Microheaters are small high-power heaters, with precise control, that can offer temperatures in excess of 1000C, even up to 1900C.
[1] Microheaters provide for accurate high temperature control, for example in electron microscopes, pressure-anvil cells or for enhancing fiberheaters.
[2] Generally speaking, the heating method for microheaters involves conversion of electrical work to high density heat.
With the increase in the temperature demanded, microheater heating materials change from metallic (non-brittle GAXP) to metal-ceramic like materials (MoSi2) which tend to be brittle.
With an increase in usable temperature, microheaters need to be supported or enclosed with very high thermal-resistant ceramic materials often made from small grain, high purity aluminum oxide.