivity. And the characteristics of easy processing, so Ti 3 SiC 2 Ceramics are a new type of structural / functional integrated material that is promising to be used in high-tech fields such as aviation, aerospace, nuclear industry, and electronic information, and is especially suitable as a high-temperature structural material. Although to Ti 3 SiC 2 The synthesis and properties of ceramics have been studied extensively, but their p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B37/02
CPCC04B37/021C04B2237/52
Inventor 尹孝辉高银银国礼杰包全和张向忠
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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