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#292 Plating on Ceramics

Category : Electroplating
May19, 2017

Industrial materials used as non-conducting substances include plastics, rubbers, and ceramics. This lesson introduces plating on ceramics.
Ceramics are used for electrical components and semiconductor parts for its superior electrical insulation, high frequency characteristics, heat resistance, thermal conductivity and more. However, to use ceramics in electrical applications, a part of the ceramics must be metalized in order to allow formation of necessary electrodes and circuits.
Ceramics can be metalized by various methods from metal deposition and sputtering to a baking process using silver paste. Considering the reliability in terms of adhesion and precision, it is best to adopt the electroplating method.

The common procedure is as follows:

Degreasing → Surface Conditioning → Etching → Catalyzing → 
Electroless Plating
 → Electroplating

As you can see, the ceramic plating process is basically same as the plastic plating process. The difference here is the type of solution used. [Table] lists the purposes and applications of plating used for electrical components.

[Table] Purposes and applications of plating on ceramics
PurposesTypes of ceramicsApplications
Board circuit
formation
Alumina ceramics
High-purity alumina ceramics
High-purity alumina nitride ceramics
Silicon carbide ceramics
Zinc oxide ceramics
Hybrid IC, power module board, microstrip line, thermal printer head, simplified package, etc.
Electrode
formation
PZT (Pb-Zr-Ti) ceramics
Barium titanate ceramics
Piezoelectric devices, chip capacitors, ultrasonic motors, ink jet printers, electrodes utilizing dielectric and piezoelectric effects.
JointSilicon nitride ceramics
Titanium nitride ceramics
Zirconia ceramics
Joining ceramic and metal or glass materials (soldering or brazing)

fig1

MISUMI USA eCatalog