Autocatalytic Coatings & Technology

Stapleton Technologies Inc.

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SPCO Device with metalized gate pad at the top right and air gap trench on the edge of drain, lower left.

Alkaline Zincate Pretreatment

This process uses a double zincate chemistry that deposit zinc on the aluminum pads and then removes it and re-deposits a second thinner layer of zinc.  This technique reduces the amount of zinc on the surface the second time  which enhances adhesion by reducing the zinc trapped at the interface.  Zinc that is trapped at the interface produces a brittle interface and reduced adhesion

Another important reason for using alkaline zincate is the ability to process pure aluminum.  Pure aluminum has less electrical resistance and is used commonly in higher performance devices.  Alkaline zincate is capable of oxidizing the pure aluminum surface and depositing zinc whereas the Acid zincate is far less aggressive to the passive aluminum surface and deposits zinc at a slower rate.

Benefits

· Improved Adhesion on pure Aluminum

· Increased removal of Aluminum on Pad

· Simple Operations and Controls

Phone: 562-437-0541

Fax: 562-437-8632

E-mail: info@stapletontech.com

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