[Kovove materialy - Metallic materials]
    Fri - April 12, 2024 - 22:27 No. of hits : 1740511 ISSN 1338-4252 (online) ISSN 0023-432X (printed)
© Institute of Materials and Machine Mechanics, Slovak Academy of Sciences, Bratislava, Slovak Republic

VOLUME 57 (2019), Issue 2

Erosion wear evaluation of HVOF sprayed WC-12Co coating on some pipeline materials using Taguchi approach
vol. 57 (2019), no. 2, pp. 113 - 120
DOI: 10.4149/km_2019_2_113

Pipeline materials used for the transportation of bottom ash slurry generally suffer from intense wear due to slurry erosion. In this work, High-Velocity Oxy-Fuel (HVOF) spray process was used for the deposition of WC-12Co coating on the Mild steel, SS 304 and SS 202. Slurry erosion pot tester was used for erosion tests of uncoated and coated materials. Effects of three factors namely slurry concentration, the speed of impacting particles and erosion test duration on erosion rate were investigated using the Taguchi approach. Influence of speed of impacting particles on the erosion rate of uncoated and all the coated materials was found to be maximum, which was followed by erosion test duration and then slurry concentration. WC-12Co coating showed significant improvement in erosion wear resistance of three substrate materials namely mild steel, SS 304 and SS 202. WC-12Co coating showed the brittle mechanism of erosion wear. After the Taguchi analysis slurry erosion results were further validated with analysis of variance (ANOVA). From both ANOVA and Taguchi analysis, it was observed that the influence of speed is maximum on the erosion wear of all the uncoated as well as WC-12Co coated specimens, followed by time and slurry concentration.

Key words
bottom ash, slurry erosion, pipeline steel, HVOF spray

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Full title of this journal is bilingual: Kovové materiály - Metallic Materials.
The official abbreviation in accordance with JCR ISI is Kovove Mater.

Article abstracts updated: 2023-10-26 07:45      
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