Boriding introduces boron atoms into the surface of a metal at high temperatures to form metal borides. This creates a distinct, tooth-like layer that bonds tightly to the base material. The resulting case is exceptionally hard and resists abrasive wear, galling, and certain corrosive environments better than conventional carburizing.
The pump impellers keep wearing out in the slurry, so let's try boriding the next batch.
The boride layer is brittle, so the base metal must be strong enough to support it without yielding under impact.
Also heard as
- Boronizing
Related terms
Case harden
To harden the outer surface of a metal part while leaving the interior tough and ductile.
Carburizing
Diffusing carbon into the surface of low-carbon steel at high heat, then quenching for a hard case.
Nitriding
Diffusing nitrogen into steel below its critical temperature to form a hard case with no quench.