RF Susceptor Heating (KHz range) Graphite Foil vs Iron Foil (or thin film)

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SUMMARY

The discussion centers on the effectiveness of expanded graphite foil versus iron foil as RF susceptors for low-temperature heating applications. Expanded graphite foil is recognized for its superior thermal conductance, facilitating uniform heating across areas up to 10 square inches. However, the comparison of susceptance properties between these materials at specific geometries, frequencies, and field strengths remains underexplored, particularly for foils less than 2mm in thickness and systems operating at wattages below 100W.

PREREQUISITES
  • Understanding of RF heating principles
  • Knowledge of thermal conductance properties
  • Familiarity with material properties of graphite and iron
  • Experience with thin film technology
NEXT STEPS
  • Research the thermal properties of expanded graphite foil in RF applications
  • Investigate the susceptance characteristics of iron foil at varying frequencies
  • Explore the impact of foil thickness on heating efficiency
  • Examine case studies on RF heating systems with wattages under 100W
USEFUL FOR

Engineers and researchers involved in RF heating technology, material scientists studying thermal conductance, and professionals optimizing heating systems for small-scale applications.

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Which do you believe is the best choice for a low temperature RF heating susceptor, i.e. - greatest rise in temperature vs. field strength. I am aware that Graphite (expanded graphite foil) has excellent thermal conductance in plane and therefore makes for very even heating patterns over large areas, however I am dealing with areas no larger than 10 sq/in.

I have not found much information comparing the susceptance properties of the two in similar geometries, frequencies and field strengths. Foils generally <2mm thickness. The system wattage does not exceed 100W.
 
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Thanks for the post! Sorry you aren't generating responses at the moment. Do you have any further information, come to any new conclusions or is it possible to reword the post?
 

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