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Research on Plasma Cleaning of Multilayer Ceramic Cases of Ceramic Plasma Treatment Watch Cases

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ceramic,the,and,of,cleaning,plasma,on,surface,it

Published on:

12 May,2021

Research on Plasma Cleaning of Multilayer Ceramic Case of Watch Case by Ceramic Plasma Treatment:
        The multilayer ceramic shell is made of multilayer metalized ceramics, base and metal parts brazed with Ag72Cu28 solder. Before the plating process, various contaminations will inevitably form on the surface of the shell, including fine dust, solid particles, organic matter, etc. At the same time, due to natural oxidation, there is also an oxide layer. The surface of the plated parts must be cleaned before plating, otherwise it will affect the bonding force of the plating layer and the substrate, causing the plating layer to peel and blisters.

Plasma treatment Plasma cleaning

Ceramic plasma treatment case
        In order to remove such contaminants, organic solvents such as toluene, acetone, alcohol, etc. are used for ultrasonic cleaning, but this method does not clean thoroughly on the one hand, which may easily cause coating defects. On the other hand, it increases manufacturing costs and causes environmental problems. Because of its good uniformity, repeatability, controllability, energy saving and environmental protection, plasma cleaning has been popularized and applied in the packaging field. Plasma cleaning using O2 as the cleaning gas can effectively remove organic matter and particle contamination on the surface of the multilayer ceramic shell.
        Plasma cleaning of Ag72Cu28 solder with O2 as cleaning gas has remarkable operability. Before using Ag72Cu28 solder to braze the surface of the shell with Ni and Au, use O2 as a cleaning gas for plasma cleaning, which can remove organic pollutants and improve the quality of the coating.
        This is extremely important for improving packaging quality and parts reliability, and at the same time, it also plays a very good demonstration effect on energy saving and reduction. After treatment under different conditions, the change of the solder on the multilayer ceramic shell, and the surface of the sample after plasma cleaning was plated with nickel and gold to test the bonding force between the plating and the solder. Get good process parameters for plasma cleaning. It provides an experimental basis and theoretical basis for the improvement and simplification of similar product processes, and the reduction of costs. At the same time, it also has a great positive effect on saving and reducing emissions.

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