Connected piece of carbon steel and zirconia ceramic
A technology of zirconia ceramics and connectors, which is applied in the field of connectors between carbon steel and zirconia ceramics. It can solve the problems of long heat preservation time, difficult joints, surface cleanliness of metal parts and high vacuum degree of equipment, and achieve vacuum degree. The effect of low and high shear strength
Inactive Publication Date: 2016-07-06
JIUZUNCHENG NETWORK TECH SHENZHEN CO LTD
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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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[0028] see figure 1 , the method for connecting carbon steel and zirconia ceramics in a preferred embodiment of the present invention is mainly accomplished by using a discharge plasma sintering device 10, and the method mainly includes the following steps:
[0029] (1) Provide a carbon steel part 20 to be connected, a zirconia ceramic part 30 and an active intermediate layer 40 . The active intermediate layer 40 is titanium foil with a thickness of approximately 0.1-0.5 mm, preferably 0.2-0.3 mm.
[0030] (2) Grinding and cleaning the active intermediate layer 40 and the surfaces to be connected of the carbon steel part 20 and the zirconia ceramic part 30, and drying them. In this embodiment, 400-800 mesh metallographic sandpaper can be used to polish the active intermediate layer 40, the carbon steel part 20 and the zirconia ceramic part 30; then use dilute hydrochloric acid or dilute sulfuric acid solution to clean; rinse with water after acid cleaning and blow dry . Her...
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Abstract
The invention provides a connected piece of carbon steel and zirconia ceramic. The connected piece comprises a carbon steel member, a zirconia ceramic member, and a connection part for connecting the carbon steel member and the zirconia ceramic member. The connection part comprises a first transition layer, a titanium layer, and a second transition layer. The first transition layer is arranged between the zirconia ceramic member and the titanium layer, and is composed of solid solution of titanium and iron and titanium-iron intermetallic compounds. The second transition layer is mainly composed of titanium-oxygen compounds and titanium-zirconium compounds. The connected piece has good shearing strength.
Description
technical field [0001] The invention relates to a connecting piece between metal and ceramics, in particular to a connecting piece between carbon steel and zirconia ceramics. 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 the application of carbon steel in high temperature enviro...
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IPC IPC(8): C04B37/02
CPCC04B37/025C04B37/026C04B2237/06C04B2237/12C04B2237/348C04B2237/406
Inventor 不公告发明人
Owner JIUZUNCHENG NETWORK TECH SHENZHEN CO LTD