Differential scanning calorimeter for measuring the melting point of tin particles

Tin, as a widely used metal material, has a melting point that is a key performance parameter in fields such as material processing, electronic packaging, and alloy preparation. By using differential scanning calorimetry (DSC), the melting point of specific specifications of tin particles can be accurately determined, providing reliable basic data support for related industrial production, material research and development, and quality control. At the same time, the accuracy and applicability of DSC technology in metal material melting point determination can be verified.

1、 Operation steps of the experiment

1. Measuring instruments:DZ-DSC400 Differential Scanning Calorimeter

2. Measurement sample: Tin particles

3. Experimental parameter settings:

3.1 Turn on the power supply and supporting software of the differential scanning calorimeter, preheat the instrument for 30 minutes, wait for the instrument temperature to stabilize to room temperature, and perform self inspection to ensure that all components of the instrument are running normally.

3.2 Place the sample crucible containing tin particle samples on the tray of the instrument furnace body, and also place the empty reference crucible together, and cover it with a thermal insulation cover.

3.3 Adopt programmed heating method, with a heating rate of 10 ℃/min; Raise the temperature to 350 ℃; The testing atmosphere is nitrogen, and the nitrogen flow rate is controlled at 50mL/min to prevent oxidation of the sample during the testing process.

4. Measurement chart:

5. Measurement spectrum analysis:

Enthalpy value → the energy absorbed by the material during melting; Peak value → the temperature point at which the test material melts most violently; Starting point → the temperature point at which the test material transitions from a solid state to a liquid state; Termination point → The temperature point at which all test materials transition from solid to liquid. From the above figure, it can be concluded that the melting point of indium particles in this experiment is 156.5 ℃, and the enthalpy value is 28.6013J/g. The melting point of tin particles is 231.93 ℃, and the enthalpy value is 60.5618J/g.

2、 Conclusion of the experiment

The melting point of tin particles was tested using a differential scanning calorimeter, with standardized operation and reliable data. The test results show that the melting point of the tin particle sample is 231.93 ℃, which is close to the theoretical melting point of pure tin with a relatively small relative error, indicating that the purity of the sample is high and meets the relevant quality standards. At the same time, the experimental results verified the feasibility and accuracy of differential scanning calorimetry in determining the melting point of metal materials. This method is easy to operate, has high testing efficiency, and accurate results. It can be widely used for melting point determination of tin and other metal materials, providing strong technical support for production and research in related fields.