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Showing papers in "IEEE Transactions on Mobile Computing in 1961"


Journal Article
TL;DR: In this article, a method is presented by which a furnace chamber may be heated to temperatures in excess of 2200 deg C in air, which offers the advantages of quiescent atmosphere, temperature stability, and control of heating and cooling rates from room temperature to maximum operating temperature.
Abstract: A method is presented by which a furnace chamber may be heated to temperatures in excess of 2200 deg C in air The method offers the advantages of quiescent atmosphere, temperature stability, and control of heating and cooling rates from room temperature to maximum operating temperature The furnace employs ultra-high-frequency induction heating of poorly conducting ceramic rings The rings are preheated to conduction temperatures by means of small resistively heated wire elements which are withdrawn prior to application of high-frequency power The suscepting elements themselves consist of yttrium oxide stabilized ZrO/sub 2/, while the thermal insulator is composed of unstabilized ZrO/sub 2/ grain Details and modifications to the control systems for the preheating and high-frequency heating systems are given The furnace provides a chamber 2 in in diameter and 4 in long, operating to a maxi-mum temperature of 2350 deg C with excellent control and highly efficient power input to the work The unit should find application in fabrication of oxides and in testing properties of materials in air at high temperatures (auth)

1 citations