Ceramic and metal field self extending combustion connecting method

A technology of self-propagating combustion and connection method, which is applied to the field of laying ceramic protective layers on the high-temperature wear surface of metal parts, which can solve the problems of complex process, low connection strength, and low density of ceramic layers.

Inactive Publication Date: 2004-02-18
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The connection method of ceramics and metals developed in recent years is to use thermal spraying method to coat ceramic materials on the metal surface, or use SHS method to burn and bond, or metallize the ceramic surface and then vacuum braze with metal materials. The main disadvantages are complex process, low connection strength or low density of the resulting ceramic layer

Method used

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  • Ceramic and metal field self extending combustion connecting method
  • Ceramic and metal field self extending combustion connecting method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0017] Ceramic material Al 2 o 3 Plate, thickness 1.5mm; metal material 20 steel, thickness 12mm; mixed filler components: aluminum powder 35%, iron oxide red 45%, silicon oxide 10%, the rest is sodium borate and calcium fluoride; ceramic nickel plating layer thickness 5μm . Connect according to the method described in the manual, the voltage is 300V, and the pressure is 5Mpa. The shear strength of ceramic and metal connection is 29.5Mpa.

Embodiment approach 2

[0019] Ceramic material ZrO 2 Plate, thickness 2.0mm; metal material 13CrMo44 steel, thickness 8mm; mixed filler components: aluminum powder 40%, iron oxide red 35%, chromium oxide 10%, the rest is silicon oxide and calcium fluoride; ceramic nickel plating layer thickness 3μm . Connect according to the method described in the manual, the voltage is 500V, and the pressure is 3Mpa. The shear strength of ceramic and metal connection is 32Mpa.

Embodiment approach 3

[0021] Ceramic material TiC plate, thickness 1.0mm; metal material stainless steel, thickness 6mm; mixed filler components: titanium powder 40%, iron oxide red 25%, chromium oxide 10%, graphite powder 25%, ceramic nickel plating layer thickness 3μm. According to the method described in the manual, the connection voltage is 300V, the pressure is 5Mpa, and the shear strength of ceramic and metal connection is 28Mpa.

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Abstract

A field self-progressing combustion method for attaching a protecting ceramic layer onto high-temp abrasive surface of metal features that the self combustion at the interface between ceramic and metal can generate local high temp to sinter the interface, an external electrostatic field can help the immigration and diffusion of ions, and the nickel infiltration on the interface of ceramic can fill the interface gap. Its advantages are high adhesion and low cost.

Description

technical field [0001] The field-induced self-propagating combustion connection method of ceramics and metal materials proposed by the invention belongs to the technical field of ceramics and metal connections, and in particular relates to the technology of laying a ceramic protective layer on the high-temperature wear surface of metal parts. Background of the invention [0002] The connection method of ceramics and metals developed in recent years is to use thermal spraying method to coat ceramic materials on the metal surface, or use SHS method to burn and bond, or metallize the ceramic surface and then vacuum braze with metal materials. The main disadvantages are complex process, low connection strength or low density of the resulting ceramic layer. Contents of the invention [0003] In order to overcome the deficiencies in the above-mentioned technical background, the patent of the present invention proposes a new efficient and economical method for connecting ceramics...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/65C04B37/02
Inventor 孟庆森
Owner TAIYUAN UNIV OF TECH
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