All materials have their own physical, chemical, mechanical, and thermal characteristics, which indicate the appropriateness of a material in a particular application. Material characterization is the study of these properties based on standardized methods and analytical instruments to quantify them at various length scales, between the atomic and the macroscopic. Proper characterization is a key ingredient in obtaining material reliability, promoting optimal processing conditions, and innovative material technologies.
Structural Characterization
Structural characterization aims at the internal structure of atoms, grains, and phases of a material. Some of the common techniques of microstructure, crystallography, grain size, and phase distribution are optical microscopy, scanning electron microscopy, X-ray diffraction, and electron backscatter diffraction.
Chemical Characterization
Chemical characterization determines elemental composition and chemical bonding. The impurities, contaminants, and chemical states are detected using techniques like spectroscopy, chromatography, and mass spectrometry. Chemical evaluation is essential in checking fabric specifications and comparing environmental or corrosion-associated behaviour.
Mechanical Characterization
Mechanical characterization is used to test how a material responds to forces on it. Other tests, like tensile, compression, hardness, impact, fatigue, and creep testing, give information on strength, ductility, toughness, and durability. The properties are required in structural design and safety evaluation.
Thermal Characterization
Thermal characterization is the observation of the behaviour of substances to changes in temperature. Differential scanning calorimetry, thermogravimetric evaluation, and thermal conductivity are the strategies that assist in the determination of thermal stability, section transitions, and heat resistance.
