What Are the Applications Suits DSC？
Differential Scanning Calorimetry (DSC) is widely used in many applications, either general quality testing, or research, it is an effective method. DSC calorimeter, has the features of easy calibration, by a low-melting substances, e.g., indium, to perform the calibration.
DSC is a fast and reliable thermal analysis method, with is suitable for many applications that can assist scientists or researchers to finish the research and test easier, than many other instrument. Here are some common DSC applications:
Oxidation Stability
Oxidation stability using DSC studies of samples, usually made in an airtight sample chamber, given a constant temperature and the outside temperature isolation. The sample chamber is typically filled with an inert gas (e.g. nitrogen), heated to the required temperature, and then subjected to an oxidizing gas. Any slight change in the oxidation reaction, can be observed by DSC. DSC can be used to analyze the stability of the material or compound, as well as their optimal storage conditions.
Safety Screening
DSC can be used as a preliminary screening tool for safety screening. In such applications, the sample will be housed in a non-reactive crucible (often gold, or gold plated steel), and which will be able to withstand pressure (typically up to 100 bar). However, because of its setting, the sensitivity will be worse than the general DSC (because of heavy crucible, usually per minute 2-3℃). In addition, the activation energy is unknown, so that the measurement must start from the observed temperature exothermic, and after, deduction it for about 75-100℃, in order to determine the maximum recommended temperature of the material. Otherwise, you can use the adiabatic calorimeter to obtain more accurate data, but in such kind of testing, it may take 2-3 days, while the temperature is increased by 3℃, every half-hour.
Ceramics Applications
For the control of the manufacturing process conditions in the development of modern ceramic materials, DSC can be used in the measurement of ceramic material phase transition temperature and the phase diagram, which can provide extremely useful information. For example, the DSC curve of glass-ceramic material, BaO, TiO2, Al2O3, SiO2, a hidden crystalline phase can be found in between the ferroelectric crystal melting peak and exothermic peak. DSC can prove that this is kind of the crystalline phase of the glass-ceramic material the best condition. A high temperature DSC can provide good performance for such kind of researches.
Metals
DSC on metal applications, it can test the molten metal and alloys, crystallization, glass transition, secondary phase transition, and specific heat values and other important physical and chemical properties, but also can test the corrosion, oxidation, reduction, magnetic variation and thermal stability and so on. A high temperature DSC can provide good performance for such kind of researches.
Hydrogen Storage Material
Hydrogen storage material can generally be divided into metal hydride, chemical hydrides, and Sorbent. The adsorption-type hydrogen storage materials had bee widely studied and applied in various researches in recent years. Among the research, the most common one is the compound of metal organic framework (MOF). MOF, due to the benefit of high purity, high crystallinity, low-cost, high-volume and controllable structure, etc., in gas storage, especially the storage of hydrogen, showed a broad application prospects. the "Heat of Adsorption" can be measured by DSC in a variety of major MOF hydrogen storage material, with hydrogen under acting.
The Setaram DSC has high temperature features, which is capable to be used in this application field.