The presentation prepared by the student of the group Marupov Nuruhammad on the subject of electrical engineering and structural materials

30-21 The presentation prepared by the student of the group Marupov Nuruhammad on the subject of electrical engineering and structural materials

1.Basic concepts and classes of electrotechnical materials. The place and role of electrical technical materials in modern technology

2.Energy dissipation and perforation in dielectrics
3. Dielectric wetting, physical, chemical, mechanical properties.
4. Basic concepts of dielectric materials.
5. Basic concepts of semiconductor materials.
6.General information about magnetic materials.
7. Basic properties of conductive materials
8.Basic concepts of construction materials.

Basic concepts and classes of electrotechnical materials. The place and role of electrical technical materials in modern technology.

• Electrotechnics (electro... and technique) is a branch of science and technology dealing with the use of electric and magnetic phenomena in the implementation of energy transformation, material production and processing, information transmission, etc.
• Materials have been a part of our lives and daily work since ancient times. Materials are the main part of everything that surrounds us. In fact, some materials have given names to different ages in human history, namely the Stone Age, the Bronze Age, the Iron Age, the Synthetic Materials Age, and the Smart Materials Age. The study of these materials is called materials science.

Energy dissipation and perforation in dielectrics

• Dielectrics are materials that do not conduct electricity quickly.
• If an electric field is applied to a dielectric, the dielectric gradually heats up, because part of the energy of the impact is spent on its heating. The electric power spent on heating is called dielectric loss or dielectric energy dissipation. As a result of the passage of internal current through the dielectric, the waste of electric energy in it occurs under the influence of constant and variable voltage. Due to the fact that periodic polarization is not observed in the body under the influence of constant voltage, the energy dissipation in the dielectric depends on its specific surface and volume resistance.

• Dielectric materials find wide usages in microelectronics, power electronics, power grids, medical devices, and the military. Due to the vast demand, the development of advanced dielectrics with high energy storage capability has received extensive attention [1], [2], [3], [4]. Tantalum and aluminum-based electrolytic capacitors, ceramic capacitors, and film capacitors have a significant market share. Ceramic capacitors have a wide range of applications but find their primary use in low voltage scenarios such as miniaturized consumer electronics for their relatively low capacitance and high-frequency operational characteristics. Yet, ceramic capacitors have obvious issues due to their low breakdown strength, mechanical cracking, and unpredictable reliability, especially in large size components. Electrolytic capacitors have relatively large capacitance, suitable for ripple current suppression for low-frequency operation.