True or false. thermoplastic have some ductility.

true

True or false. thermosets have some ductiltiy

false

Ture or false. Materials with the exact same composition will have the same properties, even if the processing steps to produce them are different.

false

Is a Zn a cermaic

NO

What material has compounds made up of both metallic and non-metallic elements like tungsten carbide.

ceramic

What is not a characteristic for ceramic?

good ductility and formability

What material has the highest density?

metals

What material has the highest stiffness?

ceramics

Which material is the best for high temperature applications?

ceramics

True or false. do metals have some ductility

true

True or false. do ceramics have some ductility

false

True or false. do elastomers have some ductility

true

Which is a polymer? silicon, silica, or silicone

silicone

What polymer softens repeatably on heating?

thermoplastic polymers

What polymer type is the easiest to recycle

thermoplastic polymers

True or false. syntactic foams are polymer matrix composites reinforced with hollow spheres

true

true or false. aggregates make concrete more expensive

false

Will a greater or smaller fraction of reinforcing fibers increase strength in fiber reinforced composites.

greater fraction

Will fibers parallel or perpendicular to the applied load have the highest strength?

parallel

Will shorter/fatter or longer/thinner fibers increase the strength in fiber reinforced composites?

long/thin fibers

Would a linear or branched thermoplastic have a higher strength if all other aspects are the same?

branched

Would a thermoplastic with a higher or lower average atomic weight have a higher strength?

higher average atomic weight

Would a thermoplastic with a higher or lower degree of crystallinity have a higher strength?

high degree

Would a thermoplastic with complex or simple side groups have a higher strength?

complex side groups

Would an elastomer with a low or high number of crosslinks have a higher strength?

high number of crosslinks

Which polymer has the most primary bonds?

thermoset

Which would have a higher strength, a ceramic with high or low porosity level?

lower porosity

Which would have a higher strength, a ceramic with a smaller or larger grain size?

small grain size

What is the toughest ceramic?

zirconia (ZrO2)

True or false. silica is a network former in glass.

true

True or false. most steel is produced by sand casting

false.

Continuous casting

What type of cast iron will be the hardest?

white iron

Which type of cast iron conducts heat the best?

gray iron

Which type of cast iron has the best machinability?

gray iron

By weight, the most used metal alloy is...

iron/steel

True or false. carbon steels are more expensive than alloy steels.

false

True or false. BBC steel is magnetic

true

True or false. aluminum has a lower density than steel

true

True or false. aluminum has a higher stiffness than steel

false

Ture or false. it takes less energy to make aluminum from ore than it takes to make iron from ore.

falseee

True or false. With the exception of silver, copper is a metal with the highest conductivity.

true

True or false. A glaze helps stop staining of ceramics.

true

True or false. Vitrification is the partial melting of a ceramic during sintering that, when cooked, forms a glass.

true

True or false. Vitrification reduces the strength of cermaics

false

True or false. Transformation toughened zirconia is tough because it is very hard.

false

What material is used the most (by weight)?

Cement and concrete

True or false. The most advanced ceramics are melted to form their parts.

false

What is not true for a glazed ceramic?

the glaze closes up pores in the interior of the part

True or false. Glasses are shiny because they are crystalline.

false

True or false. Tempered glass is stronger than glass that is not tempered.

true

True or false. The density of steel is significantly lower than that of aluminum.

false

How much carbon is in a 1045 steel?

.45 wt%

What element makes steel stainless?

chromium

True or false. The recycling of metal reduces its cost.

true

What is the most commonly used element in polymers?

carbon

Do you expect the strength of polymers to increase or decrease after thermoplastic polymer fibers are pulled plastically to lengthen the fibers?

increase

True or false. By weight, does the usage of thermoset polymers exceeds that of thermoplastic polymers?

false

What method is the most common processing method for plastic production?

injection molding

The difference between a compostite and an alloy is what?

Composites are materials made up of two components that retain their original character.

True or false. the bonding between matrix and reinforcing phases in fiber reinforced polymer composites affects ductility.

true

What is true for a dispersion strengthened composite composite but not for a precipitation-hardened metal alloy.

composites can operate at higher temperatures

What is the most common matrix for fiber reinforced composites?

thermosetting polymer

There is a limit to the amount of fiber reinforced tat can be added to a fiber-reinforced polymer because...

the fibers need to be fully coated with the martix to achieve optiumum properties

Which fiber type is stronger but not as stiff?

kevlar fiber

True or false. bag molding of composites gives better properties than simple hand lay-ups.

true

True or false. a thermoset matrix in a fiber reinforced composite is easier to process.

false

What is not a typical property of a metal?

poor conductor of heat

What has more carbon, steel or cast iron?

cast iron

True or false. the corrosion rate of metals increases at increased temperatures.

true

True or false. the corrosion rate of metals decreases when the metal is under stress.

false

What element makes stainless steel corrosion resistance?

chromium

True or false. window glass is made by flat rolling.

false

The glass is floated on molten tin

What material types can degrade in sunlight?

polymers??