Glazed Ceramic Insulator for Vacuum Relays

Glazed Ceramic Insulator for Vacuum Relays

About Forming Method of metallised ceramics

There are mainly Dry Pressing, Hot Pressing, Isostatic Pressing, and Ceramic Injection Molding (CIM), each of which has its own advantages and disadvantages. We will choose the most suitable forming method on the basis of saving costs and ensuring quality.

About Finishing Process

In order to achieve the precision of the product, most ceramic structural parts need further finishing treatment after the sintering process. The main finishing processes we use are machining (lapping, polishing…) and glazing.

About Metallization Process

After the ceramic surface is metallized, it has both the characteristics of ceramics and the properties of metal.

Introduction to Mo-Mn Method

Metallized ceramic structural parts are widely used in the fields of new energy vehicles, electronics, semiconductor packaging and IGBT modules. The metallization method of ceramic structural parts is mainly to sinter a layer of metal film on the ceramic surface to achieve the purpose of ceramic metallization.

In the field of ceramic metallization, the most widely used method is the molybdenum-manganese method. The Mo-Mn method is based on the refractory metal powder Mo, and then adds a small amount of low-melting Mn metallization formula, adds a binder and coats the ceramic surface, and then sinters to form a metallization layer.

The following is the general process of the Mo-Mn method applied to the surface of the ceramic structural parts.

Advantages of Mo-Mn Method

1. The process is mature and stable.
2. High bonding strength, especially suitable for applications under harsh mechanical and climatic conditions.
3. It can be repaired many times without damaging the metallization layer.
4. The requirements for solder, metallization paste formula and sintering atmosphere are not very strict, and the process is easy to master.