A comparative study on solid particle erosion behavior of plasma sprayed Cr2O3 coatings on 410 grade steel

International Conference on Advances in Materials and Manufacturing Applications 2016

Rao, K.V. Sreenivas^1 ; Girisha, K.G.^1 ; Eswar, Sushruta^1

Department of Mechanical Engineering, Siddaganga Institute of Technology, Karnataka, Tumkur

572103, India^1

关键词: Coated substrates;    Coating material;    Comparative studies;    Energy dispersive X ray analyzer;    Enhanced properties;    Erosion resistance;    Solid particle erosion;    Stand-off distance (SoD);   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/149/1/012065/pdf
DOI  :  10.1088/1757-899X/149/1/012065

来源: IOP

【 摘 要 】

In the present investigation chromium oxide (Cr2O3) powder particles were used to deposit on 410 martensitic steel. Ni-Cr was used as bond coat. Erosion studies were directed on uncoated and also plasma sprayed steel examples at room temperature. The Erosion analyses were done utilizing an air-jet erosion test rig at a speed of 30 m/s by varying stand-off distance as per ASTM G-76. The stand-off distance considered were 10mm, 20mm, 30mm & 40mm. Silica sand particles of size 312μm was used as erodent. The surface morphologies were characterized using Scanning electron microscope (SEM) and presence of coating material was confirmed using energy dispersive X-ray analyzer (EDS). Vickers micro harness test was performed on surface of coated and un-coated substrates. It was observed that Cr2O3Coated specimen exhibits better Erosion resistance when contrasted with uncoated substrates because of its enhanced property like micro hardness.