High Emissivity Paint for Aluminium Surface

[chiragk]

Hey,

I am making a furnace...which uses Aluminium material. Does anyone knows a paint which can be used for applying on Aluminium Surface and which works upto 500 degree Celsius and has high emissivity.

 

[marcusl]

You are making a furnace out of metal? An insulating firebrick or ceramic is the usual choice for high temperatures.

 

[turbo]

An aluminum furnace that has a heat-source that can overshoot is in danger of self-destructing/melting. It would be far more prudent to construct the walls with cast iron or sheet steel, and line the firebox with firebrick or ceramic, as marcusl suggests. Muffle-furnaces (high-temp boxes for lab-use) are not made out of aluminum for good reason. A properly lined iron or steel furnace will resist deformation and will last for many years.

 

[chiragk]

The furnace I am making is for low temperature applications ...I am going to use it below 500 Degrees Celsius