High Speed Scanning Electrothermography - HS-SET (Armenia)
Description: HS-SET is an advanced technique designed to study rapid reactions in solid-gas, solid-liquid, and solid-solid systems. The experimental setup comprises a stainless-steel reaction chamber with a quartz window and a high-speed, solar cell-based temperature sensor. The setup also includes a gas control system and a control unit with a power supply. The power supply is of a variable current and voltage type, providing direct current heating of metallic specimens (wires/tapes) that serve as both reactants and heating sources. The control unit, supported by software, offers several distinctive control modes based on either specimen temperature or electrical parameters (power, voltage, current and resistance) feedback. The specimen can be heated using user-defined functions, including isothermal, linear, logarithmic, sinusoidal, or a combination of the multiple functions. The system enables controllable heating of specimens up to 5×10⁵ K/s by direct electric current and in-situ data acquisition (electrical power, current/voltage, wire resistivity, and temperature) at 10 kHz. The small specimen size also permits rapid quenching (at a cooling rate of up to 5×10⁴ K/s rates) by terminating the electrical current, and ensuring ex-situ analysis. In power control mode, the HS-SET uniquely captures complete kinetic data for a single experiment, from the onset of a rapid exothermic reaction. This capability is exclusive to the HS-SET system, making it a powerful tool for exploring rapid chemical processes.
Specifications:
Temperature range։ 900-3500 K
Heating rate։ up to 106 K/s
Cooling rate։ up to 104 K/s
Pressure range։ 2∙10-4-1000 kPa
Control frequency։ 10 kHz
Sample։ thin wire or metal tape