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Applications Example

Merits of Ultrasonic Wave Processing 3
 
As a replacement of silicon, SiC (silicon carbide) is attracting attention these days as a material for the next-generation power devices to be used in an inverter module for hybrid automobiles or a converter for a solar power generation system. SiC provides better performance in power consumption, heat resistance, and operation speed compared with silicon, so that it is expected to further reduce the size and weight of devices.


Process Example
When processing an SiC workpiece using a conventional electroformed blade, the blade tends to be glazed because this material is very hard. Such blade condition may cause chipping or cracking of the wafer or blade breakage.
Use of ultrasonic waves in dicing lowers cutting resistance, which not only realizes stable processing of this hard-to-process material but also is effective to prevent blade glazing.

Photo 1:
Surface processed by ultrasonic waves

超音波ダイシング加工表面
Photo 2:
Blade condition after processing
(SEM image after processing 104 lines)
加工後のブレード状態
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