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What are "Ceramics"?
What are "Ceramics"?
Ceramics are inorganic, non-metallic solids that are typically produced by heating and subsequent cooling.
They are made up of either metal or non-metal compounds and are characterized by their hardness, high melting points, and brittleness.
Historically, the term "ceramics" referred to pottery and related artifacts, but today it encompasses a wide range of materials used in various applications.
There are many types of ceramics, and they can be categorized in various ways:
Traditional Ceramics
Traditional Ceramics
These are made from materials like clay, talc, and feldspar. Examples include:
Pottery: Vessels, plates, bowls, etc.
Bricks and tiles: Used in construction.
Porcelain: A type of pottery that is made by firing a particular kind of clay (kaolin) at very high temperatures.
Technical/Advanced/Engineered Ceramics
Technical/Advanced/Engineered Ceramics
These are often made with purer, refined raw materials and are used for specific high-performance requirements. Examples include:
Alumina (Al₂O₃): Used in spark plug insulators, grinding media.
Silicon carbide (SiC): Used for cutting tools, car brakes, bulletproof vests.
Zirconia (ZrO₂): Used in knife blades, dental ceramics, and jewelry.
Tungsten Carbide (WC): Used in cutting tools, drill bits, industrial machinery parts, jewelry (especially men's wedding bands), mining tools, and armor-piercing ammunition.
Piezoelectric ceramics: Convert mechanical energy into electrical energy and vice versa, used in gas lighters, ultrasound devices, etc.
Magnetic ceramics: Used in computer hard drives and audio speakers.
Glass
Glass
Though they are different from classic crystalline ceramics, Glasses can also be considered in the broader ceramic category due to their inorganic nature and similar preparation methods.
Glass is an amorphous material primarily made from silica combined with additives like soda and lime, which can be molded or shaped when molten and solidifies into a transparent or translucent structure. Examples include:
Borosilicate Glass: Used in laboratory equipment and heat-resistant cookware.
Lead Glass: Suitable for decorative items and optical lenses due to its high refractive index.
Tempered Glass: Employed for safety purposes in vehicles, architectural applications, and various consumer goods due to its breakage resistance.
Window Glass: Used in buildings, vehicles, and various structures for transparency and insulation.
Optical Glass: Utilized in eyewear, microscopes, telescopes, and camera lenses.
Cement
Cement
Cement is a powdery substance primarily derived from calcium silicates, aluminates, and aluminoferrites that, when mixed with water, binds other materials together and hardens over time. Examples include:
Portland Cement: The most common type, used in the majority of concrete, mortars, and general construction.
White Cement: Has lower iron content and is used for decorative works and plastering due to its lighter color.
High Alumina Cement: Made from bauxite and limestone, it can resist high temperatures and is used in refractory applications.
Sulfate Resisting Cement: Used in environments with high sulfate concentrations to prevent deterioration.
Quick Setting Cement: Designed to set faster than typical cements, it's beneficial in underwater construction and road repair.
2.3✔ CHECKPOINT
2.3✔ CHECKPOINT
ID Ceramics
ID Ceramics
In the lab, correctly distinguish and identify at least one example of components made from the following ceramics, being used as a functional component on a piece of equipment (do NOT disassemble or damage any components/equipment):
Traditional Ceramic
Technical Ceramic
Glass
Cement
Document and analyze all your examples:
Provide evidence/reasoning/proof the component is made of what you think it is
Determine, understand, and explain why the particular ceramic in question was chosen for each component (properties, cost, etc.)
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