MadSci Network: Engineering

Re: Rust theory has it cha

Date: Wed May 10 19:02:54 2000
Posted By: Bob Gibilisco, Staff, Process Engineering, Retired
Area of science: Engineering
ID: 956796581.Eg

Allowing rust to form on the surface of Iron bearing metal will render the
surface non-reactive. The rust (FeO2) will penetrate approximately 0.010"
forming a barrier between the parent metal and the environment. This is why
sunken ships are preserved for long periods of time.
It is not recommended to use this process on moving parts since new surfaces
will be exposed continuously.
Unfortunately, I do not have the statistics on how extensive this process is
used in the construction industry. Possibly another Mad Scientist may
provide more information

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