Lesson 7: Ceramics/ Composites Flashcards
What is most of the glass we use known as?
- Most of the glass we use is soda-lime glass.
How is soda-lime glass, the glass we most commonly use, made?
- Soda lime glass is made by heating a mixture of sand, sodium carbonate and limestone.
What is the issue with soda- lime glasses?
- Soda-lime glasses have low melting points.
Why is borosilicate glass sometimes more useful than soda -lime glass?
- Has higher melting point than soda-lime glass.
- So can be used for cooking/ in laboratory.
What is borosilicate glass made from?
- Borosilicate glass is made from sand and boron trioxide.
Give two examples of materials that are clay ceramics.
- Pottery
- Bricks.
Give two examples of ceramics.
1.) Glass.
2.) Clay ceramics.
How are clay ceramics made?
- Clay ceramics are made by shaping wet clay and then heating in a furnace.
Which two materials are most composities made of?
- The reinforcement (includes fibres/ fragments of one material.)
- The reinforcement is surrounded by the matrix or binder material.
What is so good about composites?
- Composites have different properties to the materials in them.
- Ie. carbon fibre composite = very strong/ light –> used in cars/ aircraft parts.
Give 2 examples of composites. What two materials are these composities made from?
1.) Carbon fibre composites: Reinforcement material = fibres of carbon/ matrix = plastic resin.
2.) Reinforced concrete: this has steel bars surrounded by concrete.
What is carbon fibre composite used in? What property makes it useful for the composite to be used in this?
- Carbon fibre composite = strong and light.
- Used in cars/ aircraft parts.
What is reinforced concrete used for? What property (does composite have) in order for the composite to be used as this?
- Used to build buildings.
- Extremely strong.
