Shared Flashcard Set

Details

MSE 150 Test 3
MSE 150 Test 3
24
Engineering
Undergraduate 2
04/17/2009

Additional Engineering Flashcards

 


 

Cards

Term
MOSFET
a)What does it stand for?
b)What's it look like?
Definition
a) Metal Oxide Semiconductor Field Effect Transistor
b) There are two depletion regions that are small
Term
PBT
a)What does it stand for?
b) What does it look like?
Definition
a) Planar Bipolar Transistor
b) It has one big depletion region.
Term
What are the two techniques used to introduce dopant atoms into a silicon wafer in order to make n-type or p-type regions for IC devices?
Definition
Ion Implantation and Diffusion
Term
By what process does a microscopic pattern get transferred to a silicon wafer surface of an integrated surface?
Definition
Photolithography
Term
Heterogeneous Nucleation
Definition
Nucleation that occurs on the surface of a container or on insoluble impurities.
Term
The eutectoid structure of an Iron-Iron Carbide diagram (Alpha plus Carbide)
Definition
Pearlite
Term
Proeutectoid Ferrite
Definition
It's the gamma + alpha phase. When steel is cooled, it nucleates and grows at the austenitic grain boundaries
Term
Eutectoid ferrite
Definition
The alpha ferrite in the pearlite stage
Term
Proeutectoid Cementite
Definition
Nucleates in a hypereutectoid plain-carbon steel mixture, nucleates and grows primarily at the austenite grain boundaries
Term
Eutectoid Cementite
Definition
The cementite formed by the eutectoid reaction
Term
Martensite
Definition
Hard and brittle microstructure produced by rapid quenching.
Term
Where is the temperature in an Iron-Iron Carbide phase diagram where a quenched and tempered steel
Definition
Where the eutectic line is
Term
What happens to the hardness of quenched steel during the tempering step?
Definition
The hardness decreases
Term
What happens to the ductility of the steel during the tempering step?
Definition
The ductility increases
Term
At what temperature range can you perform tempering?
Definition
Anywhere below the eutectoid temperature
Term
What are the three steps of the precipitation hardening process?
Definition
1)Solutionizing
2) Quenching
3) Aging
Term
Three steps of tempering steel process?
Definition
1) Austentizing
2) Quenching
3) Tempering
Term
The retarding force in homogeneous nucleation is? What's the driving force?
Definition
The Surface Energy. The Volume energy
Term
In electroplating, the part that you want to electroplate needs to be the?
Definition
Cathode
Term
In sacrificial corrosion, the part that you want to protect needs to be the...
Definition
cathode, cathodic protection
Term
Will there be more proeutectic or eutectic alpha/beta after cooling in a phase diagram?
Definition
More proeutectic
Term
Solutionizing should occur in...
Definition
In the pure alpha phase
Term
At what temperature range should aging take place?
Definition
Low temperature. 130-190 Degrees
Term
What type of diffusion mechanism do dopant elements like Aluminum, Gallium, Boron, Arsenic, etc. use in Silicon
Definition
Vacancy
Supporting users have an ad free experience!