• Vipan Bansal
• Abhishek Sharma
• Sunpreet Singh

In this research work thermal spray coating was developed on AISI H13 hot forming tool steel. The specimens were heat treated prior to thermal spray coating. The main thermal spray coating parameters in the process were: substrate temperature-500°C; nitriding time-24 hours; pressure-5mbar; voltage-500 V, coating composition-THERMAL SPRAY COATING/POWDER COATING 20:80; duty cycle of 80%, and the frequency used was 30-KHZ. The cross-sectional microstructures of the thermal coated specimens were examined by optical microscopy (OM). A diffusion layer was formed on the material by controlling the nitriding parameters but no white layer was observed during the optical microscopy. Microhardness measurements were performed on the surface and through the diffusion layer for each nitrided material. The as-nitrided specimens were characterized by X-ray diffraction (XRD) analysis and Scanning Electron Microscopy/Electron Dispersive Spectroscopy (SEM/EDS) analysis. The results showed the increased hardness of tool steel with nitrided layer. Further, the cross-sectional SEM micrographs showed the intact and pores free outer nitrided layer in the specimens.

Thermal spray coating, hot working tool steel, SEM/EDS and XRD analysis.

"DEVELOPMENT OF THERMAL SPRAY COATING ON AISI H13 STEEL AND ITS CHARACTERIZATION", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.8, Issue 9, page no.e285-e294, September-2021, Available :http://www.jetir.org/papers/JETIR2109432.pdf

"DEVELOPMENT OF THERMAL SPRAY COATING ON AISI H13 STEEL AND ITS CHARACTERIZATION", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.8, Issue 9, page no. ppe285-e294, September-2021, Available at : http://www.jetir.org/papers/JETIR2109432.pdf