For sintering of green powder compacts of copper, choose the correct statement:
P. Sintering should be done in an inert or reducing atmosphere.
Q. At a given sintering temperature, the rate of shrinkage will be higher for finer powder size.
R. Full density parts can be produced in a finite time by solid state sintering
S. Sintered compacts will have a higher strength than those made by metal working
A. P, Q
B. Q, R
C. P, R
D. Q, S
Answer: Option A
Related Questions on Introduction to Metallurgy
Which of the following are not commercially manufactured by powder metallurgy
A. Aircraft brake pads
B. Self-lubricating bearings
C. Tungsten carbide based cutting tools
D. Turbine blades
A. 10 degrees
B. 21 degrees
C. 30 degrees
D. 50 degrees
Which crystal system does not have all axial angles at 90 degrees?
A. Tetragonal
B. rhombohedral
C. orthorhombic
D. cubic
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