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Sarkari MCQs Government Exam Question Bank
Question no. 6230

What powder metallurgy production process yields metal alloy powders characterized by perfectly spherical particle shapes?

Select your answer for: What powder metallurgy production process yields metal alloy powders characterized by perfectly spherical particle shapes?
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Answer: C. Atomisation

Explanation

The atomisation production process utilizes gas or water jets to break molten metal streams into droplets. As these liquid metal droplets cool and solidify mid-air, surface tension forms perfectly spherical particle shapes. Powder metallurgists rely on this technique to manufacture high-purity metal powders with smooth, spherical morphologies. Powder metallurgy is a manufacturing process producing metal components from fine powders through pressing and sintering. Atomisation is the most common industrial method for producing metallic powders directly from liquid metal melts. Particle shape and size distribution heavily influence the flowability and compaction behavior of metal powders.

Additive manufacturing and 3D printing require spherical metal powders produced via atomisation for smooth layer spreading. Aerospace component manufacturers use atomized alloy powders to create dense, high-strength structural parts. Materials scientists analyze powder morphology to optimize sintering density and mechanical properties in final products. Electrochemical deposition produces crystalline metal flakes or dendrites rather than perfectly spherical particle shapes. Gaseous reduction methods yield spongy, irregular metal powders instead of smooth spherical microparticles. Mechanical attrition breaks down bulk metals into jagged, irregular particles through high-energy ball milling processes.

Subject
Engineering
Category
Chemical Engineering
Topic
—
Difficulty
medium

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