Connection method for carbon steel and zirconium oxide ceramic and connecting piece manufactured thereby

Abstract

The invention provides a connection method for carbon steel and zirconium oxide ceramic. In the method, pulse current is mainly applied to carbon steel, zirconium oxide ceramic and a titanium foil active intermediate layer to perform discharge plasma connection by using discharge plasma sintering equipment; and the discharge plasma connection has the following technological parameters that: the axial pressure is 10-50MPa; the temperature raise rate is 50-600 DGE C / min; the connection temperature is 800-1,100 DEG C; the temperature keeping time is 10-50 minutes; and vacuum degree in a furnace chamber is 6-10Pa. The invention also provides a connecting piece for the carbon steel and the zirconium oxide ceramic manufactured by the connection method.

Description

technical field [0001] The invention relates to a connection method of metal and ceramics and a prepared connection piece, in particular to a connection method of carbon steel and zirconia ceramics and the prepared connection piece. Background technique [0002] Carbon steel is widely used in the manufacture of engineering structures (such as ships, engines, high-pressure vessels, etc.) and mechanical parts (such as gears, shafts, etc.). However, carbon steel has disadvantages such as poor wear resistance, low hardness, low thermal shock resistance and high temperature corrosion resistance, and it is difficult to meet the further requirements of modern production technology for the comprehensive performance of materials. Zirconia ceramics have the advantages of high hardness, high temperature corrosion resistance, wear resistance, and thermal shock resistance. Carbon steel and zirconia are connected together to form a composite structure, which is of great significance for ...

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Problems solved by technology

However, these methods have many shortcomings: it is difficult to obtain joints with high bonding strength; the requirements for the cleanliness of the metal surface and the vacuum degree of the equipment are high; the requirements for solid phase diffusion connection and instantaneous liquid phase connection are relatively high, and the holding time is long. The connection between the two is time-consuming and energy-consuming; fusion welding is prone to cracks; although the connection temperature of brazing is low, because the melting point of the solder is generally low, it is difficult to make joints that can be used at high temperatures by brazing

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