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How do you stop a ceramic cooktop from staining? 

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Even though the Y2O3 coating tends to become detached from the sputtered ceramic after one heating cycle, modifications in the surface chemistry of the ceramic continues to provide protection from further attack.
For this reason, the low corrosion level in a ceramic-on-ceramic coupling could be advantageous.
The main reason for the damage is the relatively weak ceramic-ceramic interface within the ceramic clusters.
We present the case as a warning that fracture of a ceramic component should be revised to another ceramic-on-ceramic articulation in order to minimise the risk of further catastrophic wear.
This, together with results from sequential runs with the same ceramic sample, suggests that the vacancies in the ceramic materials are intrinsic to their synthesis and do not result from radiation damage, as has been suggested.
Among all the five test solutions, Coffee showed the maximum staining of the ceramic whereas maximum surface roughness was shown by the Duceram Kiss (1.48 μm) by Orange Juice which could be due to its high titratable acidity.

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