However, if the samples are light soaked for too long at these low temperatures, hydrogen can slowly passivate the B-O defects , therefore increasing the lifetime of the wafers, leading to a recovery in performance.
This suggests that the hydrogenation process needs to be further optimised so as to better passivate the defects caused by contamination introduced during production.
per the ASTM A967 specification, as well as many other industry and customer-specific standards.
Now the Permapass trivalent passivates
and Ensael top coats offer the same combination of outstanding appearance and improved corrosion resistance
For some time Scholetter has been providing a unique 'full blue trivalent passivate
, Slotopass ZN20, with the extraordinary ability to meet 48 hours to white rust (DIN 50021--SS).
It used to be thought that the small amount of moisture retained in a passivate
could cause adhesion failure during stoving, but it is now acknowledged that the moisture combined in the passivate
is not trouble, provided the components are properly dried of surface water.
Trivalent chromium passivates
for zinc and zinc alloys in clear, colour and black.
The inertness of these liners is due to a new deactivation process that passivates
the liner and packing so that they are inert to a variety of reactive analytes.
Featuring an increased chrome-to-iron ratio and a chemically-bonded oxide surface layer, this stress free process deeply passivates
and improves the corrosion-resistance of stainless steel.