Ceramic Flashcards
What are ceramics and how are they different from metals and polymers?
Ceramics are non-metallic, inorganic materials that are usually made up of a combination of metallic and non-metallic elements. They differ from metals and polymers in their properties, structure, and applications.
What are some common types of ceramics and what are their uses?
Some common types of ceramics include alumina, zirconia, silicon carbide, and porcelain. They are used in applications such as cutting tools, electronics, biomedical implants, and construction materials.
What is the crystal structure of ceramics and how does it affect their properties?
Ceramics have a crystalline structure, meaning that their atoms are arranged in a regular, repeating pattern. The crystal structure affects properties such as strength, stiffness, and thermal expansion.
What is sintering and how is it used to form ceramics?
Sintering is a process in which ceramic powders are heated to high temperatures to fuse together and form a solid object. It is commonly used to form complex shapes and structures that would be difficult or impossible to make through other methods.
What is the difference between traditional ceramics and advanced ceramics?
Traditional ceramics are typically made from clay and other natural materials and are fired at low temperatures. They are used in applications such as pottery and tile. Advanced ceramics are made from high-purity powders and are fired at high temperatures to create materials with exceptional mechanical, thermal, and electrical properties.
What is the role of additives in ceramic processing?
Additives such as binders, plasticizers, and lubricants are often added to ceramic powders to improve their processing and handling characteristics. They can also affect the properties of the final ceramic product.
What is the difference between a ceramic and a glass?
Both ceramics and glasses are non-metallic, inorganic materials. However, ceramics typically have a crystalline structure, while glasses have an amorphous structure. Ceramics are also generally stronger and more resistant to thermal and chemical damage than glasses.
What is the role of ceramics in the field of biomedicine?
Ceramics are commonly used in biomedicine for applications such as dental implants, bone grafts, and joint replacements. Their biocompatibility, strength, and durability make them an ideal material for these types of applications.
