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Different Types Of Ceramics

Gone are those days when ceramics used to refer only to pottery and articles made of molded and baked clay.Today the most innovative of materials, like silicon chips and the catalytic converter, are the fruits of innovation in the ceramic manufacturing industry.Advanced ceramics are new materials or a combination of existing ceramic materials manufactured through the application of a modern materials science approach.Ceramics are inorganic and nonmetallic solids with a wide range of useful properties such as high hardness and strength, very high melting points and chemical inertness.The peculiar properties of advanced ceramics have made them significant in our everyday lives.There is not a single square feet of area in our modern life that has not been touched by this efficacious material.Ceramic suppliers categorize ceramics into three major groups: 1) refractory ceramics are used in furnaces and as durable building materials.Refractories are heat-resistant material used in the linings of high-temperature reactors, furnaces and other processing units.Apart from being highly resistant to heat, refractory ceramics can also withstand physical corrosion due to chemical agents.They are known for their ability to provide containment of substances at high temperatures.Products made by refractory material suppliers usually fall into two categories: a) bricks, such as construction brick, fusion cast blocks b) specialties or monolithic refractories, such as plastics, castables, gunning mixes refractory ceramic materials are carbides of silicon and oxides of magnesium (magnetite), calcium (lime) and zirconium.They have high resistance to chemical corrosion, high temperature and thermal stress.2) glass-ceramics glass has an amorphous structure like that of liquids, which solidifies from liquid state without crystallization.An overheating of a glass furnace led to the invention of glass-ceramics.This transparent material is biologically inactive and chemically inert.Cookware made of this heat-resistant material can be transferred directly from a hot stove burner to a refrigerator without cracking.This material is a relatively better conductor of heat than conventional glasses.The structure of glass ceramics consists of several tiny crystalline regions within a noncrystalline matrix.This structure provides them with some properties of ceramics and some of glass.Glass ceramics expand less when heated as compared to most types of glass.This characteristic makes them useful in windows, in wood stoves or as radiant cooktop surfaces.3) clay ceramics are usually made by a mixture of clay, earthen elements, powder and water, molded into different forms.After molding, these clay structures are fired in a high temperature oven known as a kiln, resulting in a hard, rock-like substance.These ceramics are often decorated with a waterproof paint-like substance known as glaze.Clay ceramics have good chemical and thermal resistance.They are high in density, resistivity and dielectric strength.Clay ceramics constitute stoneware and porcelain.The way ceramics have percolated our everyday lives has lead to a spiraling demand for high-quality ceramic suppliers.From household appliances to spacecrafts, ceramics have found an unprecedented range of applications in modern times.

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