Question

in powder metallurgy the range of pleasure to which powdered metal in desired proportions are compresed in moulds is
a) 10 to 50 bar
b) 50 to 300 bar
c) 310 to 650 bar
d) 690 to 13750 bar
and how ?

Answer 1

B........... 50 to 300

Answer 2

Concept Introduction: Metallurgy is an important topic of basic and industrial chemistry.

Explanation:

We have been Given: Compacting Pressure of powdered metal.

We have to Find: in powder metallurgy the range of pleasure to which powdered metal in desired proportions are compresed in moulds is

$10 \: to \: 50 \: bar \\ 50 \: to \: 300 \: bar \\ 310 \: to \: 650 \: bar \\ 690 \: to \: 13750 \: bar$

The correct answer is Option No. 4,

$690 \: to \: 13750 \: bar$

Compaction pressure highly influences the pore size as well as number of pores. With increase in compaction pressure the surface contact area of the powder particles increase which reduce the porosity.

Final Answer: The correct answer is Option No. 4

$690 \: to \: 13750 \: bar$

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