Plate furnace
Heating is achieved via 2 resistive pyrolitic boron-nitride heaters (HTR1001, from Advanced Ceramics, now unit of GE). Each can provide surface temperatures up to 1800C. The heating area is 25 mm in diameter and the chamber allows either a rough vacuum (~10 mTorr) and/or inert environment to be used. Chamber windows allow for up to 120 degrees of sample rotation.
The sample and a thermocouple are placed inside a holder (Cu or W block) placed between the heaters in order to provide thermal uniformity during heating. A reference powder and sample-free hole are also integrated into the holder for calibration purposes. Ceramic insulation is used to localize heat near the sample.
For more details, including drawings of the parts used, contact Jon Almer.
Last updated: July 17, 2009