Physical and Mechanical Properties of Ceramics

There are a number of ceramic materials that have the ability to conduct electricity. For example, chorium dioxide can conduct heat and electricity as efficiently as majority of metals do. Many other ceramic materials, like silicon carbide, are not able conduct heat and electricity as properly as others; however it can still function as a semiconductor (a material that has a greater ability to conduct electricity than an insulator but lesser efficiency compared to that of a good conductor such as a metallic substance such as copper).

Other kinds of ceramics, like aluminum oxide, are not able to conduct any amount of electricity. The aforementioned kinds of ceramics are utilized to function as insulators (materials that are utilized to separate different components of an electrical circuit to guide the electrical current on the desired course).

There are some ceramics, like porcelain, that not only acts as insulators at low temperatures but can also function as good conductors at high temperatures.Ceramics that contain iron oxide (Fe2O3) can exhibit magnetic properties that are similar to those of nickel, iron and cobalt magnets. These iron oxide ceramic materials are commonly referred to as ferrites.

Other ceramic materials that exhibit magnetic properties include oxide compounds of manganese, barium and nickel. Ceramic magnets can be madewith high resistance to magnetization and utilized in electronic circuits and electric motors. When electrons become highly arranged in a line, as they do in ceramic magnets, a powerful magnetic field can be generated which is very difficult to demagnetize (disruption of magnetic made possible by breaking the alignment of electrons).