What is the Bridgman method?
The Bridgman method involves heating polycrystalline material in a container above its melting point and slowly cooling it from one end where a seed crystal is located. The melted material moves through a decreasing temperature gradient and forms a single crystal. MSE Bridgman furnace has vertically geometry and three zones. The middle zone of the Bridgman furnace is hot.
The reactor can be brought from the upper zone or bottom zone to the middle hot zone of the Bridgman furnace, and it can also be retracted from the place where it is brought.
The inner cabin of the Bridgman furnace consists of graphite insulations and graphite resistances. The sample dissolved in the graphite reactor can move to the cold zone at very slow speeds, whereby the crystal occurs.
In this method known as the Bridgman method, all parameters are adjusted by means of a touch panel. During the process, the reactor position, reactor speed, thermocouple temperatures, atmospheric pressure can be monitored and recorded on the Bridgman furnace monitor.
Able to set programmable temperature, time and soaking time, display of cooling water temperature and process details, and data save by USB connection feature via PLC controller, touch screen
Observation of set and real temperature
Delayed start and program save feature
Temperature control via PID and ±1°C temperature display sensitivity
System protection for over temperature. Audio visual warning alarm
Temperature measurement via thermocouples
Error display in case a breakdown
Percentage of electrical energy consumption
Heating on all side
Exhaust gas outlet connected to inner volume
High-quality insulated heat zone
Low energy consumption
10-1 mbar standard vacuum pump with the purpose of purge the air
Protective gas inlet and outlet
Lid, gas and vacuum sensitivity, cooling cabin temperature alarm
Adjustable water and gas flowmeter
Water cooled atmosphere cabin
Vertical design consist of 3 zones
Adjustable reactor 10-0,00001 mm/s
Auto power cut while the lid is opening
Low external surface temperature (Ambient +40°C)
thanks to double-layers steel construction
Epoxy painted galvanized-steel exterior
Height adjustable, non-slip rubber feet.
Usage with standing
Usage for both upward and downward
(DL) Data Logger
(MFC) Mass flow control
(AVS) Auto vacuum and scan cycle
(ET) External temperature measurement from within the furnace
(PCC) PC Communication and Software
For the maximum life of the furnace and the longer use of the furnace equipment, we recommend that the heating rate of 10°C/min . Flammable and explosive products must not be used in the furnace.
The hydrogen gas usage inside the furnace must not exceed %8 and must used as mixture gas The flowmeter which included the furnace are not only manual but also not high sensitive. For the high sensitive ones please get in touch.
Gas, water source, furnace connections and connection equipment are to customers responsibility. The vacuum pump which is including the system, for the purpose of purge the air that can not be work for proper vacuum condition. To have a vacuum condition please contact us.
Bridgman / Single Crystal furnaces are available in wide a ranges of volumes and temperatures up to 1800°C continuous use. Please contact us for detailed information.
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