Posted by Gordon England (62.252.0.12) on 10:10:57 11/08/05
In Reply to:Please help me measure hardness posted by Pham Vinh
: Hello everybody,
: I am doing research on CrN coatings. Unfortunately, the coating is very rough so I can not measure hardness by Vickers. Someone suggests to polish samples before carrying out measuring hardness, but I am not sure whether this method is correct or not.
: I would like to receive your advices.
: Thank you so much.
: Pham Vinh
It is normal and necessary to prepare the surface to a good flat finish in order to measure the hardness impression via the microscope. Generally lighter testing loads (smaller impressions) require better finishing.
What is the thickness of your coatings?
Regards Gordon
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