Letter 35005

Adhesion/Bond strength of hard chrome deposits in various type of bath [India] 

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Do we have any comparative data study to check the Bond strength of Hard chrome deposit on M.S and C.I,in different processes like conventional/SRHS/and organic additives used chemistry.

HARISH G [name deleted for privacy]
- AHMEDABAD, GUJARAT, INDIA

Long ago I remember having read an article stating a maximum of 20,000 psi of bond strenght for hard chrome over steel. Adhesion is more a function of surface preparation, internal stress and external work done to the plate than of the chemistry itself, with the exception of high alloy steels such as stainless, where the fluoride chemistry is better.

Guillermo Marrufo
Monterrey, NL, Mexico

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