carburization
/ˌkɑːrbjərɪˈzeɪʃən/
noun
- The process of adding carbon to the surface of a metal (especially iron or steel) to make it harder.
- The technician monitored the carburization of the steel shafts in the furnace.
- Carburization is a common step in making durable machine parts.
- Proper carburization can double the lifespan of a gear.