Modification of Silicon Nitride Coated Steel Surface Hardness by Plasma-Flame Heat-Treatment
DOI:
https://doi.org/10.2025/crc5k662Abstract
In this work, the hardness of steel surface was introduced before and after coating with silicon nitride layer with heat treatment from 300 to 1000 °C. The silicon nitride was deposited on the steel surface by spray pyrolysis and heat treatment was carried out by high-energy plasma flame hitting the workpiece and scanning the surface. Maximum hardness of 1750 HV was achieved for the steel surface coated with silicon nitride and heat treated at 600 °C. An ideal balance between nanocoating hardness and enhanced adhesion in the interface region was observed as the steel substrate is kept safe from thermal or mechanical deformations.
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