Exam (elaborations)
MTL 200 QUESTIONS AND ANSWERS
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MTL 200 QUESTIONS AND ANSWERS
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Name: Score:220 Multiple choice questions
Definition 1 of 220
In FCC when there is an interruption in ABCABCABC
Stack Defect
Primary Phase
Stacking Fault
Grain Boundaries
Definition 2 of 220
all bonds are single bonds
Non-polar molecules
Degree of polymerization
Hydrophobic molecules
Saturated hydrocarbon molecules
Definition 3 of 220
Solubility limit for areas between alpha and alpha+beta limit
Lever line
Solvus line
Beg line
Tie line
,Definition 4 of 220
1)Occurs when Rxn is limited by diffusion through the solution
2)After high rates of H+ concentration used up, a depletion zone, forms because concentration
of diffusing H+ cannot keep up
3)It is though polarization of these types that reduction Rxns are possible
Crossing the Eutectic isotherm (2 points)
Concentration polarization (3 points)
Deterioration methods for materials (metals,ceramics,polymers)
Thermoplastic (3 points)
Definition 5 of 220
Has three active bond points
Cathode
Trifuctional monomer
Macromolecules
Ladder polymers
Definition 6 of 220
1)A table representing relative re-activities in seawater
2)Materials near top are cathodic and unreactive
3)Materials near bottom are anodic
4)Most metals are most stable in ionic form
5)Metals gold and platinum are the exception
Optical Microscopy (3 points)
The Galvanic Series (5 points)
The electromotive fore (2 points)
The electron protection (3 points)
,Definition 7 of 220
1)Electron beam pass through a system
2)Specimen must be sliced into a thin foil
3)upper limit is 1 000 000x
Activation Polarization (2 points)
Transmission electron microscopy (3 points)
Measures to reduce crevice corrosion (2 points)
Principle Quantum Number 4 (shell letter, and sub-shell)
Definition 8 of 220
A pure metal electrode submerged in 1 mol of its ions
Phase boundaries
The standard emf series (2 points)
The standard half-cell
Two types of point defects
Definition 9 of 220
1)Bottom of list
2)More susceptible to oxidization
Metallic Crystal Structures (3 points)
Unsaturated hydrocarbon molecules
Covalent bonding (3 points)
Most likely to corrode (2 points)
, Definition 10 of 220
1)Adjacent linear chains joined together at various positions through covalent bonding, will not
crystallize
2)Common:Rubbers
Crossing the Eutectic isotherm (2 points)
Solubility Limit (2 factors)
Crevice corrosion (3 points)
Crosslinked Polymer (2 points)
Definition 11 of 220
1)Surface scan and reflected electrons are recorded back
2)material must be electrically conductive
3)if not a thin metallic coating must be applied
4)upper limit is 50 000x
For Solids line displacement (2 points)
Swelling and Dissolution (4 points)
Scanning electron microscopy (4 points)
Permanent Dipole Bonds (3 points)
Definition 12 of 220
stabilizers
Protection
Availability
Microstructure
Evacuation
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