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Glass Ceramics Characteristics Quiz

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Questions and Answers

What is a defining characteristic of glass ceramics?

Inability to be shaped using ordinary molding methods

Exceptionally low melting point

Ability to crystalize to some extent (correct)

Minimal resistance to temperature and thermal shock

What is a typical use of glass ceramics?

Public aquariums

Vehicle windshields

Building windows

Envelopes for high-temperature lamps (correct)

Which type of glass is mentioned as being used for cooking purposes?

Soda-lime glass

Glass ceramics (correct)

Fused silica glass

Borosilicate glass

What material is described as the result of the erosion of the Earth's crust over time in the text?

Clay Signup and view all the answers

What is the main component of soda-lime glass?

70-75% SiO2 Signup and view all the answers

How does borosilicate glass differ from soda-lime glass?

It has a higher expansion coefficient Signup and view all the answers

What are some typical uses of borosilicate glass?

Electrical insulators and telescope mirrors Signup and view all the answers

Which type of glass is known for its great transparency?

Silica glass Signup and view all the answers

What happens to the strength of ceramics when they have tiny flaws and are loaded in tension or bending?

It drastically reduces Signup and view all the answers

Why are metal inserts not easily molded into ceramics?

High firing temperatures prevent it Signup and view all the answers

What is the recommended draft angle for ceramic shapes to avoid issues during manufacturing?

At least 5 degrees Signup and view all the answers

How are most technical ceramics typically formed before being shaped and fired?

Starting as powders that are pressed or molded Signup and view all the answers