N the melt atomization process to make fine metal powders, there usually is a variation in powder size because not all atomized droplets are of the same size. In an experiment, it was found that titanium droplets of 10 μm dia reached their solidification temperature (1660 C) in 2 milliseconds when the surrounding gas temperature was 1100 C and the initial droplet temperature was 1860 C. How long would it take for droplets of 5 μm, 20 μm, 30 μm and 50 μm diameter to cool by the same amount if they all had the same initial temperature? Given: density of Ti = 4510 kg. m-3.

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Explanation:

Atomization, also called the spraying technique or procedure, refers to a process in which molten metals are broken down into little or tiny drops of liquid through the use of high-speed fluids (liquid as water, gas as air or inert gas) or fluids with centrifugal force, and then solidified into a powdered state.

Kindly check the attached image below to get the step by step solution to the above question.

molecules are free to separate from each other and will take on the shape of the container. molecules move completely at random and high speeds. they vibrate in a fixed position and do not move around much. molecules expand to the edge of their container.

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