ETA Emission Thermal Analysis

Emission thermal analysis (ETA) is an analysis method in which information about the solid state and its changes are obtained in the form of inert gas release from solids measured at various temperatures. Inert gases do not react with the solid into which they were included in trace amounts prior to measurement. The measured inert gas release is controlled by the physico-chemical processes of the solid under investigation. Structural changes, the interaction of the solid sample with the surrounding environment, or the establishment of chemical equilibrium in solids bring about microscopic processes and the release of inert gas. With this analysis method, both radioactive and non-radioactive (stable) inert gas isotopes are used, but radioactive inert gases are more advantageous because they are easily and sensitively detected.

In short, emission thermal analysis (ETA) is an analysis principle based on the measurement of inert gas released from solids. Thermal analysis is a technique in which the temperature and physical changes that occur when a substance is heated or cooled are analyzed.

Several measurement methods are applied for the thermal analysis of physical properties. The method used varies according to the physical properties analyzed. The most commonly used methods are as follows:

• The differential scanning calorimetry method (DSC) focuses on the calorie as a physical property. This method is based on the examination of transition temperature, transferred heat capacity, specific heat capacity, reaction temperature, reaction calorie and thermal history.
• The differential thermal analysis method (DTA) focuses on temperature as a physical property. This method is based on the examination of transition temperature, reaction temperature and similar values.
• Thermogravimetric analysis method (TGA) focuses on mass as a physical property. This method includes dehydration, oxidation, pyrolysis, evaporation, sublimation. and based on the examination of similar values.
• Thermo mechanical analysis method (TMA) focuses on dimensions as physical properties. This method is based on the examination of thermal expansion, thermal contraction, glass transition temperature, softening temperature and similar values.

Each of these methods is used to measure different phenomena and physical properties. Among these methods, two main thermal analysis techniques are thermogravimetric analysis, which measures the temperature change in weight, and differential thermal analysis, which detects changes in heat content.

Our organization also provides ETA emission thermal analysis services with its trained and expert staff and advanced technological equipment, among the numerous test, measurement, analysis and evaluation studies it provides for businesses in various sectors.