Can coatings prevent sublimation?

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SUMMARY

Coatings can slow the sublimation of steel, but their effectiveness depends on the type of coating used. The discussion highlights that iron may migrate into the coating and subsequently evaporate, indicating that any coating applied will be sacrificial. Suitable materials for sacrificial coatings include copper, zinc, polymers, and paints. The sublimation process primarily affects only the existing surface of the steel.

PREREQUISITES
  • Understanding of sublimation processes in materials science
  • Knowledge of sacrificial coatings and their applications
  • Familiarity with materials such as copper, zinc, and polymers
  • Basic principles of evaporation in solid materials
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  • Research the properties of copper and zinc as sacrificial coatings for steel
  • Explore the effectiveness of various polymers in preventing sublimation
  • Investigate the sublimation rates of different materials in vacuum conditions
  • Learn about advanced coating techniques for enhancing material longevity
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Materials scientists, engineers working with metal coatings, and professionals involved in the preservation of steel structures will benefit from this discussion.

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Question for materials scientists: All solids evaporate (or sublimate) over some time, even steel. Could the sublimation of steel over time be prevented or slowed with a coating?
EDIT: Do diamonds themselves sublimate in a vacuum?
 
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Mgt3 said:
Could the sublimation of steel over time be prevented or slowed with a coating?
Yes, but it will depend on the coating, the iron may migrate and go into solution in the coating, then evaporate from the coating.

Only the existing surface sublimes, any coating will be sacrificial.
 
Baluncore said:
Yes, but it will depend on the coating, the iron may migrate and go into solution in the coating, then evaporate from the coating.

Only the existing surface sublimes, any coating will be sacrificial.

What could be used as a sacrificial coating for iron or steel?
 
Mgt3 said:
What could be used as a sacrificial coating for iron or steel?
Copper, zinc, a polymer or a paint.
 

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