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Isothermal Furnace Liners

For uniform isothermal environments — with temperature control that surpasses any conventional thermal control technique — laboratories and engineers turn to Aavid Thermacore isothermal furnace liners (IFL).

Isothermal furnace liner heat pipeIsothermal furnace liners from Aavid Thermacore save time and energy while maximizing productivity, by achieving isothermal wall temperature and the superior temperature uniformity required in diverse applications such as semiconductor crystal growth, thermocouple and temperature calibration, vapor deposition, black body radiators, concentrated solar receivers and more. With no moving parts, the IFL is simple to install, provides design flexibility and is extremely reliable and cost-effective. Unlike probes, the IFL does not depend on heat transfer paths connecting to surrounding walls or the outside environment.

isothermal furnace liner heat pipeIn most applications, Aavid Thermacore IFLs provide a single uniform temperature zone using a single heater and controller. For multiple, individually-controlled zones or step changes in temperature profile, two or more IFLs may be used in series. Temperature adjustment is a simple one-step process and frequent profile measurements are not necessary.

IFLs are well suited to for process tubes and laboratory furnaces in chemical processing and research applications.

Standard IFLs for operation to 1,600°C are available in a range of sizes to fit conventional furnace bores for horizontal or vertical application. Custom IFLs can be fabricated for sub-ambient and cryogenic operation. The size and geometry of the IFL can be customized to any application.

isothermal furnace liner options

Isothermal furnace liner options available from Aavid Thermacore:

1.    Flanged Ends
2.    Extended Inner Pipe
3.    IFL with Support Rods
4.    IFL with Thermo Wells (external, internal or within heat pipe)
5.    Vacuum Retort
6.    Hemispherical Dome End
7.    Small Diameter Cavity
8.    Calibration Wells


      Isothermal furnace liner material options:

  • Inconel 601 (standard)
  • Inconel 600, 625, 718
  • Haynes 188, 214, 230 (longer life at 1150°C in air)
  • Hastelloy C
  • Incoloy 800
  • 300 series stainless steels
  • Nickel

      Refractory Metal Material Options:

  • Titanium
  • Tantalum
  • Molybdenum and TZM
  • Rhenium and Iridium
  • Niobium
  • Tungsten


Thermal management challenge? Take the first step towards the solution for you. Please contact an Aavid Thermacore technical representative or e-mail for more information on our thermal solution technologies.

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