Autocatalytic Nickel Plating Electroless Ni Plated Alumina Ceramic Substrate PCB
Why Metallization is Necessary on the Surface of Ceramic
Substrates?
The ceramic substrate has better electrical function, thermal
conductivity and insulation after metallization.
What are the Methods of Metallization of Ceramic Substrates?
Ceramic substrate metallization is to firmly adhere a layer of metal film
on the surface of ceramic substrate to realize the welding between
ceramic and metal. There are many ceramic substrate metallization
processes such as Mo-Mn method, electroless nickel plating method,
silver firing method, and Direct Bonded Copper (DBC) method.
What is Electroless Nickel Plating Method?
The process flow of electroless nickel plating is shown in the picture
on the left.
1. Surface treatment: to purify and roughen the surface of the
ceramic substrate;
2. Sensitization: the process of evenly adsorbing a layer of SnCl2 on
the surface of the ceramic substrate;
3. Activation: immerse the sensitized ceramic substrate in the
activation solution to deposit a layer of Pd on its surface (forming a
catalyst layer that induces nickel deposition reaction);
4. Pre-plating: the process of soaking the ceramic substrate in the
pre-plating solution to form a thin and uniform metal nickel film on the
surface of the ceramic substrate, and cleaning off the excess
activation solution;
5. Final plating: form a uniform Ni-P alloy layer with a certain
thickness on the surface of the ceramic substrate;
6. Heat treatment: make the Ni-P alloy layer dense, increase the
degree of crystallization, and increase the bonding strength with the
substrate.
Where are Ceramic Circuit Boards Mainly Used?
Ceramic substrates have very broad application prospects in high-power LED industry, high-frequency electronic equipment, large-scale network
base stations, filter devices and other fields.
Jinghui is a professional manufacturer of metallized ceramic substrates. It is our goal to provide ideal solutions for customers' different application
requirements. Whether it is cost or engineering solutions, our goal is to find the most economical and suitable solution for our customers!
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