Molybdenum sheet composite ruthenium plating technology
Molybdenum is a kind of high temperature resistant material, but the surface of molybdenum material is easy to form oxide film, the oxide film can not play any protective effect on molybdenum, so molybdenum material is easy to produce strong oxidation under high temperature environment. In order to improve the heat resistance and electrical conductivity of molybdenum sheet surface, it is necessary to be coated on molybdenum sheet. Molybdenum sheet used in the field of electronic materials is usually coated with ruthenium to improve the conductivity, heat resistance, brazing performance of molybdenum sheet material, and reduce or prevent oxidation of the material. The existing molybdenum sheet ruthenium plating process usually requires multilayer electroless ruthenium plating or diffusion after electroplating, this molybdenum sheet direct ruthenium plating method often does not adhere firmly, long-term use is easy to peel off, short service life; And the process is more complicated, high cost, diffusion ruthenium time-consuming, long production cycle, low efficiency; In addition, the existing ruthenium plating process due to high temperature, due to the release of internal stress, resulting in large deformation of molybdenum sheet, thus increasing the rejection rate.
To solve this problem, we can pay attention to the following production steps: pre-treatment of molybdenum sheet, plating the first layer of ruthenium film coating on the surface of molybdenum sheet by electroless ruthenium plating method, ultrasonic cleaning of molybdenum sheet, placing molybdenum sheet into vacuum sputtering device, physical deposition of ruthenium on the surface of molybdenum sheet, plating the second layer of ruthenium film coating on the surface of molybdenum sheet, ultrasonic cleaning of molybdenum sheet, pretreatment before electroplating, Molybdenum sheet was electroplated with a third layer of ruthenium film.
This process can make the ruthenium film by electroless plating, sputtering and electroplating combined to complete, ruthenium film coating internal grain density, uniform distribution, and molybdenum sheet has a high bonding force, not easy to peel off, ruthenium film surface quality is good, stable comprehensive performance, long service life; In the process of ruthenium plating, the temperature is low and the deformation of molybdenum sheet is small, so the qualified rate of molybdenum sheet ruthenium plating is improved and the production cost is reduced.
Our company can produce molybdenum foil, molybdenum belt, molybdenum sheet, molybdenum plate, molybdenum rod, molybdenum wire, molybdenum crucible, molybdenum processing workpiece according to customer demand.
