Mn–Si oxide layer

Controls internal oxidation

The Mn–Si oxide layer formed during hot-rolled coiling directly affects internal oxidation depth, thereby influencing final product quality.

Wentao, Zhang · Shiheng, Liu · Mao, Weichen · Guangxin, Wu · Jin, Xinyan

Journal of Materials Research and Technology 2023

Advantages

Internal oxidation depth increases with Si content

Mn–Si oxide/substrate interface provides a direct diffusion path accelerating internal oxidation

Si/Mn displacement reaction leads to continuous pure Fe at oxide scale/substrate interface