Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Aerospace Engineering-mat > Ceramics > Flashcards

Ceramics Flashcards

1
Q

Two types of ceramics

A

Technical and non technical

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Structure of Ceramic

A

Crystalline

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Cermanics- Ductility

A

no brittle, high moduli

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Ceramics- Strength

A

Strong in tension

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Ceramics- how easy is manufacture

A

Difficult to design and shape as cannot melt and flow

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is Porosity

A

Holes in the crystal stucture left behind by evaporating water

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

When more porosity what happens to strength (E, Flexural strength)

A

it decreases with volume fraction Porosity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Measuring porosity- what is wd

A

dry weight

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Measuring Porosity- what is ws

A

weight when suspended in water

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Measuring Porosity- what is Ww

A

weight when removed from water

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Measuring Porosity- Equation

A

ww-wd/ww-ws *100

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Apparent porosity- cons

A

doesn’t include the central pores that water cant get into

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

True porosity- pros and cons

A

better then apparent, hard to find B

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Cermanics - mechanical properties (strength)

A

Higher compressive strength then glass, highest tensile strength

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Cermanics- price

A

non technical cheap- technical not cheap

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Ceramics- Thermal and electrical conductivity

A

big range for both

17
Q

Manufacturing ceramics step 1

A

combine slurry and water

18
Q

Manufacturing ceramics step 2 and 3

A

shape and heat to get rid of water

19
Q

Cons of manufacturing ceramics by hand

A

leaves micropores

20
Q

What would happen to a ceramic with micropores in freezing conditions

A

cracks would propogate as water exapand

21
Q

How to fix internal pores through manufacture

A

Coat in ash and then it will penetrate it and then form a glass inside- porcelain

22
Q

Modern ceramic manufacturing

A

Uses powder- shape- then sinter

23
Q

What is sintering

A

High temp allows movement of atom at grain boundaries

24
Q

Powder pressing describe

A

compact powder into mould and then compress

25
Q

Slip casting

A

Slip is water and ceramic- creates hollow thing as it can let the water through the mould

26
Q

Tape casting

A

Produces flexible films- like pasta- conveyer belt- heat

27
Q

Are ceramics chemically inert

A

yes

Aerospace Engineering-mat (8 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions