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How to make zirconia ceramics combined with stainless steel?
Time: 2018-12-22   Writer: mingrui

How to make zirconia ceramics combined with stainless steel?


Zirconium oxide ceramics already have excellent properties. If combined with high-quality stainless steel materials, the combination of stainless steel and zirconia ceramics will be even better. However, the prerequisite is to properly match the stainless steel and zirconia ceramics.
Zirconia ceramics are favored by users due to their high toughness, high flexural strength, high wear resistance, excellent thermal insulation properties and thermal expansion coefficient. However, instead of using zirconia ceramics directly, it is necessary to sinter them with stainless steel to form a stainless steel and zirconia ceramic composite.

In actual production, the required materials must be prepared. In addition to stainless steel parts and zirconia ceramic parts, molybdenum foil and nickel foil are required as auxiliary materials. Next, a nickel metal layer is deposited on the surface of the zirconia ceramic member, and the process is simple as long as the zirconia ceramic, the molybdenum foil, the nickel foil, and the stainless steel member are placed together in a joint mold.
In this way, the molybdenum foil and the nickel foil are sandwiched between the zirconia ceramic member and the stainless steel member, and the molybdenum foil is adjacent to the nickel metal layer on the zirconia ceramic member, and the nickel foil is adjacent to the stainless steel member. Subsequently, the joint mold is placed in a hot press sintering furnace, and the zirconia ceramic parts, the molybdenum foil, the nickel foil and the stainless steel parts are solid-phase diffusion-bonded under a protective atmosphere, thereby obtaining a stainless steel and zirconia ceramic composite part.

After the workpiece is cooled, it can be taken out from the hot press sintering furnace to obtain the previously described stainless steel and zirconia ceramic composite. Since the melting point of zirconia is higher than the melting point of stainless steel, stainless steel is generally melted prior to zirconia, and as long as it is operated as described above, the two can be well combined.
 
Since stainless steel and zirconia ceramics are very unique materials and have many superior properties, the combination of the two is bound to be more excellent, to meet more application requirements and to expand the scope of application.


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