Variable-temperature microstructural observation is a testing method used to examine and analyze changes in the microscopic organization and morphology of materials under different temperature conditions. This method is highly significant for understanding the thermal stability, phase transition processes, microstructural evolution, and property changes of materials.

The test sample is a Carbon Fiber Reinforced Polymer (CFRP) composite. Due to its high specific strength, high specific stiffness, low coefficient of thermal expansion, excellent fatigue resistance, strong corrosion resistance, designable properties, and numerous other advantages, CFRP is widely used in various industries including aerospace, defense, and automotive.

According to customer requirements, GoGo Instruments customized a probe-type heating/cooling stage for Donghua University, adapted for use with an OLYMPUS metallurgical microscope, to observe defect morphology during the forming process of carbon fiber reinforced composites under different temperature control conditions. This product utilizes liquid nitrogen cooling and resistance heating, providing precise temperature control within the range of -50°C to 400°C. The system includes a temperature controller, cooling controller, liquid nitrogen tank, circulating water system, and supporting PC-based temperature control software for easy temperature setting and data acquisition.

↑ Customized Probe Heating/Cooling Stage by GoGo Instruments ↑

Product Parameter Features:

1. Temperature Control Range: -50°C to 400°C;

2. Temperature Stability: ±0.1°C;

3. Temperature Resolution: 0.1°C;

4. Heating/Cooling Rate: 0~30°C/min (supports setpoint/program segment control);

5. Utilizes a custom adapter plate to couple the heating/cooling stage with the metallurgical microscope. This minimizes the limit of the objective's working distance while ensuring required user functionalities, effectively meeting the user's need for higher magnification observation.

Customized features added to the temperature control software for this test:

1. Ability to read and plot temperature curves;

2. Temperature curves are interactive, allowing users to set breakpoints; temperature control pauses upon reaching a set breakpoint;

3. Enables reproduction of temperature curves, re-controlling and fitting based on saved curves.

The OLYMPUS metallurgical microscope, a common instrument in the field of materials science, is renowned for its high-definition imaging and diverse analysis techniques. Employing intelligent imaging technology, this microscope can perform high-resolution analysis on various metals, inorganic, and organic materials, revealing information such as microstructure, surface morphology, and internal microstructural details. When paired with the GoGo Instruments probe heating/cooling stage, it enables comprehensive microstructural observation of materials under variable temperature conditions.

↑ On-site testing with the probe heating/cooling stage adapted to the OLYMPUS metallurgical microscope ↑