Metallized Ceramic Ring

Combining ceramic materials with metal materials can complement each other in terms of performance. However, the biggest difficulty in the sealing process of the two is that the thermal expansion coefficients of ceramics and metals are quite different, and the wetting effect of metal on the ceramic surface is relatively poor. The two cannot achieve high-quality direct connection, so it is first necessary to sinter or deposit a metal film on the ceramic. This process is the metallization of the ceramic.

The metallization method we use most is the Mo-Mn formula, which is to apply a paste mixture of pure metal powder (Mo, Mn) and metal oxides to the ceramic surface, and then heat it at high temperature in a furnace to form a metal layer. Usually, for ceramic materials after metallization, most processes will perform a secondary metallization treatment on the metallization layer, that is, Ni plating treatment. Ni plating is to improve the fluidity of the subsequent solder on the metallization layer and prevent the solder from corroding the metallization layer. It can also cover the porous Mo layer during the first metallization process to prevent the metallization layer from being damaged after the sealing is completed.

We mainly ensure the quality of the metallized ceramic ring from two aspects: First, production process control. We conduct full product inspection at every link to prevent inferior products from being circulated to the next process. The second is finished product appearance inspection. We ensure the appearance quality and integrity of metallized ceramic rings by using methods such as visual inspection, microscopic inspection, optical measurement and surface roughness testing to ensure that the product meets customer needs and expectations.