Indian Journal of Science and Technology

Open Access Open Access  Restricted Access Subscription Access

Theoretical Modelling of Slurry Erosive Wear Testing of HVOF Thermally Sprayed Inconel-Titania Coatings


Affiliations
1 Research Scholar (Ph.D), PESIT, R & D Centre, Bangalore -560085, India
2 Department of mechanical engineering, PESIT, Bangalore-560085, India
 

Material loss due to slurry erosion is a serious problem in many industrial applications like hydraulic turbines, slurry pumps, pipe lines, etc. where the ideal choice of engineering materials is a real challenge. Lightweight aluminum alloys are finding wide applications in the field of aerospace automobile, defence, etc. due to improved physical, mechanical and tribology properties. HVOF (High velocity oxy fuel) Sprayed coatings provide protection against corrosion, erosion and wear. Inconel - 718 is a metallic coating which has good wear and erosion resistance. This was sprayed on to mild steel substrate and then subjected to slurry erosive wear tests. It is observed that the slurry wear rates of mild steel decreased on coating the substrate material with Inconel - 718. The tests were conducted in a slurry erosive wear tester at varying spindle speeds (500 -1500rpm) at different intervals of time .The wear loss was recorded experimentally compared with theoretical values and graphs are plotted to check accuracy. For this comparison, various parameters such as impinging particle size, velocity of solid particles, concentration of slurry bath, hardness of mild steel, time are correlated to obtain a theoretical formulation. A non-dimensional analysis is also done to reduce the number of parameters influencing the wear rate.

Keywords

Wear, Abrasion, Slurry Erosion, High Velocity Oxy Fuel Coating, Inconel-718, Titania
User

  • Clarke H, Mci and Harwich Ryan B (2001) A reexamination of the particle size effect in slurry erosion. Wear. 248, 147–161.

  • Ernest John Teichert (1944) Introduction to ferrous metallurgy by, Pennsylvania State college. Tata Mc- Graw Hill company, Inc.

  • Milind Suryaji Patil, Eknath R, Deore, Ramchandra S, Jahagirdar and Santosh V Patil (2011) Proc. World Congress on Engg: Study of the Parameters affecting erosion wear of ductile material in solid-liquid mixture. (pages 1-4)

  • Young Donald F (2001) A Brief Introduction to fluid mechanics second addition. John Wiley & sons, Inc. (Pages 240-250)


Abstract Views: 529

PDF Views: 172




  • Theoretical Modelling of Slurry Erosive Wear Testing of HVOF Thermally Sprayed Inconel-Titania Coatings

Abstract Views: 529  |  PDF Views: 172

Authors

N. Sekhar
Research Scholar (Ph.D), PESIT, R & D Centre, Bangalore -560085, India
M. Krishna Mohan
Department of mechanical engineering, PESIT, Bangalore-560085, India
Bhavish N. Reddy
Department of mechanical engineering, PESIT, Bangalore-560085, India
T. Lakshminarayana Reddy
Department of mechanical engineering, PESIT, Bangalore-560085, India

Abstract


Material loss due to slurry erosion is a serious problem in many industrial applications like hydraulic turbines, slurry pumps, pipe lines, etc. where the ideal choice of engineering materials is a real challenge. Lightweight aluminum alloys are finding wide applications in the field of aerospace automobile, defence, etc. due to improved physical, mechanical and tribology properties. HVOF (High velocity oxy fuel) Sprayed coatings provide protection against corrosion, erosion and wear. Inconel - 718 is a metallic coating which has good wear and erosion resistance. This was sprayed on to mild steel substrate and then subjected to slurry erosive wear tests. It is observed that the slurry wear rates of mild steel decreased on coating the substrate material with Inconel - 718. The tests were conducted in a slurry erosive wear tester at varying spindle speeds (500 -1500rpm) at different intervals of time .The wear loss was recorded experimentally compared with theoretical values and graphs are plotted to check accuracy. For this comparison, various parameters such as impinging particle size, velocity of solid particles, concentration of slurry bath, hardness of mild steel, time are correlated to obtain a theoretical formulation. A non-dimensional analysis is also done to reduce the number of parameters influencing the wear rate.

Keywords


Wear, Abrasion, Slurry Erosion, High Velocity Oxy Fuel Coating, Inconel-718, Titania

References





DOI: https://doi.org/10.17485/ijst%2F2012%2Fv5i6%2F30478