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Slurry Erosion Performance of High-Velocity Flame-Sprayed Ni-20Al2O3 and Ni-10Al2O3-10TiO2 Coatings Under Accelerated Conditions

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Abstract

The slurry erosion wear behavior of Ni-20Al2O3 and Ni-10Al2O3-10TiO2 coatings, deposited by high-velocity flame-sprayed technique, has been evaluated in the present investigation. A series of slurry erosion tests were conducted on the deposited surfaces, using an indigenously developed slurry erosion test rig under varying environmental conditions. The effect of identifying operational parameters like rotational speed, average particle size of erodent and erodent concentration on erosion behavior was also evaluated. Surface roughness tester, scanning electron microscope and XRD apparatus were utilized as surface characterization tools, whereas Vickers’s microhardness tester and bond strength tester were employed for mechanical analysis. The SEM observations of eroded specimens were observed to be lying in close proximity to the reported experimental results. Irrespective of the test conditions, Ni-10Al2O3-10TiO2 coating showed better results of slurry erosion performance in comparison with Ni-20Al2O3 coating. Further, each operational test parameter revealed a proportional effect on the erosion rate of both the coatings.

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Authors and Affiliations

  1. IKGPTU – Research Scholar, Mechanical Engineering, Jalandhar, India

    Rajeev Kumar

  2. Baba Banda Singh Bahadur Engineering College, Fatehgarh Sahib, Fatehgarh Sahib, India

    Sanjeev Bhandari

  3. Lala Lajpat Rai Institute of Engineering and Technology, Moga, Punjab, India

    Atul Goyal

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  1. Rajeev Kumar
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  2. Sanjeev Bhandari
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  3. Atul Goyal
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Correspondence to Sanjeev Bhandari.

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Kumar, R., Bhandari, S. & Goyal, A. Slurry Erosion Performance of High-Velocity Flame-Sprayed Ni-20Al2O3 and Ni-10Al2O3-10TiO2 Coatings Under Accelerated Conditions. J Therm Spray Tech 26, 1279–1291 (2017). https://doi.org/10.1007/s11666-017-0598-6

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  • DOI: https://doi.org/10.1007/s11666-017-0598-6

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