Heating Module 300° C
The photo shows the 300°C heating system. with specimen clamps on the top surface. Specimens up to about 20 mm x 20 mm can be observed in the SEM, at temperatures ranging from ambient to 300 degrees. Thermal contact to the specimen stage was minimized, so that no damage will occur.
Different from a number of other heating platforms, this module allows working at air up to full temperature.
The specimen holder can be made in many individual shapes, usually some form of a depression or "nest" in the middle. Flat specimens can be clamped down with fine tungsten or bronze springs as shown.
The vacuum feedthrough flange and mounting hardware are part of the shipment volume.
There is also a 500° C version with similar dimensions available.
You may choose between "PID" and "manual" controlling. The PID-controller takes all heating parameters into account, after once performing a "learning"-routine. A continuous heating ramp can be selected, to heat up the specimen at constant rate. The controller will run up the temperature to the experiment value, and stop there without oscillations. The "manual" heating operation is controlled by operator observation. Although it is slower, and needs operator attention, the final temperature is very steady. The PID-controller can also work in a manual mode.
RT to 300, 500 or 800 degrees, depending upon the required version. Various methods of specimen clamping.
Attaching the Module to the Specimen Stage
The heating module is mounted to the SEM stage like a "large specimen". Together with the stage, the whole module will move about in the specimen chamber, and it can be tilted a small amount too. Caution with specimens that will melt and liquefy! The vacuum feedthrough for the SEM chamber wall is part of the shipment volume.
Dimensions: Approximately 100 mm x 60 mm x 40 mm. The shape of the base plate was cut in such way, that the module will not touch anything while opening the door on rails or a swing-away arm. The central furnace element has a multilayer reflection shield inside; it is attached with minimum surface contact, keeping the heat flow into the specimen stage at a very low level. Each heating module has its own individual shape, carefully cut to fit the SEM specimen stage.