Definition
An electroplating process in which a thin layer of chromium metal is deposited onto the surface of another metal part to provide a hard, smooth, corrosion-resistant finish. In aviation, chrome plating is commonly applied to engine cylinder walls and landing gear struts to reduce wear, resist scoring, and protect against rust.
Plain English
A way of coating a metal part with a thin layer of chromium so it becomes harder, smoother, and better at resisting rust and wear.
Context Anchor
Seen in aircraft maintenance records, overhaul notes, and component repair instructions, especially when a metal part needs a hard protective surface.
Derivation
From 'chrome,' a shortened form of 'chromium,' which comes from the Greek 'chroma' meaning 'color' -- the metal was named for the bright colors of its compounds. 'Plating' refers to applying a thin layer, like a plate of metal, over a surface.
Why Pilots Care
Restores dimensions on worn parts, extends service life, and prevents corrosion that could lead to part failure.
Intuition Check
Do not think of chrome plating only as shiny decoration. In aircraft maintenance, it is usually a functional protective coating used to make a working surface harder and more durable.
Example Sentence 1
After the overhaul, the mechanic noted that the cylinders had been chrome plated, so the pilot was advised to use mineral oil during break-in.
Example Sentence 2
Chrome plating on the strut protected the landing gear from corrosion caused by runway chemicals.