Which of the following is TRUE of powder metallurgy?

Question

Quizplus · Accepted Answer

Powder metallurgy involves forming components from powdered metal particles, which are pressed and sintered together. Because the metal is not in a liquid state, lower temperatures are required compared to casting. Option A is incorrect because machining is not always required after forming, as some components may have the required dimensions and surface finish after sintering. Option B is incorrect because while porous metal powder can be used in some applications, there are many other types of powder that can be used as well. Option C is incorrect because the density of the component depends on the specific process and parameters used, and is not necessarily affected by the source of the iron powder. Option D is incorrect because powder metallurgy is not used for separating gangue from metal ore, but rather for forming metal components.

Which of the Following Is TRUE of Powder Metallurgy