Answer
Sponge powered iron contains many small holes in the iron particles due to escaping oxygen when the iron is reduced. Water atomized powdered iron has much smoother and denser particles as the powder is formed from molten iron.
Work Step by Step
Sponge powered iron contains many small holes in the iron particles due to escaping oxygen when the iron is reduced. Water atomized powdered iron has much smoother and denser particles as the powder is formed from molten iron.