Definition
A method of manufacturing metal parts by compressing fine metal powders into a desired shape inside a die, then heating the compressed shape (a process called sintering) to bond the particles into a solid piece. The result is a part that has its final form without being cast, forged, or machined from solid stock.
Plain English
A way of making metal parts by pressing metal powder into a mold and then baking it until the powder grains fuse into one solid piece.
Context Anchor
Seen in aircraft maintenance and materials discussions when identifying how a metal part was made.
Derivation
Powder describes the starting material, and metallurgy comes from the Greek 'metallon' (metal) plus '-urgy' (working with). So powder metallurgy literally means 'working metal in powder form' — useful because it tells you the defining feature: the metal starts as powder, not as a molten or solid block.
Why Pilots Care
Parts made this way can achieve complex shapes, consistent strength, and reduced weight in engine and structural components.
Intuition Check
Powder metallurgy does not mean the part is coated with powder or made of loose powder. It means powder was used during manufacturing and then bonded into a solid metal part.
Example Sentence 1
The self-lubricating bushings in the control system were produced using powder metallurgy, allowing oil to be retained inside the part itself.
Example Sentence 2
Turbine engine manufacturers often use powder metallurgy to produce high-strength compressor disks.