Can coatings prevent sublimation?

In summary, the conversation discusses the possibility of preventing or slowing down the sublimation of steel over time with a coating. It is mentioned that the effectiveness of the coating may depend on its ability to prevent iron migration and evaporation. It is also noted that only the existing surface of the steel sublimes and that a sacrificial coating, such as copper, zinc, polymer, or paint, could potentially be used.
  • #1
Mgt3
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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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  • #2
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.
 
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  • #3
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?
 
  • #4
Mgt3 said:
What could be used as a sacrificial coating for iron or steel?
Copper, zinc, a polymer or a paint.
 

Related to Can coatings prevent sublimation?

1. Can coatings completely prevent sublimation?

No, coatings cannot completely prevent sublimation. However, they can significantly slow down the process and reduce the amount of material lost through sublimation.

2. How do coatings prevent sublimation?

Coatings prevent sublimation by creating a barrier between the material and the surrounding environment. This barrier slows down the rate of sublimation by limiting the amount of moisture and heat that can reach the material.

3. What types of coatings are effective in preventing sublimation?

There are several types of coatings that can be effective in preventing sublimation, including silicone, fluoropolymer, and acrylic coatings. The effectiveness of each coating depends on the specific material and environmental conditions.

4. Are there any drawbacks to using coatings to prevent sublimation?

Yes, there can be drawbacks to using coatings to prevent sublimation. Some coatings may alter the appearance or properties of the material, and they may also be expensive or difficult to apply. Additionally, coatings may need to be reapplied periodically to maintain their effectiveness.

5. Can coatings be used on all materials to prevent sublimation?

No, not all materials are suitable for coatings to prevent sublimation. Some materials may react negatively with certain types of coatings, and others may not be able to withstand the application process. It is important to consult with a materials expert to determine the best coating for a specific material.

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