Letter 42033

Chromium Mirror Coating Parameters [India] 

August 26, 2006

We are exploring the production of Automative Mirror coating by Chromium Sputtering
onto glass. We are getting coating of good reflectivity but it can be easily scratched.
What may be causes for this?

What are the typical process parameters? What should be the DC voltage and chamber pressure? Also, what is the requirement for substrate glass cleaning? Should it
be only cleaned with deminineralized water or by organic solvents? Is ultrasound
cleaning necessary?

Thanks,

Dr. Sunil V. Gokhale

Sunil Gokhale
Advanced Process Technology Pvt. Ltd. - Pune, India

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